in what country are told blood is blue ??? first time ever I hear this. I am 59. edit: and what about the temperature loss through the head ?? really ?? again, never heard of that. I was brought up in France and move to UK in 1998. neither in France nor in UK have ever heard those "concepts".
How can a smart guy like you (Simon) have absolutely zero German skills? Why don‘t you at least type the 4 words in google translate or so to hear how it‘s pronounced? Roughly right would be way better than completely wrong
*pushes glasses up* axshually....they are really bad for rabbits. not to say the same level as dogs and chocolate, but certainly not something good to have in their diet overall.
When I was little, my older brother convinced me that our blood is really blue and it just turns red the instant it touches oxygen, which is why we never get to see the blue. He proved it by showing me the veins in my forearm. I was convinced. Fast forward to 7th grade science class and the teacher is talking about blood and why it's red. I _almost_ raised my hand, with the intention of correcting my teacher, when it suddenly occurred to me that my brother might be fucking with me. 🤣 I'll never forget that and it's one of my fondest memories. 🥰
@@bipolarminddroppingssometimes the school stops telling the lie. But at the same time, who cares. Why teach it to kids? This for someone that may want to know because they decided to follow the education of the body to be a doctor or something! Why would anyone else care?
1:15 - Mid roll ads 2:20 - Chapter 1 - Deoxygenated blood is blue 4:15 - Chapter 2 - Eating carrots improves your eyesight 6:35 - Chapter 3 - Human have 5 senses 9:10 - Chapter 4 - The taste map 11:55 - Chapter 5 - You lose 80% of your heat through your head
12:55 If you read at the actual sentence quoted, you see "when fully clothed". It makes sense that the majority of heat loss would be from the uncovered parts.
Yeah, that, and no one actually believes that, when fully naked, 80% of heat loss comes from the head. If they did they would rush to cover their head when it's cold, while everyone prioritizes covering the rest of the body.
Came here to say this. Blue has harder time penetrating and so reflects more. Red penetrates better and is absorbed. Reflected light is blue so we see blue.
@@TheRealRedAce Blue light (the shorter wavelengths) is scattered more by the atmosphere. When sunlight travels through more atmosphere, the blue wavelengths are scattered away from your line of sight, allowing the reds and oranges (the longer wavelengths) to dominate.
Blue light (the shorter wavelengths) is scattered much more than the longer wavelengths by the atmosphere. When sunlight travels through more atmosphere, more blue light is scattered away from your line of sight, allowing the reds and oranges (the longer wavelengths) to dominate. This is different from reflection off a surface, where the reflected light is redirected in a single direction, whereas scattering redirects the light in multiple directions.
to be fair to that military manual, it *does* say "when fully clothed". so its not claiming that a person that is naked except for their hat is better insulated.
No, but even mentioning the heat loss from head doesn't make sense. If written more accurately, as in heat will be lost more from any part of the body not covered than from those parts that are covered, it would be obvious how redundant it is to even mention it.
@@loganmedia4401 nah, i think it makes sense to mention it. I mean, right off the bat, generally speaking the head, hands and neck are the last things you expect a person to cover when dressing themselves. Also its way easier to underestimate how much heat youre losing through your head as opposed to your hands or neck
@@loganmedia4401 and yet people constantly go out with parts of their body exposed because they are wearing a coat.... Almost like you are proving why the saying is necessary
Remember that something like a military manual isn’t written to be true, it is written to be useful. Soldiers in winter survival situations should wear a hat… this data, sloppy as it is, supports that… Done.
I was told the overemphasis on carrots improving vision was British wartime propaganda to obfuscate the implementation of radar. I.e. "How the bloody hell do you Limie's keep spotting our bombers‽" "Carrots mate."
Correct. This wasn't just a rumor - British and US governments printed propaganda flyers and posters advertising this, especially after a much more advanced radar tube was developed in the US in 1943. The Germans actually had a primitive radar system, but it used a lower frequency (not microwave frequencies), and wasn't remarkably effective. The carrot propaganda was designed to hopefully stagnate the German discovery of the more advanced radar, and the carrot/eyesight myth carried forward into Baby Boomers from their parents, most of whom didn't know the truth behind the propaganda posters they saw. Many of those Boomers became teachers, and taught Gen X the carrot myth. It was so prevalent through the 1980s that it could be found in school science books as a "fact".
Apparently it was a quick thinking reply to a question during interrogation of a captured pilot, inspired by the government propaganda ploy to get children to eat carrots during rationing.
When teaching General Chemisty in a University I tell my students that most of what they will get in this class are: "Lies, half-truths, and approximations." The truth is just to difficult.
I had to retake intro to Chem after getting a bachelors degree in physics, I talked to the professor asking for help because I was so confused due to how many lies and half-truths there are. He tried to tell me everything we were learning was 100% accurate. I stopped giving a shit after he told me that.
@@CoffeeLoki67879 Yeah, well, you have to understand the basics (which are just that, basics) before you can get the higher concepts. How many times in physics is friction ignored? Real? No, but still valuable.
@@zahadou "I've no idea what you teach"...... it's the first sentence of the comment..... were you just looking for mistakes to point out and ignoring everything else?
Blood can also be pink due to hyperlipidemia. Basically, lots of fat in the blood. The fat adds a white color, mixed with the red of normal blood makes it pink.
The tastebud map is more wrong even than presented in the video. You have taste buds all around your mouth, especially including the inside of your cheeks and your soft palate. I’m particularly appreciative of this having lost 90% of my oral tongue to cancer in the last dozen years. Also particularly aware of it: I can *sense taste happening* in those parts of my mouth much more than I used to.
Babies lose a lot of body heat through their heads, relative to adults. But only because babies head are proportionally larger than adults. It's not a huge difference but it is important to cover their heads when outside on really cold days.
It really depends on how much hair you have, and what kind. I had a friend who had very thick, bushy hair. Confining it in a hat squashed it down, decreasing its insulative qualities and making him colder. This is why you really shouldn’t put a coat on a fluffy dog in the winter, you’ll actually make them colder.
@@bluex610 yes, certainly breed matters, that’s why I said “fluffy dogs”. Pugs are short-coated, and they’re also small, so would lose body heat faster. But I’ve seen people put coats on dogs like huskies.
I remember my science teachers in school being pretty honest. They told us alot of what we would learn is simplified and thus wrong. But it's the building blocks you need, to pursue science at a higher level.
I think that's a lie!!! 😮 You can't build up from a lie 😢 Teaching the basics is better then lying about the whole truth! You build up from the BASICS Any one that says otherwise is lying or at least misinformed and didn't think about it! Misinformation is a big thing these day's in everyday life! I wander why!!
That deliberate teaching WRONG things to children to "simplify" them is COLOSSALLY STUPID!! The only "simple" thing there is the dunderhead who came up with that idea! They tried it with spelling in the 60s in the UK and produced an entire generation who couldn't spell. NOW they're doing it with arithmetic with their idiotic BIDMAS/BODMAS nonsense. Now we'll have a generation who can't do mathematics!
Water will conduct heat away from your head faster than air. And as it evaporates it will remove even more heat. That’s why sweating works. Those effects still happen at cold temperatures and happen whether it’s sweat or applied water.
Absolutely true and well put, but this upholds the fact that one will "be" cold if going outside with wet hair, not the folk myth that we will "catch a cold" if going out with wet hair. That requires one's system to be exposed to an infection, not just lower temperature. When I was a child in the 70s, all the responsible adults seemed convinced that one caught a cold simply by being too cold.
If it's really cold, the water turns to ice, which is a pretty good insulator. Once the hair next to your scalp, warmed by body heat, dries out, creating a pocket of warm air, it's kind of like wearing an insulated helmet.
Something I rarely see mentioned about the human sense of temperature is that the "hot" and "cold" sensitive nerves are physically separate and distinct. Feeling "hot" and feeling "cold" are orthogonal vectors, and you can simultaneously sense both "hot" and "cold" at the same time! This is what Menthol does by the way. Similar to how Capsaicin stimulates the "hot" temperature receptor, Menthol stimulates both "hot" and "cold" receptors at the same time.
My (possibly apocryphal) understanding was that the "carrots are good for eyesight" was actually a WWII disinformation campaign to explain why US and British pilots could spot enemies nearly over the horizon and/or had exceptional night vision, when in fact they were being spotted by radar, which was, at the time, a secret.
@@francisboyle1739 there are actual advertisements and posters from ww2 that say things like “night sight is life or death” and go on to list vegetables high in vitamin a including carrots and that it’s essential for vitamin a to be eaten for good night vision. It was truly used as a cover to try to explain away why the raf could find and shoot down German bombers before they even hit the British channel because they were trying to keep the onboard radar on their planes a secret.
0:45 Last time some idiot declared himself an alpha male in my presence I asked them, "What, like a chimp?" oddly they didn't act very alpha after that they got kinda whiny.
i mean… a chimp can rip your arms off, so as far as strength goes that’s not really that much of an insult. also, a lot smarter than wolves. yeah, calling yourself an “alpha” is lame as hell, but so is bragging about something you may or may not have actually done to strangers on the internet. oddly enough, it’s very much the same behavior of self appointed “alphas” 🤔
The sadest part about this, is that you're clearly a thinker that challenges the norms and generally accepted misinformation. But being told you were wrong, damages that important spirit, crushing it back into conformity. I hope you managed to retain the independent thought needed to explore, discover, and learn the real truth, wherever you sought it. Go get it back NOW, if you didn't.
Same, except my school acknowledged the inconsistency and said that's why the map isn't on the test - just the list of senses (but they still liked to see kids do the test and see if they thought for themselves). This was many decades ago btw. Something similar happened in school to my dad btw, when they tried to teach him that the number of grains of sand on a beach were infinite, and he refuted the claim by noticing that the earth itself is finite. Obviously, for the number of grains of sand to actually be infinite the earth which contains the sand would also have to be infinite. His teacher did not accept his refutation, sadly.
As a german i realy appreciate the attempt of pronouncing the title "Zur Psychopyhsik des Geschmackssinnes". The later half definitely put a smile on my face. :) By the way, love your content!
I remember when I did my first year college courses and so much of it was the teacher saying something akin to, “You were taught this in high school but it’s not correct. This is what the science actually says.” Many of my fellow students were very resistant, confused, and upset about it.
Must be a pretty backwards society when you literally have to unlearn shit that you were taught as truth only a year before. Like can we just skip the lies and go straight to the truth ? Who decreed that lies were a mandatory part of the curriculum ?
@@VincentPaulS I only had science electives for my film undergrad. Then I went and got an MBA because I’m a masochist. There was less of that in Business school.
Heh, in my first year Psych classes half of them were "This is the popular science version of X experiment. Here's the actual paper, go read it and tell us how the popular science is incorrect." Things like the Milgram experiment, Stanford Prison, Calhoun's Rat Utopia... and so on, and so forth. By the same token, my first ever lecture in applied psychology had a 15 minute diatribe on how early social scientists obsession with math and quantifying everything is equal parts amazing and destroys psychology. :D
Centrifugal Force, when you spin a ball on a string it is held in orbit by Centrifugal Force. My grade school science teacher explained this with a straight face. Then in college physics, no such thing. It is Centripetal Force = mass x velocity2 / radius. He could have said we call it Centrifugal, but this is just a name we assigned to represent a set of advanced math calculations we have not covered yet. I wonder if he actually knew the correct answer?
One huge issue in science education that needs to be corrected: We all know that one needs to be taught simpler things early, and more complex things as you get older. And we generally agree that it would be good for kids to know the HISTORY of science. So, because science was simpler in the past, this got turned into a widespread practice of teaching old science to youngsters and newer science as you went up in grades, until only the most advanced post graduates got the most recent understandings. This is why you are constantly being told by teachers that what you learned in previous grades was wrong, or at least misleading. We need to STOP this. Instead of teaching young kids old models of the atom, we need to find a way to teach them the current conception of an atom and particle physics, but simplify it to conceptual ideas they are ready for. Completely throw out old and obsolete notions, and teach ONLY current science, but in very simple terms, that becomes more nuanced in higher grades. Then, if some history, physics, or medical major wants to take a separate class "The history of scientific ideas" for example, they can do that and learn interesting but scientifically irrelevant things like, "Oh! They used to think the sun revolved around the earth" or "Wow, they once thought an electron was the smallest particle - weird."
While teaching kids old information as if it were current is indeed a problem, I feel like you're veering too far towards the other major problem in science education: teaching science as a collection of information instead of a process. The various historical models of the atom aren't important. And unless you're a chemist or particle physisist, neither is the current one. What's important is why those models were initially accepted, how we determined each of them was wrong, and how that led to the next wrong model. Building models based on the available data, testing them, and adjusting based on the results. That's what science IS and what's important to instill, despite schools generally being awful at it.
@@Riven_5 Yes I agree with that being important, but people should know the major general consensus of current scientific theories as well. They should know basic physics, biology, etc at least.
On the topic of the senses, if we're going to divide up touch, pain, and temperature into separate senses on the grounds of their being mediated by different kinds of sensory nerves (when all three would have been included under the umbrella of "touch" in the Aristotelian model), it's only fair that we do the same for light vs. color vision. Or for that matter, even the three different wavelengths of colored light we have cone cells for! On the other hand, if you think saying we actually have four different senses under the umbrella classically called "vision" is silly, perhaps it's also fair to say it's silly to say we actually have three different senses under what was classically called "touch". (Balance and proprioception, on the other hand, are indeed new discoveries.)
I can at least accept the sense of temperature being separate from touch since it works for both gauging ambient temperature as well as temperature of objects through contact. Pain, though? That's just touch, but harder. And yes, extreme temperatures can cause pain, but do so through touch. At worst, you can call pain and temperature pseudo-senses under the umbrella of "touch."
@semaj_5022 Something I rarely see mentioned about the human sense of temperature is that the "hot" and "cold" sensitive nerves are physically separate and distinct. Feeling "hot" and feeling "cold" are orthogonal vectors, and you can simultaneously sense both "hot" and "cold" at the same time! This is what Menthol does by the way. Similar to how Capsaicin stimulates the "hot" temperature receptor, Menthol stimulates both "hot" and "cold" receptors at the same time. Also, you have olfactory receptors all over your (human) body, not just your nose. There are olfactory receptors inside your stomach, in your armpits, and on your genitals. Your body, like most animal life, has a distinct sense of being poisioned. One of the only parts of the brain which directly comes into contact with blood, is dedicated to sensing poison, and will immediately eject the contents of the gastrointestinal tract out of either end until the poison is gone. The sense of carbon dioxide ppm dissolved in your blood is the sense of suffocating and needing to breathe. (You can't sense the oxygen level, only excess carbon dioxide. This is why hypoxic atmospheres are so dangerous: everything feels "normal" until you lose consciousness and die.)
@@juliavixen176 Speaking of olfactory receptors, if we are to extend the principle of "pain and temperature use different nerve receptors than regular touch, so they're distinct senses", then that would also imply that we have hundreds of different "senses", the vast majority of which are just the different unique olfactory chemoreceptors.
Or you can think of it as being an indication of self-awareness. After all, 'alpha' denotes the initial version of a product that is first given to testers. Their development teams just released these guys to the public prematurely. They need more UX testing.
Your section on "do eating carrots improve eyesight" is interesting but there is another aspect. The first British aircraft to carry radar was the Bristol Beaufighter which was designed just before WW2. It was used as a night fighter during the Battle of Britain. The British Government became aware that the Germans would be suspicious about the increasing numbers of their aircraft that we were shooting down. This led to the British press publishing a number of fake cover stories which said our pilots had found eating large amounts of carrots had altered their night vision. This was done as the Germans were monitoring the British press. A few years later the Germans tried eating large amounts of carrots and found it did not help night vision. After WW2 this story was passed onto British children from their parents. This was mentioned by the British TV programme World War Weird.
Reply I learned this same information from The Fat Electrician (another TH-camr who does video about military stuff). Basically the carrots thing was intentional misinformation.
Yes, I have heard the same story: that it was the British government that popularised the myth that carrots improved your eyesight ( specifically in pilots) as a way if covering up the use of radar. It had its source in the fact that carrots are a good source of vitamin A, which is needed to maintain eyesight.
I have also heard that the Germans did not believe it and thought the British were trying to conceal their improved radar. The British were really to conceal the code breaking at Bletchley Park
After I left school (when it was all trees round here, etc.,) I became an autodidact, and was neither surprised, nor disappointed, to find that a large proportion of what I had been taught at school, in multiple disciplines, was utter bollocks. It may be better nowadays, but I doubt it. A friend of mine, who enjoys taking part in pub quizzes, told me that a team comprising teachers from local schools, seem to always do badly, and often give out ludicrous answers to fairly simple questions. Do they all work from source books now? It's a sobering thought.
yeah its one of those weird ones, where i partially get why its done, and also hate it overall. there is also ofc pure incompetence in so many ways like "new math" that they keep trying to teach in america despite it fundamentally being flawed. my dad PROVED it mathematically to the school board in GA when my sister was in grade school. So GA removed it form the curriculum, but its still being taught in a lot of places in america. As to the kind of things where im like "yeah i get that you are teaching it "wrong"", E=mc^2 is ridiculously difficult to understand. like that one equation is taught as a course of its own AFTER you have taken multiple other advanced math courses. so ofc high school or middle school isnt going to do a good job of explaining it. there are other concepts that are true 99.9% of the time, but explaining that .1% is again something you would learn while getting a masters in that subject. its again understandable that its "dumbed down" and "wrong". i still think that over all it could be done better, but the point stands that in some instances it really is the only feasible way. Where the real issue lies is twofold: most of our textbooks are 20+ years old so have a lot of outdated/incorrect info and so much no or then is dumbed down that just does not need to be. just because its going to take 10 minutes to get it right they mangle it so it takes 5 minutes instead.
The frustration with telling people about the extra senses is that they all want to lump it in with just touch, even with proprioception they will argue you are feeling your body through the touch with air and what not.
It's honestly really difficult to conceptualize proprioception for a lot of people, I'd imagine. The sense does utilize touch, but it also uses sight, hearing, balance, etc, along with your brain's mental map of your location and understanding of direction and time. It's a lot easier to picture it as "knowing where you are by everything you're touching," wrong though that may be. Brains are the most difficult thing for brains to understand.
@@semaj_5022 You no doubt use all that information to keep track of the state of your body, but proprioception itself is a distinct sense with specific sensors for it in the limbs. I know someone who fell off a bike and suffered a broken arm. He said he knew it was broken because it felt like his arm was in one position, but when he looked, it was pointing off in a different direction.
Balance, Time, and Pain are completely unrelated to skin and touch. E.g. emotional pain caused by finding out someone cheated you or made up stories about you. So there are definitely at least 9 senses - not 5.
No it had to do with radar and was used to explain how RAF pilots were seeing in the dark. Also carrots were an easy to grow food so encouraging people in the UK to eat more carrots was also a way to help with food rationing.
@thehomeschoolinglibrarian I thought the cover story was that RAF were seeing targets better "because carrots", but it was the fact that the code was broken so the RAF knew where to hit.
@@captainspaulding5963 I thought it was to cover up our use of radar too. Found this on BBC Science Focus; "To prevent the Germans finding out that Britain was using radar to intercept bombers on night raids, they issued press releases stating that British pilots were eating lots of carrots to give them exceptional night vision."
At no point in my life did I interpret "you lose 80% of your body's heat through your head" to mean that a fully naked person would lose 80% of their body's heat through their head.
I think that blue blood part is a myth confined to the Anglo-American cultural space. I'm from Eastern Europe and I haven't heard about this in my entire life. Not as kids, not ever.
I am from New Zealand and have heard of this blue-blood myth somewhere. I can see blue-looking veins in my arms even though this is an optical illusion.
My elementary school teacher was an idiot. She insisted that the American Civil War was fought in the 1840’s. And that the dinosaurs were killed by the ice age. After getting marked wrong on tests for saying otherwise, I told this to my “wonderful supporting” parents, they actually took the teacher’s side: saying that I should have wrote what the teacher said, as I would have gotten those tests questions “correct”.
A story reported in the news in recent years, was when a teacher reported a young pupil for disobedience and disruption, when they argued with the teacher's claim that one kilometer was a greater distance than one mile. Even though the teacher was wrong and the pupil right, the pupil was STILL suspended for being argumentative, when the school agreed with the teacher that the pupil accepting the teacher's word as gospel was more important. Wow, are we heading for catastrophe, when the importance of FACTS being RIGHT is worth less than brain-dead obedience. PS extremely sad to hear your parents taking that same blind obedience route, and not realising and appreciating your cleverness in understanding the deeper story. It's the kinda thing that scars people for life. Sounds like you at least comprehend WHY they took that stance, and even understand how and when you might need to apply this "toe the line" strategy. There are times (like, when writing a PhD) when suggesting the controversial can win brownie points - but even that depends on whether the people assessing your thinking prefer the notion that you challenge the accepted norms, or fluff their tail feathers with some "yes-men" flattery. Ultimately, if your career leads to the need to break traditions and find new ways (rocket science, for instance) then you need to keep pushing the boundaries. On the other hand, a career in sales and customer helplines means having to accept "the customer is always right", no matter how daft their expectations.
@@bythelee School traditionally wasn't about educating children, it was about turning them into obedient workers and soldiers. There seems to be a lot of inertia in the system tho.
@@bythelee I always think back to the immigrant attending college that got accused of rape. Another student, the woman, accused him of rape after she regretted sleeping with him. Guy is cleared as footage clearly shows her literally dragging him home. School still expells him and says they don't let rapists go there. Justice, welcome to America.
I can't say this is wrong, but most schools taught incompetely how our solar system moves in space. Most school system ignores the sun also moves through the galaxy.
Very true! And the fact tha5 we are "tilted" relative to the suspected plane of the galaxy, as well as where er are in the "thickness" of that plane..... among other things. I do suspect that these things would make the topic too complex for young minds. Heck. It makes MY brain ache😅
Having been interested in astronomy for over sixty years, the teaching of astronomy in schools is probably a bit over simplified imo. But in fairness, as many schools ( here in the UK at any rate ) only cover astronomy as part of a broader general science curriculum, the teaching staff probably haven't got the time to go into it in any depth. When I was a kid I learned far more about astronomy by visiting my local library and from my local astronomical society than I ever did at school.
@user-lt9py2pu6u great point! School at this level can really only afford to he a brief introduction. Trying to go this in depth in every subject would be a nightmare.
With regards to Mech and Duvall's work, there genuinely is no such thing as an alpha male: only sociopaths and malignant narcissists who demand to be worshipped like gods.
It's like the "Great Man" theory of history (also debunked). Sure, you can be skilled and well adjusted, but that won't magically make you a leader or more successful without the right circumstances. Even a "beta" male can get along well with others and find happiness.
Generally, the notion that "prolonged exposure of the human body to cold temperatures" automatically means "catching a cold". A common cold is caused by coming into close contact with a person who already has a common cold and is infectious. Cold temperatures might contribute to decreasing your immune system's ability to fight off the infection without you ever experiencing any symptions, but it's perfectly possible to catch a common cold and get sick on a hot summer day, and it's possible to expose yourself to cold temperatures without getting sick because you never came into contact with an infected person.
In ayurveda, the six tastes are bitter, salty, sour, sweet, pungent (which includes spices and foods like garlic and onions), and astringent (e.g. pomegranates or black tea).
I was taught decades ago that carrots improving eyesight was an urban myth, though they were a healthy food none less. My dad, who had served with the British RAF said it was put about during WW2 to try and hide the existence of Radar from the Germans. The Germans of course were having none of it, and knew all about Radar, and had in fact developed their own systems which no doubt assisted Germany's air defensces in inflicting some of the heavy losses experienced by allied bombers over Europe.
So people just misinterpreted an army manual that stated "WHEN FULLY CLOTHED" we lose the majority of heat through our head and neck - whoever is writing your presentations needs some help.
I actually remember that from my time in the service. They taught that but with an asterisk on it, depending on environment and situation here are the basics
Makes sense. When most of your body is covered in insulative clothing, most of your heat loss will be through the bit that isn't covered. Hardly controversial - until someone oversimplifies it to nonsense!
In WWII RAF pilots were asked how they could see enemy craft in the dark. Radar was still top secret, but apparently if you eat lots of carrots (like a rabbit) you can see in the dark (like a rabbit).
It's infuriating that as a child I knew most of these things were nonsense (especially the hat one), and had logical arguments 'proving' it, yet got shot down all the time due to the 'common sense' argument. It's annoying when a child is smarter then the adults supposedly 'teaching' them.
The senses one sounds like it was more a redefining of what a sense is. Since Aristotle probably knew that people could feel pain, but didn't think of it as a sense as we understand them.
My biggest takeawy here is that Spock's blood should have been blue rather than green. They took the bit about copper based hemoglobin but they said it was green for some reason. Dang...
The "taste of metal" is the taste of electricity flowing through the battery you just made with the saliva in your mouth acting as the electrolyte, and the metal acting as an anode or cathode.
I'm in my sixties, I was never taught that deoxygenated blood was blue but the vein colour was pigmentation and light diffraction. It was usually parents that said eating carrots was good for eyesight to get kids to eat carrots. Pain and temperature are part of the sense of 'touch' and are not additional senses as such. Proprioception needs to be correctly categorized into exteroception, interoception and true proprioception. That which you describe is exteroception... the sense of balance is a proprioceptive property. To go into these concepts at pre-secondary education may be asking a bit much... Hänig, not Hahnig or Hannig. We were never told to put a hat on just a coat...(OK, this theory came up in the 70s... not in time to reach my childhood)
I feel like I've seen this before. Maybe Simon did a similar segment elsewhere, or some other commentator, or maybe I just picked up this info along the way of life.
Simon had a video about scientific principles being portrait "to easy" where he mentioned the tongue story at least. But since 80% of the TH-cam traffic goes back to our lord and saviour it should be quite often that stuff comes up double
My god, this is exactly what pissed me off beyond belief, why I was taught things one year in science, then the next year, to be told that was wrong, to be told what was actually reality, then the next year..."no this is how it is" I was like "WHY THE BLOODY HELL NOT TEACH ME THE KNOWN PHYSICS AND CHEMISTRY IN THE FIRST PLACE?????" The carrot thing I do know was a disguise when radar was invented....
Exactly. I can distinctly remember being quite upset about being taught election 'orbits' as how things were and then clouds later. Very distressing. I doubt that it even marginally disturbed most of my cohort though.
so you would want to teach 5th graders advanced quantum field theory and general relativity? You can always escalate the complexity of such a topic up and up and up more, you have to start somewhere
@dangernoodle235 no I'm not saying that... but you definitely know that those who design the curriculum are failed teachers, it's better to lead up to something, rather than say "these are election patterns" then clouds, then basically be relearning, in no way was I suggesting Quantum Theory should be taught to 8 year olds... I'll see what happens in a few years when my kids get there...but certainly in my education it started to get a bit annoying when you could teach kids things that are relevant, and if they have a higher proficiency in certain areas, then adjust for that. But I just feel like I spent a lot of time in the sc ientific areas, that were wasted. Not that I ever studied, but it was really annoying to spend time on one thing, then next year "no, this is how it actually works, then the same over and over again" I understand if it's new understanding happening. But it's a waste of time... in my opinion I'm not a teacher, but I have the feeling that those that devise curriculums, are those that became teachers and couldn't teach. And I would have happily learned Quantum Theory as early as possible. Unfortunately my physics teacher was not what you would call a great teacher. I have always been more into biology and chemistry, and mathematics when needing to adjust imperial to metric, grains to grams. But since children I got into learning about Quantum Physics, because it seems on average from a 4 or 5 year old the 7th "Why?" Means you're at the Quantum level...😆
@happyzahn8031 haha, it just annoyed me most because I can't study. I was later when I was about 33 diagnosed with innatentive ADHD. So yeah, most people in my class didn't care...but I did. Because I couldn't be bothered/never studied. I did get high enough grades in the end to go into medicine...but it just frustrated me that they couldn't just teach me something different, or whatever it is straight up. Because by the 4th year of that happening it was starting to be mildly irritating...but I'm sure there's things that hace changed now. I mean since I left Pharmacy I can't believe the insane policies and changes in scheduling and the supposedly safest medication has vanished... in much faster time than ever used to happen.
When we speak of senses, we're talking about our perception of the outside world beyond our own body, in other words,external senses. Sense of pain, proprioception, time, and balance are internal senses. Temperature is part of touch. Seeing light and seeing color are obviously part of sight. It doesn't even make sense to separate them from sight. Why would you do that? That would be like calling rough and smooth as separate from touch. Likewise, internal perception is not part of the external senses. You gave no information whatsoever to alter the 5 external senses.
I think he means that since blue's absorbed more easily by everything that isn't a vein, it's really the main color reflected by veins which is why they appear blue to our eyes. I agree it could have been worded better, though.
The skin is not a mirror. Wavelengths are absorbed to a degree (as with anything around that you perceive colored). Red apple reflect more of the red spectrum, but of course not 100%
3:31 That’s not what he said. He said that red wavelengths are absorbed more by the skin, and the blue wavelengths penetrate the skin. The light that is able to go through the skin is no longer white light, as some of the wavelengths have been absorbed. When it hits the flesh-colored vein, the vein looks bluer than it would in white light.
As far as heat loss through the head and wet hair making one sick, I would propose it’s the rapid change of temperature that causes issues. I remember getting sick one summer because I constantly had to go from hot, humid outside to cold, dry inside multiple times in a day. The constant environmental change made me susceptible to getting sick. It’s why you layer protective clothing for the cold so that you can add/remove layers as needed to remain at a comfortable temperature.
@@The_Real_Kyrros "Maths" is because the British are aware this is a contraction of "mathematics". Their mistake is in not calling it "math's" with the apostrophe signalling the removed letters. "Do the mathematic" is not right, so "do the math" is equally not right. But it has become a commonly accepted convention despite that. The use of "maths" without the apostrophe is an equally accepted convention in the UK.
@6:10 - two weeks late, but what the heck.... I'm surprised you didn't mention the boost to the "carrots give you good eyesight" myth provided by the British Ministry of Information during WWII. In order to keep from disclosing the existence of the advanced radar systems that let the RAF shoot down German Bombers at night during the Battle of Britain, they started talking about the excellent night vision of RAF pilots, due to all the carrots they were eating. I can't find a citation, but I recall hearing that this misinformation campaign wasn't declassified until the late 1970's. If my memory is accurate, that means that wartime propaganda designed to keep Germany from developing its own radar technology influenced my own elementary school curriculum.
Simon: "Your veins only appear blue. This is just a by-product of how the white light interacts with the pigments in your skin." Isn't the colour of EVERYTHING just a by-product of how white light interacts with it?
@castleanthrax1833 How do you think a laser works? What color light do they emit? Where in a laser diode is the "white light" and what is it interacting with?
@@castleanthrax1833 "Isn't the colour of EVERYTHING just a by-product of how white light interacts with it?" Lasers are included in "everything". Now do you intend on answering any of my questions or are you just going to deflect?
The idea that you'll catch a cold if you go outside in cold weather with wet hair is tricky. Obviously, simply entering a cold environment with wet hair won't make you ill. However, putting yourself in a situation where your body has to expend a greater portion of your energy to stay warm does have a negative impact on your immune system. Couple lowered immune system efficacy with spending more time in enclosed spaces with other humans, and you have the perfect combination of factors to catch an illness like a cold. So, sure, going outside in the winter with wet hair won't give you a cold...but it can certainly make it much easier for you to catch a cold.
This one is tricky, since while you cannot catch a cold by being exposed to cold (common cold is caused by viruses), there is a seed of truth in that "myth". When our body extremities are exposed to cold air for a certain period of time, your body will start limiting blood blow to the extremities, which also includes the nose and the sinuses. Since a cold nose is a dry nose, the cold virus particles can no longer be retained by the mucus and may reach all the way to the inside of the nasal cavity and up until the lungs, causing respiratory infections. This is why people with diabetes and compromised immune system get fungal infections so easily, the nose capillaries are atrophied, meaning less blood flow, less immune cells and lower tissue temperature, allowing fungus to grow.
_"Your veins are not blue, it's an optical illusion"_ It's not an optical illusion, you seem to be conflating way light works (in particular absorption) with some unseen 'true' colour . . . nope, if light stimulates the blue cones in your eye, the light is - definitionally - blue.
Although not exactly science related, it always amazes me that schools still teach that Christopher Columbus was the first European to reach the Americas when there is indisputable proof that the Vikings at least reached Newfoundland 500 years before Columbus.
I am a high school history teacher. Even in Texas, we haven't taught the Columbus myth for at least 20 years. We do talk about the 'Columbian Exchange' that got set up in his wake, but not that he was the first European.
I used to drive forklifts in a -10F degree freezer for 12 hours a day. One day I forgot my thermal knit hat, yea it was definitely more of a 10% difference of how cold I was. Never forgot my hat again.
I heard that the story about carrots improving eyesight was broadcast during 2nd World War. British planes had systems (onboard radar?) which enabled them to find targets more accurately. The story about carrots was one of the many subterfuges MI5 instigated to mask the otherwise exceptional accuracy of our bombing raids and avoid the Germans devising countermeasures. I don't know if this is true or if it had the desired effect..
Until it stops getting views.... does nobody pay attention when he speaks? "We are creatively bankrupt and we'll make the same videos over and over if people keep watching".
I didn't even know you could pronounce "Zur Psychophysik des Geschmacksinnes" (German) 10:14 like that. He makes it sound like a totally different language altogether. Impressive. :)
Right? He's normally fairly good at pronouncing German and it's still comprehensible when I'm only listening. I did not expect him to struggle with Geschmacksinnes nearly as much as he did. Half convinced he did that on purpose xD
Veins look blue through the skin because more blue wavelenghs are reflected. This is NOT an illusion. When blue light reaches your eye, we call it "blue", because it's blue. It's not difficult.
We're told at school that rainbows are caused by sunlight being refracted through rain drops, but this is one of those over simplified 'lies' Simon was talking about. It begs the question of why we see one great big stationary rainbow (ok, sometimes two) instead of a million tiny ones that follow a rain drop down to the ground? The REAL answer is far more complex than a 7 year old is prepared for, so we go with the simple version.
Rainbows are caused by the colours within sunlight being refracted through rain drops. We see one big rainbow because the rainfall acts like one curtain of water formed from millions (actually more like billions) of rain drops. A single raindrop does not produce a rainbow, it splits an incident ray into colours and if youi could see that from several miles away it wouldn't be an image like a bow. The reason the rainbow does not fall to the ground with the raindrops is that its position depends on the sun which obviously is not falling to the ground (or at least not in the timescale of the minutes during which a rainbow is visible), and on your position and you are probably not falling. To understand the rainbow image requires a geeometrical diagram showing the position of the sun, the observer and the falling rain, combined with ray-tracing of the incident and refracted rays of liight in their different colours. It's very complex and cannot easily be imagined or visualised but the physicists and science teachers have got this one right.
I was taught the first one in middle school. My teacher also said that arterial blood was red because it had more oxygen, but other veins were blue. I've had so many people tell me that there's no way a teacher taught me that and that I'm clearly remembering wrong. I'm super glad to see that I wasn't the only one who was taught this.
What do you mean? I quite literally learned that we have 5 senses and that the taste buds on your tongue have different zones from books in the late 80's and early 90's. They were most definitely things that were taught
@@captainspaulding5963 i was born in 2000 so maybe thats why, (im also from europe) but i wasnt taught most of these things, teachers even was explaining at school why these topics are incorreact
@avrillavignefanclub1927 yep, which is why I included the phrase "things that WERE taught". Gotta look for clues when reading in order to gather the whole story before commenting.
@@captainspaulding5963 That's the only one he covered in the list that I remember being taught to us in school (80s/90s), the rest were just myths passed along socially or perpetuated in media. Edit: I do remember being told we lose heat through our head, but this was from recess staff warning us to wear beanies before going outside. It wasn't like, part of the class or anything.
I am self-taught and I always hated how school taught that there were 5 senses. I already knew from personal experience over a dozen, so I was like "wtf are they talking about?". It's ridiculous. Just as a few examples: sense of direction (whether you're tilted/up/down etc.), feeling static electricity fields around you, feeling heat (it's not touch), feeling changes in air pressure (related to touch, but it's not touch), sensing when someone is watching you (has been scientifically demonstrated, but not explained how it happens), feeling the movement of a gyroscope, etc.
the first time a teacher explained evolution to me she said it wrong!! she implied that traits gained during life will be passed down (like if i lift weights my kids will be swole). years later when properly learning about evolution, we also covered how Darwin and subsequent genetic understanding literally proved those kinds of theories wrong and it made me retrospectively angry at that first teacher
What you're describing is Lamarckian evolution... Did you perhaps go to school in the Soviet Union? There was a whole push of Lamarckian evolution for ideological reasons, people like Alexander Lysenko were involved... So maybe your teacher was a leftover of that?
@@RoonMian I wish!! it was actually when learning about Lamarck that i had that "flashback" and was like... wtf.?? but no, neither the teacher nor i were from the ussr or the early 1800s. she just felt the need to explain evolution to her class of children but clearly had no idea what she was talking about and we were like 8 so no one could call her on it 😂 it wasn't even a science class
You will have fun telling wine snobs about the tongue, they actually shape wine glasses so when drank it targets parts of the tongue based on the flavor profile of the wine. LOL
The blood is used to test IV medications for bacteria. I know there's a Today I Found Out video on that one that goes into detail about how it is used.
The "lose body heat from you head" one is incredibly popular in Sweden. The number I had always heard was more like 10-20% though which seems pretty much correct.
That's the number I knew too, from education in Southern Africa where it's not that cold. Seems like this "80%" myth is indeed geographical (Anglo-American, perhaps?)
some flat maps do that because they have to warp something in order to get a round surface to be flat. they make the land masses closer to the poles bigger. but there's also a version that just makes everything looks super long.
@@danicorvin good I'm happy to hear that. Because when I was in primary school they did not explain that. At least it sounds like it's getting better then 🤷
For the heat loss one I think it mostly comes from misinterpretations. I was taught in school (though I don’t have scientific data to back this) that when wearing appropriate winter gear, 80% of the remaining heat loss was through your head. Keep in mind a lot of that heat loss comes from the air expelled from your lungs. What percent goes out of the top of your head, where a hat could help, would obviously be less and dependent on factors like having hair.
I got a good one. We're taught that biological sex is a strict dichotomy with very few examples of folks who break it. In reality, it's a pretty loose bimodal distribution and it's extremely common for folks to display primary or secondary sex traits of the "opposite gender". Gynecomastia in men is wayyy more common than most cis men want to believe, so is facial/belly hair on cis women.
Primary or secondary sex traits don't determine sex. No matter how many atypical sex traits are expressed, actual sex remains unaffected. It's all about gametes. You either make the big ones or the small ones. And yes, females have hair on their bodies as they are in fact mammals. Although they typically don't have as much as males, it doesn't mean they aren't female. Total misogyny. Turns out you didn't have a good one.
@@tinymutantsquid 😂 Nothing you said argues against my statement, genius lmfao And you're wrong about sex determination. Gametes don't determine sex either, it's possible for a body to produce both or neither. Chromosomes also don't determine sex, as there are people with XY's who have given birth and males have been born without a Y.
@@SirSpenace Cool emoji. No need to argue against points I didn't make, it's super boring. Chromosomes don't matter. Humans only produce 1 set of functional gametes. An individual’s sex is defined by the type of gamete their primary reproductive organs are organized to produce. Pointing out super rare intersex conditions are not only exceptions proving the rule, in those cases one set doesn't function, leading us back to my simple and straight forward assertion. As far as your grab bag comment, I agree, that's what I said, although I have no idea why you decided to argue against your first position. I guess you're confused, hence emoji instead of substance. Which makes your 'sex is determined by individual' comment make sense... you think you can just believe hard enough, and with enough emojis, you can change reality.
@@tinymutantsquid @tinymutantsquid Ohhhh there it is. The transphobia. You "there are only 2 sexes, cope" types always circle back to it. Congratulations on taking the most words I've ever seen to do it, I'm sure it makes you very proud of yourself 🤩 Here's a trophy🏆 I'm not arguing against myself. And using an emoji doesn't discount anything I've said, the fact that you're resorting to such a logical fallacy is very telling 😂This is the internet, if you can't handle emojis maybe you should stick to books. My comment about chromosomes was only because your gamete hypothesis is a hair's breadth away from "XX=Female//XY=Male" stereotype. And it's cute that you like to pretend that variations in things such as gamete production and chromosome expression don't come attached to very real humans, but they do. You can't poopoo away their experiences and feelings just because you want to be an absolutist about sex determination. There are quite literally millions of examples alive today, it doesn't matter how rare or exceptional it is. Those are still people who deserve to reserve the right to determine their own sex. Unless of course you're advocating for "corrective" surgery on infants. Which, by the sounds of your disgust towards the sexual deviance, would seem to be a logical assumption.
I always interpreted the “majority of heat lost through the head” thing as comparing winter clothes without hat to winter clothes with hat - not to naked with hat (which was so self-evidently wrong that it didn’t bear even cursory consideration as a possibility). The one I *do* believe is that if you’re riding a motorcycle and your hands get cold, better gloves will do you a lot less good than your ordinary (motorcycling) gloves + a scarf or balaclava. People leave their neck exposed because “it’s only my hands that feel cold!” not realising that their body is compensating to keep their neck feeling OK by not warming their hands inside their gloves. (At least, my own experience with motorcycling is that a scarf is better than upgraded gloves. Obviously not comparing to no gloves at all, because, again, that would be silly.)
Slight slop of tingue at 3:39 . It's not that the blue wavelengths are absorbed. It's the fact that they are reflected that gives the appearance of something being blue.
The Bohr model of the atom was known to be incorrect since at least 1913. Max Plank had the basis of Quantum mechanics published back in Dec 1900, and it was mostly fleshed out by Dirac, Heisenberg and Schrödinger by 1930. Yet here we are over 90 years later, and they still teach the Bohr model in high school physics and chemistry, with no word of it being a simplification.
Either you're republishing videos, or you're recycling facts from different videos. Either way, I'm not a fan of that. I distinctly remember you talking about the five senses factoid before.
I think the last time he brought that up was in a Today I Found Out video, so I think it's a case of different writers from different channels overlapping.
@van_trippin5260 he's explained MULTIPLE times that he retains next to no knowledge from the scripts he's reading. You shouldn't expect him to remember anything
Chemistry: Nah that Bohr model was all BS, actually, the orbital theory was all BS, actually, atoms have an infinite size but only probabilistically exist in this tiny area… why couldn’t we just skip all the BS, it’s not like anyone understands that either
The notion of a pain receptor is the exact oversimplification you are talking about. No such thing as a pain receptor exists, we have nocicpetors that detect potentially noxious stimuli in various forms and if their input makes it past the spinal cord and up to the brain then they have the potential to generate a painful experience. However even this short statement is a gross oversimplification of the wonderful world of pain science. I doubt you have a lot of spare time to explore such a fun topic with all the great content you produce but if you get the chance or anyone else in the comments wants to go down the rabbit hole of pain science I highly recommend it.
Wait can you touch on what color are the actual veins themselves? Are they transparent allowing red blood to be visible? Are they red for another unexplained reason? I'd also love more information about why red veins look blue when seen through skin.
9:15 I can’t believe how many times I have had to argue this. It’s baffling that people still believe it as if they can’t experience taste across their whole tongue every time they eat
I clearly remember reading in a school textbook that you could verify the taste map at work by touching salt with the tip of your tongue and you wouldn't feel the saltiness. I tried it and, well, maybe it was a placebo saltiness? Science can't be wrong can it?
Hi big fan here! I think my hearing is getting worse. Despite English being my primary language, I'm having a hard time understanding half of what you're saying. I'm thinking it's too fast and your sentences go up and down in amplitude so much that I only catch a certain amount. I use close caption to watch your show now. There are other youtubers that I'm increasingly having problems hearing but then there are others whose sound engineering seems to be easier for me to hear. For example, Attenbourough's speech patterns are still very clear. I'm sure many with younger ears will disagree with me but I implore you to consider those of us whose hearing isn't quite perfect and is getting worse. Maybe do an episode on voice broadcast engineering or something along that line? Thanks for listening and keep up the great work!
An optical-filtering effect is not concretely just an illusion. A sunset appearing red due to filtering of shorter/blue wavelengths serves as an example of the same physics at work. In each case, the wavelengths arriving to the eye are not incorrectly perceived or interpreted.
Check out any textbook diagram of the CVS - they (almost) all show the veins as blue & the arteries as red. Still wondering where the misconception comes from?
Nerd fact: Did you know that a "self lapping" electro-pneumatic brake for Tube trains developed in the 1930s and still in use on some stocks is directly based on the vestibular system of the inner ear? Also on the topic of sensory perceptions... what is the sense that enables me to touch the tip of my nose with a finger while my eyes are closed? How do I know where my nose and finger are?
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in what country are told blood is blue ??? first time ever I hear this. I am 59.
edit: and what about the temperature loss through the head ?? really ?? again, never heard of that. I was brought up in France and move to UK in 1998.
neither in France nor in UK have ever heard those "concepts".
Going out in winter "with just a hat and buck naked. This doesn't make a 😏TINY bit of sense. "
Package may shrink in cold weather.😏
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How can a smart guy like you (Simon) have absolutely zero German skills? Why don‘t you at least type the 4 words in google translate or so to hear how it‘s pronounced? Roughly right would be way better than completely wrong
"The amount of energy needed to refute bullshit is an order of magnitude bigger than that needed to produce it." Alberto Brandolini
That's THREE orders of magnitude greater, at least!
😂
Based
And yet the entire existence of youtube and liberals is to completely undo and tear down ever fact or standard that has ever been established.
@@markbrowning4334 Name one.
We know carrots are good for eyesight by the lack of rabbits wearing glasses.
another myth, more than little bit of carrots will cause diarrhea in rabbits. Any root veggies + fruits will work like that for rabbits.
*pushes glasses up* axshually....they are really bad for rabbits. not to say the same level as dogs and chocolate, but certainly not something good to have in their diet overall.
What do bunnies need such good eyesight for anyway?
@@nekomatafuyu Hah! to see which way the foxes are coming?
TooL: Undertow track 69 "Let the rabbits wear glasses"
When I was little, my older brother convinced me that our blood is really blue and it just turns red the instant it touches oxygen, which is why we never get to see the blue. He proved it by showing me the veins in my forearm. I was convinced.
Fast forward to 7th grade science class and the teacher is talking about blood and why it's red. I _almost_ raised my hand, with the intention of correcting my teacher, when it suddenly occurred to me that my brother might be fucking with me. 🤣
I'll never forget that and it's one of my fondest memories. 🥰
That's a common thing that used to "folk knowledge". I used to be told it all the time as a kid by adults, and I would have to correct them.
That's a Spinal Tap joke.
I probably would have barged right in to 'correct' the teacher. My COMMON SENSory organ must be faulty😄
Your bro wasn't fcking around with you, the teachers were fcking around with your bro
@@bipolarminddroppingssometimes the school stops telling the lie. But at the same time, who cares. Why teach it to kids? This for someone that may want to know because they decided to follow the education of the body to be a doctor or something!
Why would anyone else care?
1:15 - Mid roll ads
2:20 - Chapter 1 - Deoxygenated blood is blue
4:15 - Chapter 2 - Eating carrots improves your eyesight
6:35 - Chapter 3 - Human have 5 senses
9:10 - Chapter 4 - The taste map
11:55 - Chapter 5 - You lose 80% of your heat through your head
You are truly wonderful 🐳
❤a golden beacon in the dawn
Saved me 15 minutes. Thanks!
thanks for saving me time watching a dumbass video
Thanks. Don't need to waste my time now
12:55 If you read at the actual sentence quoted, you see "when fully clothed". It makes sense that the majority of heat loss would be from the uncovered parts.
Yeah, that, and no one actually believes that, when fully naked, 80% of heat loss comes from the head. If they did they would rush to cover their head when it's cold, while everyone prioritizes covering the rest of the body.
With the first one, you got it backwards - it's the blue wavelengths that are LESS absorbed (which it why you see the blue).
Came here to say this. Blue has harder time penetrating and so reflects more. Red penetrates better and is absorbed. Reflected light is blue so we see blue.
So....why is the sky RED at sunset when the sun is shining through more atmosphere, rather than at noon when it isn't and looks blue?
@@TheRealRedAce Blue light (the shorter wavelengths) is scattered more by the atmosphere. When sunlight travels through more atmosphere, the blue wavelengths are scattered away from your line of sight, allowing the reds and oranges (the longer wavelengths) to dominate.
Blue light (the shorter wavelengths) is scattered much more than the longer wavelengths by the atmosphere. When sunlight travels through more atmosphere, more blue light is scattered away from your line of sight, allowing the reds and oranges (the longer wavelengths) to dominate. This is different from reflection off a surface, where the reflected light is redirected in a single direction, whereas scattering redirects the light in multiple directions.
to be fair to that military manual, it *does* say "when fully clothed". so its not claiming that a person that is naked except for their hat is better insulated.
No, but even mentioning the heat loss from head doesn't make sense. If written more accurately, as in heat will be lost more from any part of the body not covered than from those parts that are covered, it would be obvious how redundant it is to even mention it.
@@loganmedia4401 nah, i think it makes sense to mention it. I mean, right off the bat, generally speaking the head, hands and neck are the last things you expect a person to cover when dressing themselves. Also its way easier to underestimate how much heat youre losing through your head as opposed to your hands or neck
@@loganmedia4401 and yet people constantly go out with parts of their body exposed because they are wearing a coat....
Almost like you are proving why the saying is necessary
Yep. Also, it says "head and neck". The front of the neck has major arteries fairly close to the surface, but is often uncovered.
Remember that something like a military manual isn’t written to be true, it is written to be useful.
Soldiers in winter survival situations should wear a hat… this data, sloppy as it is, supports that…
Done.
I was told the overemphasis on carrots improving vision was British wartime propaganda to obfuscate the implementation of radar. I.e. "How the bloody hell do you Limie's keep spotting our bombers‽"
"Carrots mate."
Correct. This wasn't just a rumor - British and US governments printed propaganda flyers and posters advertising this, especially after a much more advanced radar tube was developed in the US in 1943. The Germans actually had a primitive radar system, but it used a lower frequency (not microwave frequencies), and wasn't remarkably effective. The carrot propaganda was designed to hopefully stagnate the German discovery of the more advanced radar, and the carrot/eyesight myth carried forward into Baby Boomers from their parents, most of whom didn't know the truth behind the propaganda posters they saw. Many of those Boomers became teachers, and taught Gen X the carrot myth. It was so prevalent through the 1980s that it could be found in school science books as a "fact".
Yep! ...and it caused the German Luftwaffe to eat massive amounts of carrots.
I was looking for this comment 😊
Apparently it was a quick thinking reply to a question during interrogation of a captured pilot, inspired by the government propaganda ploy to get children to eat carrots during rationing.
When teaching General Chemisty in a University I tell my students that most of what they will get in this class are: "Lies, half-truths, and approximations." The truth is just to difficult.
@@zahadou
You are correct😅
I had to retake intro to Chem after getting a bachelors degree in physics, I talked to the professor asking for help because I was so confused due to how many lies and half-truths there are. He tried to tell me everything we were learning was 100% accurate. I stopped giving a shit after he told me that.
@@CoffeeLoki67879
Yeah, well, you have to understand the basics (which are just that, basics) before you can get the higher concepts. How many times in physics is friction ignored? Real? No, but still valuable.
@@zahadou "I've no idea what you teach"...... it's the first sentence of the comment..... were you just looking for mistakes to point out and ignoring everything else?
Thanks for reminding me that Universities were complete waste of time and money and you took a paycheck for it.
My mother had a blood draw done and her blood was _pink_ ... she had leukemia. If your blood looks anything but what it _should_ look like, it's bad.
Blood can also be pink due to hyperlipidemia. Basically, lots of fat in the blood. The fat adds a white color, mixed with the red of normal blood makes it pink.
@@thecaneater In her case, this was the reason.
She could be a klingon (from the 6th movie, more specifically-all the others are assumedly from the north 😂
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The tastebud map is more wrong even than presented in the video. You have taste buds all around your mouth, especially including the inside of your cheeks and your soft palate. I’m particularly appreciative of this having lost 90% of my oral tongue to cancer in the last dozen years. Also particularly aware of it: I can *sense taste happening* in those parts of my mouth much more than I used to.
That’s really interesting. I had no idea about that. Also fcuk cancer - I’m sorry you had to find out that way.
Babies lose a lot of body heat through their heads, relative to adults. But only because babies head are proportionally larger than adults. It's not a huge difference but it is important to cover their heads when outside on really cold days.
Babies have big fat heads. They look like aliens
It really depends on how much hair you have, and what kind. I had a friend who had very thick, bushy hair. Confining it in a hat squashed it down, decreasing its insulative qualities and making him colder. This is why you really shouldn’t put a coat on a fluffy dog in the winter, you’ll actually make them colder.
Babies also just get cold more easily in general, because they have a much higher surface-area-to-volume ratio. So keeping them warm is important.
@anna9072 I think it depends on the breed. Some dogs like pugs recommend having a coat if it's too cold.
@@bluex610 yes, certainly breed matters, that’s why I said “fluffy dogs”. Pugs are short-coated, and they’re also small, so would lose body heat faster. But I’ve seen people put coats on dogs like huskies.
I remember my science teachers in school being pretty honest. They told us alot of what we would learn is simplified and thus wrong. But it's the building blocks you need, to pursue science at a higher level.
I think that's a lie!!! 😮
You can't build up from a lie 😢
Teaching the basics is better then lying about the whole truth!
You build up from the BASICS
Any one that says otherwise is lying or at least misinformed and didn't think about it!
Misinformation is a big thing these day's in everyday life!
I wander why!!
That deliberate teaching WRONG things to children to "simplify" them is COLOSSALLY STUPID!! The only "simple" thing there is the dunderhead who came up with that idea! They tried it with spelling in the 60s in the UK and produced an entire generation who couldn't spell. NOW they're doing it with arithmetic with their idiotic BIDMAS/BODMAS nonsense. Now we'll have a generation who can't do mathematics!
Water will conduct heat away from your head faster than air. And as it evaporates it will remove even more heat. That’s why sweating works. Those effects still happen at cold temperatures and happen whether it’s sweat or applied water.
Very nicely put. I tried but failed to be this concise, explaining this reality.
Absolutely true and well put, but this upholds the fact that one will "be" cold if going outside with wet hair, not the folk myth that we will "catch a cold" if going out with wet hair. That requires one's system to be exposed to an infection, not just lower temperature. When I was a child in the 70s, all the responsible adults seemed convinced that one caught a cold simply by being too cold.
If it's really cold, the water turns to ice, which is a pretty good insulator. Once the hair next to your scalp, warmed by body heat, dries out, creating a pocket of warm air, it's kind of like wearing an insulated helmet.
Something I rarely see mentioned about the human sense of temperature is that the "hot" and "cold" sensitive nerves are physically separate and distinct.
Feeling "hot" and feeling "cold" are orthogonal vectors, and you can simultaneously sense both "hot" and "cold" at the same time!
This is what Menthol does by the way. Similar to how Capsaicin stimulates the "hot" temperature receptor, Menthol stimulates both "hot" and "cold" receptors at the same time.
And sometimes when we have fever I guess
My (possibly apocryphal) understanding was that the "carrots are good for eyesight" was actually a WWII disinformation campaign to explain why US and British pilots could spot enemies nearly over the horizon and/or had exceptional night vision, when in fact they were being spotted by radar, which was, at the time, a secret.
Spot on
Was coming to comments to say this lol
I love it when someone busts out history.
I look forward to Simon debunking that in "5 myths about propaganda you probably believe".
@@francisboyle1739 there are actual advertisements and posters from ww2 that say things like “night sight is life or death” and go on to list vegetables high in vitamin a including carrots and that it’s essential for vitamin a to be eaten for good night vision. It was truly used as a cover to try to explain away why the raf could find and shoot down German bombers before they even hit the British channel because they were trying to keep the onboard radar on their planes a secret.
0:45 Last time some idiot declared himself an alpha male in my presence I asked them, "What, like a chimp?" oddly they didn't act very alpha after that they got kinda whiny.
Return to Monke
Lucky he wasn't an Alpha male, probably...😊
Actually the whole alpha thing comes from studies of chickens. Not roosters, chickens. Females.
@jrector666 so I guess being hen-pecked is pretty normal...
i mean… a chimp can rip your arms off, so as far as strength goes that’s not really that much of an insult. also, a lot smarter than wolves.
yeah, calling yourself an “alpha” is lame as hell, but so is bragging about something you may or may not have actually done to strangers on the internet. oddly enough, it’s very much the same behavior of self appointed “alphas” 🤔
The oxygenation state of hemoglobin changes its IR spectrum, this is used in NIRS imaging. Thus your blood *does* change color, you just can't see it.
"No con-senses on how many senses we have" is how I heard it, whether intentional or not, well done
I did a “Taste Map” test in school. & I was told I was wrong when I refuted this idea. Ok.. sure… whatever
Same, so I always knew that map was a lie. I also had a few teachers who believed urban myths.
The sadest part about this, is that you're clearly a thinker that challenges the norms and generally accepted misinformation.
But being told you were wrong, damages that important spirit, crushing it back into conformity.
I hope you managed to retain the independent thought needed to explore, discover, and learn the real truth, wherever you sought it. Go get it back NOW, if you didn't.
Elementary teachers have a penchant for being under-educated, ironically.
it gets worse now quantum physics is part of the syllabus they have made the photon a particle, even though many have disproved it..
Same, except my school acknowledged the inconsistency and said that's why the map isn't on the test - just the list of senses (but they still liked to see kids do the test and see if they thought for themselves).
This was many decades ago btw.
Something similar happened in school to my dad btw, when they tried to teach him that the number of grains of sand on a beach were infinite, and he refuted the claim by noticing that the earth itself is finite. Obviously, for the number of grains of sand to actually be infinite the earth which contains the sand would also have to be infinite. His teacher did not accept his refutation, sadly.
As a german i realy appreciate the attempt of pronouncing the title "Zur Psychopyhsik des Geschmackssinnes". The later half definitely put a smile on my face. :) By the way, love your content!
I remember when I did my first year college courses and so much of it was the teacher saying something akin to, “You were taught this in high school but it’s not correct. This is what the science actually says.” Many of my fellow students were very resistant, confused, and upset about it.
Must be a pretty backwards society when you literally have to unlearn shit that you were taught as truth only a year before. Like can we just skip the lies and go straight to the truth ? Who decreed that lies were a mandatory part of the curriculum ?
in grad school they tell you the same thing about undergrad, it’s kind of a turtles all the way down sorta deal
@@VincentPaulS I only had science electives for my film undergrad. Then I went and got an MBA because I’m a masochist. There was less of that in Business school.
Heh, in my first year Psych classes half of them were "This is the popular science version of X experiment. Here's the actual paper, go read it and tell us how the popular science is incorrect."
Things like the Milgram experiment, Stanford Prison, Calhoun's Rat Utopia... and so on, and so forth. By the same token, my first ever lecture in applied psychology had a 15 minute diatribe on how early social scientists obsession with math and quantifying everything is equal parts amazing and destroys psychology. :D
Centrifugal Force, when you spin a ball on a string it is held in orbit by Centrifugal Force. My grade school science teacher explained this with a straight face. Then in college physics, no such thing. It is Centripetal Force = mass x velocity2 / radius. He could have said we call it Centrifugal, but this is just a name we assigned to represent a set of advanced math calculations we have not covered yet. I wonder if he actually knew the correct answer?
One huge issue in science education that needs to be corrected: We all know that one needs to be taught simpler things early, and more complex things as you get older. And we generally agree that it would be good for kids to know the HISTORY of science. So, because science was simpler in the past, this got turned into a widespread practice of teaching old science to youngsters and newer science as you went up in grades, until only the most advanced post graduates got the most recent understandings. This is why you are constantly being told by teachers that what you learned in previous grades was wrong, or at least misleading. We need to STOP this. Instead of teaching young kids old models of the atom, we need to find a way to teach them the current conception of an atom and particle physics, but simplify it to conceptual ideas they are ready for. Completely throw out old and obsolete notions, and teach ONLY current science, but in very simple terms, that becomes more nuanced in higher grades. Then, if some history, physics, or medical major wants to take a separate class "The history of scientific ideas" for example, they can do that and learn interesting but scientifically irrelevant things like, "Oh! They used to think the sun revolved around the earth" or "Wow, they once thought an electron was the smallest particle - weird."
While teaching kids old information as if it were current is indeed a problem, I feel like you're veering too far towards the other major problem in science education: teaching science as a collection of information instead of a process. The various historical models of the atom aren't important. And unless you're a chemist or particle physisist, neither is the current one. What's important is why those models were initially accepted, how we determined each of them was wrong, and how that led to the next wrong model.
Building models based on the available data, testing them, and adjusting based on the results. That's what science IS and what's important to instill, despite schools generally being awful at it.
@@Riven_5 Yes I agree with that being important, but people should know the major general consensus of current scientific theories as well. They should know basic physics, biology, etc at least.
Cough conventional current cough
@@Statalyzer Yes, absolutely. Conventional is what should be taught.
I used to think the election was the smallest, then i realized those running in the election must be smaller...
On the topic of the senses, if we're going to divide up touch, pain, and temperature into separate senses on the grounds of their being mediated by different kinds of sensory nerves (when all three would have been included under the umbrella of "touch" in the Aristotelian model), it's only fair that we do the same for light vs. color vision. Or for that matter, even the three different wavelengths of colored light we have cone cells for!
On the other hand, if you think saying we actually have four different senses under the umbrella classically called "vision" is silly, perhaps it's also fair to say it's silly to say we actually have three different senses under what was classically called "touch". (Balance and proprioception, on the other hand, are indeed new discoveries.)
I can at least accept the sense of temperature being separate from touch since it works for both gauging ambient temperature as well as temperature of objects through contact. Pain, though? That's just touch, but harder. And yes, extreme temperatures can cause pain, but do so through touch. At worst, you can call pain and temperature pseudo-senses under the umbrella of "touch."
@semaj_5022 Something I rarely see mentioned about the human sense of temperature is that the "hot" and "cold" sensitive nerves are physically separate and distinct.
Feeling "hot" and feeling "cold" are orthogonal vectors, and you can simultaneously sense both "hot" and "cold" at the same time!
This is what Menthol does by the way. Similar to how Capsaicin stimulates the "hot" temperature receptor, Menthol stimulates both "hot" and "cold" receptors at the same time.
Also, you have olfactory receptors all over your (human) body, not just your nose. There are olfactory receptors inside your stomach, in your armpits, and on your genitals.
Your body, like most animal life, has a distinct sense of being poisioned. One of the only parts of the brain which directly comes into contact with blood, is dedicated to sensing poison, and will immediately eject the contents of the gastrointestinal tract out of either end until the poison is gone.
The sense of carbon dioxide ppm dissolved in your blood is the sense of suffocating and needing to breathe. (You can't sense the oxygen level, only excess carbon dioxide. This is why hypoxic atmospheres are so dangerous: everything feels "normal" until you lose consciousness and die.)
@@juliavixen176 Speaking of olfactory receptors, if we are to extend the principle of "pain and temperature use different nerve receptors than regular touch, so they're distinct senses", then that would also imply that we have hundreds of different "senses", the vast majority of which are just the different unique olfactory chemoreceptors.
The 'alpha' thing is funny though, because now whenever some guy says he's an alpha it's obviously a sign that they don't have a clue about anything.
Especially that he scores high on the psychopathy scale...
I always thought when someone claimed to be alpha, they really meant they were scared
Or you can think of it as being an indication of self-awareness. After all, 'alpha' denotes the initial version of a product that is first given to testers.
Their development teams just released these guys to the public prematurely. They need more UX testing.
alpha/beta/sigma/etc. are genders for people who hate genders.
Your section on "do eating carrots improve eyesight" is interesting but there is another aspect. The first British aircraft to carry radar was the Bristol Beaufighter which was designed just before WW2. It was used as a night fighter during the Battle of Britain. The British Government became aware that the Germans would be suspicious about the increasing numbers of their aircraft that we were shooting down. This led to the British press publishing a number of fake cover stories which said our pilots had found eating large amounts of carrots had altered their night vision. This was done as the Germans were monitoring the British press. A few years later the Germans tried eating large amounts of carrots and found it did not help night vision. After WW2 this story was passed onto British children from their parents. This was mentioned by the British TV programme World War Weird.
Reply I learned this same information from The Fat Electrician (another TH-camr who does video about military stuff). Basically the carrots thing was intentional misinformation.
... does* eating carrots improve eyesight
@@einundsiebenziger5488 Carrots are a source of carotene which is converted into vitamin A. Insufficiency of this will lead to poorer vision.
Yes, I have heard the same story: that it was the British government that popularised the myth that carrots improved your eyesight ( specifically in pilots) as a way if covering up the use of radar. It had its source in the fact that carrots are a good source of vitamin A, which is needed to maintain eyesight.
I have also heard that the Germans did not believe it and thought the British were trying to conceal their improved radar. The British were really to conceal the code breaking at Bletchley Park
After I left school (when it was all trees round here, etc.,) I became an autodidact, and was neither surprised, nor disappointed, to find that a large proportion of what I had been taught at school, in multiple disciplines, was utter bollocks. It may be better nowadays, but I doubt it. A friend of mine, who enjoys taking part in pub quizzes, told me that a team comprising teachers from local schools, seem to always do badly, and often give out ludicrous answers to fairly simple questions. Do they all work from source books now? It's a sobering thought.
yeah its one of those weird ones, where i partially get why its done, and also hate it overall. there is also ofc pure incompetence in so many ways like "new math" that they keep trying to teach in america despite it fundamentally being flawed. my dad PROVED it mathematically to the school board in GA when my sister was in grade school. So GA removed it form the curriculum, but its still being taught in a lot of places in america.
As to the kind of things where im like "yeah i get that you are teaching it "wrong"", E=mc^2 is ridiculously difficult to understand. like that one equation is taught as a course of its own AFTER you have taken multiple other advanced math courses. so ofc high school or middle school isnt going to do a good job of explaining it. there are other concepts that are true 99.9% of the time, but explaining that .1% is again something you would learn while getting a masters in that subject. its again understandable that its "dumbed down" and "wrong". i still think that over all it could be done better, but the point stands that in some instances it really is the only feasible way. Where the real issue lies is twofold: most of our textbooks are 20+ years old so have a lot of outdated/incorrect info and so much no or then is dumbed down that just does not need to be. just because its going to take 10 minutes to get it right they mangle it so it takes 5 minutes instead.
The frustration with telling people about the extra senses is that they all want to lump it in with just touch, even with proprioception they will argue you are feeling your body through the touch with air and what not.
It's honestly really difficult to conceptualize proprioception for a lot of people, I'd imagine. The sense does utilize touch, but it also uses sight, hearing, balance, etc, along with your brain's mental map of your location and understanding of direction and time. It's a lot easier to picture it as "knowing where you are by everything you're touching," wrong though that may be. Brains are the most difficult thing for brains to understand.
@@semaj_5022 You no doubt use all that information to keep track of the state of your body, but proprioception itself is a distinct sense with specific sensors for it in the limbs.
I know someone who fell off a bike and suffered a broken arm. He said he knew it was broken because it felt like his arm was in one position, but when he looked, it was pointing off in a different direction.
If you lose your sense of balance, as many people have before, it will become immediately obvious to you that it is a distinct sense all by itself.
@@covereye5731 my friend keeps saying "tactile" "tactile" every time I've tried explaining different senses to him over the years lol. It's maddening
Balance, Time, and Pain are completely unrelated to skin and touch.
E.g. emotional pain caused by finding out someone cheated you or made up stories about you.
So there are definitely at least 9 senses - not 5.
Wait, didn't the carrot myth get started as a wartime ploy to keep the Germans from finding out that Bletchley Park had broken the enigma code?
No it had to do with radar and was used to explain how RAF pilots were seeing in the dark. Also carrots were an easy to grow food so encouraging people in the UK to eat more carrots was also a way to help with food rationing.
@thehomeschoolinglibrarian I thought the cover story was that RAF were seeing targets better "because carrots", but it was the fact that the code was broken so the RAF knew where to hit.
@@captainspaulding5963 I thought it was to cover up our use of radar too. Found this on BBC Science Focus;
"To prevent the Germans finding out that Britain was using radar to intercept bombers on night raids, they issued press releases stating that British pilots were eating lots of carrots to give them exceptional night vision."
@@TheDJPCol oh hell! Had them confused!! Thank you :)
Ist was radar and a special aming optic for the anti aircraft guns. Both helped britan to win the air war. To cover it up, they used the carrot myth.
At no point in my life did I interpret "you lose 80% of your body's heat through your head" to mean that a fully naked person would lose 80% of their body's heat through their head.
“It’s easier to fool a man than to convince him that he’s been fooled”. -Mark Twain
I think that blue blood part is a myth confined to the Anglo-American cultural space. I'm from Eastern Europe and I haven't heard about this in my entire life. Not as kids, not ever.
me too, i was like wtf
i cant believe anyone thinks that?
I’m English and have never heard it either.
If it is Anglo-American, it never penetrated my neck of the woods.
I am from New Zealand and have heard of this blue-blood myth somewhere. I can see blue-looking veins in my arms even though this is an optical illusion.
I am African and I have never heard of this blue blood myth either
My elementary school teacher was an idiot. She insisted that the American Civil War was fought in the 1840’s. And that the dinosaurs were killed by the ice age. After getting marked wrong on tests for saying otherwise, I told this to my “wonderful supporting” parents, they actually took the teacher’s side: saying that I should have wrote what the teacher said, as I would have gotten those tests questions “correct”.
A story reported in the news in recent years, was when a teacher reported a young pupil for disobedience and disruption, when they argued with the teacher's claim that one kilometer was a greater distance than one mile.
Even though the teacher was wrong and the pupil right, the pupil was STILL suspended for being argumentative, when the school agreed with the teacher that the pupil accepting the teacher's word as gospel was more important. Wow, are we heading for catastrophe, when the importance of FACTS being RIGHT is worth less than brain-dead obedience.
PS extremely sad to hear your parents taking that same blind obedience route, and not realising and appreciating your cleverness in understanding the deeper story.
It's the kinda thing that scars people for life.
Sounds like you at least comprehend WHY they took that stance, and even understand how and when you might need to apply this "toe the line" strategy.
There are times (like, when writing a PhD) when suggesting the controversial can win brownie points - but even that depends on whether the people assessing your thinking prefer the notion that you challenge the accepted norms, or fluff their tail feathers with some "yes-men" flattery.
Ultimately, if your career leads to the need to break traditions and find new ways (rocket science, for instance) then you need to keep pushing the boundaries.
On the other hand, a career in sales and customer helplines means having to accept "the customer is always right", no matter how daft their expectations.
@@bythelee School traditionally wasn't about educating children, it was about turning them into obedient workers and soldiers. There seems to be a lot of inertia in the system tho.
@@bythelee Even more scary given the rise of fascism we are starting to see.
Remember that half the population is below median intelligence.
@@bythelee I always think back to the immigrant attending college that got accused of rape. Another student, the woman, accused him of rape after she regretted sleeping with him. Guy is cleared as footage clearly shows her literally dragging him home. School still expells him and says they don't let rapists go there.
Justice, welcome to America.
I can't say this is wrong, but most schools taught incompetely how our solar system moves in space. Most school system ignores the sun also moves through the galaxy.
Very true! And the fact tha5 we are "tilted" relative to the suspected plane of the galaxy, as well as where er are in the "thickness" of that plane..... among other things.
I do suspect that these things would make the topic too complex for young minds.
Heck. It makes MY brain ache😅
Having been interested in astronomy for over sixty years, the teaching of astronomy in schools is probably a bit over simplified imo. But in fairness, as many schools ( here in the UK at any rate ) only cover astronomy as part of a broader general science curriculum, the teaching staff probably haven't got the time to go into it in any depth. When I was a kid I learned far more about astronomy by visiting my local library and from my local astronomical society than I ever did at school.
@user-lt9py2pu6u great point! School at this level can really only afford to he a brief introduction. Trying to go this in depth in every subject would be a nightmare.
With regards to Mech and Duvall's work, there genuinely is no such thing as an alpha male: only sociopaths and malignant narcissists who demand to be worshipped like gods.
Spot on!
It's like the "Great Man" theory of history (also debunked). Sure, you can be skilled and well adjusted, but that won't magically make you a leader or more successful without the right circumstances. Even a "beta" male can get along well with others and find happiness.
Generally, the notion that "prolonged exposure of the human body to cold temperatures" automatically means "catching a cold". A common cold is caused by coming into close contact with a person who already has a common cold and is infectious. Cold temperatures might contribute to decreasing your immune system's ability to fight off the infection without you ever experiencing any symptions, but it's perfectly possible to catch a common cold and get sick on a hot summer day, and it's possible to expose yourself to cold temperatures without getting sick because you never came into contact with an infected person.
In ayurveda, the six tastes are bitter, salty, sour, sweet, pungent (which includes spices and foods like garlic and onions), and astringent (e.g. pomegranates or black tea).
I certainly don't think of pomegranates and black tea as having similar taste.😂
@@ceilingfan12345 Technically, they're both (mildly) acidic.
I was taught decades ago that carrots improving eyesight was an urban myth, though they were a healthy food none less. My dad, who had served with the British RAF said it was put about during WW2 to try and hide the existence of Radar from the Germans. The Germans of course were having none of it, and knew all about Radar, and had in fact developed their own systems which no doubt assisted Germany's air defensces in inflicting some of the heavy losses experienced by allied bombers over Europe.
So people just misinterpreted an army manual that stated "WHEN FULLY CLOTHED" we lose the majority of heat through our head and neck - whoever is writing your presentations needs some help.
I actually remember that from my time in the service. They taught that but with an asterisk on it, depending on environment and situation here are the basics
sure. that's where the disinfo came from. Some super influential guy misinterpreted an army manual. Thanks for straightening that out for us.
But how much of that heat loss is through respiration. I would think the majority. Strange it wasn’t considered.
Makes sense. When most of your body is covered in insulative clothing, most of your heat loss will be through the bit that isn't covered. Hardly controversial - until someone oversimplifies it to nonsense!
In WWII RAF pilots were asked how they could see enemy craft in the dark. Radar was still top secret, but apparently if you eat lots of carrots (like a rabbit) you can see in the dark (like a rabbit).
It's infuriating that as a child I knew most of these things were nonsense (especially the hat one), and had logical arguments 'proving' it, yet got shot down all the time due to the 'common sense' argument.
It's annoying when a child is smarter then the adults supposedly 'teaching' them.
The senses one sounds like it was more a redefining of what a sense is. Since Aristotle probably knew that people could feel pain, but didn't think of it as a sense as we understand them.
Senses used by non-human organisms are even greater in variety and number.
Such as...
That army manual clearly stated a FULLY clothed person loses most heat from head and neck area 😂
My biggest takeawy here is that Spock's blood should have been blue rather than green. They took the bit about copper based hemoglobin but they said it was green for some reason. Dang...
Wouldn't he have had "cupriglobin" then? ....as "hemo" implies iron by definition.🤔
Smell and taste are really the same sense. When you smell, you're just tasting the air.
If you go outside with wet hair, you might not catch a cold, but to some extent save on hairgel tho
The "taste of metal" is the taste of electricity flowing through the battery you just made with the saliva in your mouth acting as the electrolyte, and the metal acting as an anode or cathode.
If a person has any gold amalgam tooth backings, putting any dissimilar metal in the mouth is very uncomfortable :)
@@ThePhysicalReaction That's why you should never chew tinfoil.
I'm in my sixties, I was never taught that deoxygenated blood was blue but the vein colour was pigmentation and light diffraction.
It was usually parents that said eating carrots was good for eyesight to get kids to eat carrots.
Pain and temperature are part of the sense of 'touch' and are not additional senses as such.
Proprioception needs to be correctly categorized into exteroception, interoception and true proprioception. That which you describe is exteroception... the sense of balance is a proprioceptive property. To go into these concepts at pre-secondary education may be asking a bit much...
Hänig, not Hahnig or Hannig.
We were never told to put a hat on just a coat...(OK, this theory came up in the 70s... not in time to reach my childhood)
I feel like I've seen this before. Maybe Simon did a similar segment elsewhere, or some other commentator, or maybe I just picked up this info along the way of life.
I had deja vu for this episode also.
He definitely has done most of the things in the videos before on other videos and even this exact premise before.
Simon had a video about scientific principles being portrait "to easy" where he mentioned the tongue story at least. But since 80% of the TH-cam traffic goes back to our lord and saviour it should be quite often that stuff comes up double
I love it when Simon blithers. "Laughter is the best medicine," and Simon is clearly obsessed with public health.
My god, this is exactly what pissed me off beyond belief, why I was taught things one year in science, then the next year, to be told that was wrong, to be told what was actually reality, then the next year..."no this is how it is" I was like "WHY THE BLOODY HELL NOT TEACH ME THE KNOWN PHYSICS AND CHEMISTRY IN THE FIRST PLACE?????"
The carrot thing I do know was a disguise when radar was invented....
Exactly. I can distinctly remember being quite upset about being taught election 'orbits' as how things were and then clouds later. Very distressing. I doubt that it even marginally disturbed most of my cohort though.
so you would want to teach 5th graders advanced quantum field theory and general relativity?
You can always escalate the complexity of such a topic up and up and up more, you have to start somewhere
@dangernoodle235 no I'm not saying that... but you definitely know that those who design the curriculum are failed teachers, it's better to lead up to something, rather than say "these are election patterns" then clouds, then basically be relearning, in no way was I suggesting Quantum Theory should be taught to 8 year olds... I'll see what happens in a few years when my kids get there...but certainly in my education it started to get a bit annoying when you could teach kids things that are relevant, and if they have a higher proficiency in certain areas, then adjust for that. But I just feel like I spent a lot of time in the sc ientific areas, that were wasted. Not that I ever studied, but it was really annoying to spend time on one thing, then next year "no, this is how it actually works, then the same over and over again" I understand if it's new understanding happening. But it's a waste of time... in my opinion I'm not a teacher, but I have the feeling that those that devise curriculums, are those that became teachers and couldn't teach. And I would have happily learned Quantum Theory as early as possible. Unfortunately my physics teacher was not what you would call a great teacher. I have always been more into biology and chemistry, and mathematics when needing to adjust imperial to metric, grains to grams. But since children I got into learning about Quantum Physics, because it seems on average from a 4 or 5 year old the 7th "Why?" Means you're at the Quantum level...😆
@happyzahn8031 haha, it just annoyed me most because I can't study. I was later when I was about 33 diagnosed with innatentive ADHD. So yeah, most people in my class didn't care...but I did. Because I couldn't be bothered/never studied.
I did get high enough grades in the end to go into medicine...but it just frustrated me that they couldn't just teach me something different, or whatever it is straight up. Because by the 4th year of that happening it was starting to be mildly irritating...but I'm sure there's things that hace changed now. I mean since I left Pharmacy I can't believe the insane policies and changes in scheduling and the supposedly safest medication has vanished... in much faster time than ever used to happen.
When we speak of senses, we're talking about our perception of the outside world beyond our own body, in other words,external senses. Sense of pain, proprioception, time, and balance are internal senses. Temperature is part of touch. Seeing light and seeing color are obviously part of sight. It doesn't even make sense to separate them from sight. Why would you do that? That would be like calling rough and smooth as separate from touch. Likewise, internal perception is not part of the external senses. You gave no information whatsoever to alter the 5 external senses.
Uh. What? "blue wavelengths are more easily absorbed by the skin and blood" We don't see absorption, we see reflection.
I think he means that since blue's absorbed more easily by everything that isn't a vein, it's really the main color reflected by veins which is why they appear blue to our eyes. I agree it could have been worded better, though.
The skin is not a mirror. Wavelengths are absorbed to a degree (as with anything around that you perceive colored). Red apple reflect more of the red spectrum, but of course not 100%
3:31 That’s not what he said. He said that red wavelengths are absorbed more by the skin, and the blue wavelengths penetrate the skin. The light that is able to go through the skin is no longer white light, as some of the wavelengths have been absorbed. When it hits the flesh-colored vein, the vein looks bluer than it would in white light.
The colours absorbed have just as much influence on what we see as the colours reflected
As far as heat loss through the head and wet hair making one sick, I would propose it’s the rapid change of temperature that causes issues. I remember getting sick one summer because I constantly had to go from hot, humid outside to cold, dry inside multiple times in a day. The constant environmental change made me susceptible to getting sick. It’s why you layer protective clothing for the cold so that you can add/remove layers as needed to remain at a comfortable temperature.
2:58 Simon has done so many of these videos, he seems to have developed multiple brains😄
I thought I was the only one who heard that! 😛
I think that might just be a British-ism... like how they refer to math as 'maths'
@@The_Real_Kyrros "Maths" is because the British are aware this is a contraction of "mathematics".
Their mistake is in not calling it "math's" with the apostrophe signalling the removed letters.
"Do the mathematic" is not right, so "do the math" is equally not right. But it has become a commonly accepted convention despite that.
The use of "maths" without the apostrophe is an equally accepted convention in the UK.
@@The_Real_Kyrros He meant to say "through your veins" and said "brains" instead.
@@bythelee Thank you for reminding me of the things I already knew 😜
@6:10 - two weeks late, but what the heck.... I'm surprised you didn't mention the boost to the "carrots give you good eyesight" myth provided by the British Ministry of Information during WWII. In order to keep from disclosing the existence of the advanced radar systems that let the RAF shoot down German Bombers at night during the Battle of Britain, they started talking about the excellent night vision of RAF pilots, due to all the carrots they were eating. I can't find a citation, but I recall hearing that this misinformation campaign wasn't declassified until the late 1970's. If my memory is accurate, that means that wartime propaganda designed to keep Germany from developing its own radar technology influenced my own elementary school curriculum.
Simon: "Your veins only appear blue. This is just a by-product of how the white light interacts with the pigments in your skin."
Isn't the colour of EVERYTHING just a by-product of how white light interacts with it?
no, colors are the lengths of light waves, but the pigment interacting with skin is like a collaboration of these two
@@avrillavignefanclub1927
You've just rephrased what I wrote, but you did it in a very confusing manner.
@castleanthrax1833 How do you think a laser works?
What color light do they emit?
Where in a laser diode is the "white light" and what is it interacting with?
@@xjunkxyrdxdog89
What has that got to do with what I said?
@@castleanthrax1833 "Isn't the colour of EVERYTHING just a by-product of how white light interacts with it?"
Lasers are included in "everything".
Now do you intend on answering any of my questions or are you just going to deflect?
My high school chemistry teacher taught us this. Is your water green on the outside hose before it leaves the tap? Same thing as blood
The idea that you'll catch a cold if you go outside in cold weather with wet hair is tricky. Obviously, simply entering a cold environment with wet hair won't make you ill. However, putting yourself in a situation where your body has to expend a greater portion of your energy to stay warm does have a negative impact on your immune system. Couple lowered immune system efficacy with spending more time in enclosed spaces with other humans, and you have the perfect combination of factors to catch an illness like a cold. So, sure, going outside in the winter with wet hair won't give you a cold...but it can certainly make it much easier for you to catch a cold.
This one is tricky, since while you cannot catch a cold by being exposed to cold (common cold is caused by viruses), there is a seed of truth in that "myth". When our body extremities are exposed to cold air for a certain period of time, your body will start limiting blood blow to the extremities, which also includes the nose and the sinuses. Since a cold nose is a dry nose, the cold virus particles can no longer be retained by the mucus and may reach all the way to the inside of the nasal cavity and up until the lungs, causing respiratory infections. This is why people with diabetes and compromised immune system get fungal infections so easily, the nose capillaries are atrophied, meaning less blood flow, less immune cells and lower tissue temperature, allowing fungus to grow.
_"Your veins are not blue, it's an optical illusion"_
It's not an optical illusion, you seem to be conflating way light works (in particular absorption) with some unseen 'true' colour . . . nope, if light stimulates the blue cones in your eye, the light is - definitionally - blue.
Although not exactly science related, it always amazes me that schools still teach that Christopher Columbus was the first European to reach the Americas when there is indisputable proof that the Vikings at least reached Newfoundland 500 years before Columbus.
I am a high school history teacher. Even in Texas, we haven't taught the Columbus myth for at least 20 years. We do talk about the 'Columbian Exchange' that got set up in his wake, but not that he was the first European.
That's not what was taught to me 30 years ago.
I used to drive forklifts in a -10F degree freezer for 12 hours a day. One day I forgot my thermal knit hat, yea it was definitely more of a 10% difference of how cold I was. Never forgot my hat again.
What is the name of the sense that allows one to see Bruce Willis?
Very underrated comment. GG my learn-ed friend.
You mean in the film The Thirty-Fourth Sense?
Clairvoyance....I imagine it'd be difficult to see or meet with Mr Willis these days.
I heard that the story about carrots improving eyesight was broadcast during 2nd World War. British planes had systems (onboard radar?) which enabled them to find targets more accurately. The story about carrots was one of the many subterfuges MI5 instigated to mask the otherwise exceptional accuracy of our bombing raids and avoid the Germans devising countermeasures. I don't know if this is true or if it had the desired effect..
How many times is Simon gonna make basically the same video? I swear he's already made this or similar at least 3 times in recent months
Until it stops getting views.... does nobody pay attention when he speaks? "We are creatively bankrupt and we'll make the same videos over and over if people keep watching".
Are you sure you are not watching the same video over and over?
I didn't even know you could pronounce "Zur Psychophysik des Geschmacksinnes" (German) 10:14 like that. He makes it sound like a totally different language altogether. Impressive. :)
Right? He's normally fairly good at pronouncing German and it's still comprehensible when I'm only listening. I did not expect him to struggle with Geschmacksinnes nearly as much as he did. Half convinced he did that on purpose xD
Veins look blue through the skin because more blue wavelenghs are reflected. This is NOT an illusion. When blue light reaches your eye, we call it "blue", because it's blue. It's not difficult.
We're told at school that rainbows are caused by sunlight being refracted through rain drops, but this is one of those over simplified 'lies' Simon was talking about. It begs the question of why we see one great big stationary rainbow (ok, sometimes two) instead of a million tiny ones that follow a rain drop down to the ground? The REAL answer is far more complex than a 7 year old is prepared for, so we go with the simple version.
Rainbows are caused by the colours within sunlight being refracted through rain drops. We see one big rainbow because the rainfall acts like one curtain of water formed from millions (actually more like billions) of rain drops. A single raindrop does not produce a rainbow, it splits an incident ray into colours and if youi could see that from several miles away it wouldn't be an image like a bow. The reason the rainbow does not fall to the ground with the raindrops is that its position depends on the sun which obviously is not falling to the ground (or at least not in the timescale of the minutes during which a rainbow is visible), and on your position and you are probably not falling. To understand the rainbow image requires a geeometrical diagram showing the position of the sun, the observer and the falling rain, combined with ray-tracing of the incident and refracted rays of liight in their different colours. It's very complex and cannot easily be imagined or visualised but the physicists and science teachers have got this one right.
@@johnparry9313 I know how it works. My point was that we don't go into complex explanations for 7 year olds. We give them the simplified 'lie'.
That's not what "begs the question" means.
I was taught the first one in middle school. My teacher also said that arterial blood was red because it had more oxygen, but other veins were blue. I've had so many people tell me that there's no way a teacher taught me that and that I'm clearly remembering wrong. I'm super glad to see that I wasn't the only one who was taught this.
They're less taught and more just talk amongst peers that gets perpetuated down the grades forever lol
What do you mean? I quite literally learned that we have 5 senses and that the taste buds on your tongue have different zones from books in the late 80's and early 90's. They were most definitely things that were taught
@@captainspaulding5963 i was born in 2000 so maybe thats why, (im also from europe) but i wasnt taught most of these things, teachers even was explaining at school why these topics are incorreact
@avrillavignefanclub1927 yep, which is why I included the phrase "things that WERE taught". Gotta look for clues when reading in order to gather the whole story before commenting.
@@captainspaulding5963 That's the only one he covered in the list that I remember being taught to us in school (80s/90s), the rest were just myths passed along socially or perpetuated in media.
Edit: I do remember being told we lose heat through our head, but this was from recess staff warning us to wear beanies before going outside. It wasn't like, part of the class or anything.
@@captainspaulding5963 oh shut up you sanctimonious muppet
I am self-taught and I always hated how school taught that there were 5 senses. I already knew from personal experience over a dozen, so I was like "wtf are they talking about?". It's ridiculous.
Just as a few examples: sense of direction (whether you're tilted/up/down etc.), feeling static electricity fields around you, feeling heat (it's not touch), feeling changes in air pressure (related to touch, but it's not touch), sensing when someone is watching you (has been scientifically demonstrated, but not explained how it happens), feeling the movement of a gyroscope, etc.
Swimming cramps after you eat.
To be more accurate: radioactive carrot seeds make carrots that give you super eye sight. (reference) Gilligans Island
the first time a teacher explained evolution to me she said it wrong!! she implied that traits gained during life will be passed down (like if i lift weights my kids will be swole).
years later when properly learning about evolution, we also covered how Darwin and subsequent genetic understanding literally proved those kinds of theories wrong and it made me retrospectively angry at that first teacher
What you're describing is Lamarckian evolution... Did you perhaps go to school in the Soviet Union? There was a whole push of Lamarckian evolution for ideological reasons, people like Alexander Lysenko were involved... So maybe your teacher was a leftover of that?
@@RoonMian I wish!! it was actually when learning about Lamarck that i had that "flashback" and was like... wtf.?? but no, neither the teacher nor i were from the ussr or the early 1800s. she just felt the need to explain evolution to her class of children but clearly had no idea what she was talking about and we were like 8 so no one could call her on it 😂 it wasn't even a science class
@@CoughitsKath Very weird.
You will have fun telling wine snobs about the tongue, they actually shape wine glasses so when drank it targets parts of the tongue based on the flavor profile of the wine. LOL
3:18 why the hell are they draining horseshoe crabs!!??
medical research
Mr Spock required a transfusion.
They have copper (blue) blood.
The blood is used to test IV medications for bacteria. I know there's a Today I Found Out video on that one that goes into detail about how it is used.
@@Benson_aka_devils_advocate_88 thank you. That's kinda what I was thinking
you people make greatest videos.keep the good work.cheers,good luck,wish you the best
The "lose body heat from you head" one is incredibly popular in Sweden. The number I had always heard was more like 10-20% though which seems pretty much correct.
That's the number I knew too, from education in Southern Africa where it's not that cold. Seems like this "80%" myth is indeed geographical (Anglo-American, perhaps?)
Middle school science teacher - a lot of these are not taught in schools, at least nowadays. But almost all of them are taught in the household
What about the actual size of Greenland and Antarctica. Flat maps make both look gigantic when they're not nearly that big
some flat maps do that because they have to warp something in order to get a round surface to be flat. they make the land masses closer to the poles bigger. but there's also a version that just makes everything looks super long.
it is just impossible to present a globe on a flat regtagle map without streching some places, it causes incorrect size of continents
Teach told us about map distortion first time she showed the world map
@@danicorvin good I'm happy to hear that. Because when I was in primary school they did not explain that. At least it sounds like it's getting better then 🤷
@@avrillavignefanclub1927 It is possible to make a map that doesn't have incorrect sizes. It will just have incorrect shapes instead.
For the heat loss one I think it mostly comes from misinterpretations. I was taught in school (though I don’t have scientific data to back this) that when wearing appropriate winter gear, 80% of the remaining heat loss was through your head. Keep in mind a lot of that heat loss comes from the air expelled from your lungs.
What percent goes out of the top of your head, where a hat could help, would obviously be less and dependent on factors like having hair.
I got a good one. We're taught that biological sex is a strict dichotomy with very few examples of folks who break it. In reality, it's a pretty loose bimodal distribution and it's extremely common for folks to display primary or secondary sex traits of the "opposite gender". Gynecomastia in men is wayyy more common than most cis men want to believe, so is facial/belly hair on cis women.
Primary or secondary sex traits don't determine sex. No matter how many atypical sex traits are expressed, actual sex remains unaffected. It's all about gametes. You either make the big ones or the small ones. And yes, females have hair on their bodies as they are in fact mammals. Although they typically don't have as much as males, it doesn't mean they aren't female. Total misogyny. Turns out you didn't have a good one.
@@tinymutantsquid 😂 Nothing you said argues against my statement, genius lmfao And you're wrong about sex determination.
Gametes don't determine sex either, it's possible for a body to produce both or neither. Chromosomes also don't determine sex, as there are people with XY's who have given birth and males have been born without a Y.
@@tinymutantsquid Sex is determined by the individual, not by a grab bag of traits and/or genetic expression.
@@SirSpenace Cool emoji. No need to argue against points I didn't make, it's super boring. Chromosomes don't matter. Humans only produce 1 set of functional gametes. An individual’s sex is defined by the type of gamete their primary reproductive organs are organized to produce. Pointing out super rare intersex conditions are not only exceptions proving the rule, in those cases one set doesn't function, leading us back to my simple and straight forward assertion. As far as your grab bag comment, I agree, that's what I said, although I have no idea why you decided to argue against your first position. I guess you're confused, hence emoji instead of substance. Which makes your 'sex is determined by individual' comment make sense... you think you can just believe hard enough, and with enough emojis, you can change reality.
@@tinymutantsquid @tinymutantsquid Ohhhh there it is. The transphobia. You "there are only 2 sexes, cope" types always circle back to it. Congratulations on taking the most words I've ever seen to do it, I'm sure it makes you very proud of yourself 🤩 Here's a trophy🏆
I'm not arguing against myself. And using an emoji doesn't discount anything I've said, the fact that you're resorting to such a logical fallacy is very telling 😂This is the internet, if you can't handle emojis maybe you should stick to books.
My comment about chromosomes was only because your gamete hypothesis is a hair's breadth away from "XX=Female//XY=Male" stereotype. And it's cute that you like to pretend that variations in things such as gamete production and chromosome expression don't come attached to very real humans, but they do. You can't poopoo away their experiences and feelings just because you want to be an absolutist about sex determination. There are quite literally millions of examples alive today, it doesn't matter how rare or exceptional it is. Those are still people who deserve to reserve the right to determine their own sex. Unless of course you're advocating for "corrective" surgery on infants. Which, by the sounds of your disgust towards the sexual deviance, would seem to be a logical assumption.
I always interpreted the “majority of heat lost through the head” thing as comparing winter clothes without hat to winter clothes with hat - not to naked with hat (which was so self-evidently wrong that it didn’t bear even cursory consideration as a possibility).
The one I *do* believe is that if you’re riding a motorcycle and your hands get cold, better gloves will do you a lot less good than your ordinary (motorcycling) gloves + a scarf or balaclava. People leave their neck exposed because “it’s only my hands that feel cold!” not realising that their body is compensating to keep their neck feeling OK by not warming their hands inside their gloves.
(At least, my own experience with motorcycling is that a scarf is better than upgraded gloves. Obviously not comparing to no gloves at all, because, again, that would be silly.)
Slight slop of tingue at 3:39 . It's not that the blue wavelengths are absorbed. It's the fact that they are reflected that gives the appearance of something being blue.
kerricting peeples speach shul b dun korectli.... " slight slip of the TINGUE?"
Also misspelled "slip"
@@craigfurlong7981Correcting an incorrect fact differs from making written errors.
@castleanthrax1833 still, if you are going to be pedantic, you should make sure you are correct, in all aspects of your response.
@@captainspaulding5963
Getting facts correct is not an example of pedantry... especially when the video itself is about getting facts correct.
The Bohr model of the atom was known to be incorrect since at least 1913. Max Plank had the basis of Quantum mechanics published back in Dec 1900, and it was mostly fleshed out by Dirac, Heisenberg and Schrödinger by 1930. Yet here we are over 90 years later, and they still teach the Bohr model in high school physics and chemistry, with no word of it being a simplification.
Either you're republishing videos, or you're recycling facts from different videos. Either way, I'm not a fan of that. I distinctly remember you talking about the five senses factoid before.
I think the last time he brought that up was in a Today I Found Out video, so I think it's a case of different writers from different channels overlapping.
@@Sammael251 Thank you, thought i'd seen this recently. You'd think Simon would remember!
@van_trippin5260 he's explained MULTIPLE times that he retains next to no knowledge from the scripts he's reading. You shouldn't expect him to remember anything
@@captainspaulding5963 then he can EXPECT me to click off a video if he repeats himself.
@@Sammael251 I don't think so. I'm fairly certain I saw the thing about the carrots and the blue blood too.
Dear Simon!
3:00 "Brains"!!!
love(agape)
Steve Holliday
Chemistry: Nah that Bohr model was all BS, actually, the orbital theory was all BS, actually, atoms have an infinite size but only probabilistically exist in this tiny area… why couldn’t we just skip all the BS, it’s not like anyone understands that either
The notion of a pain receptor is the exact oversimplification you are talking about. No such thing as a pain receptor exists, we have nocicpetors that detect potentially noxious stimuli in various forms and if their input makes it past the spinal cord and up to the brain then they have the potential to generate a painful experience.
However even this short statement is a gross oversimplification of the wonderful world of pain science. I doubt you have a lot of spare time to explore such a fun topic with all the great content you produce but if you get the chance or anyone else in the comments wants to go down the rabbit hole of pain science I highly recommend it.
4:18 -- Actually, eating carrots improves your eyesight because "Have you ever seen a rabbit with glasses?" 😆
Wait can you touch on what color are the actual veins themselves? Are they transparent allowing red blood to be visible? Are they red for another unexplained reason?
I'd also love more information about why red veins look blue when seen through skin.
9:15 I can’t believe how many times I have had to argue this. It’s baffling that people still believe it as if they can’t experience taste across their whole tongue every time they eat
Thank you, very useful information, learning never ends.
I clearly remember reading in a school textbook that you could verify the taste map at work by touching salt with the tip of your tongue and you wouldn't feel the saltiness. I tried it and, well, maybe it was a placebo saltiness? Science can't be wrong can it?
Hi big fan here! I think my hearing is getting worse. Despite English being my primary language, I'm having a hard time understanding half of what you're saying. I'm thinking it's too fast and your sentences go up and down in amplitude so much that I only catch a certain amount. I use close caption to watch your show now. There are other youtubers that I'm increasingly having problems hearing but then there are others whose sound engineering seems to be easier for me to hear. For example, Attenbourough's speech patterns are still very clear. I'm sure many with younger ears will disagree with me but I implore you to consider those of us whose hearing isn't quite perfect and is getting worse. Maybe do an episode on voice broadcast engineering or something along that line? Thanks for listening and keep up the great work!
"There is no bad weather, just bad clothing."
An optical-filtering effect is not concretely just an illusion. A sunset appearing red due to filtering of shorter/blue wavelengths serves as an example of the same physics at work. In each case, the wavelengths arriving to the eye are not incorrectly perceived or interpreted.
Check out any textbook diagram of the CVS - they (almost) all show the veins as blue & the arteries as red. Still wondering where the misconception comes from?
This is still used for diagrams because 1) it is visually easier to understand. 2) med students already know it's not really blue.
Nerd fact: Did you know that a "self lapping" electro-pneumatic brake for Tube trains developed in the 1930s and still in use on some stocks is directly based on the vestibular system of the inner ear?
Also on the topic of sensory perceptions... what is the sense that enables me to touch the tip of my nose with a finger while my eyes are closed? How do I know where my nose and finger are?