Do the Past and Future Exist?

13 Th10, 2020
564 776 lượt xem

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
Graphics by Leonardo Scholzer, Yago Ballarini, & Pedro Osinski
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  • This Guy's head is larger than rest of this body.

    Kenneth JensenKenneth Jensen21 phút trước
  • The past is a need for a future but not for the present

    Terry CarrTerry Carr33 phút trước
  • the world is just a continuing moment. there is no universal past or future.

    S GonzalezS Gonzalez41 phút trước
  • Free will does not exist.

    s ws w48 phút trước
  • it's the cosmic speed limit I think the biggest obstruction in space.

    xvc00xvc00Giờ trước
  • What divides the past from the future is the present moment. It is the only true reality. Everything else is an illusion.

    Always AscendingAlways AscendingGiờ trước
  • "That's a topic for another.. well.. time" 😂

    HelgaliHelgaliGiờ trước
  • The Answer is Yes. We may be living in an Oscillating Universe.

    Chris The Science GuyChris The Science GuyGiờ trước
  • If time is only a byproduct of the evolution of space, energy, and matter, I would say that presentism is correct. Just because you observe light from a past event does not mean that event is currently happening, the traveling light is its own event.

    Raptor302Raptor302Giờ trước
  • While I think an eternalist spacetime is the one that makes the most sense, I wonder how to explain change and motion in a block universe. A block universe would make sense if it had a maximal entropy, i.e. if it was a uniform and frozen soup of particles. But, what explains the emergence of structure and motion in a block universe, or, said differently, how to account for Aristotle's prime mover paradox in a block Universe (or block reality)?

    R. L. StineR. L. StineGiờ trước
  • this is one of the best channels on youtube.

    exoendoexoendoGiờ trước
  • what is the container of the universe it must be the whatever the is

    stefan stossstefan stoss2 giờ trước
  • I am here to hear, and an old fella I work with calls his blue beanie colour green. Anyway ciao for now

    White and Black ZebraWhite and Black Zebra2 giờ trước
  • Maaf ya allah hamba liat ini.

    KISS LOVE X.X.XKISS LOVE X.X.X3 giờ trước
  • The first mistake is thinking that the speed of light is a limit, it is not it is a constant.

    David KingDavid King4 giờ trước
  • My comments as a physicist: The first 12 minutes are about the best concise explanation of this important question, "Do the past and future exist?" that I have yet seen. Great job! At about minute 12, he veers off into more of a one-sided conclusion of the implications of quantum mechanics on the presentism/eternalism question. For those interested in learning more, Lee Smolin and Fotini Markopoulou are examples of theoretical physicists who have written extensively on how to save presentism without denying external reality or postulating a multiverse. On the other hand, it's hard to throw a rock without hitting a theoretical physicist who is a complete eternalist and denies that the passage of time is anything more an illusion (Einstein was one of those). Personally, I'm one of those lonely presentists, so I am very happy to see a fairly even-handed treatment of this topic.

    MMHuddlestonMMHuddleston4 giờ trước
  • 3310 = Time travel confirmed.

    SMiRK the ALiENSMiRK the ALiEN4 giờ trước
  • hole inventions are invented after they came to INDIA

    Avinash SAvinash S4 giờ trước
  • Lalitha sahara nama have your answers

    Avinash SAvinash S4 giờ trước
  • "No information can travel faster than light" Tell that to quantum entangled particles.

    John IrbyJohn Irby5 giờ trước
  • Anyone who happens to read this, look up the Victor Goddard story. It’s the only case of real time travel that I believe is true and actually happened. I think true time travel would only be possible if you stepped outside of space-time/the universe, and then jumped back into space-time/the universe at a different point.

    Yubi K.Yubi K.5 giờ trước
  • Since when is time the third dimension?

    ET HimselfET Himself5 giờ trước
  • as always, all meaningful questions are actually the same question

    Álvaro GalianaÁlvaro Galiana5 giờ trước
  • I think an interesting question is: does time pass if nothing moves? (I know this is impossible, vacuum fluctuation and all, but just humor me here) I would argue that no, time would stop if nothing moved. Thus time does not precede motion, rather motion creates (the perception of) time. Also considering that entropy, basically a statistical phenomenon in the macroscopic world, is responsible for time's arrow - are past, present and future or even the block universe useful concepts when talking, for example, about why time slows down in the vicinity of a massive object?

    Alex BAlex B5 giờ trước
  • The answer is no on a personal level. Since we, the human conscious, can only experience the now, all of the talk of past and future is a reflection of the now that can only be reflected upon in the writings of the past. The uniqueness of the now for each of us is how much we perceive the musings of the past and future in our current perception of the now and the now is an ever changing experience that we call our life. the universe is happening around us and we are dots in that movement observing and experiencing it. all the extra math is just us pondering the future and the past.

    Jason WratislawJason Wratislaw5 giờ trước
  • Stupid! Very sad and disappointing that some people still buy into that fake, spinning ball, satanic deception, anti scriptural, Luciferian, Pagan globe hoax!!! Flat earth is biblical FACT and common sense, they need to stop denying the 200+ scriptures that prove this, repent and WAKE UP! They are bible denying, truth rejecting, uneducated, ignorant, globetard and a fools. GOD created the true, biblical flat earth 6000 yrs ago as the scriptures CLEARLY teach!!! Wake up!

    Arizona personArizona person5 giờ trước
  • The brain is a quantum computer, converts quantum data into relative data. Us! All our human history since time is encoded in us. When on DMT our relative brain shuts down and our quantum brain shows us that realm. When you die your relative learning mind goes into death and your quantum memory goes into the system, you are just a sentinel to gather information.

    Uroborus ZeroUroborus Zero6 giờ trước
  • "Elements of the past and the future combining to make something not quite as good as either..." Ten points to the fastest person to recognize the reference.

    LazuotutLazuotut7 giờ trước
  • How would mass effect this?

    Ryan AutyRyan Auty7 giờ trước
    • Guess your angle would be looking backwards from your original now present

      Ryan AutyRyan Auty7 giờ trước
  • Sir, I find your lack of tense disturbing.

    EricEric7 giờ trước
  • How many singularities can one black hole to hold? And if two blackhole are merging, are there two singularities inside at some point? Or, can singularity travel faster than light to join other singularity?

    amaraojijiamaraojiji7 giờ trước
  • The only thing you have wrong is the apple stays whole. Everything stays together all the time.

    Mary AkinMary Akin7 giờ trước
  • Me while watching: hmmm Me after watching: hmmm..lemme rewind i havent understand anything lol

    Custodio AbelaCustodio Abela8 giờ trước
  • NO! there is only now ! ??? $$$

    Aaron KingAaron King9 giờ trước
  • who just started spinning around their chair halfway through this talk? just me.. fair enough xd 8:40

    INXINX9 giờ trước
  • Lies

    Matthew OrlandoMatthew Orlando9 giờ trước
  • Can’t we relate time to entropy? As entropy increases, time flows in the same direction. Since entropy can never decrease, we cannot go back in time as well.

    Karan PunjabiKaran Punjabi9 giờ trước
  • Ur cousin sending u a gift frm across the planet which will arrive to u after a week.... So shes in the future n the info what the present is, will be available to u after a week(in ur future) So in ur method of discribing time... ur cousin lives in the future !!

    Challenge- 1M Subscribers for 1 VideoChallenge- 1M Subscribers for 1 Video9 giờ trước
  • That which is - has already been, And what is to be - has already been. Quote: King Solomon. NKJV

    OzicellOzicell10 giờ trước
  • As Finite as each Moment is - so it is also Infinite! There is NO 'Final Frontier'!

    OzicellOzicell10 giờ trước
  • All probable past and all probable futures exists simultaneously , all variations of every event are real ,we only experience the byproduct of collective wave collapse as our reality ,it's like choosing one road from multiple roads that are real ,with only that road you choose being part of your particular reality and with all other choices representing alternate but real outcomes that exists simultaneously!" Trippy , I know but it's just my theory!" And to add further craziness ,if we found a way to go back in time we would find ourselves in a parallel reality that diverged the moment we arrived with all future events not subject to the grandfather paradox !"

    Robert AlstonRobert Alston10 giờ trước
  • I like beef jerky

    Ordinary JoeOrdinary Joe10 giờ trước
  • Present is not present but both future and past. This sentence is both future and fast. Who read it its past who didn't its future.

    forhad karimforhad karim10 giờ trước
  • Why must something must be observable to us to be reality? The universe must surely exist outside of our personal 'light cone'. It sounds like he is talking more about perception than reality.

    Gordon .DavisGordon .Davis11 giờ trước
  • If the universe is block time, then that couple hundred milisecond state we call "now" would actually be riding the smear of the body on time's wavefront. That gives weight to the conscious as being separate from the mind does it not? The old mind-brain problem?

    Daniel WhitakerDaniel Whitaker12 giờ trước
  • "Hey vsauce. Michael he-" Oh wait🤦

    Clxs DvGhxsClxs DvGhxs12 giờ trước
  • I think that the path between past and future are like a long groove on a long play vinyl LP. Also, what we perceive as "now" is rather like a diamond stylus needle being dragged along that groove. Once we pass a particular spot in the groove, we can never go back and revisit it, also we have no way of jumping a head to future section of the groove. What is it that is dragging the needle along the groove? Probably the expansion of the universe itself.

    Gustav BabicGustav Babic12 giờ trước
  • Cows are nice, I like purple.

    Jake CutterJake Cutter12 giờ trước
  • Once I become a 4 or 5th dimensional being I will try my best to come back and leave signs of the truth of this universe.

    FireFlyFireFly12 giờ trước
  • Nasa never points the camera towards the space light glory lol embarrassing lol

    Mr YusufMr Yusuf12 giờ trước
  • You have a big head

    Jeffy BeanJeffy Bean13 giờ trước
  • How many dimensions does Imaginary time have?

    Roddy RichRoddy Rich13 giờ trước
  • Play Universe Sandbox 2 or do another live stream sometime.

    Roddy RichRoddy Rich13 giờ trước
  • This video is blowing up in views . All the other previews videos have an average of 250k views. @PBS Space Time.

    Roddy RichRoddy Rich13 giờ trước
  • For those Who's English is not good will have difficulty toh understand this all Like me Please add on more language Hindi If possible

    AV GamingAV Gaming13 giờ trước
  • Some rambling here. There is a difference between what is the present universe as it moves through time and what our perception of the present universe is. A lot of what you say in this video is about or perception of time, how that perception can be changed, how others perceive it differently, none of that is what the state of the present universe is at any specific point in time. Now perception is fine, because we see and fee light 8 minutes after it leaves the sun now, it affects us now and not 8 minutes ago, the rain fell seconds ago but it falls on us right now, a sound was created by a train a second ago but gets to us now to warn us of its presence. In fact our brains have evolved to put together the actions of the out side world for us. Without memory for instance we would have no clue if something is moving towards us or away from us, we would not remember where the object was at any time before. There are some people that have a disease that messes up their ability to remember even events in the very close past and they have a lot of trouble perceiving motion. So our perception of now is based on our sensory organs, yet more is going on in our personal now than those senses can perceive and ever keep track of. Now time is a by product of change at a level beyond our perception, at a atomic level, at an energy state level, at the stuff that is the basis of everything level, and its very little state of constant change. I dont think that time is an actual thing in itself, only the existence of a new state. Its hard for me to explain this in a comment section so I apologize if I sounding a little dense. This should not be confused with the rate of change between one item or another, a stone may remain the same as a block of ice melts, that does not mean the ice is moving faster through time, just that some action is happening faster. The core existance of the rock and of the ice/water change at a similar rate. We talk about the half life of a radio active element, in some ways thats closer to what I mean, but think instead about the half life of the stuff that is the basic building block of the universe, and as that decays its change state is experienced as time. If you freeze time as in one of the examples of the apple moving through time, you would see and feel nothing, without change the necessary elements that allow us to feel an objects affect or see it do not exist, light bouncing off an object so we can see it only happens when there is a state of change, Gravity exists only if there is a state of change so it can pull on us. I wonder if even the Universe only exists if there is a state of change? how would you know if the Universe was in complete stasis. I mean it would be there but how would you actually know that, without change it cant interact with anything, or maybe it does not exist at all at that point without that change in state. Furthermore, based on the mass, gravity, or speed of a thing time moves differently. An object closer to the earth will move slower in time, one far up in the sky further from the center of earths mass will move quicker through time. But they are actually moving at the same rate of change in time, but their time fields are different. Time is relative. The same for speed and how it affects time.

    Scott PerryScott Perry14 giờ trước
  • I have been trying to figure out how to understand time as a dimension since it is so often represented spatially in graphs. I have been thinking about it like every x, y, and z coordinate is a complex number with i being time but would that mean there are 3 i's or just 1? So something like my location is [6+3i, 5+3i, 8+4i] or something. Now that I think about it maybe i would instead be a function of your relative closeness to the speed of light... I am taking brilliant's math corses to get ready for the physics one.

    nocturnhabeonocturnhabeo14 giờ trước
  • Excellent.

    k 1k 114 giờ trước
  • What if the universe is just a giant particle collider and the present is the collision of the past universe with the future universe creating measurable light. So if you took this literally it would be particles that only move forward in time colliding with particles that only move backwards in time or sub light speed particles and tachyons.

    Daniel LehmanDaniel Lehman14 giờ trước
  • I’m dizzy

    T.O.T.O.15 giờ trước
  • Relativity only works when you assume the observer is not omnipotent. An omnipotent observer would see a deterministic universe through past, present, and future.

    424215 giờ trước
  • Time only ever moves forward. Is there a present? Do you STEM majors understand why we need philosophy, now? The world isn't just facts and measurements. It's combined with interpretation and judgments

    Alcaeus89Alcaeus8915 giờ trước
    • 5:28 This idea, like all scientific ones, are held together by logic. You know where logic comes from? A philosopher named Socrates. You're welcome. Enjoy your Principia. I'll be reading my new translation of the Republic

      Alcaeus89Alcaeus8915 giờ trước
  • >"Do the Past and Future Exist?" Multiple Pasts & multiple Futures do exist; in fact, all versions of Pasts and all versions of Futures do exist at once...

    stefanbanevstefanbanev15 giờ trước
  • The way I understood relativity is if that time is relative it objectively cannot exist and that our brains cannot process the information in a manner that is outside of the dimension in which we inhabit (without math and things). I think that is what you may have confirmed but one can never just assume. ^ _ ^

    Cara CouchCara Couch16 giờ trước
  • I'm still very confused about what was wrong with the notion that only "now" exists. It doesn't need to be a consistent "now" for all observers. Each observer can be having their own subjective experience based on their position, velocity, mass, and other surroundings that might affect how they observe the objects around them as well as altering the actual rate of causality (time dilation). I don't see why that doesn't work just fine without any over complication of the situation. It seems like it's just difficult for us to conceptualize that the universe doesn't have a dimension that remembers the past nor predicts the future, because we DO those things.. however, we do those things using structures in our mind made of matter in 3d space. I don't see any reason to believe that the universe has an actual time dimension (other than the one that is melded into space which alters the rate of causality [aka "time" dilation]). Edit: After skimming through the areas where you touch upon presentism, I don't actually see you explain why there's any issue with it.. other than saying that it's impossible to define what the "present" is. However, I don't really get why that's an issue. We can't define an agreed upon "now" for all observers, because observers experience different events and information from different perspectives and even at different rates, depending on how dilated the rate of causality is around them. I think the issue is that we're trying to define the perception of time as relative to an observer, like we would with objects they observe in space. However, experiencing different information about different objects from different vantage points is a consequence of being in different relative positions and velocities. It's nothing to do with time itself being relative to anything. In fact, it seems to me that time existing at all actually breaks the natural relative nature of the universe. The velocity and position of objects only matters in relation to other objects. There is no fundamental universe aether to move relative to. Why should events be any different? Events only matter when objects are near other objects to interact with. However, time allows an object to be meaningfully relative to itself... or to a "time aether". There doesn't seem to be a need for an actual past or future to be a real meaningful thing in order for our universe to function. So, I don't see why we should lean towards believing past and future exist.

    EluemEluem16 giờ trước
  • The past and the future was here a moment ago. But that was then, and this is now.

    BRUCE PhillipBRUCE Phillip16 giờ trước
  • Venus and earth? That implies the asteroids and how we can potentially find the building blocks of likeness in rocks out there in near space. If life is here, it should be near.

    Patrick HPatrick H17 giờ trước
  • No amount of marketing is getting this one across the table

    BorisBoris17 giờ trước
  • I haven't contributed to patreon only because nobody's observed me doing it yet. So please, observer me with some disposable income.

    zachariah adamszachariah adams19 giờ trước
  • You make the classic mistake, which Schrödinger detested, of assuming that quantum theory can be extended to apply to the macroscopic, and relativistic universe.

    Peter D MorrisonPeter D Morrison19 giờ trước
  • there is no present, or now for that matter as time never pauses so there is only past and future

    sausageslapssausageslaps19 giờ trước
  • Its as if one's personal flow of time throughout the block is constantly made from complete awareness of the previous moments that led to this one being currently experienced, and the direct, foreseeable moments out beyond this current moment. ☺👍

    Heavy Joe ChipmanHeavy Joe Chipman19 giờ trước
  • Help! I don’t get it. How can one define the existence of the present based on their perception / observation? Why does something need to be observed to qualify as being in existence? Such qualifications on existence limit our understanding of time to the speed limit of light... e.g. the transfer of information. But the existence of each point in space should not be defined by its ability to successfully broadcast confirmation of itself in a ‘timely’ manner.

    Ray ORay O19 giờ trước
  • Mind blow. Have you ever tried DMT? Jamie, pull up the video of the gorilla fighting a toddler.

    Right Wing Safety SquadRight Wing Safety Squad19 giờ trước
  • I like turtles.

    Jeremy WeemsJeremy Weems19 giờ trước
  • This sounds like render distance... Simulation?

    WhatTha WhatWhatTha What20 giờ trước
  • why do you call the fraud "the smartest guy in universe"?

    KraflynKraflyn20 giờ trước
  • No. No they do not. I just saved you 16 minutes. Go watch something useful instead.

    Son&PopCo-OPSon&PopCo-OP21 giờ trước
  • A.G.I will be man's last inventions

    jama warsamejama warsame21 giờ trước
  • Thank you for the extravagant explanation of Perception and Imaginary Theory. Good video though.

    Lisen TuMeiLisen TuMei21 giờ trước
  • I read it "Does the Fast ans Furious exist" for some reason lol

    MithaqMithaq23 giờ trước
  • Matt, you look either super drunk (which ozzies don't get) or super sick in this video... so... get well, man! :)

    oren shvedoren shved23 giờ trước
  • Too complicated. Simple Version : "Yesterday is history, tomorrow is mystery, today is a gift, thats why its called a present" - Master Oogway

  • 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!!

    Phil RobinsonPhil Robinson23 giờ trước
  • interesting question. you'd percieve time as some interdimensional existence that overlays one another, past present and future all in one space. hmm.

    Bo HuggabeeBo Huggabee23 giờ trước
  • 11:11

    Johnny OJohnny ONgày trước
  • I was literally thinking about this exact thing last week and now it’s in my recommended...

    SharkieSharkieNgày trước
  • I will be honest. I can not follow this. I am stupid. :(

    Buddy And The BlueprintsBuddy And The BlueprintsNgày trước
  • 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

    Shaheen GhiassyShaheen GhiassyNgày trước
  • Am I the only one who paused the video a ton to try to understand what he’s saying?😂

    Joe MooreJoe MooreNgày trước
  • 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.

    DuncanDuncanNgày trước
  • So has anyone ever figured out how dejavu works ? If so let me know

    CodeName PizzaJrCodeName PizzaJrNgày trước
  • 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.

    DuncanDuncanNgày trước
  • 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?

    Robert FieldsRobert FieldsNgày trước
  • 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.

    jmbjmbNgày trước
  • Jesus this channel can sometimes talk alot of baloney

    spine spindlespine spindleNgày trước
  • So, Dr. Who was right when he said that time was "A big ball of wibbly wobbly, timey wimey stuff." 🤔

    M RyanM RyanNgày trước
  • Presently, I'm confused.

    Rick OshayRick OshayNgày trước
  • 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.

    eric pohlmaneric pohlmanNgày trước
  • Time is illusion of observers.

    bizarre lifebizarre lifeNgày trước