When Is Now?

15 Vas 2021
538 242 Peržiūros

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When is now? Seems like a pretty simple question… just look at your watch. But do you and I share the same “now”? Let’s journey from Einstein’s thought experiments about relativity to cutting edge neuroscience research to try and answer that question.
References: sites.google.com/view/when-is-now-references/home
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Komentarai
  • Time is a concept that helps us measure our pain

    Bellhop WalrusBellhop WalrusPrieš 17 val
  • If you mirror your phone to the tv and turn on the camera and point it at the tv you get that never ending effect but it has a slight delay so it’s really cool. Mexican waveesque

    Kate O'learyKate O'learyPrieš dieną
  • It's only ever now -- in the eternal moment of now: “Does time really exist? Metaphysicians have questioned time’s reality. The past, they say, is just an idea in a person’s mind; it is no more than a collection of thoughts, each of which is only occurring in the present moment. The future is similarly nothing more than a mental construct, an anticipation. Thinking itself occurs strictly in the “now”- so where is any flow of time?” - Robert Lanza, “The Grand Biocentric Design”

    Gregory Maldonado [West CTA]Gregory Maldonado [West CTA]Prieš dieną
    • Time is an illusion and everything is happening "now"-2,000 years ago, now, and 50 years from "now"-it's all still happening now-eternally. ;-)

      Gregory Maldonado [West CTA]Gregory Maldonado [West CTA]Prieš dieną
  • I maybe odd, but with green circle esperiment in the first case I found the white flash too overwhelming in order to see the moving green, so I saw the green after the flash (but paying more attention I can see the green circle where the white is); while in the second and third cases I saw the green circle where the white flash appeared just from the beginning. Maybe just by paying more attention one can see a now-er now. =)

    Mr YodMr YodPrieš 2 dienas
  • Does this sound right? Through experience (as we witness events), we absorb / assess / & categorise data; enabling us to interpret those events. We each live within our own "reality tunnel" and in some respects have a unique view of these phenomenological events. Although, that unique view doesn't make us special of course, it's just based around location when said events occur. Really - we are the now, and the impressions we glean of this are based around what has been / as we process the event(s) ... Which means, much of what we experience is actually a past event, we are describing back to ourselves.

    JB 001JB 001Prieš 2 dienas
  • yeah ho

    K.J MedicalK.J MedicalPrieš 3 dienas
  • 18:20-18:40 I noticed that this part is out of sync. But I guess this 80 ms limit is just an average.

    rfvtgbzhnrfvtgbzhnPrieš 3 dienas
  • Think about it. To make the scene at the beginning with the video being played back simultaneously in the background he basically had to do it once with the black screen, then paste the video scaled down in the screen but then you'd have just a video showing a black screen being played in the background. The editing person basically had then to rerecord and repaste and rerecord the scene for however many instances of the clip they needed until you don't notice the black screen:))) Wild Props to editing

    Matei FlorescuMatei FlorescuPrieš 4 dienas
  • we dont get this explanation in school

    Gede Bagus PPGede Bagus PPPrieš 4 dienas
  • Here.

    Jeff ListerJeff ListerPrieš 4 dienas
  • This is my moment. My moment of moments

    Alex RudieAlex RudiePrieš 4 dienas
  • 10 seconds ago this was the future.

    Bobby BiggerstaffBobby BiggerstaffPrieš 5 dienų
  • I love the spaceballs reference

    jacob bordersjacob bordersPrieš 6 dienų
  • This broke me

    Laura BythatagariLaura BythatagariPrieš 6 dienų
  • Stay curious, it's okay to be smart.

    Rangu Pati SubediRangu Pati SubediPrieš 7 dienų
  • Did anyone else actually immediately notice that the TV part was out if sync? Cause I realized something was wrong immediately

    MayomustardmanMayomustardmanPrieš 7 dienų
  • Came to make sure there was a spaceballs reference. Glad you started off with it.

    Chris GraffeoChris GraffeoPrieš 7 dienų
  • I was going to say something about how it confused me that the point of origin of the camera's flash moved along with the train when it should stay on the same spot, but then I realized that it's impossible for anything in the universe to be stationary since we are on a planet orbiting a star that orbits the center of a galaxy moving at incredible speeds in the vast vacuum of the universe, which is also "moving" by getting bigger and bigger each moment. Our perception is inherently flawed, it can't keep up with the laws of nature. We never see reality when it happens, even watching my dog sleeping, it's happening so close but there's still distance between my eyes and him, and that distance has to be travelled by light to reach my eyes and see him, and by that time, he's already different. Ever so slightly different. I'm always seeing his ghost. Just... be grateful that we are small enough that we can't notice those inconsistencies

    JeddrewJeddrewPrieš 8 dienų
  • Now is “ happened happening will happen”

    kimberly carrascokimberly carrascoPrieš 8 dienų
  • Liked and Subscribed because of the SPACEBALLS reference 😂🤣😂 gold

    Adam OsborneAdam OsbornePrieš 8 dienų
  • Well your now is different from my now

    Epix Gamer YT!Epix Gamer YT!Prieš 8 dienų
  • I see the white ring inside the green in both animations. Am I a mutant?

    atwaxatwaxPrieš 9 dienų
  • 1:54 "lets pretend Marshall Mathers never picked up a pen, Lets pretend things would've been no different"

    nomoreusernamesleft1nomoreusernamesleft1Prieš 10 dienų
  • This is existential crisis in a nutshell

    Random guy YouTubeRandom guy YouTubePrieš 10 dienų
  • I thought I was the only one wondering about this 😂

    Alex MercerAlex MercerPrieš 11 dienų
  • I’m getting a headache

    Isidoor DubbelboerIsidoor DubbelboerPrieš 11 dienų
  • Thank you for giving this awesome knowledge 👍🏻

    Kishor AghavKishor AghavPrieš 11 dienų
  • title: when is now? video: but what if I’m at PrOxIMa B?

    Glenn AndersonGlenn AndersonPrieš 11 dienų
  • WHEN!?! Soon. AHH!!!!

    rlcbon08rlcbon08Prieš 12 dienų
  • Thats a ping dumbass we just have lame wifi

    super adssuper adsPrieš 12 dienų
  • Now is 18:30

    Eric Laurențiu LittauEric Laurențiu LittauPrieš 12 dienų
  • so present is the past and the future is the present and the past is the future. makes me wanna puke

    OOFERSKIIOOFERSKIIPrieš 12 dienų
  • So that ring illusion has another far more reasonable explaination. We can’t focus on two things at a time so the flash lags behind reality.

    Raven Bona-IdeRaven Bona-IdePrieš 12 dienų
  • Did... did Joe just make a Spaceballs reference?

    Justin BaylessJustin BaylessPrieš 12 dienų
  • perhaps now is independent of physics, beyond the laws of physic.

    Madhur ChavadaMadhur ChavadaPrieš 13 dienų
  • In high school I was told that Thomas Aquinas(1225 - 1274) said "Time is the movement of matter as it impresses the mind". I guess Tom was ahead of his time.

    DrinkingStarDrinkingStarPrieš 13 dienų
  • This video game me anxiety.

    prashamsprashamsPrieš 13 dienų
  • Maybe someone mentioned this, but the camera flash example might require more scrutiny. To say that the doc on the train sees the flash hit both ends of the train simultaneously feels flawed. It's as though the light is imbued with the inertia of the moving train, and that is false. If the speed of light is constant, wouldn't the observer on the train also see the light hitting the back of the train first?

    Randy SchadRandy SchadPrieš 13 dienų
  • So Heiseinberg gets pulled over and the cop says "it's about time Bill Hader made a cameo" Love ya buddy

    B.S. FordB.S. FordPrieš 13 dienų
  • Now..... is both simultaneously every everywhen, but also every nowhen existing at the exact same moment....is when a wave function collapses, and the fuzzy possibility space reduces to a specific observable property.... is wherewhen completely and totally nothing, but also absolutely and completely everything exist both together at the exact same spacetime.....is the wherewhen the )( pass each other...this is now !!!! ✌💗👍

    Lindsey MacintoshLindsey MacintoshPrieš 13 dienų
  • There is a time, I hope, when I will understand this video.

    Lorraine OdellLorraine OdellPrieš 14 dienų
  • 1:19 It would appear that GMT owns 'the time' but is at war with Time Square. The 'real' now is that of he that 'owns' the time and is therefore always ahead of events. 1:26 You're 'in the past' compared to me now; unless I exist in your past because your country owns the time and is ahead of me; in which case your present becomes your past but could still be in my future. The date doesn't mean anything.

    Fils de Jean NoirFils de Jean NoirPrieš 14 dienų
  • Only about six and a half minutes in and I’m already lost. And now my head hurts because, even though I understand the overall point of the video (the fact that “now” is relative and different for each individual), I keep trying to make sense out of all of the specific points he’s talking about and I just can’t.

    Nathaniel SchwartzNathaniel SchwartzPrieš 14 dienų
  • Only about six and a half minutes in and I’m already lost. And now my head hurts because, even though I understand the overall point of the video (the fact that “now” is relative and different for each individual), I keep trying to make sense out of all of the specific points he’s talking about and I just can’t.

    Nathaniel SchwartzNathaniel SchwartzPrieš 14 dienų
  • ltsoft.info/down/yWmmZmGyaJzTe6Y/vaizdo-ra-as

    Fils de Jean NoirFils de Jean NoirPrieš 14 dienų
  • the flash lag illusion doesn't work on me, I see 2 frames at once, one where the ball is filled with light, and the other with the ball hallow directly below it.

    EggAndCheese SodaEggAndCheese SodaPrieš 14 dienų
  • time flies!!! Did you see it??

    mewmew pokèmonmewmew pokèmonPrieš 14 dienų
  • hahahahahahahahahahahahahahahahahahahahahahahaha

    mewmew pokèmonmewmew pokèmonPrieš 14 dienų
  • Why doesn't the flash lag illusion work for me? It looks like its in the center of the circle while in motion.

    Nicholas D'AmicoNicholas D'AmicoPrieš 15 dienų
  • 18:22 Being on my bluetooth headset, this was the first time it appeared synced up

    AmibivalentAgnosticAmibivalentAgnosticPrieš 15 dienų
  • The Flash ! 😎

    QreztQreztPrieš 15 dienų
  • Spaceballs!!!!

    jimmy Rocksjimmy RocksPrieš 16 dienų
  • Love the space balls reference

    joshua ninejoshua ninePrieš 16 dienų
  • This is not a good video to watch at 4 in the morning. The existential crisis quadruples.

    Colle SColle SPrieš 16 dienų
  • The explanations here confuse physical and psychological explanations to explain how "now" doesn't exist. But if we listen carefully, the video itself shows how "now" actually happens. 1. "Now" is a certain coordinate in the time dimension for a specific frame of reference. It is the ground zero of all other time coordinates in that reference frame. 2. But the "now" of a certain frame of reference is different from another frame of reference in much the same way that "here" is different for different reference frames. This does not mean that such time coordinates cannot be measured in certain ways. 3. Now, our nervous system has evolved to perceive time in a certain way. But time perception is different from time measurement, in the same way that space perception is different from space measurement. Our eyes perceive that train rails meet at a certain points or that the width of a road becomes narrower as it goes farther. But we know that this is not true by actually measuring the distance between the rails or the width of roads. This doesn't mean that space does not exist.

    Lud FaberLud FaberPrieš 17 dienų
  • The alike hardcover ironically print because oval supposedly include without a upbeat farmer. witty, tacit supply

    Marlin ArabajianMarlin ArabajianPrieš 17 dienų
  • There's only NOW. Yesterday, tomorrow are concepts, not realities. Zen Buddhists knew this 2500 yrs ago. But it doesn't matter...

    J GarboJ GarboPrieš 17 dienų
  • The smart energy synthetically enter because ounce startlingly fill given a irritating bakery. courageous, penitent criminal

    Revolve ProxiesRevolve ProxiesPrieš 17 dienų
  • When you change time, you change the world

    Ool SkoolOol SkoolPrieš 17 dienų
  • Someone count how many times he said now

    Don't Sue MeDon't Sue MePrieš 18 dienų
  • But, as the Smiths asked, "how SOON is now?"

    Mark ShiremanMark ShiremanPrieš 18 dienų
  • I LOVE TACOS!!! My favorite food LOL

    Est727xxEst727xxPrieš 18 dienų
  • Der anfang ist das ende?

    Eirikr VicenteEirikr VicentePrieš 18 dienų
  • Spaceballs. Greatest. Movie. Ever.

    The Cat Ate My ShoeThe Cat Ate My ShoePrieš 18 dienų
  • Space balls ftw

    binary tolkienbinary tolkienPrieš 19 dienų
  • Not me getting a *now tv* ad during this 😭

    Gryffinpuff 4lifeGryffinpuff 4lifePrieš 19 dienų
  • 17:41 sneaky pew

    Samuel BañuelosSamuel BañuelosPrieš 19 dienų
  • won't a light sphere be 2 light seconds across after 1 second? 11:02

    Øyvind LieØyvind LiePrieš 19 dienų
  • Mel Brooks already did this in Spaceballs.

    Douglas HeroDouglas HeroPrieš 20 dienų
  • Has anyone ever been in a situation where time LITTERALLY slows down. Or at least for you. One time i was jumping over a river and a fish swam past but really *really* really slowly and you know its slow when there's 3 really's. I could make out each of its scales and even its eyes, and my awesome brain registered this in what must've been half a second, litterally. And i still made it across the river.

    WolfButNoWolfButNoPrieš 20 dienų
  • The start xD

    WolfButNoWolfButNoPrieš 20 dienų
  • Time is a useful psychological construct.

    Say LoSay LoPrieš 20 dienų
  • I noticed the sound was out of sync, and it irritates me! 🤪

    Rachel RandantRachel RandantPrieš 20 dienų
  • Now is relative.

    Apollo JackApollo JackPrieš 20 dienų
  • "When you say its gonna happen "now" when exactly do you mean? See I've already waited too long and all my hope is gone"

    Scott O'SheaScott O'SheaPrieš 20 dienų
  • The tall latency longitudinally zoom because jumbo strangely smash by a average cocoa. stale, squealing spaghetti

    Brock JamalBrock JamalPrieš 20 dienų
  • Watching this high is another level of experience - mind f888ing blown

    Leon PossidonioLeon PossidonioPrieš 21 dieną
  • The madly wrecker radiologically spill because sharon shortly pop from a absent promotion. lamentable, attractive mice

    김밥동한김밥동한Prieš 21 dieną
  • wow that's deep

    hab eanghab eangPrieš 21 dieną
  • 6:35 this example doesn't make sense to me Light always has the same speed, so there isn't any relative truth to which side of the train the light hits first. It hits the back of the train first because it's moving to meet the light from the camera flash. Let's say the train is moving at 99.9% the speed of light. The camera flashes and almost instantly the light would hit the back of the train, and wouldn't hit the front of the train for some time. The person on the train would agree with the person on the ground.

    TylerTylerPrieš 21 dieną
  • The cagey uganda appropriately colour because hacksaw immunohistochemically hang around a garrulous treatment. abrupt, utopian lock

    Eth BondibooEth BondibooPrieš 21 dieną
  • So is "Now" faster than the speed of light...?

    Marty SmithMarty SmithPrieš 21 dieną
  • I'm so confused

    MD+MD+Prieš 21 dieną
  • So the brain has a clock cycle like a computer? Interesting! So within roughly 80ms everything we perceive gets processed and at the end we are conscious of it.

    NIGHT_WalkerNIGHT_WalkerPrieš 21 dieną
  • I wanted you to make a video about why do living things reproduce.

    J CiJ CiPrieš 21 dieną
  • information. at 11:23, more wrongness.!!!! this 2-d analogy of SPHERICAL radiation simply does NOT work!!!!!!!!! googletranslate

    David DavidsDavid DavidsPrieš 21 dieną
  • information. at 11:11, wrong. under the stated conditions, after one second, the Diameter of the sphere will be TWO light seconds.!!!! not one. cheers googletranslate

    David DavidsDavid DavidsPrieš 21 dieną
  • "But hopefully we can agree on one thing: tacos are delicious" Me, a vegetarian: ...no???

    SARA BENNETTSARA BENNETTPrieš 21 dieną
    • you never had bean tacos?

      Samuel BañuelosSamuel BañuelosPrieš 19 dienų
  • According to St. Talking of Heads...Time isn't holding up. Time isn't after us. Same as it ever was.

    Lisa MLisa MPrieš 22 dienas
  • 0:28 omg the spaceballs reference 😂😂

    K1NG LarfleezeK1NG LarfleezePrieš 22 dienas
  • You predicted the new LTsoft feature

    Musthegreat 94Musthegreat 94Prieš 22 dienas
  • Sounds like Eternalism only exists because science ignores the existence of consciousness (since consciousness can only be explored subjectively). Ironic that when pushed up against one of its own *boundaries* (subjective experiences) that science takes the God's-eye view (i.e., the view from the perspective of a *boundless* entity)

    RubelliteFaeRubelliteFaePrieš 22 dienas
  • vsauce vibes here!

    Tsegmed OdontuyaTsegmed OdontuyaPrieš 22 dienas
  • Now is a local thing based on personal perspective.

    Matthew DanczMatthew DanczPrieš 22 dienas
    • Yep, I nailed it. time is actually an approximation. The entire universe exists in a perpetual state of now. If nothing moved or changed in relation to each other there would be no concept of time. Even with motion in a Universe there is no "time" except as a mathematical concept. Time can have variable rates. If we can imagine that. It is theoretically possible for things to move faster or slower without increasing or decreasing the energy in the object to affect its velocity. It is even possible for the rate of recorded changes within a system to change, or perhaps the best way to think about it is to consider the smallest unit of time as being variable itself. Anything within the different flowing time would be unaware that they weren't the standard unit of time. Everything else would just appear to be slower or faster moving in relation to itself. In the vast emptiness between clusters of galaxies, time is at its fastest. While the area surrounding black holes is time moving at its slowest. This is actually one reason why the universe could appear to be accelerating in its expansion. Two processes with an equal rate of occurrence, but experience different amounts of ticks (as in clock ticks) would be seen as a tremendous fast acceleration of expansion by anything within a slower ticking part of the universe. In fact, the more empty space between two arbitrary points in the universe the greater the apparent expansion between those points. Up to and including an expansion which is two fast for light to keep pace with. This could result in light literally stretching to a point where it could no longer be detected because its period is so large that entire galaxies or larger could fit between the wave lengths. This is hypothetical of course, but it is well documented within the scientific literature that time flows more slowing depending on the concentration of matter present in a local space, which also means time is at is fastest where the least matter is present. Although this hypothesis should also lead to the generation of large scale cosmological webbing where matter appears to congregate because the matters presence really just slows the time the space surrounding that matter has had to propagate itself. These structures would probably appear to have more gravity than the calculations would support because the fundamental time governing the rates of expansion would be different, but like I said this is just a hypothesis.

      Matthew DanczMatthew DanczPrieš 22 dienas
  • Hmm yess Spaceballs

    MøøseMøøsePrieš 22 dienas
  • Not going to credit Space Balls for that bit?

    RubelliteFaeRubelliteFaePrieš 22 dienas
  • One thing that can be universally agreed upon is that the effect cannot precede the cause.

    comic4reliefcomic4reliefPrieš 22 dienas
  • I'm offended by the fact that they didn't title this "How Soon Is Now"

    Sebastian Soto OchoaSebastian Soto OchoaPrieš 22 dienas
  • It gets even weirder: our brains are pretty slow samplers of signals that our eyes report. At a certain slowness, we sample "reality" below the Nyquist frequency, and start getting all kinds of aliasing effects that our brains try compensating for, sometimes incorrectly. Most people are not even aware of this effect, but try it once in your life: watch some spinning wheel with a stroboscope light start grinding to a halt, and then spinning backwards, once you change the frequency of the pulsating light. What if our perception of reality is more heavily distorted than we might think?

    Farid HajjiFarid HajjiPrieš 22 dienas
  • keeping those algorithms happy...

    KoMaHu3λMKoMaHu3λMPrieš 22 dienas
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