We just need the next visionary to be born. Seems like over a certain period of time a person is born to solve a huge problem that pushes the human race forward. We had those who proved the world is round, those who imagined the laws of the universe, the crazy old man who thought of relativity, and so one. It’s like certain people are born to solve a problem so the next person can move forward. Not saying it’s just part of the plan, but it’s interesting to think about.
That 'crazy old man' and his relativity nonsense sent mankind knowledge of the universe back centuries. Him and his followers are the epitome of Collective Stupidity. They are lower than the flat Earthers on the evolutionary scale. Look at how many idiotic Twin Paradox videos are on TH-cam. Not a single one understands that there is no time-dilation occurring. Multiple experiments and observations have proven such. And yet, people still believe in it because there is an intrinsic need for people to worship false gods. To believe in the impossible. That one can achieve immortality. And that's what Einstein did. Founded the Church of Relativity to counteract the real scientist who where demystifying the universe. Taking away their beliefs in an eternal life. Einstein gave it all back to them and more. And all they had to do was build a spaceship and travel throughout the galaxy and find a nice black hole - intense gravity, to park their little spaceship and live for eternity. Who really are the delusional ones here? Flat Earthers or Einstein cultist?
There won't be any visionaries any more. Cost of reaserch, equipment and staff is just tremendous today that discoveries are treated as investment by only a few richest companies in the world.. We just picked up low hanging apples so far, now its only gonna get harder and harder.
That's crazy it comes back faster then it went. It's just like being on a long car ride it always seems to take longer going but on the way back it seems almost 2x faster. So I guess if you want a long life always move forward don't waste your time trying to go back!
You would still die at an average age of 73 because nothing would change for you. Just relative to everything thing else. Nothing would affect your biology moving forward in time.
The Grandfather Paradox might have a solution...if one theory is correct,when you go back in time you go into another dimension,so you kill that dimension's grandfather not YOUR grandfather,thus no paradox.
If you did it you wouldn't exist to go back, so if you are able to go back you either choose not to do it, or circumstances prevent you from doing so. you're helping to create a past that already happened, so nothing would be different
I'm afraid that creates another paradox as the act of traveling through time would create a new alternate universe for which an amount of energy is required equal to that of the big gang or (in other words), all the energy that exists within our universe which is quite a lot. Another possibility of course is that the alternate universe is already there but that means that you are no longer traveling through time but jumping between alternate universes with no accurate way to determine in which universe you end up which makes the chances of you finding yourself in a universe in which humanity evolved to be... close enough to zero to call it zero.
Nope! You create with your arrival an instantly new timeline. This would change this world in a second. So you would not kill your Gramps, but the cramps of your parallel universe self...@@keithmichael112
@@rayraybonne8469 I don't know how long this has been an option... but I recently learned that if you hover over the title of a thumbnail of a video on the main TH-cam page, three dots appear to the right. Click on that and a menu appears. On this menu is the option "Don't recommend this channel." Select that and never be bothered with this channel appearing there ever again.
There is a way to avoid the “mirror bounce” method for measuring the speed of Light. It has been shown that, at a certain distance from a black hole, light entering a special zone on one side of a black hole will travel in a curved path (around the backside of a black hole) and will re-emerge on the other side of a black hole.
This comment is underrated. So many videos saying measuring the one way direction of light is impossible. Mirror bounce always concerned me because how do you measure the time it takes light to actually bounce off the mirror?
@@jopasc8998 I was under the impression that the silver atoms absorbed the light then retransmitted a photon back out. Otherwise I have no clue how light changes direction like that. Which would take time. I could be wrong though.
@@jopasc8998 I don't think the link is pasting in mirrors the science of reflection explainthatstuff "How does the mirror reflect light? The silver atoms behind the glass absorb the photons of incoming light energy and become excited. But that makes them unstable, so they try to become stable again by getting rid of the extra energy-and they do that by giving off some more photons. (" Nothing is instantaneous, as nothing happens faster than light which we are trying to measure.
I think Avengers: Endgame did a good explanation of backwards time travel, where your past is your past, and if you travel back there, any changes made become an alternate, separate timeline, and when you return to your timeline, nothing has changed (multiverse theory). Other option is traveling back in time and you take a particular action, even though you think you're trying to change something, it ends up you were always meant to take that action (think first few seasons of Red Vs Blue, Harry Potter: ATPOA, or Interstellar) but that begs the question, as mentioned in this video, of where did the event start as it's seemingly stuck in an infinite loop. Time travel, although interesting, is probably a good way to fry one's brain permanently trying to figure out the how, why, and and all its nuances. Also consider, as mentioned in the video, we're on Earth moving. So how much slower is our time dilation compared to someone who is truly still in space, as we're roughly moving at 2.1 million KM per hour?
dont think you should base your arguments on movies. you are asking mulitiverse vs grandfather paradox. also space itself is *moving*. stationary is an abstract concept
@@jopasc8998 it's more about relaying the different theories in a way others can understand, especially if they've seen the movie/show. As far as space moving, I mean truly dead in space, the epicenter/focus.
we're chasing a star that's hurling around a galaxy thats falling faster into another galaxy in a supercluster branch of ~10,000 galaxies that are all speeding up inbto The Great Attractor. We can never be still. 250mps dust would erode us alarmingly slowly but effectively :)
Numbers, language and time: these are examples of mental constructs that help us to understand reality and each other. Much as we like to think that reality will bend itself around our mental constructs, it remains unyielding.
I love the thumbnail. The astronaut has a young look and then 10 minutes later he's an old man with a neatly trimmed mustache and beard. How did he get neatly trimmed facial hair just like that? LOL
“Time is a flat circle.” -True Detective, Season 1. Seriously, though, what boggles my mind is if it really is true that time is another dimension like space. So imagine every spacetime event with a “location” pin somewhere out there. So even if it hadn’t happened yet, it’s out there just like a tree in a distant forest. Crazy.
Damn, this video makes my head spin. Too much mind-blowing information, but it was damn interesting. Talking about time travel is a really damn interesting thing that you can listen to endlessly. And I love that I can do it for you. 🤗
With the theoretical device that he mentions, where flying a ship around a long tube that has essentially the density of a black hole in it, wouldn’t that only work up to the point of it’s own creation, because once you reach that point in time, you will no longer have the device to go around
0:25: 🌌 Understanding the speed of light is crucial to unlocking the enigmatic nature of time. 4:15: ⏳ Time dilation occurs as objects approach the speed of light, causing changes in perception of time, length, and motion. 7:58: ⏰ The concept of time travel and its potential methods are explored, including the Tipler cylinder and the block universe theory. 11:30: 🕰 The paradoxes and possibilities of time travel. 14:58: 🌌 The many worlds interpretation suggests that the universe exists in a superposition of multiple states, and each event creates a new parallel universe. Recap by Tammy AI
The person who put this together cannot tell the difference between casualty and causality. The only thing that I consider awesome about this video is the sheer lack of credibility.
We have known for more than a century that space and time are inseparably linked. While this is a fun gedankenexperiment, round trip time might be the only way to properly define distance, so it's not that surprising that one-way time is undefined.
Nice imagination, altering time, a concept using an abstract concept (numbers) to effect 'thing's, which are tangible and real, and bending space, which is an absence of matter and comprised of 'nothing'. So give me a box full of time that I can uses whenever I want and a large jar of nothing that I can bend when I'm stressed.
Man used to judge time with day and night...then we decided to divide the day and night into smaller units of hours, minutes, seconds... The universe didn't create this measurement...we did. We measure things. Time measures the non tangible very accurately. A yard stick measures the tangible very accurately. Your eyesight doesn't do either of these things very accurately at all Which did we create?
Or traveling to the past could be like watching old home movies, You may be able to observe the past but may not be able to inter-react to it in any way shape or form. So no paradoxes would be possible.
We can do this right now. Look in your telescope and observe the past of the universe. But yeah, I kinda get what your saying. Sorta like "Scrooge" you can go back, but its like a movie all around you. Guess if you had no mass (which solves some issues) this would be kind of possible.
It may also simply be that it's impossible to change a past that has a future in which you came from. Meaning you were already part of that past. Using the old "stopping Hitler" experiment; imagine going back to stop Hitler and your attempt ends up helping. 😅
@@CynHicksI believe some events are “inevitable” and to interfere would cancel our own existence. Imagine how different world history would be if say: You go back in time, Christopher Columbus arrives and you sabotage all of the ships and eliminate his entire crew. Everything in America changes, including the name. Countless lives saved, countless lives never born. So many possibilities in different historical events.
Grandfather paradox is only a paradox if you think in linear time where its always cause, then effect. In non linear time, this need not hold. It's not something we normally encounter but that doesn't make it invalid, just confusing. Of course you couldn't go back in time in the first place as going back just one nano second would cause there to be two of you in the same space at the same time violating both the Pauli exclusion principle and the conservation of matter energy.
Not so… think of what we see as reality like a motion picture each frame is in itself singular and unique like a picture book… if you went back in time a removed you grandfather would be the same as removing a frame or a page out of the picture book the state it has collapsed into is not changed only a previous page removed with the rest of the book unaffected in that manner but in a different manner… also what we call “Space” can support 4 dimensionally spaced objects
The two way light/mirror measurement is perfectly valid. The flaw lies in assuming measurement one way could be different from another. But since the earth, sun, and galaxy are constantly moving, rotating and revolving, directions are always changing. If light-speed depended on direction, it would constantly vary through the motions of the earth, sun, and galaxy. But we don’t see even a hint of that. If so, light from flowers to the left would appear to be a different color than the same type of flower to the right. But we don’t see that either. This may be and interesting thought exercise, but it’s totally flawed in reality.
Paradoxes are only an issue in linear models of time. It is far more probable that there Are three intertwined forms of time That exist in nature. In one of the forms, each particle wave is on its own partly separate Timeline. Another form Has 3 dimensions that match Each point in space. And the third form has an Infinite number of dimensions.
Going back in time violates energy conservation and thus is not possible. Anything that goes back in time and meets itself in the past means duplicating matter, the atoms going back in time are the same atoms that will be met, this means creating matter out of nothing. Traveling back in time not possible.
At this time, I'm a hardcore "no" on the whole time travel thing. But I still enjoy watching films that involve time travel. So long as I ignore the 'how' and focus on the storyline, I'm good. I never studied quantum mechanics or string theory or anything advanced. Straight forward here and now physics involving potential and kinetic energies is my thing. I see time as a man-made construct, a method for recording instances in history in order of happening. For an instance to happen, all a certain type of molecules have to be in a certain place at a certain moment. The universe is how it is at that moment. The snapshot of that moment is labelled as happening at a moment 'in time". That's not to say that that same instance could never happen again (the monkey type-writing a Shakespearean piece likely has the same level of probability of occurring). But that's it; all the atoms and molecules are where they're at at that moment in time. So, how can it be possible to rewind time? I can get my head around travelling faster than light from A to B to see what is happening at B a little before people at A see it, but that's it for me. I've never been able to imagine a ginormous, cosmic camera that records everything that ever happened everywhere in which we can rewind the film to a historical moment, ie time-travel.
Time is motion. If earth spins once it's a day. If earth travels around the sun, it's a year. If a photon travels 300 million meters, it's a second. Now if you travel 2 meters per second and I travel 1, after 1 second your distance is twice mine but our time is equal. If I travel an additional second, our distances are equal but my time is doubled. Fundamentally it a relationship between speed and distance. Time=distance ÷ speed
In the case that past, present and future exist all at the same time, it is not that you don’t have free will but instead it is that you already used your free will and made you decision and can not change what you have already decided and done! That’s exactly how I feel all the time, like I know that I have already decided just don’t know the decision yet !😊
if you want to not be affected by paradoxes in sci fi just say that you quantum entangled yourself to an indestructable\unaffected object, like a black hole and as long that exists you exist in any timeline, it's like being watched by a 3rd person camera in a video game, as long as the camera films you, you exist whatever you do to your grandparents.
I entangled myself with the eldritch god of hunger, and cats. I don't exist in any timeline or universe, except the one where I do, but there is always one where I do.
If you travel through space , the faster you go the less time you will have to react, steer. Doesn't that mean that traveling reqires time, mostly as control. If you have more time you have better control, and you have more time if you move slower.
a bit over 100 years ago laws of physics didn't allow objects heavier than air to fly and 500 years ago every "scientist" believed that Earth is flat and only one who proved that it isn't was burnt at the stake.
Our understanding of physics is primitive as we have only been understanding the rules for 100-200 years so cant go back in time BUT what will we understand in 10,000 years?
If you go back in time, your past becomes your future. It is counterintuitive, but think of it as a sort of insertion of yourself into the past and the timeline. You exist, go back, insert yourself and still exist. You need to understand time more in a space-time correlation. For instant if you have an apple in the room next to you and you don't see it, the apple is still there (most likely at least. It is not, if we live in a simulation.) Think of time as the two rooms and of the apple as yourself. If you take the apple from one room to the other, the apple still exists. The apple exists unconditionally to time, because he once started to exist and wasn't deleted. Both rooms exist simultaneously, it doesn't matter what you change in them. I think i explained it poorly, but that is my theory.
The science fiction concept of time travel predicates on the notion that the traveler will retain his future properties as he goes into the past, which will mean he *could* affect changes in the past. Picture, on the other hand, that with past travel, you revert to your past state, and even past position. Not as exciting, but would certainly prevent any paradoxes.
For clarity, if time is as much a dimension as space, then it stands to reason that the position of everything is a snapshot of that location in time. So unless an entity were to be capable of operating outside of time, it would need to move within those snapshots. This would remove any potential for time paradoxes
Time travel paradoxes always make me roll my eyes. If you could theoretically travel to any point in time, the act of travelling, as well as your mere presence at that point, would cause ripple effects that could not be predicted. The Multiverse is about Balance. Imbalances are ALWAYS corrected.
Ok you just made a bunch of statements you can't possibly back up. How do you know it needs balance? How do you know imbalances are always corrected? Explain.
"Time travel paradoxes always make me roll my eyes." They should. It is and will always be a physical impossibility... because of one thing alone. Entropy. A given snapshot of "time" could be defined as x. In order to travel "back" on the "time-line" one measurement of any size, a year, a day... we would redefine x as x-1. This means entropy has _decreased_ relative to our origin, yet entropy increases even when the hard-math is done for reversals in functions illustrating traveling "backwards", even through the uncertainty of quantum mechanics. In other words, traveling back in time would require us to enter a state of less entropy. If you overlay his illustrations in this video with the concept of a "perpetual engine" , you will have a fairly good notion as to why it is impossible. Conceptually there is no difference at all.
The universe is not causal…it operates on retro-causal principals. That’s why particles know before hand, what you will do and adjust…and explains why some people can see exact futures and then change them.
time travel could be actully quite simple when your consciousness is creating spacetime, in that case it would create the future looking like your past while you travel, but its not your real parents that you meet since you are not back to the same spacetime coordinates thus anything you do like killing your parents or even the copy of your younger self has no consquences on you
This only assumes that the time line is linear in it's movement. If it is, then it's a 'block' universe. If one kills the supposed grandfather and does not disappear, that means you have not only traveled in time, but hopped into a parallel universe. This is a part of the 'many worlds' theory.
Yep it would make another parallel universe that does not change your present. You can go back to the same time in the past and would just keep making these parallel universes. You would see each time you go back it will be a bit different then the next jump in the past. Time is linear you can't change what already happened.
I think the best part would be that the person moving at speed light (like in Star Wars or Star Treks, you might not be able to record it as well on a video camera.
I'm fairly convinced, multiple world is not only a theory, I had several occasions when some of my belongings were traveled between dimensions, disappearing in our dimension, and reappearing some days later on a completely unrelated place. Even my family was puzzled sometimes when like my wedding ring was disappeared, when we were at my mum. We know it was there, because I have showed them to family. That evening the wedding ring was diasppeared while we were in a pub. We looked for it everywhere, but couldn't find it. A few days later when I travelled back home from my parents, it was on my bed. It was the same ring, with the same markings on it. Just travelled through time and space.
Something similar happened to me. I was at a bar when I noticed a ring had slipped off my finger. I looked around the bar and could not find it. I checked my pockets as well hoping it slipped off into my pocket. No luck, and after an hour or so I went to the restroom. After relieving myself and about to wash my hands I heard the sound of metal hitting the floor. I looked down and saw my ring on the bathroom floor. Still scratching my head on that one.
I argued with my teacher while in school that the speed of light couldn't be a constant if time wasn't bendable... while at the same time it couldn't be a constant if time was a variable... I used the rotation of a planet that a star shone upon for reference. on one side the viewer is moving away from the light meaning it's relative speed is reduced, while on the other side the viewer is moving towards it meaning the relative speed was increased. I also argued that the universe was proof that either energy could be created from nothing or cause and effect didn't have to be linear... we tried proving/disproving it by making som calculations with a timetraveler that went back to before the big bang to see what started it and entering a 0D space meaning that space went from nothing to something in pretty much no time since time is a effect of the physcial laws reacting
As far as I understand the issue is that the faster you’re moving, the slower time passes for you. While no human has ever noticeably aged differently, because the effect is small at the speeds we move at, we have used atomic clocks to prove the idea. If you want to read more about it, the experiment was the Hafele-Keating experiment. We took three hyper precise clocks (atomic clocks), and left one “at rest” in the lab, and sent two others flying around the world, one eastward and one westward. In the end all three clocks differed, due to their speeds relative to each other and the rest clock.
@alexadao8852 let me guess… you also don’t believe in vaccines or evolution? Time dilation due to strong gravitational fields is proven. But again I am guessing you think all these people with their PhD’s in Physics are part of some illuminati conspiracy. The earth is not flat and science is real…
@@Frostcatification so in a case like that, what clocks time is the correct time? Even if they experienced time differently, once they come together, the time should be the one from the one that stayed. So the other 2 would have to adjust their times? It would suck to have to do that in my opinion cuz even if I experienced time different, I'd be forced to "fix" my clock once I got back, either losing time or gaining time. Or am I thinking about this wrong? Lol
Time, in this definition doesn't exist. As time is only a measurement, like an inch, it doesn't exist outside of some activities to measure. For us, time is based upon the rotation of the sphere on which we live. We have, over time, found ways to more finitely measure these events, but we are still simply labeling the series of events / observations we make. There is only now. There is the hope of future events (tomorrow / future) and the remembrance of prior events (yesterday / past); but there is no scale to move forward and back upon.
@@Acteaon did your experiences vary a lot each time you did it? I think some substances temporarily turn off certain parts of the brain to reveal what is already around us. There is a lot we can't perceive because our brains developed to allow us to focus on only specific things and let others fade into the background. Unless a scientist has tried any substances, I don't think they can accurately describe perception and experiences of time. They can attempt to explain things with math and science but the experiences are also a piece of the puzzle.
@@coolbreeze5683 each experience was very different yes. Sure our brains are considered to be “mal (functioning/firing)” but it’s that very state that is amazing and eye opening.
I think that time is an illusion because time is only present and witnessed in the context of Thermodynamics and more notably entropy. Even then we witness it as humans in our own reality, it doesn’t mean that it can be witnessed outside of our reality. That is my two cents.
The so-called paradox of twins is probably reversible - similar to distant figures that "appear" smaller to us, but when they get closer they "grow" to their original size.
If we take a moment and realize we can be both the measurer and observationist of ourselves we become participants and thus superposition our lives accordingly. As with Schrodinger's cat some look inward to themselves, others are the cat looking to get out of the box and some don't look to change anything at all. If you were to be confined in the box your the type to keep having yourself build a time machine (determined). If you're the type to look inward to yourself you'd realize the time machine blueprints aren't what defines you (super positioning). If you're the type to just get out of the box and not repeat the same fate than your the many worlds type (double slit experiments randomness)
Time is just a measurement of motion. To say time dilates is about as ignorant as saying that the value of an inch changes just because the ruler/object being measured expands and contracts with changes in temperature.
There are no separate entities in the universe like 'people'. Only the "I AM" or Consciousness exists. (For Eternity). Time is just another word for change. So time dilation is change dilation in the universe, but Consciousness (which contains the universe) never changes.
The paradox where you send a letter back in time to have someome build a time machine obviously couldn't happen because the shit wouldn't be built to send the letter! But if u build a time machine, you can send a letter back in time to ask for materials to make it easier to build
this may be unfitting, but the legacy of kain series (a game treasure) has wonderfully included the self consistency theory in their storyline although with an interesting twist
The grandfather paradox is impossible. Traveling backwards in time is an impossibilty wnd of discussion, the atoms that made up that past point of time have decayed and cannot be reclaimed. You can travel into the future, but only by slowing your own relative time in comparison to others' relative time, but it isnt the future to you, its still YOUR own perceived present. But even if you COULD go back onto time, the atoms that create you are in existence, they cant just "vanish', and now your atoms exist in that past time, so therefore there is no reason why you shouldnt exist in the future. Either way, the genetic material that makes you, you, exists. Whether not yet combined, or already combined.
In my opinion on the subject, time always moves forward, no matter how fast you go. I don't think there ever will be a way to travel backwards in time, but I do believe at some stage in our existence, we will develop methods of travelling forwards in time.
I agree that backwards will never be possible. But forwards...? That's a whole different can. If you don't mind me asking, do you believe that the future is already set (theologians would call this predestination)? It does make deja vu seem a bit more serious, lol.
@@FaceInTheCrowd Ironically, I see Deja-vu as a possible future. Although, when you experience it, you instantly feel like it's something you've done before. So I'll say for now, I don't believe the future is set in stone for sure as I believe our actions have opposite reactions. Everything you do can manifest into something different. For me to say that, it sounds like I was meant to, meaning its set in stone. But I don't know.
@@TheeRyanBrice For the future, I am wholly undecided. Some people believe the future is kind of set. I'm fascinated by myths and legends like the (Greek) Three Fates. The theory is sometimes unsettling to me though; the thought that no matter what I think I'm choosing to do, some being has already decided for me, outcome and all.
grandparent paradox: if you travel back in time and prevent your branch of the family tree to progress to where you were born, a new timeline might be created, or an alternate reality in the multiverse. If that is the case, then there's no longer a paradox.
You have to believe in alternate universes to think that one person can create another alternate universe simply by preventing their existence in one. I don't know where an alternate universe can exist. If somebody did that, there is something in my past I want to change. How can I tell myself I have a second chance?
Someone already built a backwards time travel device that allows for information to be sent back in time. He switched it on and no messages came through. This suggests that there may be a law within physics that prevents backwards time travel. It also implies that time has a linear flow, even if all of time is in existence.
So a guy invented a machine that doesn't do anything so he decided to call it a non-working time machine? I bet it involved a shoebox and some string, because those are the components that would enable the device to work exactly as you have described.
@@derrynh-NE where in there did I state that the guy intentionally built a nonworking device and then called it a nonworking time machine? I can’t remember the scientist who actually built the machine, but he was using concepts thought up by Ronald Mallet, who wants to use ring lasers to travel back in time. It’s not practical to use for a person because the ring laser would have to be the size of a galaxy, but this other scientist built a smaller version to send photons back in time, using Morse code. He theorize that when he turn the machine on, he should be receiving messages immediately. It did not work, he activated the device and started sending photons through, but he never received them. There is that better? Dumb ass
"This suggests that there may be a law within physics that prevents backwards time travel." You got it. What Is the Second Law of Thermodynamics? Traveling back in time would conceptually be the same as creating a perpetual motion engine, but on a _universal_ scale.
I'm sure there's a god answer/response to the following but I've never seen either point being addressed. 1) The twin paradox always deals with one twin staying at home and one speeding away in a spaceship and then returning. The direction of acceleration and movement for the space-twin is what causes the end result of the earth-bound twin bein older, even though they each saw the other aging slower. It's also said that if they never rejoin in the same inertial frame, they never had to resolve the difference. But what about two twins that leave Earth in opposite directions and then return? They should both still be the same age, right? But they saw each other staying young. 2) Gravity and acceleration are stated to be indistinguishable and people talk about how you can't tell if you're in a room on Earth or in a room in a spaceship accelerating at 1G. But there's very EASY ways to tell the difference. Drop two objects. On Earth, they get closer together and on the spaceship, they remain exactly the same distance apart (well, actually, they WOULD move close together due to the gravity between them but that can be factored out.) So at the very least, saying "gravity and acceleration are indistinguishable" isn't quite accurate, even if it does help illustrate an idea.
I feel like the grandfather paradox is when you kill your own grandfather then go back to the current time but seeing yourself isn't disappear yet and it's probably because the time machine doesn't go to your previous parallel universe because your parallel universe doesn't exist so it bring you to where you exist with different answer to why you still exist
I have been traveling through time as long as I can remember. It’s much more difficult to go back in time. I wish I had never started because I no longer have a choice and I’m never sure when I will be.
The best read on a topic adjacent to this one is *Dean Buonomo book from 2019 "Your Brain is a Time Machine: The Neurosciences and Physics of Time".* The reason why time itself and the way it is experienced by humans is a paradox, is because the rate at which our central nervous system is moving in relation to our acceleration, our efforts and gravitational position in relation to objects, is always changing to accommodate sympathetic and parasympathetic feedback loops.
@@brentkehler1685 From a physics perspective yes, from a neuroscience perspective no. The problem with humans is you can't have one without the other. The reason Einstein picked 'C' as the constant was because that is one thing that is sensed by everyone the same at roughly the same moment.
I have an hypothesis , I call it The happened! Once an event occurs then it is embedded in the universe as happened and can’t be undone. Once a time machine is created is the moment that happened like a video you can’t change what was filmed only observe (watch) past present future or the now.
Want to hear something truly terrifying? Several years ago I got to the realization that time dilation proves we're each the only conscious observer of our own universe. By this I don't mean we're the only ones perceiving our own thoughts from a certain experience: I mean literal physical reality and the entire universe must be unique for each person. Here's why: Two people, X and Y, walk to a space ship. Only one of them, let's say Y, boards this ship... X stays behind on the ground and waits: The ship will travel at 99% the speed of light for an hour with Y in it, then land at the exact location where it started. Once the ship returns, we know that Y will find a slightly aged up version of X and the entire Earth; Even if time passed at the same rate for each person relative to their own body, there's a desync between their perception of time from each other. Now here's where it gets scary: Both X and Y are consciously perceiving different points in time now, meaning different versions of reality and each other. They both chat after the ride is over, but the person staring back at them is no longer the same observer: Each consciousness is in a different reality perceiving a different version of the other person, one in the past the other in the future. From here on they may each make their own choices and go on to live in different physical realities from the other observer: To X it's possible Y died an year later, to Y he might still be hanging out with X from his perspective... or X experiences a version of Y who had an accident and was left with an impediment, while to Y he never had that accident and is just fine. I've thought about it many times and it's the only option that makes sense: Physical reality can only be the same for all observers if everything is synced up. As long as time dilation exist which it clearly does, we each end up in the past or future compared to others; Merely getting on a train or plane makes you desync from someone who is staying at home, heck even walking past someone sitting on a chair does it to a miniscule amount... at that moment you're automatically no longer perceiving the same physical world as the other person. So who is really staring back at me whenever I talk to another person? Is everyone else just a representation customized to our own reality, like a character that can do different things based on what you do during that particular run of the game? Someone will read and may even reply to this message, but in their own conscious world I might already be dead or never been born... so will any consciousness but my own actually read this exact message I typed here? How creepy but also cool it is to ponder this stuff!
Well, this theory already exists and has been discussed in great detail by several scientists, but good thinking, homie. Sometimes, thinking about things outside of our tangible world just arnt worth worrying about.
One of the best videos on time dilation... Life is surreal but we take it as real until the last day when we truly realise that it was just a passage of time.....
Noether-Theorem: Every symmetry is equivalent to a conserved quantity. Esp. translational symmetry has conservation of momentum as a censequence. We have tested a million time the conservation of momentum, so we know that physics is independent of the place. Same with rotation symmetry and conservation of angular momentum (and energy conservation and time symmetry). This contradicts the idea of different speeds of light depending on the direction of the path.
If you shine a torch in the direction of travel while traveling at the speed of light you will never see the light because it would never leave the torch because it is already traveling at max velocity! If you turned the torch to face 180 from the travel direction and move the torch in the direction of travel, then the light would start at the start position on the torch and extend to where the torch stops moving and just stay there, never to go away, even when the torch is switched off!
Um,, no. That is completely wrong. Light moves at the speed of light. Your clock moves slower than the clocks you are wizzing by. It is far stranger than you think. You both measure the speed of light the same.
@@michaelgarrow3239, let me expand on what I said as I think you missed what I was saying. I am not talking about an observer looking at the ship, I am talking about the ship, its speed and the two people on the ship. Person 1 and 2 are moving at the speed of light in the same direction as they are on the same ship. Person 1 points a light directly at person 2 who is exactly in the direction of movement. When person 1 turns on the light, because the light is already at the speed of light, it will never leave the torch in the direction of person 2. The only way the light can get to person 2 at the speed of light is if the light is traveling at twice the speed of light. Why am I wrong?
@@AidanMacnamara777 - Um,,, the 2 people you refer to are in the same frame of reference. They are motionless “relative” to each other. It is like here on earth. The earth is zipping around the sun at 67,000 miles an hour but you don’t notice because your relative notion is the same. There is some time dilation and space compression relative to observers in different references frames, but that only happens when we really are going fast.
@@michaelgarrow3239 Yes, but who is going fast - spaceship in its direction or the Earth in opposite direction? Travelers could argue that the Earth is moving and the time slowed there... and the theory of relativity says that they are right and also that they are wrong, which doesnt make any sense.
Clocks don't measure time. They measure motion in space expressed in units of time. Just as rulers don't measure inches but length express in units of inches. The value of the second doesn't change, just like the value of an inch doesn't change just because the ruler expands and contracts with changes in temperature.
Anybody wondering how a species that can only get a person about 400 miles from the surface of the planet can make such bold declarations about the nature of the universe???
Well, humans have been to the Moon multiple times and that is a bit more than 400 miles. There are also multiple craft that have ventured immense distances from the Earth and relayed back huge amounts of information, which is then used to learn about the nature of the universe. So, there is nothing to wonder about in relation to humans making "bold" declarations because they are backed by careful study. Maybe there is a cause for you to wonder, as you seem to have either ignored these facts or been unaware of them. PS I was wondering though, why you found it necessary to put three question marks at the end of a sentence. Do you over use all punctuation marks?
Hearing that just brought tears to me because I may have been 4 or 5 but quite possible i seen this take place thinking it was the north star i was looking at but when it got tiny gradually then go red and still gradually got smaller i knew at that moment that was someone leaving us, it did terrify my thoughts but was calmed down from noticing it leaving and not coming
you have no control, you are akin to a speck of dust but there is nothing wrong with that my speck. Enjoy your journey and allow what happens to happen
HELEN: Is that the time? MIKE: No, time is an abstract concept. This is a wristwatch. The Young Ones - Time Written by Ben Elton, Rik Mayall and Lise Mayer.
The only way to travel through time would be eliminating your own grandfather being tied through space time by the event of your own birth means you can only travel forward and back by certain amount.. severing you're link to time means you exist in space alone so you can travel through time however you want.
Wouldn't eliminating your grandfather have a ripple effect? His father would be eliminated, and so on until we all would be eliminated because we all descended from the same common ancestors, and the primates that they descended from would be eliminated also. So in essence we all would cease to exist.
Grandfather paradox is just a multiverse or alternate timeline. Can't travel back to your exactly point in time. It only creates a new alternative timeline. Time is always moving forward to you.
Time is always moving forward. Period. Entropy is the actual measuring stick. The paradoxes are impossible because you can not "go back" to a period of _less_ entropy. Entropy nearly _always_ increases and never decreases. The _only_ exception to that is thermodynamic equilibrium, which can be replicated, on a limited basis, but we very obviously do not have in the universal system. And even then the amount of entropy does not decrease but remains constant. Going back in time would require, for _one_ example, converting sunlight _back_ into separate hydrogen atoms, and not just for our sun. _But for every star in the universe._ Essentially it would be like pushing a rewind button. Entropy : _There is no rewind._
Even where time travel is involved, all event have to happen for the first time. The first time it happens there is NO loop created therefore there is NEVER a loop created, it is only stupid circular thinking that produces ridiculous time loops....
Time is configurational change -- in its most comprehensive sense, the word time refers to the evolution of our universe. Time dilation is the purely symmetrical artifact of the clock synchronization convention. Differential aging, e.g. clock slowing, is a result acceleration, which affects the frequencies of oscillators. The past only exists as records, recollections, etc. The future only exists as projections, imaginings, etc. In reality, there are no time travel paradoxes.
The thing that is always forgotten with time travel is that all that wonder full stuff that matter is made of The very thing everything is made of atoms are always going to be in very different places .The atoms that make up your body are somewhere else in the past being used for somthing else so how do you bring the same atoms back in time that are already there?
What we call time is just what is, a word. What probably isn’t mentioned in this video for good reason, is that what we call time sometimes speeds up for 1 observer and slows down for another. It bends. Don’t we say multiple times: times passed so quickly. Another at the same “time” sais the opposit. Time travel will only be able if we could liquify our bodies and the the paradoxes come at play of which we could potentially never observe a different result because we can’t change our 3 dimensional perspectives. So many laws prohibit us from moving through time as if we were meant to live in the moment and observe.
Issue with constant being one of the paradoxical group of terms known as absolutes. It doesn’t necessarily mean the terms in it are useless because as it relates to comparative observability, they do have their uses, as long as they are treated for what they are, including a resolving of the statement that it cannot even be absolutely stated legitimately that there are no absolutes. Regardless, it used to be regarded that light travelling only in a straight line until they hit something with blocking, reflecting or refracting capabilities was also a constant regardless of any other mechanic out there, but now it is understood that it can also be redirected by the extreme gravitational force of a black hole. I know I’m no professional, and it’s rare that, on this stuff, I can say stuff with any sense of conclusiveness, unless it’s to call out people confirmably with a certain addiction induced complex, but I will admit I can be happy to share that bit, at least. Also, mostly hyperbole, I know, but going on what I’ve picked up on relevant stuff with a hope that it could maybe incentivise an exploration of the concept, but… if there might possibly be a mechanic called temporal diversity, facilitated by there being more than one temporal dimension, too, maybe even a temporal equivalent of x, y, z, etc, etc, as well as the nature of how matter interacts with other matter in its path, maybe with a cost to it being, to quote a phrase loosely, “You can never go home”, might it be possible that temporal diversity resolves the grandfather paradox? Like I said, nothing more than hyperbole and I’d rather hope it doesn’t get picked up by these people I prefer to call out, but… I do like to consider it’s worth exploring at least.
A paradox is simply a human error. To understand the flaw with the grandfather paradox is to understand time isnt real. Traveling through time is like traveling from red to blue. It just makes no sense.
How will something age in a loop if the material for each loop is brand new each time it goes through a new loop? If I were to go back in time 20 years before I was born, I would constantly be born and do the exact same thing. But it wouldn't be me each time, it would be a different version of me with new material each time. It would not be me each and every time.
if you travel into the past most likely you would age . if you traveled into the future you would be fine . If you could fold timespace you could appear and disappear in the same moment unscathed.
I think this notion is wrong. Perhaps with speed, time slows down, and if you were travelling with such speed, after slowing back down, the time would realign with it's normal timeline ie. it would speed up to catch up. So in essence you wouldn't be X years younger when coming back, you would instantly age to catch up to the timeline you "landed" in.
The multi universe is a fun concept but the universe does not have endless resources to fulfill everyone's time travel fancies. It's still a finite, physical place.
I believe in the time endless loop theory. I escaped death 3 times in my life. There is something important that I must accomplish in this world. I am still seeking and search to what that is. The one thing we cannot change is destiny.
Time travel will never be a possibility, no matter how much people wish they could turn back the clock. The only reason time as we know it exists is because matter and light exists. Light exists because dark exists, "nothing" exists as an opposite of "something", life because death. What is the opposite of time? Reverse is still flowing but in the wrong direction. Time exists because without time objects couldn't move. I'd say you could come close to the illusion of stopping time, but the spiral of time just becomes longer.
We just need the next visionary to be born. Seems like over a certain period of time a person is born to solve a huge problem that pushes the human race forward. We had those who proved the world is round, those who imagined the laws of the universe, the crazy old man who thought of relativity, and so one. It’s like certain people are born to solve a problem so the next person can move forward.
Not saying it’s just part of the plan, but it’s interesting to think about.
We have many trying to prove its flat now go figure
From what I've noticed several ppl over the entire earth always discover things at the same time or around the same time.
That 'crazy old man' and his relativity nonsense sent mankind knowledge of the universe back centuries. Him and his followers are the epitome of Collective Stupidity. They are lower than the flat Earthers on the evolutionary scale.
Look at how many idiotic Twin Paradox videos are on TH-cam. Not a single one understands that there is no time-dilation occurring. Multiple experiments and observations have proven such. And yet, people still believe in it because there is an intrinsic need for people to worship false gods. To believe in the impossible. That one can achieve immortality. And that's what Einstein did. Founded the Church of Relativity to counteract the real scientist who where demystifying the universe. Taking away their beliefs in an eternal life. Einstein gave it all back to them and more. And all they had to do was build a spaceship and travel throughout the galaxy and find a nice black hole - intense gravity, to park their little spaceship and live for eternity.
Who really are the delusional ones here? Flat Earthers or Einstein cultist?
And the guy that had a cure for cancer was machine-gunned in WW1, the cheep battery is in the mind of a 17yo fighting in Ukraine right now…
There won't be any visionaries any more. Cost of reaserch, equipment and staff is just tremendous today that discoveries are treated as investment by only a few richest companies in the world.. We just picked up low hanging apples so far, now its only gonna get harder and harder.
That's crazy it comes back faster then it went. It's just like being on a long car ride it always seems to take longer going but on the way back it seems almost 2x faster. So I guess if you want a long life always move forward don't waste your time trying to go back!
I love this comment ❤
wutface
You would still die at an average age of 73 because nothing would change for you. Just relative to everything thing else. Nothing would affect your biology moving forward in time.
That's ONLY perception due to "new" or frontiering.
"Science and science fiction are the same thing" William Shatner.
Shat happens.
The Grandfather Paradox might have a solution...if one theory is correct,when you go back in time you go into another dimension,so you kill that dimension's grandfather not YOUR grandfather,thus no paradox.
If you did it you wouldn't exist to go back, so if you are able to go back you either choose not to do it, or circumstances prevent you from doing so. you're helping to create a past that already happened, so nothing would be different
I'm afraid that creates another paradox as the act of traveling through time would create a new alternate universe for which an amount of energy is required equal to that of the big gang or (in other words), all the energy that exists within our universe which is quite a lot. Another possibility of course is that the alternate universe is already there but that means that you are no longer traveling through time but jumping between alternate universes with no accurate way to determine in which universe you end up which makes the chances of you finding yourself in a universe in which humanity evolved to be... close enough to zero to call it zero.
Maybe in another parralel universe you´re your own grandfather ... not getting dizzy yet ? 🤣😛
@@terrycox1639 😂
Nope! You create with your arrival an instantly new timeline. This would change this world in a second. So you would not kill your Gramps, but the cramps of your parallel universe self...@@keithmichael112
Oh good, another terrifying thing that isn't terrifying. Entertainment at it's best.
Across this one off my list to ever watch again
@@rayraybonne8469 I don't know how long this has been an option... but I recently learned that if you hover over the title of a thumbnail of a video on the main TH-cam page, three dots appear to the right. Click on that and a menu appears. On this menu is the option "Don't recommend this channel." Select that and never be bothered with this channel appearing there ever again.
Lol. Tell me your brain is too small to grasp the concept, without telling me your brain is too small to grasp the concept.
There is a way to avoid the “mirror bounce” method for measuring the speed of Light. It has been shown that, at a certain distance from a black hole, light entering a special zone on one side of a black hole will travel in a curved path (around the backside of a black hole) and will re-emerge on the other side of a black hole.
This comment is underrated. So many videos saying measuring the one way direction of light is impossible. Mirror bounce always concerned me because how do you measure the time it takes light to actually bounce off the mirror?
@@donutwindy there is no mass to bounce so instantaneously
@@jopasc8998 I was under the impression that the silver atoms absorbed the light then retransmitted a photon back out. Otherwise I have no clue how light changes direction like that. Which would take time. I could be wrong though.
@@donutwindy why would you think that. source pls
@@jopasc8998 I don't think the link is pasting in mirrors the science of reflection explainthatstuff "How does the mirror reflect light? The silver atoms behind the glass absorb the photons of incoming light energy and become excited. But that makes them unstable, so they try to become stable again by getting rid of the extra energy-and they do that by giving off some more photons. (" Nothing is instantaneous, as nothing happens faster than light which we are trying to measure.
I think Avengers: Endgame did a good explanation of backwards time travel, where your past is your past, and if you travel back there, any changes made become an alternate, separate timeline, and when you return to your timeline, nothing has changed (multiverse theory). Other option is traveling back in time and you take a particular action, even though you think you're trying to change something, it ends up you were always meant to take that action (think first few seasons of Red Vs Blue, Harry Potter: ATPOA, or Interstellar) but that begs the question, as mentioned in this video, of where did the event start as it's seemingly stuck in an infinite loop. Time travel, although interesting, is probably a good way to fry one's brain permanently trying to figure out the how, why, and and all its nuances. Also consider, as mentioned in the video, we're on Earth moving. So how much slower is our time dilation compared to someone who is truly still in space, as we're roughly moving at 2.1 million KM per hour?
dont think you should base your arguments on movies. you are asking mulitiverse vs grandfather paradox.
also space itself is *moving*. stationary is an abstract concept
@@jopasc8998 it's more about relaying the different theories in a way others can understand, especially if they've seen the movie/show. As far as space moving, I mean truly dead in space, the epicenter/focus.
I will fry your brain then some time you find out any solutions
we're chasing a star that's hurling around a galaxy thats falling faster into another galaxy in a supercluster branch of ~10,000 galaxies that are all speeding up inbto The Great Attractor. We can never be still. 250mps dust would erode us alarmingly slowly but effectively :)
time is gonna take a lot more from us before revealing its self.
Finding something I don't understand interesting for 17mins should be studied as well 😂
Numbers, language and time: these are examples of mental constructs that help us to understand reality and each other. Much as we like to think that reality will bend itself around our mental constructs, it remains unyielding.
I love the thumbnail. The astronaut has a young look and then 10 minutes later he's an old man with a neatly trimmed mustache and beard. How did he get neatly trimmed facial hair just like that? LOL
“Time is a flat circle.” -True Detective, Season 1.
Seriously, though, what boggles my mind is if it really is true that time is another dimension like space. So imagine every spacetime event with a “location” pin somewhere out there. So even if it hadn’t happened yet, it’s out there just like a tree in a distant forest. Crazy.
This exact thought has kept me from getting to sleep on time many nights. It's really a bat shit crazy reality
Damn, this video makes my head spin. Too much mind-blowing information, but it was damn interesting. Talking about time travel is a really damn interesting thing that you can listen to endlessly. And I love that I can do it for you. 🤗
With the theoretical device that he mentions, where flying a ship around a long tube that has essentially the density of a black hole in it, wouldn’t that only work up to the point of it’s own creation, because once you reach that point in time, you will no longer have the device to go around
Catching up to what you see doesn't make your vision tangible.
But wasn't there a requirement that the tube be of infinite length? Yeah, doomed from the start for us time bound Tralfamadorians.
"What's really gonna bake your noodle later is would you have still broken it if I hadn't said anything."
-The Oracle, The Matrix
0:25: 🌌 Understanding the speed of light is crucial to unlocking the enigmatic nature of time.
4:15: ⏳ Time dilation occurs as objects approach the speed of light, causing changes in perception of time, length, and motion.
7:58: ⏰ The concept of time travel and its potential methods are explored, including the Tipler cylinder and the block universe theory.
11:30: 🕰 The paradoxes and possibilities of time travel.
14:58: 🌌 The many worlds interpretation suggests that the universe exists in a superposition of multiple states, and each event creates a new parallel universe.
Recap by Tammy AI
That was awesome. Love the different explanations. ♥
The person who put this together cannot tell the difference between casualty and causality. The only thing that I consider awesome about this video is the sheer lack of credibility.
I really like your channel they make learning fun
We have known for more than a century that space and time are inseparably linked. While this is a fun gedankenexperiment, round trip time might be the only way to properly define distance, so it's not that surprising that one-way time is undefined.
Nice imagination, altering time, a concept using an abstract concept (numbers) to effect 'thing's, which are tangible and real, and bending space, which is an absence of matter and comprised of 'nothing'. So give me a box full of time that I can uses whenever I want and a large jar of nothing that I can bend when I'm stressed.
Man used to judge time with day and night...then we decided to divide the day and night into smaller units of hours, minutes, seconds...
The universe didn't create this measurement...we did.
We measure things. Time measures the non tangible very accurately. A yard stick measures the tangible very accurately.
Your eyesight doesn't do either of these things very accurately at all
Which did we create?
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Or traveling to the past could be like watching old home movies, You may be able to observe the past but may not be able to inter-react to it in any way shape or form. So no paradoxes would be possible.
We can do this right now. Look in your telescope and observe the past of the universe. But yeah, I kinda get what your saying. Sorta like "Scrooge" you can go back, but its like a movie all around you. Guess if you had no mass (which solves some issues) this would be kind of possible.
If I had any super power it would be travelling through time but I'd only want to be able to observe.
Time travel is not possible because the Universe is not a loop. It always expands so you can't go back to the beginning point.
It may also simply be that it's impossible to change a past that has a future in which you came from. Meaning you were already part of that past. Using the old "stopping Hitler" experiment; imagine going back to stop Hitler and your attempt ends up helping. 😅
@@CynHicksI believe some events are “inevitable” and to interfere would cancel our own existence.
Imagine how different world history would be if say:
You go back in time, Christopher Columbus arrives and you sabotage all of the ships and eliminate his entire crew.
Everything in America changes, including the name.
Countless lives saved, countless lives never born. So many possibilities in different historical events.
Grandfather paradox is only a paradox if you think in linear time where its always cause, then effect. In non linear time, this need not hold. It's not something we normally encounter but that doesn't make it invalid, just confusing. Of course you couldn't go back in time in the first place as going back just one nano second would cause there to be two of you in the same space at the same time violating both the Pauli exclusion principle and the conservation of matter energy.
Not so… think of what we see as reality like a motion picture each frame is in itself singular and unique like a picture book… if you went back in time a removed you grandfather would be the same as removing a frame or a page out of the picture book the state it has collapsed into is not changed only a previous page removed with the rest of the book unaffected in that manner but in a different manner… also what we call “Space” can support 4 dimensionally spaced objects
The two way light/mirror measurement is perfectly valid. The flaw lies in assuming measurement one way could be different from another. But since the earth, sun, and galaxy are constantly moving, rotating and revolving, directions are always changing. If light-speed depended on direction, it would constantly vary through the motions of the earth, sun, and galaxy. But we don’t see even a hint of that. If so, light from flowers to the left would appear to be a different color than the same type of flower to the right. But we don’t see that either. This may be and interesting thought exercise, but it’s totally flawed in reality.
Thanks! This video really boggled my mind but I understood everything that was described. Thank you so much! 😊
You wasted your money.
@@dawidadamczyk I don’t think it is wasted money 💰 but you have a right to your opinion
@@dawidadamczykworry about your own paycheck.
Thank you for watching😊
Paradoxes are only an issue in linear models of time.
It is far more probable
that there
Are three intertwined forms of time
That exist in nature.
In one of the forms, each particle wave is on its own partly separate
Timeline. Another form
Has 3 dimensions that match
Each point in space.
And the third form has an
Infinite number of dimensions.
REEEEE! That's SPECIST bruh.
The narrator called the loops "casualty", but shouldn't it be "causality" loops?
He also said time was undirectional rather than unidirectional.
Going back in time violates energy conservation and thus is not possible.
Anything that goes back in time and meets itself in the past means duplicating matter, the atoms going back in time are the same atoms that will be met, this means creating matter out of nothing.
Traveling back in time not possible.
👍 Nice, energy only moves forward
At this time, I'm a hardcore "no" on the whole time travel thing.
But I still enjoy watching films that involve time travel. So long as I ignore the 'how' and focus on the storyline, I'm good.
I never studied quantum mechanics or string theory or anything advanced. Straight forward here and now physics involving potential and kinetic energies is my thing.
I see time as a man-made construct, a method for recording instances in history in order of happening.
For an instance to happen, all a certain type of molecules have to be in a certain place at a certain moment. The universe is how it is at that moment.
The snapshot of that moment is labelled as happening at a moment 'in time".
That's not to say that that same instance could never happen again (the monkey type-writing a Shakespearean piece likely has the same level of probability of occurring).
But that's it; all the atoms and molecules are where they're at at that moment in time.
So, how can it be possible to rewind time? I can get my head around travelling faster than light from A to B to see what is happening at B a little before people at A see it, but that's it for me.
I've never been able to imagine a ginormous, cosmic camera that records everything that ever happened everywhere in which we can rewind the film to a historical moment, ie time-travel.
This comment is super well written!
@@maxzytaruk8558 kind of you to say; Thank you :)
What do you think of time travel? Is it something that might be possible?
That's why everything is connected
It is very easy to travel forward in time, we are doing it right now. Going to the past though.... that is impossible.
Time is motion. If earth spins once it's a day. If earth travels around the sun, it's a year. If a photon travels 300 million meters, it's a second. Now if you travel 2 meters per second and I travel 1, after 1 second your distance is twice mine but our time is equal. If I travel an additional second, our distances are equal but my time is doubled. Fundamentally it a relationship between speed and distance. Time=distance ÷ speed
In the case that past, present and future exist all at the same time, it is not that you don’t have free will but instead it is that you already used your free will and made you decision and can not change what you have already decided and done! That’s exactly how I feel all the time, like I know that I have already decided just don’t know the decision yet !😊
if you want to not be affected by paradoxes in sci fi just say that you quantum entangled yourself to an indestructable\unaffected object, like a black hole and as long that exists you exist in any timeline, it's like being watched by a 3rd person camera in a video game, as long as the camera films you, you exist whatever you do to your grandparents.
I entangled myself with the eldritch god of hunger, and cats.
I don't exist in any timeline or universe, except the one where I do, but there is always one where I do.
...
I entangled with your mother
I declare.... BANKRUPTCY
My brain just got broke.
If you travel through space , the faster you go the less time you will have to react, steer. Doesn't that mean that traveling reqires time, mostly as control. If you have more time you have better control, and you have more time if you move slower.
The solution is quite simple: travelling back in time to our past is not possible, the laws of physics does not allow it.
a bit over 100 years ago laws of physics didn't allow objects heavier than air to fly and 500 years ago every "scientist" believed that Earth is flat and only one who proved that it isn't was burnt at the stake.
But it’s possible, we just don’t t have the technology yet.
Our understanding of physics is primitive as we have only been understanding the rules for 100-200 years so cant go back in time BUT what will we understand in 10,000 years?
It does if you are travelling back to a parallel universe.
@@I.am.Sarah. as of now, yes. But in 1000 years everything could seem like magic to us.
If you go back in time, your past becomes your future.
It is counterintuitive, but think of it as a sort of insertion of yourself into the past and the timeline.
You exist, go back, insert yourself and still exist.
You need to understand time more in a space-time correlation.
For instant if you have an apple in the room next to you and you don't see it, the apple is still there (most likely at least. It is not, if we live in a simulation.)
Think of time as the two rooms and of the apple as yourself.
If you take the apple from one room to the other, the apple still exists. The apple exists unconditionally to time, because he once started to exist and wasn't deleted.
Both rooms exist simultaneously, it doesn't matter what you change in them.
I think i explained it poorly, but that is my theory.
this is why old people drive slow
😂😂😂😂😂
😅😅
Underrated comment 😂😂😂
I'm in my late sixties, but I must not be very old.😂
Hopefully you too will be there someday, unless you die before you get old
The science fiction concept of time travel predicates on the notion that the traveler will retain his future properties as he goes into the past, which will mean he *could* affect changes in the past.
Picture, on the other hand, that with past travel, you revert to your past state, and even past position.
Not as exciting, but would certainly prevent any paradoxes.
Nice idea, but wrong...
Could I ask how you figure it to be wrong?
For clarity, if time is as much a dimension as space, then it stands to reason that the position of everything is a snapshot of that location in time.
So unless an entity were to be capable of operating outside of time, it would need to move within those snapshots.
This would remove any potential for time paradoxes
Time travel paradoxes always make me roll my eyes. If you could theoretically travel to any point in time, the act of travelling, as well as your mere presence at that point, would cause ripple effects that could not be predicted.
The Multiverse is about Balance. Imbalances are ALWAYS corrected.
And yk that how you traveled to a different point of time before ???
I would assume the butterfly effect.
Please check my comment above?
Ok you just made a bunch of statements you can't possibly back up. How do you know it needs balance? How do you know imbalances are always corrected? Explain.
"Time travel paradoxes always make me roll my eyes."
They should. It is and will always be a physical impossibility... because of one thing alone.
Entropy.
A given snapshot of "time" could be defined as x. In order to travel "back" on the "time-line" one measurement of any size, a year, a day... we would redefine x as x-1. This means entropy has _decreased_ relative to our origin, yet entropy increases even when the hard-math is done for reversals in functions illustrating traveling "backwards", even through the uncertainty of quantum mechanics.
In other words, traveling back in time would require us to enter a state of less entropy. If you overlay his illustrations in this video with the concept of a "perpetual engine" , you will have a fairly good notion as to why it is impossible. Conceptually there is no difference at all.
The universe is not causal…it operates on retro-causal principals. That’s why particles know before hand, what you will do and adjust…and explains why some people can see exact futures and then change them.
Time is just another way we use "something" to explain the unexplainable.
Nope! It's not even a constante factor. We can mannipulate the flow of time and we did it in experiment, which gave us a mesurable results...
Nice video. Without real proof are some speculations here.
time travel could be actully quite simple when your consciousness is creating spacetime, in that case it would create the future looking like your past while you travel, but its not your real parents that you meet since you are not back to the same spacetime coordinates thus anything you do like killing your parents or even the copy of your younger self has no consquences on you
This only assumes that the time line is linear in it's movement. If it is, then it's a 'block' universe. If one kills the supposed grandfather and does not disappear, that means you have not only traveled in time, but hopped into a parallel universe. This is a part of the 'many worlds' theory.
Wow how both you took so long to get the wrong answers. You both are my worst fears for the future showing up right here right now 🤦
Yep it would make another parallel universe that does not change your present. You can go back to the same time in the past and would just keep making these parallel universes. You would see each time you go back it will be a bit different then the next jump in the past. Time is linear you can't change what already happened.
@@judsonross6995I think time is one of those things that is not a line but it can act as one.
I think the best part would be that the person moving at speed light (like in Star Wars or Star Treks, you might not be able to record it as well on a video camera.
I'm fairly convinced, multiple world is not only a theory, I had several occasions when some of my belongings were traveled between dimensions, disappearing in our dimension, and reappearing some days later on a completely unrelated place. Even my family was puzzled sometimes when like my wedding ring was disappeared, when we were at my mum. We know it was there, because I have showed them to family. That evening the wedding ring was diasppeared while we were in a pub. We looked for it everywhere, but couldn't find it. A few days later when I travelled back home from my parents, it was on my bed. It was the same ring, with the same markings on it. Just travelled through time and space.
Something similar happened to me. I was at a bar when I noticed a ring had slipped off my finger. I looked around the bar and could not find it. I checked my pockets as well hoping it slipped off into my pocket. No luck, and after an hour or so I went to the restroom. After relieving myself and about to wash my hands I heard the sound of metal hitting the floor. I looked down and saw my ring on the bathroom floor. Still scratching my head on that one.
You need to ease up on the drugs.
At a bar lol ok
I want whatever you guys are taking sounds fun
Oh yeah the same thing happened to me
I argued with my teacher while in school that the speed of light couldn't be a constant if time wasn't bendable... while at the same time it couldn't be a constant if time was a variable... I used the rotation of a planet that a star shone upon for reference.
on one side the viewer is moving away from the light meaning it's relative speed is reduced, while on the other side the viewer is moving towards it meaning the relative speed was increased.
I also argued that the universe was proof that either energy could be created from nothing or cause and effect didn't have to be linear... we tried proving/disproving it by making som calculations with a timetraveler that went back to before the big bang to see what started it and entering a 0D space meaning that space went from nothing to something in pretty much no time since time is a effect of the physcial laws reacting
u disappoint me
My question is... How does anyone really know that time is different in space? Has anyone actually experienced this time difference before?
As far as I understand the issue is that the faster you’re moving, the slower time passes for you. While no human has ever noticeably aged differently, because the effect is small at the speeds we move at, we have used atomic clocks to prove the idea. If you want to read more about it, the experiment was the Hafele-Keating experiment. We took three hyper precise clocks (atomic clocks), and left one “at rest” in the lab, and sent two others flying around the world, one eastward and one westward.
In the end all three clocks differed, due to their speeds relative to each other and the rest clock.
GPS satellites have to be adjusted due to very small time dilation
@alexadao8852 let me guess… you also don’t believe in vaccines or evolution? Time dilation due to strong gravitational fields is proven. But again I am guessing you think all these people with their PhD’s in Physics are part of some illuminati conspiracy. The earth is not flat and science is real…
@@Frostcatification so in a case like that, what clocks time is the correct time? Even if they experienced time differently, once they come together, the time should be the one from the one that stayed. So the other 2 would have to adjust their times? It would suck to have to do that in my opinion cuz even if I experienced time different, I'd be forced to "fix" my clock once I got back, either losing time or gaining time. Or am I thinking about this wrong? Lol
@@noemytamayo9462 go watch videos on this as you are not understanding.
Time, in this definition doesn't exist.
As time is only a measurement, like an inch, it doesn't exist outside of some activities to measure. For us, time is based upon the rotation of the sphere on which we live. We have, over time, found ways to more finitely measure these events, but we are still simply labeling the series of events / observations we make.
There is only now. There is the hope of future events (tomorrow / future) and the remembrance of prior events (yesterday / past); but there is no scale to move forward and back upon.
Thats wrong. Rotation has nothing to do with time.
People who have taken psychedelics have more experience on this topic than scientists do 😂
yeah, no.
I would agree. Haven taken ayahuasca several times, it sure is different seeing the world.
@@Acteaon did your experiences vary a lot each time you did it? I think some substances temporarily turn off certain parts of the brain to reveal what is already around us. There is a lot we can't perceive because our brains developed to allow us to focus on only specific things and let others fade into the background. Unless a scientist has tried any substances, I don't think they can accurately describe perception and experiences of time. They can attempt to explain things with math and science but the experiences are also a piece of the puzzle.
@@coolbreeze5683 each experience was very different yes. Sure our brains are considered to be “mal (functioning/firing)” but it’s that very state that is amazing and eye opening.
Nail on the head . 👊
I think that time is an illusion because time is only present and witnessed in the context of Thermodynamics and more notably entropy. Even then we witness it as humans in our own reality, it doesn’t mean that it can be witnessed outside of our reality.
That is my two cents.
Time is an illusion and so is our life
Or we have a Creator with a purpose for us.
Big difference between "casualty loops", what you said, and "causality loops", what you meant to say.
The so-called paradox of twins is probably reversible - similar to distant figures that "appear" smaller to us, but when they get closer they "grow" to their original size.
If we take a moment and realize we can be both the measurer and observationist of ourselves we become participants and thus superposition our lives accordingly. As with Schrodinger's cat some look inward to themselves, others are the cat looking to get out of the box and some don't look to change anything at all. If you were to be confined in the box your the type to keep having yourself build a time machine (determined). If you're the type to look inward to yourself you'd realize the time machine blueprints aren't what defines you (super positioning). If you're the type to just get out of the box and not repeat the same fate than your the many worlds type (double slit experiments randomness)
I was easily able to go back in time AND make time flow backwards.... after eating some "special" mushrooms.
and what happened when you went back in time? tell the whole story please
Time is just a measurement of motion. To say time dilates is about as ignorant as saying that the value of an inch changes just because the ruler/object being measured expands and contracts with changes in temperature.
Time doesn't exist, it's just a measuring tool invented by people.
So how does it come speed, space and time are connected?
There are no separate entities in the universe like 'people'. Only the "I AM" or Consciousness exists. (For Eternity).
Time is just another word for change. So time dilation is change dilation in the universe, but Consciousness (which contains the universe) never changes.
Yep, for calculating work based on the concept of ownership.
Like gravity??
Time is a number and all numbers are unreal. Say you have 5 bananas, you have bananas but you don’t have 5 itself.
The paradox where you send a letter back in time to have someome build a time machine obviously couldn't happen because the shit wouldn't be built to send the letter! But if u build a time machine, you can send a letter back in time to ask for materials to make it easier to build
Outstanding video. Very well done Destiny! 👏
this may be unfitting, but the legacy of kain series (a game treasure) has wonderfully included the self consistency theory in their storyline although with an interesting twist
Could we ever comprehend.....who created these rules & who set all the creation/existance bound to follow these rules ie the laws of nature.
The grandfather paradox is impossible. Traveling backwards in time is an impossibilty wnd of discussion, the atoms that made up that past point of time have decayed and cannot be reclaimed. You can travel into the future, but only by slowing your own relative time in comparison to others' relative time, but it isnt the future to you, its still YOUR own perceived present.
But even if you COULD go back onto time, the atoms that create you are in existence, they cant just "vanish', and now your atoms exist in that past time, so therefore there is no reason why you shouldnt exist in the future. Either way, the genetic material that makes you, you, exists. Whether not yet combined, or already combined.
Thanks for saving me the job of typing this out! Time travelling paradoxes are just science fictiom
In my opinion on the subject, time always moves forward, no matter how fast you go.
I don't think there ever will be a way to travel backwards in time, but I do believe at some stage in our existence, we will develop methods of travelling forwards in time.
Pretty sure we've always been able to do that.
Not forwards, but sideways.
I agree that backwards will never be possible.
But forwards...? That's a whole different can.
If you don't mind me asking, do you believe that the future is already set (theologians would call this predestination)?
It does make deja vu seem a bit more serious, lol.
@@FaceInTheCrowd Ironically, I see Deja-vu as a possible future. Although, when you experience it, you instantly feel like it's something you've done before. So I'll say for now, I don't believe the future is set in stone for sure as I believe our actions have opposite reactions. Everything you do can manifest into something different. For me to say that, it sounds like I was meant to, meaning its set in stone. But I don't know.
@@TheeRyanBrice For the future, I am wholly undecided.
Some people believe the future is kind of set.
I'm fascinated by myths and legends like the (Greek) Three Fates.
The theory is sometimes unsettling to me though; the thought that no matter what I think I'm choosing to do, some being has already decided for me, outcome and all.
grandparent paradox: if you travel back in time and prevent your branch of the family tree to progress to where you were born, a new timeline might be created, or an alternate reality in the multiverse. If that is the case, then there's no longer a paradox.
You have to believe in alternate universes to think that one person can create another alternate universe simply by preventing their existence in one. I don't know where an alternate universe can exist. If somebody did that, there is something in my past I want to change. How can I tell myself I have a second chance?
Someone already built a backwards time travel device that allows for information to be sent back in time. He switched it on and no messages came through. This suggests that there may be a law within physics that prevents backwards time travel. It also implies that time has a linear flow, even if all of time is in existence.
So a guy invented a machine that doesn't do anything so he decided to call it a non-working time machine? I bet it involved a shoebox and some string, because those are the components that would enable the device to work exactly as you have described.
@@derrynh-NE where in there did I state that the guy intentionally built a nonworking device and then called it a nonworking time machine? I can’t remember the scientist who actually built the machine, but he was using concepts thought up by Ronald Mallet, who wants to use ring lasers to travel back in time. It’s not practical to use for a person because the ring laser would have to be the size of a galaxy, but this other scientist built a smaller version to send photons back in time, using Morse code. He theorize that when he turn the machine on, he should be receiving messages immediately. It did not work, he activated the device and started sending photons through, but he never received them. There is that better? Dumb ass
More likely he created a device that simply does not work.
The main problem is time is made for man . The universe can not tell time
"This suggests that there may be a law within physics that prevents backwards time travel."
You got it. What Is the Second Law of Thermodynamics?
Traveling back in time would conceptually be the same as creating a perpetual motion engine, but on a _universal_ scale.
I met 4 scientists who are so terrified about this just yesterday.
I am 4 scientists and pay this no mind
@@malalford Thank you now we can all rest at ease.
I'm sure there's a god answer/response to the following but I've never seen either point being addressed.
1) The twin paradox always deals with one twin staying at home and one speeding away in a spaceship and then returning. The direction of acceleration and movement for the space-twin is what causes the end result of the earth-bound twin bein older, even though they each saw the other aging slower. It's also said that if they never rejoin in the same inertial frame, they never had to resolve the difference. But what about two twins that leave Earth in opposite directions and then return? They should both still be the same age, right? But they saw each other staying young.
2) Gravity and acceleration are stated to be indistinguishable and people talk about how you can't tell if you're in a room on Earth or in a room in a spaceship accelerating at 1G. But there's very EASY ways to tell the difference. Drop two objects. On Earth, they get closer together and on the spaceship, they remain exactly the same distance apart (well, actually, they WOULD move close together due to the gravity between them but that can be factored out.) So at the very least, saying "gravity and acceleration are indistinguishable" isn't quite accurate, even if it does help illustrate an idea.
I am even more skeptical, i am not sure that there's a good answer at all. 😐
I feel like the grandfather paradox is when you kill your own grandfather then go back to the current time but seeing yourself isn't disappear yet and it's probably because the time machine doesn't go to your previous parallel universe because your parallel universe doesn't exist so it bring you to where you exist with different answer to why you still exist
That's quite some rant. Never heard of sentences and punctuation?
@@markfox1545 Grammar doesn't exist in that universe.
I have been traveling through time as long as I can remember. It’s much more difficult to go back in time. I wish I had never started because I no longer have a choice and I’m never sure when I will be.
Are you really travelled through time?
The best read on a topic adjacent to this one is *Dean Buonomo book from 2019 "Your Brain is a Time Machine: The Neurosciences and Physics of Time".* The reason why time itself and the way it is experienced by humans is a paradox, is because the rate at which our central nervous system is moving in relation to our acceleration, our efforts and gravitational position in relation to objects, is always changing to accommodate sympathetic and parasympathetic feedback loops.
thanks!!! sounds amazing!!
Nah. The relativity of simultaneity suggests a block universe. Past and future are equally real.
@@brentkehler1685 From a physics perspective yes, from a neuroscience perspective no. The problem with humans is you can't have one without the other. The reason Einstein picked 'C' as the constant was because that is one thing that is sensed by everyone the same at roughly the same moment.
I have an hypothesis , I call it The happened! Once an event occurs then it is embedded in the universe as happened and can’t be undone. Once a time machine is created is the moment that happened like a video you can’t change what was filmed only observe (watch) past present future or the now.
Want to hear something truly terrifying? Several years ago I got to the realization that time dilation proves we're each the only conscious observer of our own universe. By this I don't mean we're the only ones perceiving our own thoughts from a certain experience: I mean literal physical reality and the entire universe must be unique for each person.
Here's why: Two people, X and Y, walk to a space ship. Only one of them, let's say Y, boards this ship... X stays behind on the ground and waits: The ship will travel at 99% the speed of light for an hour with Y in it, then land at the exact location where it started. Once the ship returns, we know that Y will find a slightly aged up version of X and the entire Earth; Even if time passed at the same rate for each person relative to their own body, there's a desync between their perception of time from each other.
Now here's where it gets scary: Both X and Y are consciously perceiving different points in time now, meaning different versions of reality and each other. They both chat after the ride is over, but the person staring back at them is no longer the same observer: Each consciousness is in a different reality perceiving a different version of the other person, one in the past the other in the future. From here on they may each make their own choices and go on to live in different physical realities from the other observer: To X it's possible Y died an year later, to Y he might still be hanging out with X from his perspective... or X experiences a version of Y who had an accident and was left with an impediment, while to Y he never had that accident and is just fine.
I've thought about it many times and it's the only option that makes sense: Physical reality can only be the same for all observers if everything is synced up. As long as time dilation exist which it clearly does, we each end up in the past or future compared to others; Merely getting on a train or plane makes you desync from someone who is staying at home, heck even walking past someone sitting on a chair does it to a miniscule amount... at that moment you're automatically no longer perceiving the same physical world as the other person.
So who is really staring back at me whenever I talk to another person? Is everyone else just a representation customized to our own reality, like a character that can do different things based on what you do during that particular run of the game? Someone will read and may even reply to this message, but in their own conscious world I might already be dead or never been born... so will any consciousness but my own actually read this exact message I typed here? How creepy but also cool it is to ponder this stuff!
@Luke-iw6xe thats a new fallacy. Argument from smarty pants? 😂😂😂 good luck sir.
Well, this theory already exists and has been discussed in great detail by several scientists, but good thinking, homie. Sometimes, thinking about things outside of our tangible world just arnt worth worrying about.
One of the best videos on time dilation... Life is surreal but we take it as real until the last day when we truly realise that it was just a passage of time.....
There are no paradoxes of time only paradoxes of thought.
This comment deserves more upvotes
Noether-Theorem: Every symmetry is equivalent to a conserved quantity. Esp. translational symmetry has conservation of momentum as a censequence. We have tested a million time the conservation of momentum, so we know that physics is independent of the place. Same with rotation symmetry and conservation of angular momentum (and energy conservation and time symmetry). This contradicts the idea of different speeds of light depending on the direction of the path.
If you shine a torch in the direction of travel while traveling at the speed of light you will never see the light because it would never leave the torch because it is already traveling at max velocity! If you turned the torch to face 180 from the travel direction and move the torch in the direction of travel, then the light would start at the start position on the torch and extend to where the torch stops moving and just stay there, never to go away, even when the torch is switched off!
Um,, no. That is completely wrong.
Light moves at the speed of light. Your clock moves slower than the clocks you are wizzing by.
It is far stranger than you think.
You both measure the speed of light the same.
@@michaelgarrow3239, let me expand on what I said as I think you missed what I was saying. I am not talking about an observer looking at the ship, I am talking about the ship, its speed and the two people on the ship.
Person 1 and 2 are moving at the speed of light in the same direction as they are on the same ship. Person 1 points a light directly at person 2 who is exactly in the direction of movement. When person 1 turns on the light, because the light is already at the speed of light, it will never leave the torch in the direction of person 2.
The only way the light can get to person 2 at the speed of light is if the light is traveling at twice the speed of light.
Why am I wrong?
@@AidanMacnamara777 - Um,,, the 2 people you refer to are in the same frame of reference. They are motionless “relative” to each other.
It is like here on earth. The earth is zipping around the sun at 67,000 miles an hour but you don’t notice because your relative notion is the same.
There is some time dilation and space compression relative to observers in different references frames, but that only happens when we really are going fast.
@@michaelgarrow3239 Yes, but who is going fast - spaceship in its direction or the Earth in opposite direction? Travelers could argue that the Earth is moving and the time slowed there... and the theory of relativity says that they are right and also that they are wrong, which doesnt make any sense.
@@eklektikTubb - Yes correct. Both statements are true. Theoretically…
Clocks don't measure time. They measure motion in space expressed in units of time. Just as rulers don't measure inches but length express in units of inches.
The value of the second doesn't change, just like the value of an inch doesn't change just because the ruler expands and contracts with changes in temperature.
Anybody wondering how a species that can only get a person about 400 miles from the surface of the planet can make such bold declarations about the nature of the universe???
Well, humans have been to the Moon multiple times and that is a bit more than 400 miles. There are also multiple craft that have ventured immense distances from the Earth and relayed back huge amounts of information, which is then used to learn about the nature of the universe. So, there is nothing to wonder about in relation to humans making "bold" declarations because they are backed by careful study. Maybe there is a cause for you to wonder, as you seem to have either ignored these facts or been unaware of them. PS I was wondering though, why you found it necessary to put three question marks at the end of a sentence. Do you over use all punctuation marks?
Hearing that just brought tears to me because I may have been 4 or 5 but quite possible i seen this take place thinking it was the north star i was looking at but when it got tiny gradually then go red and still gradually got smaller i knew at that moment that was someone leaving us, it did terrify my thoughts but was calmed down from noticing it leaving and not coming
what u talking about?
They was a plane
No what i seen over Charleston in 95' or 1996 looked like the north star but took off...i guess at light speed, thats what im talking about,
@joycehodge7977 your parents put lsd in your dinner mate
you have no control, you are akin to a speck of dust but there is nothing wrong with that my speck. Enjoy your journey and allow what happens to happen
HELEN: Is that the time?
MIKE: No, time is an abstract concept. This is a wristwatch.
The Young Ones - Time Written by Ben Elton, Rik Mayall and Lise Mayer.
The only way to travel through time would be eliminating your own grandfather being tied through space time by the event of your own birth means you can only travel forward and back by certain amount.. severing you're link to time means you exist in space alone so you can travel through time however you want.
Wouldn't eliminating your grandfather have a ripple effect? His father would be eliminated, and so on until we all would be eliminated because we all descended from the same common ancestors, and the primates that they descended from would be eliminated also. So in essence we all would cease to exist.
'....casualty loops' (sic) sound painful. Causality loops - now they're a different matter :-)
How can you have a solution to a Paradox?? You need to go read the definition of Paradox
Grandfather paradox is just a multiverse or alternate timeline. Can't travel back to your exactly point in time. It only creates a new alternative timeline. Time is always moving forward to you.
Time is always moving forward. Period. Entropy is the actual measuring stick. The paradoxes are impossible because you can not "go back" to a period of _less_ entropy. Entropy nearly _always_ increases and never decreases. The _only_ exception to that is thermodynamic equilibrium, which can be replicated, on a limited basis, but we very obviously do not have in the universal system. And even then the amount of entropy does not decrease but remains constant.
Going back in time would require, for _one_ example, converting sunlight _back_ into separate hydrogen atoms, and not just for our sun. _But for every star in the universe._ Essentially it would be like pushing a rewind button.
Entropy : _There is no rewind._
Even where time travel is involved, all event have to happen for the first time. The first time it happens there is NO loop created therefore there is NEVER a loop created, it is only stupid circular thinking that produces ridiculous time loops....
*Employer ....* "Why are you late?!!"
*Employee.....* "sorry boss, got caught in a time dilation!!"
Casualty loops? No! Causality, please! What a calamitous catastrophe! (... that's cat...as...troph...eee!) Phew!
Time is configurational change -- in its most comprehensive sense, the word time refers to the evolution of our universe. Time dilation is the purely symmetrical artifact of the clock synchronization convention. Differential aging, e.g. clock slowing, is a result acceleration, which affects the frequencies of oscillators. The past only exists as records, recollections, etc. The future only exists as projections, imaginings, etc. In reality, there are no time travel paradoxes.
Love your videos.
The thing that is always forgotten with time travel is that all that wonder full stuff that matter is made of The very thing everything is made of atoms are always going to be in very different places .The atoms that make up your body are somewhere else in the past being used for somthing else so how do you bring the same atoms back in time that are already there?
What we call time is just what is, a word. What probably isn’t mentioned in this video for good reason, is that what we call time sometimes speeds up for 1 observer and slows down for another. It bends. Don’t we say multiple times: times passed so quickly. Another at the same “time” sais the opposit. Time travel will only be able if we could liquify our bodies and the the paradoxes come at play of which we could potentially never observe a different result because we can’t change our 3 dimensional perspectives. So many laws prohibit us from moving through time as if we were meant to live in the moment and observe.
Issue with constant being one of the paradoxical group of terms known as absolutes. It doesn’t necessarily mean the terms in it are useless because as it relates to comparative observability, they do have their uses, as long as they are treated for what they are, including a resolving of the statement that it cannot even be absolutely stated legitimately that there are no absolutes. Regardless, it used to be regarded that light travelling only in a straight line until they hit something with blocking, reflecting or refracting capabilities was also a constant regardless of any other mechanic out there, but now it is understood that it can also be redirected by the extreme gravitational force of a black hole. I know I’m no professional, and it’s rare that, on this stuff, I can say stuff with any sense of conclusiveness, unless it’s to call out people confirmably with a certain addiction induced complex, but I will admit I can be happy to share that bit, at least. Also, mostly hyperbole, I know, but going on what I’ve picked up on relevant stuff with a hope that it could maybe incentivise an exploration of the concept, but… if there might possibly be a mechanic called temporal diversity, facilitated by there being more than one temporal dimension, too, maybe even a temporal equivalent of x, y, z, etc, etc, as well as the nature of how matter interacts with other matter in its path, maybe with a cost to it being, to quote a phrase loosely, “You can never go home”, might it be possible that temporal diversity resolves the grandfather paradox? Like I said, nothing more than hyperbole and I’d rather hope it doesn’t get picked up by these people I prefer to call out, but… I do like to consider it’s worth exploring at least.
I bet you can't find _one_ scientist who's "terrified" by whatever you're going to talk about.
His voice is fantastic
IT doesnt make any sense why whould you get older by traveling fast
A paradox is simply a human error.
To understand the flaw with the grandfather paradox is to understand time isnt real. Traveling through time is like traveling from red to blue. It just makes no sense.
How will something age in a loop if the material for each loop is brand new each time it goes through a new loop? If I were to go back in time 20 years before I was born, I would constantly be born and do the exact same thing. But it wouldn't be me each time, it would be a different version of me with new material each time. It would not be me each and every time.
if you travel into the past most likely you would age . if you traveled into the future you would be fine .
If you could fold timespace you could appear and disappear in the same moment unscathed.
I think this notion is wrong. Perhaps with speed, time slows down, and if you were travelling with such speed, after slowing back down, the time would realign with it's normal timeline ie. it would speed up to catch up. So in essence you wouldn't be X years younger when coming back, you would instantly age to catch up to the timeline you "landed" in.
The multi universe is a fun concept but the universe does not have endless resources to fulfill everyone's time travel fancies. It's still a finite, physical place.
Why doesn’t it? Anything is possible in the vastness of the universe
@@PraveenSrJ01 The universe is not mystical not metaphysical but a physical space albeit immense, and not infinite.
The block universe theory is supported by special relativity. It describes space-time as an unchanging four-dimensional "block".
I believe in the time endless loop theory. I escaped death 3 times in my life. There is something important that I must accomplish in this world. I am still seeking and search to what that is. The one thing we cannot change is destiny.
Time travel will never be a possibility, no matter how much people wish they could turn back the clock. The only reason time as we know it exists is because matter and light exists.
Light exists because dark exists, "nothing" exists as an opposite of "something", life because death. What is the opposite of time? Reverse is still flowing but in the wrong direction. Time exists because without time objects couldn't move. I'd say you could come close to the illusion of stopping time, but the spiral of time just becomes longer.
Excellent! Thank you!