Do the Past and Future Exist?

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PBS Space Time

PBS Space Time

7 օր առաջ

Is all that exists just whatever exists right now? Is the past erased and the future a void yet to be filled? Well, the answer lies in between the past and the future - in the elusive, ever-moving eye-blink that we call the present.
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Hosted by Matt O'Dowd
Written by Matt O'Dowd
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WhatTha What
WhatTha What 2 ժամ առաջ
This sounds like render distance... Simulation?
Kraflyn 3 ժամ առաջ
why do you call the fraud "the smartest guy in universe"?
Son&PopCo-OP 3 ժամ առաջ
No. No they do not. I just saved you 16 minutes. Go watch something useful instead.
jama warsame
jama warsame 4 ժամ առաջ
A.G.I will be man's last inventions
Lisen TuMei
Lisen TuMei 4 ժամ առաջ
Thank you for the extravagant explanation of Perception and Imaginary Theory. Good video though.
Mithaq 5 ժամ առաջ
I read it "Does the Fast ans Furious exist" for some reason lol
oren shved
oren shved 6 ժամ առաջ
Matt, you look either super drunk (which ozzies don't get) or super sick in this video... so... get well, man! :)
GAURAV SHARMA 6 ժամ առաջ
Too complicated. Simple Version : "Yesterday is history, tomorrow is mystery, today is a gift, thats why its called a present" - Master Oogway
Phil Robinson
Phil Robinson 6 ժամ առաջ
WTF is he talking about? I haven't had enough drugs for any of this to make sense. And I have an exceptional IQ. The answer is no. Easy. No!!
Bo Huggabee
Bo Huggabee 6 ժամ առաջ
interesting question. you'd percieve time as some interdimensional existence that overlays one another, past present and future all in one space. hmm.
Yaps 6 ժամ առաջ
What a ghastly load of posts. Can't really blame some of you as this vid is so patronising to anyone that has even a basic understanding of physics and Einstein. If it was intended as a science intro for people below that level then it so missed. Instead, read Carlo Rovelli's books e.g Reality is not what it seems and The Order of Time.
Johnny O
Johnny O 6 ժամ առաջ
Sharkie 6 ժամ առաջ
I was literally thinking about this exact thing last week and now it’s in my recommended...
Buddy And The Blueprints
Buddy And The Blueprints 6 ժամ առաջ
I will be honest. I can not follow this. I am stupid. :(
Shaheen Ghiassy
Shaheen Ghiassy 7 ժամ առաջ
If I moved forward would my cosmic event horizon actually change? 🤔 As I move forward, time for me slows down to compensate, so my overall spacetime stays the same - thus my cosmic event horizon stays the same right??? Not sure, I get confused haha - but seems odd that I can change my cosmic event horizon
Joe Moore
Joe Moore 7 ժամ առաջ
Am I the only one who paused the video a ton to try to understand what he’s saying?😂
Duncan 7 ժամ առաջ
Funfact about predetermination: It's real. Another fun fact: It will have zero effect on perception of free will. Humans do not have the unmodified capabilities to know what will happen more then a few second in the future, and even then their accuracy is terrible. This is the absolute universally strongest example of 'ignorance is bliss'. We have free will due to our inability to know what will happen next or to connect all the dots that are inexorably converging into inevitability. Even your denial/acceptance of it all is part of it; you were built this way from before your birth and molded by each second of your environment, even if that knowledge leads you itself to another environment. Let that sink in, and then slowly realize it doesn't matter. Perception of free will is as good as the real thing because we would not know either way.
CodeName PizzaJr
CodeName PizzaJr 7 ժամ առաջ
So has anyone ever figured out how dejavu works ? If so let me know
Duncan 7 ժամ առաջ
Before I watch Ill answer what I believe. Yes. Yes they exist in the same way the end of a long rope exists even when you cannot see the end of the rope, or even a few feet from where you are on that rope. You're only allowed to travel a certain speed along the rope and it gradually comes into view. This is only true if predetermination exists. I personally believe it does, and human science is slowly coming to this as a fact as we sort through reasons why it doesn't exist (not being able to see or understand something, does not prove that it doesn't exist, it only proves that it not knowable to us in either those approaches, or possibly any approach under the laws of physics. Indeed, existence should be impossible, yet here we are, so there was a catalyst and infinity has a beginning) Everything in existence has a infinitely precise story behind it that reaches back to the beginning of all creation.
Robert Fields
Robert Fields 7 ժամ առաջ
So if all causality happens at a speed and not instantly, are we only able to perceive the past? Since you and I cannot occupy the same point in spacetime, even if we’re in the same room, do you only exist in my past and I in yours?
jmb 7 ժամ առաջ
everything is predetermined. there is no free will. if you think you couldve not procrastinate, dont bother. you were meant to procrastinate or get fat, be an ass.
Darren Roberts
Darren Roberts 7 ժամ առաջ
I'm realy gonna mess with everyone's head. Ok so let's say on the 6th of October,! (my conscious present), we have a conversation and I asked you is this day the present, You laugh and say 'yes of course it is'. Now, let's say, your conscious present is on the 20th of December. You would have a memory of a crazy person 😜 me, asking you is the 6th October the present. my conscious present would be your past, but, when the 6th of October was your conscious present it would be my future. I haven't lived yet, my conscious present would be two and a half month previous to this event. Everyone in the world could be living in a different conscious time, within there own lifetime. Imagine all of time has already played out, everything the whole universe is born and ends in a flash the only thing that gives the univers meaning is what we perceive as the present, Look at it a different way. A 100 year old man in a care home seems to have lived he's entire life but maybe he's conscious present is 50 years before now or maybe he was only just born 🤔 So the past present and future could all exist, and consciousness is spread throughout, space time. Or i could be an alien messing with head
spine spindle
spine spindle 7 ժամ առաջ
Jesus this channel can sometimes talk alot of baloney
M Ryan
M Ryan 8 ժամ առաջ
So, Dr. Who was right when he said that time was "A big ball of wibbly wobbly, timey wimey stuff." 🤔
Rick Oshay
Rick Oshay 8 ժամ առաջ
Presently, I'm confused.
eric pohlman
eric pohlman 8 ժամ առաջ
it is not entirely accurate to say, "Nothing, not even information can travel faster than light." the speed of light is simply a mathematical constant of which to judge other celestial objects. Gravity reacts quicker than light. The universe expanded faster than light..................blah.
bizarre life
bizarre life 8 ժամ առաջ
Time is illusion of observers.
Trashman 8 ժամ առաջ
While this is all interesting, I think that while your 'getting off' on seeing the planet from different directions and points of view and stating: "Time is different!" In fact, everyone seeing the planet is seeing the photons NOW, regardless of where their NOW is... For all observers, the planet has moved on, isn't where they are seeing it - they are seeing the photons reflected by the planet, not the planet itself. It's the same as the black hole problem I have: If black holes are infinitely dense and time stops at them - how can we still see them? Wouldn't they simply 'wink' out of existence? Stuck somewhere in the past if time has stopped for them? I just feel there's something else going on - we just haven't noticed it yet, haven't quantified it. Just as because a photon travels at the speed of light it is infinitely dense - which means it can't go anywhere or forms a black hole... but somehow manages to travel to the end of the universe instantly because time doesn't exist for it, yet it takes 8 minutes for light to get from the sun to us... I understand how 'not getting it' means I do get quantum physics? But I just feel, like many others, that there's just other 'stuff' to the universe we just haven't got a clue how to discover, never mind discover - and with us only knowing what 6ish percent of the universe actually is? I feel quietly confident in my belief. After all, if we discover another 6ish percent of the universe? It could be just as complex as the known 6ish percent - and we've still got 88ish percent to go...
Anik Samiur Rahman
Anik Samiur Rahman 8 ժամ առաջ
Hi Professor Matt, I have a childish question. QED describes particles as an excitation of the respective field. But what is a field? We say the field is the property of space - like say the presence of a magnet modifies its surrounding space in a way that pushes or pulls other magnets. But in this description, a field just becomes a mathematical quark - A few scribbles on some piece of paper. Definitely real particles can't be the vibration of a few scribbles made of ink. Then what is a field? If it's actually a real entity then what kind of entity is that?
Joseph K
Joseph K 9 ժամ առաջ
So I was right to be the only one who raised their hand when a substitute teacher asked the class as to who believes in fate, back in 4th standard. The future or to be precise ...all my possible futures already exists. I can shift my movement and choose any particular one to be my experience. Haha.
Ross 9 ժամ առաջ
I laughed out loud at the end. I already had the notion that maybe the observation of space-time gave us a single slice. And when i say observable I give that job to the universe and everything in it. So when Matt mentioned the quantum physics gives us a possible multiversal future then that gives us our singular past. I know this is wrong, but I love discovering the next steps as educators like Matt, Neil, Brian, and many more give us amatuer scientist more digestible info.
And L
And L 9 ժամ առաջ
Man this stuff is mind blowing. No amount of fictions can come close to how weird the universe really is.
eliptats 9 ժամ առաջ
I love watching this channel late at night while playing video games, so comfy
Reece Milan
Reece Milan 9 ժամ առաջ
I mean we see the past in stars
seeni gzty
seeni gzty 10 ժամ առաջ
Me: I should really sleep Also me at 4 AM: Do the past and future exist?
Oliver van der Togt
Oliver van der Togt 10 ժամ առաջ
I don't see why it is a problem that for some processes time passes slower than others.
Steve Martin
Steve Martin 10 ժամ առաջ
That metaphor of 'time as a vinyl record' is brilliant. Sounds very similar to how I try to understand the Australian aboriginal concept of 'dream time', or the cyclical versions of time by some religious traditions. After that, my beer started kicking in, and I retreated into the present. Upvoted, but will continue looking for a metaphor a 6 year old could understand. 🤣
cj nav
cj nav 10 ժամ առաջ
Do the Past and Future Exist? Only now with the sun and moon counting "time" for us. But in eternity - everything just "is".... as God just "is". Hence Jesus giving the answer of who He is: I AM (I AM = Eternal existance) Soon, we will step out of time and into what already is: ETERNITY Where will you spend Eternity? Accept Jesus as the death sacrafice for your evil deeds in this lifetime, to spend Eternity in His presense - ON THIS EARTH after He re-creates 😁
seeni gzty
seeni gzty 10 ժամ առաջ
events kind of ceases to be a thing in a way, it's not incoherent to imagine it. You're free to imagine all kinds of things that make no sense whatsoever out of the "illusory" chain
Alexander Rossi
Alexander Rossi 10 ժամ առաջ
This turned me brains to non-temporal goo
stoNkez 10 ժամ առաջ
In case anyone is in any doubt as to the answer to the question posed as the title of this upload, the answer was figured out several centuries ago by eastern gurus, and that is that the answer is a resounding negative. They figured it out and tried to raise awareness of the reasonably obvious fact about the nature of existence and here we are all this time later & people still waste their time discussing it. 😩
Miah Minhazuddin
Miah Minhazuddin 11 ժամ առաջ
I liked this video. According to Islam, time is also a creation. there is a section named "The journey of al-Isra' and al-Mi'raj" if anyone is interested can be looked into it. it will open our minds regarding space even more.
Infinite Monkey
Infinite Monkey 11 ժամ առաջ
I lol'd at the Nokia 3310 predating Galileo XD
ReverendRV 11 ժամ առաջ
The Past exists in the Present; the light from a distant Star is from our Past, not from our Present. The Star actually exists in the Future, possibly millions of years older than it looks to us; and it will have to wait millions of years in the Future to see the light of our day. The Past, the Present and the Future exist at the same Space-Time...
Aaron Phillips
Aaron Phillips 11 ժամ առաջ
Does this explain why if a traveler were to travel at near speed of light around a supermassive black hole for about 10 years they're relative time would put them well into the future when they come back home? Because their light cone had them aligned with observer's light cone in the far future?
James Brooks
James Brooks 12 ժամ առաջ
Time is a human invention. Just our way of using one natural process, say the oscillations of Cesium atoms, to measure another natural process, say the orbit of the moon around the Earth. We might posit a hypothetical 'instant' where everything, everywhere is at a particular point in their progression through entropy. It's just that it's fiendishly difficult to model because of the speed of light and the expansion of the universe.
Mash Rien
Mash Rien 12 ժամ առաջ
One big problem I have with all time existing and we just experience individual slices, moving from one 'frame' to the next, is that implies some minimum 'planck time'.. Or in other words, that the universe has an FPS, or "frame time" If planck time exists, are we really saying the photon doesn't move between those two planck points, it teleports?- Meaning *_if_* we could ever see a shorter time scale, between departure and arrival, the photon doesn't exist? And when does it teleport?.. At the end of the current planck time, or the beginning of the next--the tick, or the tock, if you will.
Ernie Franks
Ernie Franks 13 ժամ առաջ
It is even in the mechanics of the Multiverse! Our Verse, the Universe. Being the first of a Multiverse! In the world of numbers! A Universe of numbers! Like reading different books, of a Library! All different pages, of different books and types of books! The Genre's of books! Ours is just the creation of stories! Aliens, God, Mythical, everything! Like Scifi, Religion, Fantasy and everything in the genre's of books!
Star Light
Star Light 13 ժամ առաջ
My light clone is presently unable to grasp this concept. Will need to watch this one more time. As my past self is catching up to my future self. Thank you the visuals are extremely helpful.
Paul G Rudenberg
Paul G Rudenberg 13 ժամ առաջ
How did you talk about spacetime and lightcones without mentioning Minkowski?
Ernie Franks
Ernie Franks 13 ժամ առաջ
It's like the pages of a book! Just because you are reading the introduction, of a book . Doesn't mean the last pages, of the book. Is not playing out! All is going at the same time, just our past, present and future. Are on a different page!
Kurt Fitzner
Kurt Fitzner 14 ժամ առաջ
Delay between an action and that actions causality wave reaching me is just causal latency. Causal latency is not evidence for the existence of a separate past/present/future any more than audio latency from the speed of sound is. You can do tricks with sound that play with the order a sound is heard between multiple objects moving at different speeds relative to each other that mimic causality tricks where you can't agree the order actions occur in. In sound's case , the existence of a side-channel (light) that is a much faster conveyor of information makes it clear which "actually" happen first. With light this isn't the case, there is no faster channel, the speed of light (time) is all we have at the moment, but that doesn't mean that causal delays are implying weirdness with time or implying the existence of a past or future any more than our existence implies the universe is trying to create a way to observe itself. Both are logical fallacies from taking thought experiments out of context and way beyond left field.
Petitio Principii
Petitio Principii 14 ժամ առաջ
To say that the past is "erased" to describe "presentism" is kind really of implying an "eternalist background" POV where there's really this eternal "plane" that "erases" somehow the past, or though with the present "travels," with a lot of empty "time space" behind and ahead, versus just the "now"/change only existing, without this kind of "substrate" inferred from our "mapping" of events. Past was never "erased" literally like in "Langoliers," or as in a tape that's erased just after it goes past the VCR head. You can't go back to "empty" space with nothing or ahead to a future where "nothing" reached yet. To "go back in time" would literally imply in moving everything back to the states they were before, and it wouldn't even be 100% literal unless you'd really cheat on entropy and whatnot, somehow.
Petitio Principii
Petitio Principii 15 ժամ առաջ
These notions of time being an "illusion" of a determined/static extant set of events seem to implicitly assume that there's some sort of immaterial soul that "flows" through the "block/tape universe" having this magical immaterial illusion. Or who watches a projection of the "illusion" movie, again, implying a real, in a non-illusory time, and a bunch of other weird stuff. Not to mention the probably unfalsifiable "present"/eternal existence of all past and future from determinism alone. But I think that since causation as a chain of events kind of ceases to be a thing in a way, it's not incoherent to imagine it. You're free to imagine all kinds of things that make no sense whatsoever out of the "illusory" chain of temporal causation, maybe we just watch the movie-illusion recorded by a god movie-maker or something, there's no point in trying to even prove it as it would be way beyond anything we could reach with scientific instruments or even reasoning.
Bob Sapsford
Bob Sapsford 15 ժամ առաջ
Distorted logic can prove anything is possible, its just that the results are distorted. Example, what has the speed of light have to do with the present, wherever anything is happening in the universe that is what is happening now, the fact that we dont see it for maybe millions of years doesn't mean it happened at a different time.
Petitio Principii
Petitio Principii 15 ժամ առաջ
This "playing of time in sequence" of the block time kind of implies "another time," a real time, that "plays" the events that are predetermined/"recorded."
GG Fuego
GG Fuego 15 ժամ առաջ
Aye guess what? Time only exists in your head.
GG Fuego
GG Fuego 15 ժամ առաջ
Is this f'ing cat alive or dead? I need to eat it's brains.
Laser Hobbyist
Laser Hobbyist 15 ժամ առաջ
Nope, not watching this guy, condescending boop.
Optima-Nova 16 ժամ առաջ
Now? As in right meow? Meow or never? Is it meow now?
Simon Bean
Simon Bean 16 ժամ առաջ
Depends when you're looking from
Ken Clinton
Ken Clinton 16 ժամ առաջ
2015 Newton portal confirmed.
John B
John B 16 ժամ առաջ
Past and future are just a phenomena of a "Story" in the form of a 'Holographic Simulation', Displayed in "The Processing System of LIFE". ALL the Stories are stored in the form of "Program Books" within the Permanent Libraries of "The Processing System of LIFE". Learn HOW to access "The Processing System of LIFE", so you can explore these 'Program Books' for yourselves.
DigitalDan 17 ժամ առաջ
Such a fuss about solipsism LOL solipsism is the only intellectually honest perspective. Any other perspective requires various leaps of blind faith. While there may be truth beyond solipsism, just wanting it to be so doesn't make it so. It's humorous that solipsism is so obvious that folks refuse to take it seriously.
Rasmus Emil Rattanamungkut Zeitsberg
Rasmus Emil Rattanamungkut Zeitsberg 17 ժամ առաջ
The past and the future obviously exists, this video is dumb, and they are just trying to sound smart because they just want views and for people to think they are smart, but they aren’t smart, they are dumb and 100% wrong.
Michael Lake
Michael Lake 17 ժամ առաջ
If I remember a "now" before this "now," was the the now then a "was" or an "is"? Oh, God, here I am now again! Is this a "was" that was a "will be" or an "is" that wasn't the last time I looked?
Philosophy Frog
Philosophy Frog 17 ժամ առաջ
Millennials... In my day we had no future. Also on a more serious note yes, there's a future and there's a past demonstrated through light. But you can't travel to either point, physics just won't allow it, that will just have to stay in the realm of science fiction.
Li Dara
Li Dara 17 ժամ առաջ
Can anyone see the Present objects? If you can not see the Present objects, how can you see the Future objects? Everything we are seeing is the Past thing. Every light particle that hit our eyes came from somewhere in the Past (it could be super short Past, but it was the Past). Sometimes Physicians and Scientists are wrong, because they stick themselves with the light particle things. They should study about the Mind too, the mind is something and it is real. The mind sees everything ( not the cell of our body parts sees thing). The mind can see everything in the Past, Present, Future. The mind can see without rely on any light particles.
equalism 42
equalism 42 17 ժամ առաջ
The fact it would not break any laws of physics to go aboard a space ship, fly it towards a black hole so as to sling shot around it and reach the speed of light and survive.....prove dimensions in time have an end.....and we know from the expansion of the u universe time had a beginning....and this would certainly prove we have the knowledge to travel into the future already......the fact we do not yet know how to travel into the past yet does not mean it is impossible it just means we do not yet know how..... So if we could travel into the future a week or two and then return would that conclude all moments in time co-exist..... But remeber the space ship traveling up to the speed of light and an infinite of earth time passing......indicating our current time dimension ending...without time to separate moments and events, would not all that ever was exist simultaneously ?
Grim Reefer
Grim Reefer 17 ժամ առաջ
Somebody needs to work on their English. It is not "do" it is "does". Example: Does the past and future exist? Sounds better yes. The way you phrased your sentence, it sounded like you grew up in the hood.
NaegaNova 17 ժամ առաջ
That light cone bit doesn't make sense. What you see coming from those stars is not your future, it is their past. Someone traveling to a star would see the stars history before you but that does not put them in your future. They are not where they are when you see their light. You're seeing them where they once were. Seems like everyone talking about relativity like to swap out objective reality with subjective reality. The twin paradox for an example even without acceleration is not a paradox. Despite your inability to know which one is traveling near the speed of light by observation. Only one of two is actually exerting the energy necessary to travel at that speed. The one exerting the energy is the one traveling near light speed. Thus there is no paradox who will experience the time dilation.
West House
West House 18 ժամ առաջ
Is our present the same present for life light years away.
Marc T.
Marc T. 18 ժամ առաջ
Yes based ona tangible perspective to measure by our understanding of current mathematics...
Terry Wheelock
Terry Wheelock 18 ժամ առաջ
Time doesn't exist ....... it is an arbitrary relative measurement of existence created by man. Past, Present, Future are NOT Things. The universe is INFINITE so the "THINGS" in the universe have always existed, exist now, and will always exist. The only question is if they will exist in the state they are in! The past exists and is set, the future is not set. Universal Relative Perceptional Time is universal throughout the infinite universe, but you relatively experience it. Time is not a dimension it is a marker to calculate STATIC (snapshot) physics. Which all other is DYNAMIC (perpetual) physics. He is not talking actual physics he is talking "perceptual" (by word play).
jazzlehazzle 19 ժամ առաջ
How about the idea that solypsism and materialsim are mutually-compatible semantics each simply describing that this block universe exists with you as part of it, and is the only universe, period, which always is, exactly and only, "this." -- Which includes everything. -- Absent any observer, it is just all quanta, and if some of that quanta should be an observer, the nature of that observer determines how one perceives the rest of the quanta, and what of it one can. But the totality of quanta always is, regardless of any observer w/in itself or not. -- The block always is, and behaves in all possible ways simultaneously. An observer perceives select aspects only, but is always one part of its whole. -- Maybe.
moicus29 19 ժամ առաջ
Do we know anymore about axions and dark energy? Are there still stars that seem to be older than the universe?
kettlefever 19 ժամ առաջ
Yer, thought so or do I
Jangler333 19 ժամ առաջ
you are building a premise of the multiverse. and yet you cant prove I evolved from a single celled something that crawled out of the ocean 4 billion years ago.
Kevin Bell
Kevin Bell 19 ժամ առաջ
INTUITION and PREMONITION prove the FUTURE does exists, in those fleeting moments the mind ecscapes the present moment and is teleported to a "slice(s)" of time far ahead. HOW? And WHY? is the mystery - I believe the mind can supersede quantum boundaries but again HOW???
Armageist 19 ժամ առաջ
Huh...just because the light of something occurring hasn't reached us yet doesn't mean it didn't happen in the "now". The very fact that it takes a determinate amount of time to reach us, for us to observe it means we can trace it back to when it actually occurred at that point of time which was the "now" for everyone in the universe at that point in time. Why do you guys (Physicists) base reality strictly on observation? It sounds stupid, but think about it. I can't observe what 6 billion people are doing across the world but we know they're doing it whether their "light" reaches us instantaneously or not. There are Aliens out there DOING THINGS RIGHT NOW whether it takes a millions years for their stars light to get to us or a billions years. If they travel to a star that explodes right now, and get there as it explodes, but we don't see it until a hundreds years from now, it doesn't mean it didn't happen. And it's not relative to us or them, it's relative to things occurring. Sure it might be compressed more for tgrm and stretched out for us, but there's still an overall picture if everything occurring in space/time "outside the box" like your picture showed. Such a peculiar notion of existence. And then you just allow these quantum hocus pocus mystics to run free with their snake oil bullshit of "The universe only exists when we observe it and will it to be". We haven't been around for 99.99% of the time the Universe existed, yet we know it did. No one was there to "OBSERVE" the universe into existence. And that's when you allow these mystics to bring Goooood into the equation.
Dane Felde
Dane Felde 19 ժամ առաջ
Maybe all time is present. Where the past, present, and future are happening at the same time.
Tony Texas
Tony Texas 19 ժամ առաջ
I took 4 tabs of acid and an 8th of shrooms and can confirm nothing exits
Dang Le
Dang Le 19 ժամ առաջ
"This episode is sponsored personally by Christopher Nolan"
Dominic Zygadlo
Dominic Zygadlo 20 ժամ առաջ
Could someone fact check this for me? My understanding is that the present is a static moment across the universe, however distant objects and events only appear in our perception of the present once their light waves reach Earth for us to observe. This means all events can only be observed in the future. Assuming that the speed of light is constant and space expansion could potentially exceed the speed of light, does this mean that there are events that have happened in our perception of the past that we will never be able to observe and therefore never determine as having occurred? This would also apply to present and future events given that the space expansion between the location of said event and Earth exceeds the speed of light. I may have explained the notion of the observable universe, but I would appreciate some input on this.
the artist formally known as craig lastname
the artist formally known as craig lastname 20 ժամ առաջ
"Present is the time including all times Each second is eternity as eternity is now And now is forever..."
the artist formally known as craig lastname
the artist formally known as craig lastname 20 ժամ առաջ
The past exists, I saw it yesterday.
Lavalambtron 9 ժամ առաջ
No you saw it today.
William Lindsey
William Lindsey 20 ժամ առաջ
Matt, you said nothing, not even information, can move faster than the speed of light. What about entangled particles? Einstein called it "spooky action at a distance." Isn't that information sharing basically infinitely faster than light?
Cod4 Wii
Cod4 Wii 20 ժամ առաջ
"Nothing exists" -existential nihilism
Siddiqur Rahman
Siddiqur Rahman 20 ժամ առաջ
I didn't understand even a single thing he said.
Dj Luminol
Dj Luminol 20 ժամ առաջ
This is so fkn creepy.
Æ W 20 ժամ առաջ
We could also approach an instant in time as being infinite in duration. Morimoto et. al. "Superluminal Motion-Assisted 4-Dimensional Light-in-Flight Imaging" have shown superluminal motion can be captured but how far can we slice up time. An infinite amount of information flows through a hypothetical imaging system as dt approaches zero even though no work exists at those scales with respect to its reference frame. Therefore how do we really construct a ruler for time.
Ss YoungOG
Ss YoungOG 20 ժամ առաջ
If the past doesn’t exist we wouldn’t be able to record videos or take I bugging?
Chris Markham
Chris Markham 20 ժամ առաջ
I get it! Nope. Wait. I had it a moment ago, nowI have no idea. You lost me. I think I could have followed this some time ago, but now I have no hope of getting it. I’ll rewind it and play it again.
Luis M
Luis M 20 ժամ առաջ
Civilization collapse due to a collapse in birth rates has a far higher probability of being a filter than climate change or nuclear war. You guys should really get into geopolitics.
Luis M
Luis M 8 ժամ առաջ
@Lavalambtron the developed world and the developing world is not the same. The developed world is experiencing population collapse, we’re the ones who invent things, we’re the ones who feed the world. The developing world is experiencing a population explosion. We are not the same.
Lavalambtron 9 ժամ առաջ
8 billion humans and rising, I think that is the least of our problems...
MrSpiritchild 21 ժամ առաջ
It seems more to me that you are expressing the perception of time rather then the reality of time. Reality itself is an outward spiral with some fixed points, and each of us on our own individual plane of existence (and time), and the civilizational plane of existence (and time) are also streaking down this spiraling road, occasionally creating intersecting experiences that give us all unique perspectives. Time itself is more then likely what you perceive to be the instance of now, moving down the road of reality, creating the now from what could be, and leaving behind it a tapestry of what was.
sashija satheesh
sashija satheesh 21 ժամ առաջ
The reason why i clicked this video is to know if time travel between two different planes exist or not. I still have no clue. Help me.....please....
Left Blank
Left Blank 21 ժամ առաջ
To help understand how space time works if you’re sitting still on a chair and an alien is sitting still in a chair 60 million light years away , the. Your time is the same .if the alien gets up and runs off in a direction and you measured each other’s time relative to the first recording , you’d be in different time by a a few hundred years. I... think lol well that’s how I interpreted time from this channel. I believe in yeh many worlds interpretation so that means there are multiple time lines and possibilities for your life there are infinite possible outcomes for your life . I think that each possible outcome is determined . A bit like a movie with multiple endings but they are determined already for you .
D. Lawrence
D. Lawrence 21 ժամ առաջ
The Past and the Future are Concepts, It's Always Now. Visiting the past or future would require being able to jump to a different universe, but even the Multi-Verse is a concept. Sadly this is the only Verse we have and it's always Now. Let's say time travel is possible, you would need Infinite Energy, mainly because you would have to alter time as it were in the entire Universe, and if there were such a thing as the past or future, logic dictates that you can't just affect time in one small area of the universe, otherwise you would disrupt and create a tear in space time with unknown implications. Just a few of my thoughts on the subject. Take Care All & Stay Safe.
juan-k sporty
juan-k sporty 21 ժամ առաջ
Where is tomorrow??
God of the Eternal light.
God of the Eternal light. 21 ժամ առաջ
Who believes that the present is a flicker of time that keeps moving forward?
Juleen Dickson
Juleen Dickson 21 ժամ առաջ
So can physics students used this explanation to get out of turning in their homework on time?
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