Do the Past and Future Exist?

Oct 13, 2020
652 814 Views

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
Directed by: Andrew Kornhaber
Camera Operator: Setare Gholipour
Executive Producers: Eric Brown & Andrew Kornhaber
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  • What the heck is music then ????

    RypeDubRypeDub19 minutes ago

    Angel MartinezAngel MartinezHour ago
  • Today is the day before yesterday of the day after tomorrow.

    thomas makucevichthomas makucevichHour ago
  • This guy watched TENET in 2021

    cobb 01cobb 012 hours ago
  • Does the concept of block time work with Many Worlds theory?

    t3hMEMEt3hMEME2 hours ago
  • Since time is not linear, then try viewing it as if you are sitting on a vinyl record that just goes round and round. The is no past, no future and no present because time is a human construct and has no reality.

    S.L.SS.L.S3 hours ago
  • Hey thanks for this it's great to find the multi verse perfect in all ways my Lord. I love the idea, it's beautiful, I would like to see someone other than psychics included, you did great!!! Also, I am happy that you've given me your time. Life on Venus heheh!!!! To know each planet out there, would take a lifetime, I don't know what I want to know. I was shocked in even being here. I am happy I am with God. Forever and ever.

    Lindsay MayeLindsay Maye4 hours ago
  • Here look I can say that scientists that think one day time travel could exist are wrong its not like everything is being saved to a memory card once something has past then its gone and the future isn't really planed I'm a christian and I believe god has the future In store for us.

    ZentonixZentonix4 hours ago
  • At 6:16, this video claims "Nothing, not even information, can travel faster than light." That's ironical, because actually, only information, for the time being, has been PROVEN to be able to travel faster than light. Atoms entanglement proves it. You act on one atom, and its entangled atom, whatever the distance between these two entangled atoms is, will react the same way. Therefore, information CAN travel faster than light.

    Yves StukaYves Stuka5 hours ago
  • Interesting however still guesses, like everything else about time, and beyond space. We don't know, so men will give their best guess. I put it in the hands of the one who created time, and space for us to play in.

    Bob SpencerBob Spencer5 hours ago
  • i believ that like absolute zero there is a absolute time just that none can ever get that in nature

    chronoss chironchronoss chiron9 hours ago
  • What I am going to do next moment can not be in anybody's past. No confusion.

    Srinivasa IndurthiSrinivasa Indurthi9 hours ago
  • The Past the Now and the Future all "exist" at the same time but only at one point. At this point we are living in all three but can only operate in the now.

    Jaxxon BalboaJaxxon Balboa11 hours ago
  • The last answer is : if time does not exist. ..

    Hati KeseoranganHati Keseorangan11 hours ago
  • If our consciousness is like the music being played on a record, would the needle be our soul anchored outside of spacetime, experiencing our consciousness as it moves forward?

    Bryce GrahamBryce Graham14 hours ago
  • i wonder what the difference in how we perceive time feels if we felt earth come to a slowing stop through space as apose to what it would feel like just to be suspended completely still in space affected by nothing. i wonder if time would somehow shift on a new wavelength.

    ninjxxittyninjxxitty16 hours ago
  • If one were to travel between layers of the block universe you would need to be a portal?

    ninjxxittyninjxxitty16 hours ago
  • Yup, only the present exists. If not, then manifest the past and future. Cannot? Then it's theoretical gobbledygook.

    buzzcrushtrendkillbuzzcrushtrendkill16 hours ago
  • is this about selling T-hirts or what?

    Ronald MolagRonald Molag16 hours ago
  • Now exists the future will the past is gone.

    carl ganglcarl gangl16 hours ago
  • This episode... is out of my mind... hard to see the light at the end of tunnel... :) for me :)

    oOo GimmyoOo Gimmy17 hours ago
  • In memory and potentially. Now is but a node in space-time, a particle, perhaps.

    Christopher EllisChristopher Ellis17 hours ago
  • If time is just a dimension like the 3 space dimensions, does that mean the future and past already exist "on the time axis" (if you'd have a 4d coordinate system)?? And if so, does that mean the future is already determined?

    Elias ÜbelhörElias Übelhör19 hours ago
  • I highly prefer the new format of videos with more animations + pictures. Awesome!

    Lord RandomLord Random19 hours ago
  • Summary: The present exists... the past existed... the future will exist !! Want me to draw it on paper for you??

    giuseppe3010giuseppe301019 hours ago
  • Your LIFE consists of only two dates and a dash --- make the most of the dash !!

    giuseppe3010giuseppe301020 hours ago
  • To the third dimension time exists, but to the fourth dimension it is practically non existent

    InfamousXInfamousX21 hour ago
  • Amazing video as always! Tremendous production value, topic, explanation and script :)

    Alberto ArtilheiroAlberto Artilheiro22 hours ago
  • I have been thinking about this guys, time does not exist. Only distance perceived as time.

    JDR10JDR1022 hours ago
  • It does in Hinduism

    Ashish PatelAshish PatelDay ago
  • Don’t cameras and memories prove the past exists?

    Michael ScottMichael ScottDay ago
  • No neither future nor the past exists. Everything ever from the moment of universes birth to death is happening exactly at the same moment. Everything is everything we are one. Each individual doesn’t exist we are one. People animals plants the planet all planets all life on them the entire solar system galaxy and universe all life in it all matter in it is all ONE. At ONE TIME.

    C AlexanderC AlexanderDay ago
  • When we remember something is it happening somewhere else?

    ja vja vDay ago
  • Sounds like there is a god

    Christopher JohnsonChristopher JohnsonDay ago
  • Time and space flow through us!

    Adam AntAdam AntDay ago
  • No past no future we are the infinity

    Adam AntAdam AntDay ago
  • 🤣

    Quetzel CoatlQuetzel CoatlDay ago
    • You better have Jesus Christ

      Quetzel CoatlQuetzel CoatlDay ago
  • So this video(4 me) WAS made in the past, while i'm writing all this words and letters are becoming the past too(scratch my nose), is also on my past now. BUT people in the future will read this(i think). Also, we live in The Lego's Universe now?. Nothing in the Universe is a Line, a Square a Brick or a Block, not even Clocks, real ones i mean not digitals. So how can i believe anything this dude says, said or will say, when you try to explain Time and Universe with Blocks, Lines, Dashes and Dots?

    Zephiroth Stryfe07Zephiroth Stryfe07Day ago
  • The present isn’t a moment it’s an eternity.

    islandonlinenewsislandonlinenewsDay ago
  • These are the same consepts as the bible codes.

    Gerard AhernGerard AhernDay ago
  • Welp, I’m gonna have to watch this video a second time.

    Nikki StaxxNikki StaxxDay ago
  • No, because time does not exist. It's simply a unit of measurement to measure the rate of movement.

    HexiHexiDay ago
  • Also! “I think, therefore I am.” Why is that everyone’s go to for philosophical enlightenment? I’m tired of hearing it because it’s non-sensical and only reinforces the unsophisticated ideology that you are anything other then your thoughts. You don’t think! “YOU” CANT DO ANYTHING BECAUSE “YOU” DON’T EXIST! At least “you” don’t exist as anything other then everything else. It’s so simple and elegant, how is this not conceivable to people?

    Richard GarciaRichard GarciaDay ago
  • Both ideologies about the “universe” being a stupid mechanism or being created are very wrong.

    Richard GarciaRichard GarciaDay ago
    • How

      MilesLEGENDMilesLEGEND4 hours ago
  • No, and neither do Birds. Get over it.

    Jack BJack BDay ago
  • With our Right hand we fight to understand and rationalize our existence but with our left hand we sabotage our ability to be aware of it. We humans have a sort of natural psychosis about ourselves.

    Richard GarciaRichard GarciaDay ago
  • For all of the religious people, I’ll explain it this way. God is so bored of being God, God spends all of eternity pretending not to be God.

    Richard GarciaRichard GarciaDay ago
  • As hard as it may be for you to accept, there is no Universe outside yourself. It’s inside you and you’re inside it. We exist like a Klein Bottle in relation to everything “else outside you.” In reality you can only say what you’re not, you can never really say what you are. There are many common sense ideas that give away the show, the only reason you can’t understand is insecurity. Fear, power, motive, desire, it can all be chocked up to; we really don’t want to know because ignorance is bliss.

    Richard GarciaRichard GarciaDay ago
  • Think of alpha centauri. We observe it as it was 4 years ago. Things have happened there that we have no way of knowing. And so if the future already exists for alpha centauri, then it must also already exist for us. Eternalism confirmed.

    drewbert83drewbert83Day ago
  • Past and future exist, but the present does not.

    Let’s take a walkLet’s take a walkDay ago
  • Only a prediction exists in this matter. Not accurate information.

    Wally WallyWally WallyDay ago
  • "Now slices" are irrelevant. They do not say anything about the universe because we can ONLY see "now" in a single location. "Now slices" are just perception we have as a limited observer. We can map the entire universe onto a single preferred foliation perhaps that's the true "now." All except this one foliation could merely be perception. The universe could be a block or perhaps something else explains it. As an observer we are limited in what we have the ability to know.

    dutchrjendutchrjenDay ago
  • I'm more in the presentism view. Althought as a none physicist, my opinon on this is useless :-). But to me, if you wanted ( in your slice of universe/time) travel to the past, you will have to reconstruct every single, smallest unit of reality to the quantum states there where in at the moment you wish to travel. Because it doesn't exist anymore. and since the furtur doesn't exist, you can't go to it, you could "build" it maybe. but changing every quantum states of a whole universe seem crazy. Since we know that GR and space/time are incomplete, I don,t think the whole worm hole to the past, exist. well not to the past of your slice/box of time, maybe to a difference point in time of a places where time flow slower of faster than your own "box". that exist at the same time as your present. all probably wrong, but I like the thought exercise, and whatever become real, I'll accept it from my physicist overlords.

    SylakSylakDay ago
  • I did study about space and time is like V letter at some point space and time become unity . Nothing move expend no time ... Time stops.... After years of looking into times and space ? I know I don't know nothing .....Ak

    ak11230ak11230Day ago
  • Would Entropy be the equivalent of the motor in the phonograph ?

    ValenHawkValenHawkDay ago
  • More nonsense from the scientific community to further impress upon the laymen their superior intellect. Listen to this man, he is explaining a possibility while trying to sound profound....there are theories upon theories constantly being's all possibilities, probabilities, theory and guesses. Only in time will we find the answers....but then what if time doesn't exist, in that case why bother, without time there is nothing.

    Ronald V RoncaRonald V RoncaDay ago
  • Do I understand correctly, that the present is the same to everyone, but the delay between the real present and our perception (which is to get the light travel to us from an event) causes that we don't agree on what's happened when? Or I didn't understand anything about this video?

    George ClintonGeorge ClintonDay ago
  • Hey you guys are idiots time doesn't exist, time is just a concept that humans created in order measure how long something last. No other existence in the universe uses the measurement called time except humans.

    Jesus GuevaraJesus GuevaraDay ago
  • Can't say how much I love this channel enough!

    Aaren CordovaAaren CordovaDay ago
  • The light cone arguments are comprehensible enough and it's relatively clear how they change each observer's *perception* of the universe, but they don't really eliminate the concept of the present - they just make it impossible to calculate as any observer constrained by light-speed. But as we can see in *all* the depictions, an observer unconstrained by light-speed can define the present quite easily - a discrete t-axis is still present, it's just not accessible to the inhabitants of the block universe as their own perceptions of time are indelibly altered by position and velocity within the block. One key indicator of something akin to a 'true present' is that there is never a possible light cone that lets me see another observer's future *before they do* . I can see other elements that will interact with them in the future before they perceive them, but I can NEVER see another observer's future - or my own - I can only see nearer or further into their past depending on our relative positions and velocities. Even the super-luminal traveler can't see *my* future - they can only travel into the image of my distant past and back. This absolute bulwark protecting the Future from exploration strongly suggests that there *is* a present, even if it's hard or impossible for those of us experiencing it to agree on exactly what it is.

    JesseJesseDay ago
  • Cultures think of time differently, unfortunately since colonizers control the world by force we generally think of time in the way THEY think of time ie Roman Thought

    David BarberDavid BarberDay ago
  • So Here's a question for you? Based on this Cone of light that we observe. Is it possible to Take a Satellite and put it at the 4 corners of the solar system and extend of Cone of Light? I know it would still take a long time to reach us at earth again, but its like taking a sneak peek? S -------------------------------> E

    SulanisSulanisDay ago
  • "But interpreted some ways" - i.e. made up for the benefit of sci-fi writers because that's all physics is for these days.

    Raw EngineerRaw EngineerDay ago
  • 9:12 Instructions Unclear, stubbed my toe and caused a Big Bang. Sorry guys

    Tim RobbTim RobbDay ago
    • It’s ok I’ll have it back soon leave it to me and a few pissed off entitys

      Neil WilliamsNeil Williams10 hours ago
  • lol every time someone talks about determinism and perception of time all i can think about is the one electron universe theory

    Cid SapientCid SapientDay ago
  • The present is the superposition of the past and the future! :-)

    Mark PressleyMark PressleyDay ago
  • The past HAS existed, the future WILL exist. However you look at it.

    GeoDenGeoDenDay ago
  • Not a perfect accent for all type of people to understand.

    Mr. OrcMr. OrcDay ago
  • My Ears hurt and my head hurts, I have 2 ouchees!

    last name first namelast name first nameDay ago
    • Me to b ok

      Neil WilliamsNeil Williams10 hours ago
  • So Much Universe, So Little Time. The current crisis in cosmology and how we got here. we got here relying on time, which only leads to more questions and dead ends.

    Green NightsGreen NightsDay ago
  • Jonas from Dark is now doing physics youtube channel

    tehdreamertehdreamerDay ago
  • he got thin.

    Hector GanzonHector GanzonDay ago
  • Yes it does because the now would never be.

    mark macmark macDay ago
  • Jaykee the Wolf: past, present, future do not exist. Luis: ?? Jaykee the Wolf: Without consciousness. Luis: genius. you deserve a beer for that one!

    Natas DiabloNatas DiabloDay ago
  • There is something wich I find unconvincing in the definition of the present being your light cone. Would "simultaneity" be restored, if the definition of the present was "the state of every object in the universe when the time taken by light to reach your present position equals light speed / distance" ?

    Fabien VidalFabien Vidal2 days ago
    • The problem with this, I would assume, is the term "distance." The distance between your present position and every other object in the universe, is constantly changing with time. So in order to judge your "now" with every other "now", you would need to take into account many future and past moments too that are crucial factors in just how long it takes light to reach you from those "nows." So in that sense, you can't talk about "simultaneity" and "now" in a vacuum, because to do so, you need to speak in terms of hypothetical light rays to traversing distances that are fluctuating and affected by NON-simultaneous events. If the measurement of your simultaneous event is dependent upon events that are non-simultaneous, I think that raises a huge problem. Basically the fact that light is not instantaneous, rules out the possibility of a single "now" in the universal sense. Perhaps you could define a logically consistent convoluted definition of "now", but from a universal perspective and physical perspective, it would have no actual meaning in reality.

      agcagcDay ago
  • I think it's important you include an argument that block time exists rather than it being based on a imaginative experience. You can imagine the structure in some sequence of events as happening at once like some over exposed film, but that isn't an argument for it actually existing as a physical trait of the universe, other than the firing of neurons that constructed the image in your mind. Even the argument of a position being an electron traveling backwards in time was a mathematical assumption in Feynman's style of simplifying the universe in order to get answers at the scales he can work with and observe.

    Michael PierceMichael Pierce2 days ago
  • How do we know that time is a different type of dimension and not just a higher dimension that we happen to perceive differently that the other three? Also, if two objects move directly away from each other, each moving at 75% the speed of light, would one not appear to move at 125% the speed of light relative to the other? Or am I not understanding the funky physics correctly?

    Kristian LarsonKristian Larson2 days ago
    • I don't know what you mean by "higher dimension." It certainly is another dimension. You can also do geometry with time as a dimension. But here's the interesting thing that distinguishes time from space. Take a piece of graph paper. If you plot 2 co-ordinates on the graph, and draw a straight line path between those two co-ordinates of SPACE on that graph, that straight line path would correspond to the shortest distance possible between those two points. But now imagine your graphpaper is made of spacetime. If you plot a straight path between two co-ordinates in SPACETIME, that straight path, is still the shortest spatial distance, but it also is the LONGEST TIME DURATION possible too. So the FASTER you reach another point in space, the SLOWER you reach another point in time. And this has a lot to do with the speed of light / relativity and why light has a universal speed limit. And it addresses your second point. No, the 75%s don't add up in that way. The faster something is moving away from you (distance-wise), the slower its clock appears to tick. It's built into the fundamental geometry of the universe that it will balance out. The quicker you go through space, the slower you go through time, and vice versa. Nothing can travel faster than the speed of light.

      agcagcDay ago
  • I believe that there is no such thing as time. Only our perception of time based on change

    V 4 VendettaV 4 Vendetta2 days ago
  • Didn't you already do this video?

    Simon SozziSimon Sozzi2 days ago
  • When you live in the past, you are depressed; when you live in the future, you are anxious.

    vbddfy euuytvbddfy euuyt2 days ago
  • I have one word for you ... tenet

    JSyntaxJSyntax2 days ago
  • Wut...

    Matt HMatt H2 days ago
  • Next big miss is the concept of entropy. Once again life ruins it. Also, they have the concept backwards. The natural state of energy is to be as spread out and broken down as possible. As things decay, expend, radiate, dissipate and move eventually towards an even distribution of heat energy (aka the end of the Universe), it moves towards order - not away. A perfectly even distribution of energy would be "perfect order". A chunk of mass is disorder, the end of the Universe is perfect order. The universe moves away from disorder.

    River ChickenRiver Chicken2 days ago
    • said enough about this for now, but i will leave you with one last thought. Consider that it is all about consciousness and many worlds and - REALITY=INFINITY/ZERO

      vbddfy euuytvbddfy euuyt2 days ago
  • Physics doesn't work when run backwards. That apple wouldn't fuse back together if the events were simply run backwards. Some things work, but all do not. Big miss by contemporary physics to still be claiming this.

    River ChickenRiver Chicken2 days ago
    • @Carlos Grant correct, which is nonsensical here in reality. I have heard it all to date. The same folks say it is impossible to know the location and velocity of those particles, which would be required to complete that operation. I am going on what the physicists are saying as well, and I love that we're all having fun trying to get to the answers. I also know that sometimes all they have to extrapolate with is math. Math does not always predict reality however, and is important to keep in mind when considering the "If".

      River ChickenRiver Chicken2 days ago
    • Sorry, another forgot: Nobody in the video is claiming the apple would be "unsliced". That diagram is just to show what a now slice is in a block universe and how two observers in different frames of references will not agree in what now is.

      Carlos GrantCarlos Grant2 days ago
    • @River Chicken Sorry, I forgot to mention that I wasn't talking about rewinding time. It's not possible to do that...

      Carlos GrantCarlos Grant2 days ago
    • @River Chicken Here's the answer: By the law of physics the apple would, yes, fuse back together. This was demonstrated before but using a glass breaking and fusing back together. Apparently (as in, I'm not the one saying this) If you knew where every atom of that apple was and if you could somehow reverse the trajectory of every atom in that apple after it was sliced, if you could simply push it back with the same exactly force that slit it but in the opposite direction then the apple would come back to it's original state and what would not break any law of physics. Again, this is not me saying... I know about entropy and how hard is to unscramble an egg but they say if you could manipulate it at an atomic level it would't break any law.

      Carlos GrantCarlos Grant2 days ago
    • @Carlos Grant They do, it is accepted as being true. I ask you, how exactly would that apple come back together as if it were unbroken? I agree all of the "movement" physics work when it is breaking apart, but the apple would not "fuse" back together under any circumstances by reversing the flow of time. In other words, that event if time were reversed, would be impossible in the current Physics model.

      River ChickenRiver Chicken2 days ago
  • Everything about the Universe seems deterministic, except the free will of life.

    River ChickenRiver Chicken2 days ago
  • Paradigm shift - future is written, and creates the present; or you would not exist in this paradigm if you had no future. If the past created my present I'd be dead already; read my bio and see what never happened to me in the past, according to the future.

    Green NightsGreen Nights2 days ago
  • past will always exist...future! no one knows

    For the fun of itFor the fun of it2 days ago
  • The present is a Planck second of time in material existence. The past is recorded in the fossil evidence and electromagnetic output of the electrons work product in electromagnetic waves. The future is predictible but, only if you are fully aware and in the present about the past and the likelyhood of the future events. We live in the past and stuggle to remain in the moment.

    Al GarnierAl Garnier2 days ago
    • @Green Knights READ A SCIENCE BOOK!

      Al GarnierAl Garnier22 hours ago
    • @Green Nights Logic is material evolution. My logic is based solely on scientific, material evidence. I trust nothing without empirical evidence. My logic is based on the scientific evidence of electron interactions in the causality of evolution. You are trying to validate your limited ignorance as evolutionary logic without a shred of evidence to support the ignorance. It is your ignorant beliefs without science that is the illusion of your delusion. The fundamental electron and its unique spin/charge characteristics is the answer to the the causation of our existence.

      Al GarnierAl GarnierDay ago
    • @Green Nights Logic is reality. Genius does not exist in consciousness. Knowledge exists in the evolution of materialism and consciousness, without knowledge of material events, is a wasted life in emotional ignorance. Genius emerges from the sharing of empirical knowledge and the evolution of materialism. The genius is, to influence the future of material evolution through conscious intervention.

      Al GarnierAl GarnierDay ago
    • @Green Nights Logic is the manifestation of material evolution through the mathematical processes of harmonic wavefunctions and resonances and is recorded in time and engrained in materialism as fossil and electromagnetic entropy. We unwittingly exist in the present and live in the past, trying desperately to understand our future. We are idiots trying to comprehend materialism from ignorance. Our stupidity is our belief in fear and emotional ignorance instead of searching for truth in material evolution. The present is evolving but, the past still exists and is irreversable but, whatever may come in the future is dependant on the next note in the symphony. It's either harmonic bliss or, abstract disharmony and survival of the symphony is dependent on your logical choice and natural selection. Make the wrong choice and your future harmony is jeopardized.

      Al GarnierAl GarnierDay ago
    • @Green Nights Time is real and reality is timeless. It's actully you who are the illusion from the first memory of your big bang birth until the day you die. Consciousness isn't fundamental, it is emergent from biological evolution and we're just lucky enough to be one of the chosen few to experience it without having to believe in anything except our experiences. Reality is what it is, we just have to be conscious enough to understand and control our enviornments. We are developing Artificial intelligence to better understand the logic of reality, it is too technical for human emotion to grasp the mathematical intricacies of the Big Bang's harmonic resonances.

      Al GarnierAl GarnierDay ago
  • Meaningless in the absence of time. What never was is never again.

    holylingusholylingus2 days ago
  • I actually wrote a research paper on this about 40 years ago. Andrei Linde of Stanford lifted my space-time maps from the paper and took them out of context, now there are posters of them in physics departments around the world showing maps of the expanding universe with one crucial omission... my maps showed the dividing line between past and future. The present is an impulse wave coming from the primordial singularity, a sharp pulse of energy being introduced into the universe at the beginning of space and time. Energy must be conserved, so the impulse wave propagates from past to future, altering the geometry of space-time as it goes to incorporate the new energy into the manifold. On this sharp dividing line between past and future change must occur. This is the phenomenon of the present, and it is a repetitive phenomenon. It is known as the energy of action, it appears in all our equations as the Planck constant. So, yes, the past and future do exist, but in a static state, and every impulse wave of energy introduced through the primordial singularity re-initiates physical reality, re-plays our history, but each impulse wave provides fresh energy to make subtle changes to the history of the universe. The "many worlds" interpretation of quantum physics is wrong. Every object in the universe has a book of histories to choose from for actualization, the number of pages depending on how many impulse waves have been introduced thus far, and the universe of objects is better viewed as a vast library filled with such books. When the quantum wave function collapses for an object, it is nature finding a compatible history for the object in that object's book, and actualizing it. If there are no compatible histories for that particular object, the universe uses some of the energy of the impulse wave to write a new page in the book of that object's potential histories. If nature actualizes a previous history, it need only annotate the page that was used. Even "Base Reality" is a simulation, computing cycles have to be minimized to keep reality from bogging down the cosmic processor. That's why quantum physics is so weird. There's no point in selecting a history for an object until it matters, so things are left indeterminate until something interacts with the objects and forces nature to select a history for them to actualize. I've explained this many times over the last four decades, but your physicists are more interested in piracy to profit their personal careers than they are in finding answers or knowing the truth of things.

    Arnold BarzydloArnold Barzydlo2 days ago
    • @Carlos Grant You kind of lost me on the alien in another galaxy thing. Let me see if I can give you a simpler analogy of how this works. Think of the history of the universe as a movie film. The projector of the movie can only illuminate one frame at a time. The movie is a recording, so once you're done watching it, you can load it back into the projector and watch it again. The thing about this movie projector though is that it's magic, every time it shines the light on a frame in the movie, it very subtly changes the image, adds a bit more detail, or even re-writes a scene. So, every time you load the movie into the projector, you notice the movie has changed a little bit from what you remember. The entire history of the universe is laid out in the time-like dimension, but when we introduce a sharp pulse of energy into it at the beginning of space and time, we've reloaded the movie and that pulse of energy will go through it frame by frame both replaying it and changing each frame a little bit based on what is already recorded there. Does that clarify it any?

      Arnold BarzydloArnold BarzydloDay ago
    • Although it was hard to follow your explanation, the parts I understood I liked it, so thanks for posting that. I just don't understand something about this notion that the future already exist. So, if for example my present or my "now slice" may contain the future of an alien in another galaxy... how can that be?

      Carlos GrantCarlos Grant2 days ago
  • WTH?

    Q WWG1WGAQ WWG1WGA2 days ago
  • Isn't the impression of the existence of different "slices" of the present only an artifact of ignoring the fact times run different for different observers? I.e. if you take different clock speeds into account would that not imply that everyone shares the same "slice" of the present? At least that is how I understand it, but maybe I got it wrong and if so what do I miss?

    jomen112jomen1122 days ago
    • This concept (Relativity of Simultaneity) only works when you think of what two (or more) observers consider to be happening right now in the universe. Only two people stationary to each other will share the same now slice. You and an alien in another galaxy would agree on the same "now slice" if you were somehow both stationary to each other. But, let's say that alien hops on a bike and starts moving towards you. Now his present will be aligned with what you considers the distant past. if the alien turns around and start riding his bike away from you then his now slice will cut at an angle and what he considers as happening right now in the universe will include your distant future. I'm quoting a video from Brian Greene on youtube. You can search for brian greene now slice. That is a "dumbed" down version of what this PBS video talks about.

      Carlos GrantCarlos Grant2 days ago
  • All life on earth has eggs to produce another form , the only living creatures that laid eggs where the dinosaurs, a comet wiped out but left the eggs to preserve in the ice.

    Harold BeaumonthHarold Beaumonth2 days ago
  • Wow. This video was filmed and edited , a past existed, proven. We, are now & present. Oldest recorded human is around 160 or less so a personally relativistic concept of 'now' could be the length of a 'life's' span. If you eat food you KNOW there is a future. This whole video uses Perspective as it's proof of concept. As soon as you started plotting points on a graph and then talking about a separate past for a second set of points you just restated general relativity . when you ask about existing simultaneously, no. Just because there is no observer doesn't mean there wasn't something to be observed. But there is a now and there is a finite past and there is an infinite future.

    trutheory algorithmstrutheory algorithms2 days ago
  • Thanks. Totally confused now.

    riana mohamedriana mohamed2 days ago
  • Hi sir. You are requested to make a video on this: 1. When does the sun's magnetic polarity get reversed? 2. What impact will it have on the Earth? 3. Recently in 2020, the sun's polarity has been reversed, for the 25th cycle. When was the first cycle occurred? 4. Approximately when will the 48th (final) cycle occur? 5. What will happen, when the final 48th cycke occurs? 6. Whenever the first cycle had occurred, before that had no polarity reversal cycle ever occured on the sun? 7. Will the sun never ever change its polarity, after the 48th (final) cycle? 8. If the answer to question 7 is that the polarity will stilll be changed even after that, then why is the 48th cycle considered as the final cycle? 9. If after the 48th cycle, any new fresh cycle starts, then what will be different in the cycle? Why will be a fresh new cycle and not the 49th cycle?

    Anurag GuptaAnurag Gupta2 days ago
  • you cant go into the future unless you go back in time first because its not written I mean recorded yet.

    Larry Lee LethbridgeLarry Lee Lethbridge2 days ago
  • Einstein was a very intelligent person and he contributed a lot to our knowledge of light, speed, eluded to mass, energy and relativity, but as an intellect and thinker, he is not qualified to hold Newton's crotch protector! Newton was and IS right about the universal clock and nothing exists other than the present instant in the ticking of the cosmic clock. As you so aptly demonstrated in your video, every action that is taking place in this instant is happening regardless of it's position in the universe, but requires an observer to make it a part of our perceived reality. Countless supernova explosions are happening in this instant throughout the known universe, and even though they are not visible to us, they are happening at this moment. The past is behind this moment, and the future is yet to be written and is certainly not determined. Yes, any movement or displacement of a conscious observer changes their perception of reality, but not what happened in that tick of the cosmic clock, but space, time and speed will alter different observers perceptions of it. It would matter not if you could travel at warp speeds, 10, 100 or 1000 times the speed of light, you can never go backwards in time with respect to Newton's cosmic clock. The question of determinism can not be separated from the debate over consciousness, which I will address here later. But, that being said you should also know that I have subscribed to the multiple-worlds theory for many years now, and it is based on the relationship of perceived reality to consciousness. Some amount of determinism does exit on the macro-level,and plays out under Newton's cosmic clock. Think about it like the impending merging of the Milky Way with Andromeda and other Newtonian physics down to and including our solar system's existence and our sun's interactions with other stars in our galaxy. However, determinism on the micro-level as it relates to our lives is much less a factor. Consciousness plays a much bigger role there. Peoples lives and events that occur in them are determined more by our conscious decisions that are made in basically three different ways. Many are made emotionally, while some are made logically, and some are a combination of both. The timelines of our lives generally follow the path that we lay out for our lives from the time we become sentient until the time that we appear to die to others around us. If you want to see the difference that your conscious decisions make on your reality timeline try this experiment. Make a conscious choice to let any significant decisions you make for a set amount of time be determined by a coin toss, a purely random act of chance. I assure you that the events of your life's expected time line will change drastically, but it will fit nicely with the many worlds theory. Now, lets talk a little bit about consciousness and it's effect in our lives First, without consciousness there is nothing, and I do mean NOTHING. Our perception of reality actually creates reality. Without our ability to perceive it, it would not exist. Without consciousness everything that existed would be totally predetermined, but there would be nothing to acknowledge it and give it substance - No reality could exist. Consciousness is in fact a very complex electromagnetic waveform generated by all sentient life forms and just like in electronics theory, the product of merging of all those complex waveforms results in more waveforms that are the sum, the difference and the two originals. The number and types of those interactions are innumerable, or if you prefer "infinite" , although I dislike using that word because infinity does not exist any more than "zero" exists in our reality and math. You are the Captain of your own ship of destiny and you pick the ports. Your own reality IS what your mind and senses perceive it to be and it is just as real and valid as anyone else's perceptions of it. If you only consider the nearly eight billion people on this earth with which we have a somewhat shared perception of reality, less with some and much more with friends, family and colleagues, you should quickly realize that it can be considered to be a giant venn diagram with intersections indicating the areas where our perceptions converge into a shared reality. If you are reading this, our venn diagrams are converging and there is a sharing of our perceived reality going on right now. I have said enough about this for now, but i will leave you with one last thought. Consider that it is all about consciousness and many worlds and - REALITY=INFINITY/ZERO

    Michael BartlettMichael Bartlett2 days ago
  • Time exsists so that it can be recorded on the God.My liveing universal Matrix

    Larry Lee LethbridgeLarry Lee Lethbridge2 days ago
  • Could it be true that time is not a requirement to describe the "present" and therefore your discussion about light cones doesn't apply. Imagine instantaneously freezing the whole universe (not just the observable universe) at any given moment. Different observers might disagree about when the universe was frozen but surely such a slice of the universe is conceptually valid? Maybe time is the illusion and the only thing that exists is present.

    KmuffsFPVKmuffsFPV2 days ago
    • Basically, what I'm trying to say, is that your request of "imagine instantaneously freezeing the whole universe" is sort of an impossible thing to imagine, because it assumes there is no cosmic speed limit. "Now" has to be defined as a specific moment in time in a particular region of the cosmos (otherwise "Now" means "All of Time"), but that specific, designated region doesn't correspond to, or "link up to" any other specific regions until its light cone has encompassed those regions. You have to first traverse the cosmos, to another distinct region, below the speed of light, to link those two regions together. If you ignore the confines of a lightcone, you're going beyond the speed of light, and thus, you're talking about things that are happening in the future from your lightcone's perspective. So to ignore lightcones and say "freeze everything in the cosmos as once" you're talking about combining your region's present with your regions future too, which is contradictory and extremely head-ache inducing to say the least lol. So you can't just take all regions of the cosmos and say "freeze them all at one moment" because there is no "one moment" except on the skin of a lightcone. The only way to judge what "moment" two regions are in, is by comparing them, relating them, via their overlapping borders of their relative lightcones. So there is no such thing as a universal "now", just like there is no center of the universe. Hope that makes sense. It's pretty tricky to convey with just words.

      agcagcDay ago
    • To freeze the universe, you'd have to pick a point in spacetime (a moment / a "now" and a spatial location) to freeze, and then flip the switch. That moment would freeze, and the freeze would expand from that location like an icy sphere at the speed of light. Everything outside that growing sphere would continue to move as usual... until... the sphere finally hits and encompasses it. Freezing it in place. And eventually, the whole universe would be encompassed and frozen to the point of that original moment and location. So you could freeze the whole universe, but it can't be "instantaneous." "Instantaneous" makes no sense in physics. There is no such thing, because there is a cosmic speed limit. And that is what is meant by a "light cone." The light cone is essentially that growing icy sphere, freezing the universe to a particular moment. Everything that gets frozen is the outer edge / skin of the lightcone. But all the motion that occured before it got frozen would be forever outside the lightcone, unknowable to the person at the centre of the lightcone, because light could not encompass it in time. When you look at the sun, you can only see it AS IT WAS 8 minutes ago. But you have to wait until the future, to see what the sun was like this "instant." And by that time, the sun's "now" has shifted another 8 minutes. You will never be able to see the sun as it is THIS INSTANCE because it's just outside your lightcone. You have to let your lightcone evolve by 8 minutes... by which time, the sun has also evolved its own lightcone which is separated from yours by 8 light minutes. You can only know what is going on in eachothers lightcones, when the lightcones overlap to create a shared "now." So "now" is relative, and it depends on the speed of light. So there is no universally shared "now" between you and the sun. The lightcone overlap (and thus the shared "now") changes... it stretches and squashes as the Sun and Earth get closer together and further apart in their orbits. So what constitutes an "instant" in the universe HAS TO depend on your lightcone, and the lightcone of the thing you're trying to share a "instant" with. There is no universal "instance" or moment. It's relative.

      agcagcDay ago
    • I don't think anyone knows for sure. Even in this video Matt doesn't commit to a definite answer. You just have to go with the answer that makes the most sense to you, or prove the others wrong.

      Carlos GrantCarlos Grant2 days ago