Does this mean Cause and Effect can work backwards? Not only does Cause cause an Effect, but an Effect effects the Cause? 'Cause this would effect everything!
Considering our understanding of randomness, and how it can be plied to contribute in a statistically non-random way to a specific outcome, it is fair to consider whether or not the outcome (the effect) has "requested" the cause, somehow, in a backwards fashion of the usual time direction. So yeah, go nuts
I think clairvoyance is the only way we currently have for this and it’s a lot more common than we think. Like when a mother can sense something is wrong with her child before or while it’s happening.
an idea i've been playing with may put a different "spin" on the idea of retrocausality, or backward time flow. Basically the flow of "time" is a function of the entropy of the information contained within evolving quantum field states. At any given moment the current state of the various fields (and particles they contain) can be described preciscely with causal continuity extending back to their original states due to the information contained in the various tensor and vector fields. However, having this precise knowledge of the present state, including particle positions, means we can not know precisely what the future states will be as there is a probabilistic element to the evolution of waveforms in the various fields, therefore there is no information that yet exists about those future states. This also implies that if time flowed backward the fields would return to an earlier state, reversing entropy, and in doing the previous state and causal path information would be lost. Or to put it another way; The forward flow of time creates information, the backward flow of time destroys it. This is likely why we only ever experience the forward progression of time. Conscious experience involves forming and recalling memories, and since a new memory is new information it can only form with the forward flow of time. No forward flow of time, no memories. No memories, no consciousness. We can only "see" the backward flow of time in experiments which create information but do not disseminate it before it can be lost, such as in the delayed choice quantum eraser experiments. Time likely flows back and forth constantly, but we are simply unaware, as all the information about the "previous" future has been erased from existence. I know this sounds like heresy of one of the most fundamental laws of nature, the conservation of information, but it, in fact, is governed by it. By viewing time as intrinsically linked to the creation and dissemination of information it is easier to see why information can not be destroyed; information is a property of time, which from our perspective will only ever move forward. so from our perspective it is never destroyed. Another consequence of this hypothosis is that time is not likely to be perfectly symmetric with respect to all fields. The conditions for backward flow are far less probable than for forward as flow direction depends on the number of entangled or interdependent particle states. The greater the interdependence of a current field or particle state on other field or particle states, the less likely it is that sufficient information can be lost to successfully reverse time on a large scale. any small quantum fluctuation will quickly be undone and as it regains information from addition interactions. Moreover, if this is true, time is not static or predetermined but is most likely a constantly changing, relative and dynamic property of existence. This could imply that moment is the only thing that exists, even if that moment may not be the same everywhere, but that's another discussion all together.
"...But only one where we beat Thanos" that made my morning. After reading that Anthony Bourdain passed this morning I was extremely sad. But after what Physics Girl had said I started to feel just a bit better.
If I'm understanding this correctly, I think this is a little bit inaccurately described. I don't think retrocausality is where you see the outcome of an action before the action occurs, but rather you see the outcome of an action due to the causes applied to the _entangled_ particles, not the "local" ones. Since entangled particles mimic each other instantly regardless of distance, it's technically traveling backward in time, since you are observing the effect of the entangled particle before you can visually see it being affected. In other words, you wouldn't be able to see your shirt get coffee stained before the mug tipped over. Instead, here's a more analogous scenario (let's assume all of the entangled particles are lumped together and that we know exactly where they are): Your coffee suddenly gets really hot, because at that very moment, the entangled particles fell into the sun. But, you point a telescope to observe the particles, only to find they haven't fell into the sun yet (it takes about 500 seconds for light from the sun to reach Earth). 500 seconds later, you then see the particles fall into the sun.
Retrocausality is simply when the cause comes after the effect. It's not specifically about entangled particles, that's just one aspect of this hypothesis, if I'm understanding it properly at least.
@peterschmidt It's commonly misreported that quantum measurements on one entangled particle "instantly" effect the other. What's really going on, time-wise, is that performing a measurement on one entangled photon effects the entire timeline of the other, from the moment they were entangled up until the non-measured one is finally absorbed some time later (potentially on another measurement device). And this is why the delayed choice experiment can see the effect on one entangled photon before the decision is made on how to measure the other (the cause). In short, quantum entanglement communication is not "instantaneous", but rather "timeless". It happens across the entire timeline of the partner photon. In fact, there's a thought experiment (that might have actually been performed... I'll have to research that) that if you find a large, distant galaxy cluster that's causing gravitational lensing of a more distant galaxy, where the more distant galaxy is seen both to the right and to the left of the closer galaxy cluster, due to the gravitational lensing, that you could masure a photon from the image of the more distant galaxy on the right side of the lens and see the polarity of a partner photon on the other side of the galaxy already had the effects of the other measurement, meaning that that left-side photon had the result in itself billions of years ago, when it left that galaxy, on its way here, perhaps even before the earth existed.
New scientist published an article on the experiments being done to measure this affect in 2013 I think, using the half silvered mirror, a double slit and two different pathways through fibre optic cables of significantly different lengths. The surprising part is that it was not followed up much. Weirdly, I was only talking about this a few days ago, small consciousness I suppose Love your work you two, keep it up
Not sure, in my interpretation, time is a derived property of cause and effect. Time is just the order of ALL causes and effects in the universe. A photon doesn’t experience time, cause and effect (creation and destruction) are at the same time in its point of view. We only see it traveling with C, so we can distinguish the two from each other, and from everything else happening between the two. Therefore BY DEFINITION, time can go only in one direction, because effect is also defined as it happens after the cause.
I would disagree and say time is a function of causality, though you are right that normally people understand it in your direction. Reason being is you can't have the flow of time from the past towards the present/future without causality. Future is caused by time flowing. Future is caused. No time without causality. I think time is the duration between cause and effect, but not all causal connections have a duration between them.
The answer is, time isnt linear moving forward. Its infinite and everywhere at all times of existence. Time is now and 10000 years ago, at the same time. So if something is strong enough to cause a wave in time, it can theoretically affect a past or future point in time.
I think that what we describe as wormholes could be happening in the case of quantum entanglement. There is a 'two ends of paper meeting' kinda moment when particles are entangled in that they are connected as one whole in a different dimension but are perceived as two separate opposing particles in our dimension. Where we see there being distance, in reality it's the same particle regardless of the space between its halves. The 'seam' between those two halves is the wormhole, perhaps wrapped around the particles themselves in our dimension.
So in my Quantum Physics Class we discussed what "features" our theorie of quantum mechanics should have. Those properties were locality, determinism, causality and the reality principle. As it turns out it`s not possible to satisfy all those properties as was shown by using bell's equation. Usually you give up on the reality principle and as a consequence determinism (you do the math with complex functions) and everything works out just fine. By giving up locality instead you cant really work out anything because you would have to know the state of the whole universe at one point. We didn't talk about giving up causality but i feel like that is the one thing you really don't want to give up plus every physicist knows that if a theory violates the 2nd law of thermodynamics it is probably wrong
Befors I watchOS this video I didn’t knew that this theory existed, I actually and I’m serious made this theory for my own a couple of months ago, and then I’ve developed it more and more, and the I watch THIS and see that my theory actually exist??!!!??! Yes, I am serious!
As a subscriber to PhysicsGirl, let's get her up to 1mil subs. Seeker has 3.3mil subs, and I bet most of my fellow science enthusiasts would like her channel. She's smart and entertaining.
This might help explain why that when I was around the age of 6 and despite being made to feel unwanted and worthless and as a result have suffered a life of crippling low self esteem I have as long as I can remember have had an undying knowing that what I have to offer this existence has much value than I or anyone could have ever known. In short... My belief in the fact that it doesn't matter where one comes from or even necessarily where one is at the end but what does matter is all the things we touch and influence along the way, no matter how small or seemingly insignificant really does matter and for that reason we should all carry on to the best of our abilities to have a positive effect on the world we experience around us. Now how could I have known this and other strange and now long held beliefs that have held the test of time (I'm almost 50), if something like this isn't tied to the core of my earliest recollections of my consciousness and thoughts. I would be willing to bet there are many others of us who seemed to know highly complex things way before current science says they should have been able too.
When I saw Physics Girl (to whom I am already subscribed), I predicted exactly what the comments would be. But actually, either Seeker is doing a great job filtering them, or they've been buried at the bottom, but I'm glad to see that there aren't so many of the type I expected.
Yes, retrocausality exists and you experience it everyday. But you will not notice it unless you pay careful attention to seemingly random thoughts that pop into your head. And pay attention to seemingly random topics of conversations you have with friends and family or even strangers. Then sit back, relax and watch whatever you watch on TV or the Internet, especially if you have planned to watch some series. Pay attention to seemingly random videos that appear on your youtube or instagram feeds. At some point you will realize those seemingly random thoughts were not random at all. But actually were thoughts based on whatever you were going to encounter in the near future. The more you notice it the more you will notice it. It gets pretty wild because soon you will realize why TV shows are called programming. Since you are receiving thoughts based on what you plan or don't plan to watch before you even watch it. I use to catalog these events on a digital tape recorder so I could remember how it unfolded. I have over 500 events recorded over a period of 10 years. You may start to feel your life is predetermined if you go down this rabbit hole. But as Jane Roberts, The Seth Material and related books say. Past, present and future all exist now. And essentially you are entangled with all your other selves.
mind wandering into the future, experiencing it finding out what there is I do not like and then changing the present because of it without actually having to go to that future to learn from is a form of retrocausality. A possible future has just affected my present decision. Planning ahead is a way of time travelling.
While I think that retrocausality is plausible, it doesn't explain entanglement because we already use it for communication. That is to say, the state isn't just set once. Changes to one apply to the other and we can measure that. This means that for itvto change it's past it would first have to break causality.
hei guys great video and great topic: i just want to signal a mistake: at 01:00 Diana says Spooky action at distance is what Einstein called quantum entanglement is actually wrong. The right thing to say I guess would be "spooky action at distance is HOW Einstein used to call quantum entanglement". Erwin Schrödinger called it Verschränkung (translated by himself as entanglement). Hope this was useful, keep up the good work everyone. Ciao!!
Quantum retrocausality can be achieved by routing power through the stasis field of the photon array. You need a type 4 dilithium transducer to repolarize the electro gravitational matrix.
This seems like the kind of pretzel logic mental exploration that arises from misinterpretations of the double slit experiment. When two particles are entangled the postulate states that by 'observing' one of them...knowing its position, spin etc...you bring it out of the many possibilities wave state. Knowing one...you know the other. Therefore you have changed the entangled particles state also. Thats it.
I want an experiment that could determine if the particles are not violating the speed of light but are sending the information backwards in time at the speed of light. since at that point it would just be a vector of four directions it would be possible to determine the actual local speed of time as a distance.
My idea was that entangled particles travel at the speed of light and therefore don't experience time. Therefore when you measure the spin you will affect the spin when the got split and so the other particle. Gues this is same idea, so it's called Retrocausality.
There is nothing strange with time travel, only with all the paradoxes it creates. As long as it's described in a way that doesn't allow anyone to make changes to a past measurement, it's as intuitive as any other quantum phenomenon
I have a question that is miles away from this topic, I recently purchased a carbon steel frying pan & went through the seasoning process, I'm very impressed with the non-stick results, it got me wondering what is the chemistry behind the seasoning process, I'm guessing a thin layer in graphite is formed, but, would like to know the answer or where to look for it???
0:17 time does not have only one direction, time does not move, like expand. Time is like an ocean, a colorless ocean. It is just there. And actions happens inside it.
Someone made an experiment where they gave air molecules random momenta. This means that some groups of particles are moving away from a point, increasing entropy, while others are moving towards a point, decreasing entropy. They found out that the particles always move away from a point. Since the particles had random momenta, this means entropy should be able to increase backwards in time, thereby allowing a second time direction. Maybe this proves retrocausality is possible.
Ha! Jung's already said something like this. We are attracted to "our center", and our past and present are affected by our future selves. He puts it in a far more elegant fashion, though.
Hi friends, I enjoy watching your show, but when there are 2 people switching back and forth it makes it a bit harder to focus on the already conceptually complex material hahaha. Either way, dope video ! Thanks 😎
Question: If we see an iceberg we tend to only see the top that is above the water, and we tend ot call that the iceberg, and see it as a complete thing. But of course it's not, it's a part of a thing. And even if we look at each part of a thing in sequence, that doesn't mean that the thing itself is sequential. So why do we think that time is sequential? We look at time in sequence, we only see the part of time that is known to us as 'the present', and we then look at the other parts of it in sequence that are, until we do so, 'the future'. But we decide it's sequential-ness by looking at it in sequence. It doesn't mean that it has sequentialness of it's own. So here's the question: Are we right to look at time sequentially?
Maybe the entangled particles were always opposite in their creation and measuring any value on one particle doesn't mean that the value was previously both 1 and -1, just that one particle is -1 and the other 1 and you just don't know which until you measure.
Retro-causality is logical if we consider that time is 0 anytime anywere , for a particle with speed = c. Example: for a photon time is 0 from the moment when is created until is absorbed by a electon...so...this fit even for " duble slit experiment delayed choise "
Doesn't the delayed choice quantum eraser experiment at least provide some evidence for retrocausality? Or does it just imply that information can be retroactively transferred between entangled pairs of particles?
But the second law can't be the guiding force for time, it has little to say about specific micro states and can even be undone at near infinite time scales.
Cause and effect. Cause and effect is omnipresent in our everyday lives, as well as in quantum mechanics. And if in modern philosophy this concept (cause and effect) causes controversy, then this is due to a misunderstanding of the essence of quantum mechanics. ---- ''If you are not completely confused by quantum mechanics, you do not understand it'' / John Wheeler / ''Quantum mechanics makes absolutely no sense'' /Roger Penrose/ "Nobody understands quantum mechanics and that's a problem". /Sean Carroll/ ----- It is quite possibly that "cause and effect" in quantum physics is subject to Heisenberg's uncertainty principle -------.
Yeah, this is why in the 90s when I was in science class and I was sitting there thinking about quantum mechanics and I realize no the cat is dead. And then I further realized the way this works also explains the speed of light. Retro causality explains. General relativity. The speed of light is the speed of light. Because the maximum speed matter reaches at the end of time is the speed of light and you can’t pass push but I called quantum horizon. And the quantum horizon begins at the beginning of time which is the future. Can you reach the future at the end of time in all matter, reaches a speed of light
Now why are we assuming that measuring one particle affects the other instead of just assuming that they were created with the spin that is going to be measured? Like when you flip a coin and look at one side and it’s heads you immediately know the other side is tails? What’s spooky about that?
Made me think, if one were to travel to the past simply put, all instances are the future regardless of any exterior reference, you would travel forward to the past implying spacetime is a closed loop, or existence repeats? I’d like to know where causality fits amongst time travel should it be deemed possible 👍 happy thinking lol
So would it be a retrocausality if my stuffs over here at my table are not moved in the present, which is by the pass of every minute becoming past, a result of my future self deciding not to move it.?
what about those psych tests where people took the vocabulary test before they studied and did better on the words they studied vs didnt study despite the backwards timeline?
So for example let’s say thermodynamics applied to the fifth dimension in the fourth dimension in the fourth and fifth and third dimension were all connected to each other what would that look like
Mangocraft the issue with pulling energy from the past is you would still have a limit otherwise in my opinion it would open a rift in time or create a black hole. At which it would then be pointless to pull energy from the past as you output end would eventually become what you created. If it did not eventually turn into a rift or black hole I would say you were more then likely pulling energy from an alternate universe. Which of you pulled enough energy from there you could also create a black hole where you would have a reverse black hole on your end. Or enough energy could create a 1 directional wormhole connecting the 2. In the direction of the energy being pulled.
Wait but then if I pull energy from the past, I wouldn't know that I pulled energy from the past because it was the past.. So I'd think that the energy was already there before I started o_O
Hooooollllyyyy shit! This might not seem very strange because everyone is on TH-cam now, but I stumbled on this video and noticed “physics girl” in the title. I vaguely wondered who that was, then the video started and I see physics girl. Turns out we went to the same tiny high school in Hawai’i. Small world. Bizarre experience. I think she was in pre-calc in ninth grade, so the physics girl thing isn’t surprising.
I understand the theory for entangled particles and that the particles can be separated by great distances (light years). My questions are, how can we determine exactly where each particle is in the pair unless we create them in order to observe this effect? Also, unless we can pin point each and every particle and its pair in the universe how can we be sure it's only 2 particles that are ever joined together?
What if all particles are entangled and their partners exist in other universes where you maybe went left instead of right? And those we observe just happen to exist in the same universe, the exception not the rule.
So if particle from future is tangled with past so that means they can only know what the past not to time travel right? (Its hard to explain what exactly in my mind)
Everyone I talk to about sensing the future understand what I'm talking about and most have experienced it themselves. It would be very difficult to have a scientific study on this phenomenon because of its randomness though.
I suggest a quick experiment on retrocausality - conduct a double slit experiment WITH detectors to discover which slit the particle went through. BUT, don't look at the resulting pattern until you have DELETED the which-way data (which you have never looked at). If the pattern is two-banded then there's probably no retrocausality. If it's an interference pattern, then the experiment somehow KNEW you were going to delete the which-way data before you did it.
I think it basically means that the past may not be the past but future and the future is the past and constantly being thrown back and forth between its location in quantum space
I'm thinking of this more like how the future could affect what's happening now. Its the only thing that explains the neverending matrix moments I'm having lately.
If you get an entangled particle that is in a different point of a gravity well or moving at a different speed in space, CAN they be entangled as time will not be relatively moving at the same pace? Relativity and quantum entanglement seem like two things that need to be synced together.
Quantum Eraser anyone? Other than experiments like those we wouldn't be able to tell whether time was symmetrical or not, because if an event from the future influenced (will influence) the past, it would do the same to our memory, see the problem here? We would be absolutely certain that this is what happened (will happen) in the past, it would also be in the history books. We just happen to see a flow of time from the past into the future, because at a time t the amount of information (read: entropy) is lower than at t plus a few seconds - that includes forming a memory. However, there's no contradiction that I can see if time were running backwards, erasing the memory of something that happened in the past and changing that past. The Quantum Eraser, on the other hand, may be able to reveal what's going on thanks to entangled photons.
I've misread it as Quantum Retrocasuality and sure was wondering what the heck could it mean. Maybe some old Converse shoes with laces entangled together?
What about infinite inflation though? And the theory that time is the same backwards or forwards and will always look forward to us? How does retro causality fit into that? And how many scientists support retro causality? Any credible ones leading the charge?
All these people don't understand what quantum entanglement really is about. Usually simplest answer the correct one? The spin of the atoms aren't actually chosen when the other is measured, they are chosen the moment of entanglement
If time travel was possible at any point in the future and if anyone actually succeeds at doing it wouldn't we know by now because if they went back in time would we see something or someone that shouldn't be here at some point in the present or past.
stuff cannot be deciphered because, there is always another veil, so its nothing more than series of never ending veils, so question is really whats with all the veils?
ImagineIf you had a piece of graph paper and each square represented 10 million years of the universe. Suddenly all of those squares are erased would it not be a representation of time not existing but only space ? So, your location would be relative to all other positions in that space.
They need to make a video on how time travel is improbable. Gravity doesnt travel with you, so if you go back 6 months you will end up in space cuz the earth was in a different spot back then.
That is the silliest thing ive ever read. That would be like suggesting if you jump while riding inside a bus....the back door should smash into you at the speed the bus is traveling. Preposterous
When I was a young man, I once got into a fight....and then I time traveled. The guy knocked me into next week.
"But then I created a time machine to go 1 week back in time; I knocked some guy into next week."🗿
Ppl pop
Does this mean Cause and Effect can work backwards? Not only does Cause cause an Effect, but an Effect effects the Cause?
'Cause this would effect everything!
Master Therion that's some homestuck level shit right there
affects*
Master Therion. I’m confused to.
Considering our understanding of randomness, and how it can be plied to contribute in a statistically non-random way to a specific outcome, it is fair to consider whether or not the outcome (the effect) has "requested" the cause, somehow, in a backwards fashion of the usual time direction.
So yeah, go nuts
I just met my fu-
*FBI, GET DOWN!*
I think clairvoyance is the only way we currently have for this and it’s a lot more common than we think. Like when a mother can sense something is wrong with her child before or while it’s happening.
an idea i've been playing with may put a different "spin" on the idea of retrocausality, or backward time flow.
Basically the flow of "time" is a function of the entropy of the information contained within evolving quantum field states.
At any given moment the current state of the various fields (and particles they contain) can be described preciscely with causal continuity extending back to their original states due to the information contained in the various tensor and vector fields.
However, having this precise knowledge of the present state, including particle positions, means we can not know precisely what the future states will be as there is a probabilistic element to the evolution of waveforms in the various fields, therefore there is no information that yet exists about those future states. This also implies that if time flowed backward the fields would return to an earlier state, reversing entropy, and in doing the previous state and causal path information would be lost.
Or to put it another way; The forward flow of time creates information, the backward flow of time destroys it.
This is likely why we only ever experience the forward progression of time.
Conscious experience involves forming and recalling memories, and since a new memory is new information it can only form with the forward flow of time. No forward flow of time, no memories. No memories, no consciousness.
We can only "see" the backward flow of time in experiments which create information but do not disseminate it before it can be lost, such as in the delayed choice quantum eraser experiments.
Time likely flows back and forth constantly, but we are simply unaware, as all the information about the "previous" future has been erased from existence.
I know this sounds like heresy of one of the most fundamental laws of nature, the conservation of information, but it, in fact, is governed by it.
By viewing time as intrinsically linked to the creation and dissemination of information it is easier to see why information can not be destroyed; information is a property of time, which from our perspective will only ever move forward. so from our perspective it is never destroyed.
Another consequence of this hypothosis is that time is not likely to be perfectly symmetric with respect to all fields.
The conditions for backward flow are far less probable than for forward as flow direction depends on the number of entangled or interdependent particle states. The greater the interdependence of a current field or particle state on other field or particle states, the less likely it is that sufficient information can be lost to successfully reverse time on a large scale. any small quantum fluctuation will quickly be undone and as it regains information from addition interactions.
Moreover, if this is true, time is not static or predetermined but is most likely a constantly changing, relative and dynamic property of existence. This could imply that moment is the only thing that exists, even if that moment may not be the same everywhere, but that's another discussion all together.
"...But only one where we beat Thanos" that made my morning. After reading that Anthony Bourdain passed this morning I was extremely sad. But after what Physics Girl had said I started to feel just a bit better.
If I'm understanding this correctly, I think this is a little bit inaccurately described. I don't think retrocausality is where you see the outcome of an action before the action occurs, but rather you see the outcome of an action due to the causes applied to the _entangled_ particles, not the "local" ones. Since entangled particles mimic each other instantly regardless of distance, it's technically traveling backward in time, since you are observing the effect of the entangled particle before you can visually see it being affected.
In other words, you wouldn't be able to see your shirt get coffee stained before the mug tipped over. Instead, here's a more analogous scenario (let's assume all of the entangled particles are lumped together and that we know exactly where they are):
Your coffee suddenly gets really hot, because at that very moment, the entangled particles fell into the sun. But, you point a telescope to observe the particles, only to find they haven't fell into the sun yet (it takes about 500 seconds for light from the sun to reach Earth). 500 seconds later, you then see the particles fall into the sun.
Just like Crazy 'Predestination', yeah with lot of Drama......
Retrocausality is simply when the cause comes after the effect. It's not specifically about entangled particles, that's just one aspect of this hypothesis, if I'm understanding it properly at least.
I think you just gave me a brain tumor
@@lazyh-online4839 you are correct.
@peterschmidt It's commonly misreported that quantum measurements on one entangled particle "instantly" effect the other. What's really going on, time-wise, is that performing a measurement on one entangled photon effects the entire timeline of the other, from the moment they were entangled up until the non-measured one is finally absorbed some time later (potentially on another measurement device). And this is why the delayed choice experiment can see the effect on one entangled photon before the decision is made on how to measure the other (the cause). In short, quantum entanglement communication is not "instantaneous", but rather "timeless". It happens across the entire timeline of the partner photon.
In fact, there's a thought experiment (that might have actually been performed... I'll have to research that) that if you find a large, distant galaxy cluster that's causing gravitational lensing of a more distant galaxy, where the more distant galaxy is seen both to the right and to the left of the closer galaxy cluster, due to the gravitational lensing, that you could masure a photon from the image of the more distant galaxy on the right side of the lens and see the polarity of a partner photon on the other side of the galaxy already had the effects of the other measurement, meaning that that left-side photon had the result in itself billions of years ago, when it left that galaxy, on its way here, perhaps even before the earth existed.
2 years ago Christopher Nolan saw this video let's make a Movie on this 🍿 on it Guess "TENET" 😁😁
That thanos joke just killed it✔️✔️😂😂
No, Thanos did.
Josiah Klein 😂😂👍
It nearly went over my head but I was able to catch it due to my reflexes.
What? Where? When?
some stupid comic joke, leave it for better.
New scientist published an article on the experiments being done to measure this affect in 2013 I think, using the half silvered mirror, a double slit and two different pathways through fibre optic cables of significantly different lengths. The surprising part is that it was not followed up much. Weirdly, I was only talking about this a few days ago, small consciousness I suppose
Love your work you two, keep it up
Not sure, in my interpretation, time is a derived property of cause and effect. Time is just the order of ALL causes and effects in the universe. A photon doesn’t experience time, cause and effect (creation and destruction) are at the same time in its point of view. We only see it traveling with C, so we can distinguish the two from each other, and from everything else happening between the two.
Therefore BY DEFINITION, time can go only in one direction, because effect is also defined as it happens after the cause.
I would disagree and say time is a function of causality, though you are right that normally people understand it in your direction. Reason being is you can't have the flow of time from the past towards the present/future without causality. Future is caused by time flowing.
Future is caused. No time without causality.
I think time is the duration between cause and effect, but not all causal connections have a duration between them.
The answer is, time isnt linear moving forward. Its infinite and everywhere at all times of existence. Time is now and 10000 years ago, at the same time. So if something is strong enough to cause a wave in time, it can theoretically affect a past or future point in time.
Think of quantum entanglement
Thanks for introducing me to Physics Girl!
I LOVE PHYSICS GIRL
i am not but do not know why xD
I love overwatch
Justin Carnes How do you know
QUANTUM ENTANGLEMENT IS 2 BARYONS MANIPULATED BY 1 TACHYON. 1/3 to 2/3 (REVELATIONS 12) 1/3 ANGELS 2/3 DEMONS
lol I'm gay, when I said that I love her it was never sexual XD
I think that what we describe as wormholes could be happening in the case of quantum entanglement. There is a 'two ends of paper meeting' kinda moment when particles are entangled in that they are connected as one whole in a different dimension but are perceived as two separate opposing particles in our dimension. Where we see there being distance, in reality it's the same particle regardless of the space between its halves. The 'seam' between those two halves is the wormhole, perhaps wrapped around the particles themselves in our dimension.
Super pair, love the collaboration. Very retro. What caused this idea?
I wholeheartedly support this and hope we see more collaborations to come.
So in my Quantum Physics Class we discussed what "features" our theorie of quantum mechanics should have. Those properties were locality, determinism, causality and the reality principle. As it turns out it`s not possible to satisfy all those properties as was shown by using bell's equation. Usually you give up on the reality principle and as a consequence determinism (you do the math with complex functions) and everything works out just fine. By giving up locality instead you cant really work out anything because you would have to know the state of the whole universe at one point. We didn't talk about giving up causality but i feel like that is the one thing you really don't want to give up plus every physicist knows that if a theory violates the 2nd law of thermodynamics it is probably wrong
Befors I watchOS this video I didn’t knew that this theory existed, I actually and I’m serious made this theory for my own a couple of months ago, and then I’ve developed it more and more, and the I watch THIS and see that my theory actually exist??!!!??! Yes, I am serious!
The Thanos line made me chuckle. Good job :)
As a subscriber to PhysicsGirl, let's get her up to 1mil subs. Seeker has 3.3mil subs, and I bet most of my fellow science enthusiasts would like her channel. She's smart and entertaining.
This might help explain why that when I was around the age of 6 and despite being made to feel unwanted and worthless and as a result have suffered a life of crippling low self esteem I have as long as I can remember have had an undying knowing that what I have to offer this existence has much value than I or anyone could have ever known. In short... My belief in the fact that it doesn't matter where one comes from or even necessarily where one is at the end but what does matter is all the things we touch and influence along the way, no matter how small or seemingly insignificant really does matter and for that reason we should all carry on to the best of our abilities to have a positive effect on the world we experience around us. Now how could I have known this and other strange and now long held beliefs that have held the test of time (I'm almost 50), if something like this isn't tied to the core of my earliest recollections of my consciousness and thoughts. I would be willing to bet there are many others of us who seemed to know highly complex things way before current science says they should have been able too.
When I saw Physics Girl (to whom I am already subscribed), I predicted exactly what the comments would be. But actually, either Seeker is doing a great job filtering them, or they've been buried at the bottom, but I'm glad to see that there aren't so many of the type I expected.
Gotta hand it to Seeker, you guys have been on a roll. Highly appreciate the quality content. 👌🏼
Yes, retrocausality exists and you experience it everyday. But you will not notice it unless you pay careful attention to seemingly random thoughts that pop into your head. And pay attention to seemingly random topics of conversations you have with friends and family or even strangers. Then sit back, relax and watch whatever you watch on TV or the Internet, especially if you have planned to watch some series. Pay attention to seemingly random videos that appear on your youtube or instagram feeds. At some point you will realize those seemingly random thoughts were not random at all. But actually were thoughts based on whatever you were going to encounter in the near future. The more you notice it the more you will notice it. It gets pretty wild because soon you will realize why TV shows are called programming. Since you are receiving thoughts based on what you plan or don't plan to watch before you even watch it. I use to catalog these events on a digital tape recorder so I could remember how it unfolded. I have over 500 events recorded over a period of 10 years. You may start to feel your life is predetermined if you go down this rabbit hole. But as Jane Roberts, The Seth Material and related books say. Past, present and future all exist now. And essentially you are entangled with all your other selves.
mind wandering into the future, experiencing it finding out what there is I do not like and then changing the present because of it without actually having to go to that future to learn from is a form of retrocausality. A possible future has just affected my present decision. Planning ahead is a way of time travelling.
While I think that retrocausality is plausible, it doesn't explain entanglement because we already use it for communication. That is to say, the state isn't just set once. Changes to one apply to the other and we can measure that. This means that for itvto change it's past it would first have to break causality.
hei guys great video and great topic: i just want to signal a mistake: at 01:00 Diana says Spooky action at distance is what Einstein called quantum entanglement is actually wrong. The right thing to say I guess would be "spooky action at distance is HOW Einstein used to call quantum entanglement". Erwin Schrödinger called it Verschränkung (translated by himself as entanglement). Hope this was useful, keep up the good work everyone. Ciao!!
Quantum retrocausality can be achieved by routing power through the stasis field of the photon array. You need a type 4 dilithium transducer to repolarize the electro gravitational matrix.
3:57 “but only one where we beat Thanos. Thanks for watching.” Lmfao
This seems like the kind of pretzel logic mental exploration that arises from misinterpretations of the double slit experiment. When two particles are entangled the postulate states that by 'observing' one of them...knowing its position, spin etc...you bring it out of the many possibilities wave state. Knowing one...you know the other. Therefore you have changed the entangled particles state also. Thats it.
I want an experiment that could determine if the particles are not violating the speed of light but are sending the information backwards in time at the speed of light.
since at that point it would just be a vector of four directions it would be possible to determine the actual local speed of time as a distance.
My idea was that entangled particles travel at the speed of light and therefore don't experience time. Therefore when you measure the spin you will affect the spin when the got split and so the other particle. Gues this is same idea, so it's called Retrocausality.
There is nothing strange with time travel, only with all the paradoxes it creates. As long as it's described in a way that doesn't allow anyone to make changes to a past measurement, it's as intuitive as any other quantum phenomenon
I have a question that is miles away from this topic, I recently purchased a carbon steel frying pan & went through the seasoning process, I'm very impressed with the non-stick results, it got me wondering what is the chemistry behind the seasoning process, I'm guessing a thin layer in graphite is formed, but, would like to know the answer or where to look for it???
0:17 time does not have only one direction, time does not move, like expand. Time is like an ocean, a colorless ocean. It is just there. And actions happens inside it.
So excited to see this being discussed. I have been living with Retrocausality for a very long time. 🙏🏽💗
I think what she wants to say at 2:37 is that no one has proved that time must be *a*symmetrical" (not symmetrical)
Someone made an experiment where they gave air molecules random momenta. This means that some groups of particles are moving away from a point, increasing entropy, while others are moving towards a point, decreasing entropy. They found out that the particles always move away from a point. Since the particles had random momenta, this means entropy should be able to increase backwards in time, thereby allowing a second time direction. Maybe this proves retrocausality is possible.
Trace FINALLY says it right at 1:30. He's been saying they spin in the same direction for years. No hate here. I'm just glad he's corrected it.
OMG YOU GUYS BROUGHT ON PHYSICS GIRL!!! I LOVE HERR!!!!
Ha! Jung's already said something like this. We are attracted to "our center", and our past and present are affected by our future selves. He puts it in a far more elegant fashion, though.
Do an episode on white holes and then an episode on quantum white holes (tachyons) PLEASE!
Hi friends, I enjoy watching your show, but when there are 2 people switching back and forth it makes it a bit harder to focus on the already conceptually complex material hahaha. Either way, dope video ! Thanks 😎
Question: If we see an iceberg we tend to only see the top that is above the water, and we tend ot call that the iceberg, and see it as a complete thing. But of course it's not, it's a part of a thing. And even if we look at each part of a thing in sequence, that doesn't mean that the thing itself is sequential. So why do we think that time is sequential? We look at time in sequence, we only see the part of time that is known to us as 'the present', and we then look at the other parts of it in sequence that are, until we do so, 'the future'. But we decide it's sequential-ness by looking at it in sequence. It doesn't mean that it has sequentialness of it's own. So here's the question: Are we right to look at time sequentially?
Maybe the entangled particles were always opposite in their creation and measuring any value on one particle doesn't mean that the value was previously both 1 and -1, just that one particle is -1 and the other 1 and you just don't know which until you measure.
Well forward time in completely local. So perhaps backwards time is nonlocal.
Quantum retro-causality is one potential explanation of the "Delayed Choice Quantum Eraser" experiment.
Retro-causality is logical if we consider that time is 0 anytime anywere , for a particle with speed = c. Example: for a photon time is 0 from the moment when is created until is absorbed by a electon...so...this fit even for " duble slit experiment delayed choise "
Doesn't the delayed choice quantum eraser experiment at least provide some evidence for retrocausality? Or does it just imply that information can be retroactively transferred between entangled pairs of particles?
My mind was just bent out of time, now I have to regress to a new beginning and start all over again.
But the second law can't be the guiding force for time, it has little to say about specific micro states and can even be undone at near infinite time scales.
Cause and effect.
Cause and effect is omnipresent in our everyday lives, as well as in quantum mechanics.
And if in modern philosophy this concept (cause and effect) causes controversy,
then this is due to a misunderstanding of the essence of quantum mechanics.
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''If you are not completely confused by quantum mechanics, you do not understand it''
/ John Wheeler /
''Quantum mechanics makes absolutely no sense'' /Roger Penrose/
"Nobody understands quantum mechanics and that's a problem". /Sean Carroll/
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It is quite possibly that "cause and effect" in quantum physics is subject to Heisenberg's uncertainty principle
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Yeah, this is why in the 90s when I was in science class and I was sitting there thinking about quantum mechanics and I realize no the cat is dead. And then I further realized the way this works also explains the speed of light. Retro causality explains. General relativity. The speed of light is the speed of light. Because the maximum speed matter reaches at the end of time is the speed of light and you can’t pass push but I called quantum horizon. And the quantum horizon begins at the beginning of time which is the future. Can you reach the future at the end of time in all matter, reaches a speed of light
Now why are we assuming that measuring one particle affects the other instead of just assuming that they were created with the spin that is going to be measured? Like when you flip a coin and look at one side and it’s heads you immediately know the other side is tails? What’s spooky about that?
when he said future me will come.... I had my hopes up well we tried it or did u not film it?
I thought CP-symmetry issues show that time is not the same forwards as backwards
Made me think, if one were to travel to the past simply put, all instances are the future regardless of any exterior reference, you would travel forward to the past implying spacetime is a closed loop, or existence repeats? I’d like to know where causality fits amongst time travel should it be deemed possible 👍 happy thinking lol
So would it be a retrocausality if my stuffs over here at my table are not moved in the present, which is by the pass of every minute becoming past, a result of my future self deciding not to move it.?
what about those psych tests where people took the vocabulary test before they studied and did better on the words they studied vs didnt study despite the backwards timeline?
So for example let’s say thermodynamics applied to the fifth dimension in the fourth dimension in the fourth and fifth and third dimension were all connected to each other what would that look like
So if this exists, I can break entropy and make infinite energy that somehow comes from the past?
Mangocraft the issue with pulling energy from the past is you would still have a limit otherwise in my opinion it would open a rift in time or create a black hole. At which it would then be pointless to pull energy from the past as you output end would eventually become what you created. If it did not eventually turn into a rift or black hole I would say you were more then likely pulling energy from an alternate universe. Which of you pulled enough energy from there you could also create a black hole where you would have a reverse black hole on your end. Or enough energy could create a 1 directional wormhole connecting the 2. In the direction of the energy being pulled.
wtf is this info
Wait but then if I pull energy from the past, I wouldn't know that I pulled energy from the past because it was the past.. So I'd think that the energy was already there before I started o_O
Bryan Stewart Wut.. me just wanna make inf. NRG and me kill da universe accidentally
Didn't the delayed choice quantum eraser experiment show something like this?
Hooooollllyyyy shit! This might not seem very strange because everyone is on TH-cam now, but I stumbled on this video and noticed “physics girl” in the title. I vaguely wondered who that was, then the video started and I see physics girl. Turns out we went to the same tiny high school in Hawai’i. Small world. Bizarre experience. I think she was in pre-calc in ninth grade, so the physics girl thing isn’t surprising.
I understand the theory for entangled particles and that the particles can be separated by great distances (light years). My questions are, how can we determine exactly where each particle is in the pair unless we create them in order to observe this effect? Also, unless we can pin point each and every particle and its pair in the universe how can we be sure it's only 2 particles that are ever joined together?
What if all particles are entangled and their partners exist in other universes where you maybe went left instead of right? And those we observe just happen to exist in the same universe, the exception not the rule.
So if particle from future is tangled with past so that means they can only know what the past not to time travel right? (Its hard to explain what exactly in my mind)
You should have tried to get Looking Glass Universe for this series, she actually studies quantum mechanics.
I'm going to watch this video again yesterday to see if I understand it.
Yay, Diana! Also, with time symmetry, don't you also have both charge symmetry and reversal? Also known as antimatter...
Explains the double slit results, too.
Everyone I talk to about sensing the future understand what I'm talking about and most have experienced it themselves. It would be very difficult to have a scientific study on this phenomenon because of its randomness though.
She is awesome!!)
I suggest a quick experiment on retrocausality - conduct a double slit experiment WITH detectors to discover which slit the particle went through. BUT, don't look at the resulting pattern until you have DELETED the which-way data (which you have never looked at). If the pattern is two-banded then there's probably no retrocausality. If it's an interference pattern, then the experiment somehow KNEW you were going to delete the which-way data before you did it.
I like that!
I think it basically means that the past may not be the past but future and the future is the past and constantly being thrown back and forth between its location in quantum space
I need to look into some basics first, didn't get why particle B has to be the opposite of particle A... x(
matter antimatter retrocausality in form then actuation to duality of construct as time everlasting..
Can U do a video on Parity and CPT symmetry? And also give a much detailed information on Quantum retrocasuality.
what if retrocausality is applied only to a specific phenomenom ? like gravity? it would mean only a reversal of atraction to repulsiveness.
I'm thinking of this more like how the future could affect what's happening now. Its the only thing that explains the neverending matrix moments I'm having lately.
If you get an entangled particle that is in a different point of a gravity well or moving at a different speed in space, CAN they be entangled as time will not be relatively moving at the same pace? Relativity and quantum entanglement seem like two things that need to be synced together.
Isn’t quantum retrocausality in the movie arrival? Or no?
TheDeathDragon EXACTLY THAT
Quantum Eraser anyone? Other than experiments like those we wouldn't be able to tell whether time was symmetrical or not, because if an event from the future influenced (will influence) the past, it would do the same to our memory, see the problem here? We would be absolutely certain that this is what happened (will happen) in the past, it would also be in the history books. We just happen to see a flow of time from the past into the future, because at a time t the amount of information (read: entropy) is lower than at t plus a few seconds - that includes forming a memory. However, there's no contradiction that I can see if time were running backwards, erasing the memory of something that happened in the past and changing that past. The Quantum Eraser, on the other hand, may be able to reveal what's going on thanks to entangled photons.
I miss Trace so much!! Is he still doing vids for youtube?
💖 you both - thanks for the spooky science!
When a charter has visions of the future in tv/movie, would that be considered retrocausality? And now I want to go watch infinity war again.
wtf is the title??😂
star innovative its What The Fysics
I've misread it as Quantum Retrocasuality and sure was wondering what the heck could it mean. Maybe some old Converse shoes with laces entangled together?
yes
What about infinite inflation though? And the theory that time is the same backwards or forwards and will always look forward to us? How does retro causality fit into that? And how many scientists support retro causality? Any credible ones leading the charge?
I might be over simplifying this but isn't time the fourth dimension and if times the 4th Dimension then why would it be mono directional
3:53 I love this humor HAHAHA
i thought pbsspacetime did a video not long ago explaining a particle breaks time symmetry and thus doesnt exist
All these people don't understand what quantum entanglement really is about. Usually simplest answer the correct one? The spin of the atoms aren't actually chosen when the other is measured, they are chosen the moment of entanglement
So like the past changes according to what happens in the future
If time travel was possible at any point in the future and if anyone actually succeeds at doing it wouldn't we know by now because if they went back in time would we see something or someone that shouldn't be here at some point in the present or past.
Does anyone wonder if the sun turned off for 30 mins then turned back on ... what it would look like when it came back on
stuff cannot be deciphered because, there is always another veil, so its nothing more than series of never ending veils, so question is really whats with all the veils?
Does this mean we can use this to send messages to the past? If the past has the technology to receive them? Maybe we should start listening.
ImagineIf you had a piece of graph paper and each square represented 10 million years of the universe. Suddenly all of those squares are erased would it not be a representation of time not existing but only space ? So, your location would be relative to all other positions in that space.
It's that feeling you get when your co-worker takes the last good donut and there's nothing you can do about it.
This can disprove a popular theory in the belief that we’re living in a simulation
They need to make a video on how time travel is improbable. Gravity doesnt travel with you, so if you go back 6 months you will end up in space cuz the earth was in a different spot back then.
That is the silliest thing ive ever read. That would be like suggesting if you jump while riding inside a bus....the back door should smash into you at the speed the bus is traveling. Preposterous
Physics girl 😍 love her!
This theory is somewhat in the German Netflix original series "Dark"