Do the Past and Future Exist?

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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
End Credits Music by J.R.S. Schattenberg: / @jrsschattenberg
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[@LesCish]

The past, the present, and the future walked into a bar. Suddenly they were all tense.

[@duprie37]

Technically...English only has past and present tenses, it doesn't have a future tense, just future aspects but LoL anyway

[@eval_is_evil]

@@duprie37 but future inevitably becomes past sooner or later :)

[@utetopia1620]

@@eval_is_evil Not to light.

[@alphanexusgames6563]

HEH

[@jessicathompson-gautreaux5992]

Wait... what is "suddenly"?

[@blevy1949]

I'm counting on my future self understanding this without the massive headache.

[@cyph1328]

Edibles help

[@Delt4_Cr4wfish]

He is ultimately describing different perspectives within a universe. But ultimately all time flows the same. It just appears to move at different rates. Imagine a race where everyone starts at the same time and ends at the same time. To each racer it feels as if time is at normal speed and looking at everyobe else they going slow. But in reality they going the same speed just the time it takes light to travel from them to u you and have increased your distance from the origin of where they were.

[@angelmattie1352]

😂😂😂😂🙌🏼🙌🏼🙌🏼🙌🏼🙌🏼

[@sicsemperevellomortemtyran3526]

@@Delt4_Cr4wfish that is an incorrect view of relativity. It's easy to think that time dilation is just an illusion, but time truely is warped.

[@Delt4_Cr4wfish]

@@sicsemperevellomortemtyran3526 so at what point did the big bang occur, at different points in space? Are u suggesting there was different points of a massive expansion and explosion? And at what point dose the universe end? If the universe is frozen and fusion is no longer occurring because the universe expanded too much, are there then people still alive somewhere. Clearly not.

[@R3LF13]

I once heard the block universe described as the "view from nowhen" and I still think that's once of coolest phrases. The graphics in this video did a great job of showing it along with the concept of time sliced at different angles. 👏

[@takasato5581]

it's now and never

[@PaulthePhilosopher2]

It is an error to visualize the Big Bang as an explosion you watch from afar because that presumes a vantage point that is literally outside the universe and therefore nonexistent. This entire video makes the same error but about the universe long after the Big Bang.

[@R3LF13]

@@PaulthePhilosopher2 I'm with you on the big bang but I think the "view from nowhen" is only an error if you consider it a physical possibility and not simply a helpful visualization of the 4th dimension.

[@ronnibee6753]

@@R3LF13 Woww that really helped me put everything into perspective! About the 4th dimension.. thanks!

[@Shane7492]

Also, if a photon doesn't experience time because it travels at the speed of light, its "experience" is just one eternal moment that includes all of the past and future. The paradox of that is mind blowing, because we observe it as travelling through space, which implies time. This relative nature of "time" is one of countless things that prove that all of existence is eternal.

[@axetroll]

Your comment is better than the whole video explanation, towards materialism

[@Rkenichi]

And if we consider that all of us are moving on a expanding universe way faster than the speed of light, the same applies to us as well

[@Shane7492]

@@Rkenichi That may be true. We seem to exist within spacetime from our perspective, but maybe in reality we're eternal and infinite.

[@mickyr171]

Ive thought this many many times and commented it, maybe time doesn't exist at all and its consciousness that creates the illusion of it, everything you are in terms of energy, existed long before you and will continue to exist long after you're gone, but only if you think of time as linear, if no energy can be created or destroyed then everything is just here and always has been, without a mind to perceive anything what does it even mean? and if we are made of the same stuff that exists everywhere and we're conscious then the very system we came from has the components of consciousness therefore must also be conscious to some degree right?

[@Shane7492]

@@mickyr171 Time is simply the illusory perception of the movement of "form" (I use quotations, because "form" is illusory as well). I think it's important to clarify the term "illusory". When we say it's an illusion, that doesn't mean it's not happening and isn't real. The illusion is real in the sense that it's a necessary part of experiencing anything. We just call it an illusion, because it's ephemeral and in a constant state of change/transformation. In a sense, it's a paradox. Here's the interesting thing, in my opinion. I think consciousness is illusory as well, but it's the only thing that allows an experience of anything. Anything existing without consciousness is no experience at all, but consciousness is ephemeral and transforms as much as forms do. Basically, nothing in existence is static. Therefore, all of existence and experience is an illusion, but the illusion (constant transformation) is a necessary part of existence. Everything is basically nothing, one thing, eternal, and infinite, and it experiences itself as a constant transformation of embodied forms and consciousness.

[@KhaiJbach]

"time is an illusion, lunchtime doubly so" - Douglas Adams

[@saadqureshi7127]

Mystery meat is also an illusion.

[@drrtfm]

The present is an illusion because you were naughty, not nice.

[@fred8565]

Universally there are no time. Just a useful developed by astrologist..

[@forthefunofit3230]

only for humans

[@RingtailTheRaccoon]

It's not really time that's changing its everything else.

[@Yora21]

"We're at now now." "Go back to then!" "When?" "Now!" "Now?" "Now!" "We can't..." "Why?" "We missed it." "When?" "Just now!" "When will then be now?" "Soon!"

[@patrickaycock3655]

Spaceballs

[@d.lloydjenkinsjr]

Now I have to watch SPACEBALLS

[@GGoAwayy]

WHOOOOOOOO??

[@Merennulli]

@@d.lloydjenkinsjr Now?

[@tjzx3432]

@@d.lloydjenkinsjr Heres the scene buddy, kzbin.info/www/bejne/pIOqdI2eaqZripY

[@OnNightmareRadio]

Who else is watching this in 2027?

[@destinypuzzanghera3087]

Hahaha😂🎉

[@ivanevseev1934]

I like the fact that a Nokia phone was existing much earlier than Newton himself in this part of the video 1:16

[@heybro345]

What would've happened if it was the Nokia mobile that fell? 🤔

[@Drali-qc7wr]

@@heybro345 🤣🤣🤣🤣

[@lake5044]

"May your future light-cone contain only wonderful things." Spacetime always keeps impressing me with their creatively smart thank-you notes!

[@medexamtoolsdotcom]

My favorite actually comes from a video game, with an alien race that ends their conversation with you with "May your offspring not be destroyed." Mighty magnanimous and awfully specific of them, wishing for my children not to be murdered and all.

[@Bobby-wq8bn]

@@medexamtoolsdotcom This :D

[@Aurinkohirvi]

Astrophysicist's happy birthday card.

[@Illure]

Now that phrase can be on merchandising.

[@loooongneck]

I hope it does cause that past light cone is looking pretty bleak not gonna lie lmao

[@mashtonish]

It's sometimes fun to go back and see the past Matt O'Dowd up to the present Matt O'Dowd in hopes for future Matt O'Dowd

[@FranciT98]

All interactions you've ever had with Matt O'Dowd are in the past though, seeing how everything is recorded. So you could posit that all Matt O'Dowd is past Matt O'Dowd.

[@mob8502]

@@FranciT98 even you met Matt O'Dowd you would only able to see a past Matt O'Dowd. So in conclusion you would never see a future or present Matt O'Dowd.

[@bananabreadman55]

And the other guy before him

[@nobodie9996]

Hacks!

[@joshuaentwistle960]

@@bananabreadman55 Never happened. Shhh

[@SpacePonder]

The DVD analogy is great to visualize the block universe. We know that the future events on the DVD already exist, even though we are at the beginning of the movie. It is just that the DVD player is working in a liner fashion. Our brains are similar, creating a liner forward flow of time. It's all very strange.

[@karmasutra4774]

So does that make us a projection/simulation?

[@nagualdesign]

_*linear_

[@elroyfudbucker6806]

You must be very young. It was a vinyl L.P. record.

[@WarleaderCoplann]

@@karmasutra4774 the question is what we define as a simulation. there is this one theory that states that our reality is a 3 dimensional projection (like a hologram) from a 2 dimensional external source. in a way time could be the result of the increase in dimensions. the true question after all is why? and what does it mean for our lifes and deaths? is dying like a wake up in another dimension/reality? or is it truly the end because we are just simulated for whatever reason.

[@nikthefix8918]

"Humans are such linear beings" - Q

[@mariotabali2603]

This episode is nuts i don't know why I find it so enjoyable.

[@TonyTheClitSnippingTigar]

Too be fair, I’m a little nuts for instance I have 3 testicles

[@nikthefix8918]

@@TonyTheClitSnippingTigar Ouch! What happened to the other one?

[@NicholasRehm]

Time for my weekly existential crisis

[@ChrisJones-rd4wb]

Cringe

[@powewq1748]

lol... sorry about your live looser...

[@janekbrat6951]

@@powewq1748 "looser": loser who writes loser with double o.

[@powewq1748]

@@janekbrat6951 I am sorry that your live is so pointless and meaningless that you have to comment.... my advice: 1) get a live. 2) admit your jealousy of my success which you will never have. 3) I have lots of sexx with beautiful women...

[@EvanRustMakes]

@@powewq1748 you sound like an incel

[@treering8228]

“The elusive ever moving eye blink we call the present” as a poet, that was beautiful!!!

[@zes3813]

wr

[@abigailmckernwalkingwithpo4582]

Tree Ring - I make video poetry for modern poets have a look at my work on youtube - Abigail Mckern Walking With Poetry!

[@mickmccrory8534]

Time is like driving on I-80... Des Moines is in the rear view mirror. Denver will be here, tomorrow morning. For now, you are stuck in Nebraska.

[@julianova9970]

it's a nice feeling to finally be able to understand these mind-blowing videos!

[@darko714]

I still don’t get it, but at least I can go back and replay the parts of the video that I can’t wrap my head around. I suppose it might be said that the past, present and future in a KZbin video all exist simultaneously.

[@bkmyland7062]

@@darko714 There is never a time that is not right NOW ( I came up with that all by myself lol). and how long is now? like, is it the immediate past, present and future all in an instant? which is no time at all? Sometimes I hurt my own brain by my own observations and questions. I'm a procrastinator, so I guess for me everything is in the future and tomorrow never comes, this is why I can't get anything done! Ok Ill stop talking now.,,, I mean NOW,,,,, nope start Now ! oh too late that "now is now in the past,,,, OMG ! does now exist even?

[@johnmartin5671]

“The increase of disorder or entropy is what distinguishes the past from the future, giving a direction to time.” - Stephen Hawking, A Brief History of Time

[@jona826]

TENET

[@mayarodriguezsrensen6904]

That makes sense. I love how he's able to explain things to amateurs like myself.

[@Thundechile]

Time doesn't move in your fridge?

[@notaspeck6104]

@Thundechile Your fridge is local, stop being pedantic.

[@MylesKillis]

@@jona826tenet uses the word entropy. It doesn’t actually use the concept

[@finfun3546]

Me while watching: hmmm Me after watching: hmmm..lemme rewind i havent understand anything lol

[@michaelsnedker5446]

i've gone back 4x already...

[@videoqualia]

All of his videos I need to watch twice!! I'm thinking to do this : go to first video of this channel, listen, then wikipedia, then wolframalpha, then listen to first video again. go to second video, listen, then wikipedia, and so on.

[@Olvenskol]

So, like every episode then... ;)

[@mayalawand7762]

HAHAHAHAHAHA

[@twinflamebeauty8342]

Hahahaha

[@davidnewbaum6346]

PBS Space Time, reliably causing headaches since 2015.

[@darkinf8093]

Brah they are providing are advance knowledge which we can't get from even fking university

[@zxKAOS1]

And this is just the stuff that's been "dumbed down". Real sciences involve a lot of math.

[@notyournamenotyourlastname3881]

@@zxKAOS1 it probably makes some actual sense once you understand the math

[@MrTripcore]

Confusion. Intentional. Caused by 1 part truth mixed with 1 part bs.

[@zes3813]

wrg

[@TheCoolsparks]

Block Universe does make a lot of sense. If you think about it why would the past be erased? Why do we only have a memory of the past and not the future? Incredible

[@MiaMore.]

This question is somewhat similar and reminds me of "If a tree falls in a forest and no one's around to hear it, does it make a sound?". Of course, the answer is subjective (depends on the logistics of how you look at it) however, the theory of the question is comparable. Lol. Ultimately, they are both a question of whether objects could continue to exist without being perceived.

[@siljrath]

"Do past and future exist?" "Not now."

[@georgesimpson1406]

They existed or will exist. How else can our language describe it.?

[@ferdinandkraft857]

@@georgesimpson1406 Our language can describe leprechauns too.

[@GhostScout42]

@@georgesimpson1406 nothing but now has or ever will exist...

[@georgesimpson1406]

@Bernd DasBrot is that not true? The past existed. The future will exist. This is simply what a tense is in language, defined by its own elements, its quite an engrained concept. You think there is an 'outside of time' yet there is no such place. Even if a dimensional spacetime, such assertions to "the past still exists" are only analogous and defined by tautologies.

[@georgesimpson1406]

@@ferdinandkraft857 um, yes it can. Just as obviously as people implying the past can be the future by saying "it always exists" or some basic paradox of tenses.

[@nelsonx5326]

Just owe someone money, and they'll remind you often the past exists.

[@rosealexander9007]

Or me pressing like on your comment that you made three days ago.😊

[@LuisSierra42]

@@rosealexander9007 Hello, i'm here to remind you all that the past exist

[@rosealexander9007]

Luis Sierra thanks 😊

[@vcoonrod]

Agreed. The past exists while the future is probability. Someday, we can likely time travel to the past, but if we attempt to time travel to the future, we would only be viewing the most probable future anticipated at that time. This explains why most prophesies are wrong.

[@mrolowu1]

🤣

[@ozarkmedia]

Stuff like this is why I have always had a love for physics.

[@gamergenics3340]

Stuff like this is why I can't sleep at night.

[@kleptokitty7414]

I think this is philosophy and physics together

[@snivla4]

Very fancy turntable that Matt . Got to say I really love your show you make the hardest science so easy to grasp . I have no formal education but I have a basic education certificate . That does not mean though I dont love physics in particular especially after suffering a nervous breakdown and that leaving me long term mentally ill. This show has given me so many real life answers and I also listen and watch Don Lincoln at Fermi lab and Dr Sutter at ask a spaceman. You are my mental saviours thank you professor .

[@Pewlander]

That's cool man. I'm happy for you.

[@MisterSixty]

TODAY: "I won't think about this today, I'll think about this tomorrow." TOMORROW: "I thought about this yesterday." YESTERDAY: "You're both lying. This hasn't happened yet." ME: Turns off KZbin. Turns on TV. Interstellar is on. Turns off TV. Takes 3 Extra Strength Excedrin.

[@yomama8391]

Haha nice

[@stephendevore]

Exactly! :)

[@coryryder9070]

my thoughts att first was he was gonna tallk about past present and future exsisting all at once but not exsisting ? lol i was gonna ask well when did it start and stop i mean we have or present time and our parents have there present time like our kids and those who came before how can all that be exsisting at the same time through generations where many past present and futures are happening via every body

[@tarot2.0-theawakening74]

TODAY: Is the day I bring that thought into my reality TOMORROW: I have the choice to wipe the slate clean or carry that thought from yesterday into my current reality YESTERDAY: Did I plant the seed for a new tomorrow? UNIVERSAL GRID: Lets stick this thought over here in the corner and see if it grows into something magnificent for our future.

[@logix8969]

This just reminds me of that George Carlin bit: "You want that now?" "Yes." "Well, would you like to try again?" and "Pardon me, do you have the time?" *Looks at watch* "When do you mean, now or when you asked me? This sh** is movin' Ruth!"

[@NickRoman]

oh wow, that's old one. ha ha

[@TheChristoph68]

Uncle George was Genius at watching people and things and then coming around once in a while and telling us about them. I miss him greatly!!!!

[@albertjackinson]

I'm not aware of what that's from. Can someone give a quick explanation?

[@logix8969]

@@albertjackinson kzbin.info/www/bejne/sJK1ZKaMpbl1b5o& It's one of George Carlin's comedy bits, he was a VERY smart man and such a legend

[@albertjackinson]

@@logix8969 Thanks!

[@marianosantopinto]

I love this, it under scale every problem you could ever have

[@jomontanee]

As humans who are bound by only 3 dimensional perception, we still have so many things we can’t understand or fathom right now.

[@atklm1]

We are not bound by only 3 dimensional perception, we have math and computers for examining higher dimensions. Like with string theory.

[@atklm1]

@@lewiscoacher7781 Why is everyone telling me things about CIA all of the sudden, is this some new meme or just coincidence? 🤔

[@Inferno5150]

The more of these videos I watch, the dumber it feels like I'm getting. Right about now a Connect-the-Dots coloring book seems to have a highly scientific aspect to it.

[@nikthefix8918]

Check that your light cone is not upside down.

[@sixmonkeys4796]

The mental gymnastics I had to do to visualize this concept left me with brain cramps. Thanks.

[@richperkins5192]

I just listened to this on my way to work and must admit it humbled me quickly 😆

[@TheMg49]

Nice presentation as usual, of thought provoking stuff. I've learned to think of 'block universe' constructions as being contradicted by our observations of our universe. I like the 'birds eye' view of the evolution of our universe, and the idea of successive 'snapshots' of the configuration of things. It's evident that change is continual and that those successive snapshots of the configuration of things are transitory. The past only 'exists' as our records and memories of it, and the future only 'exists' as our predictions, projections, and imaginings of it. I have a question for you that I don't know if you've already addressed in any of your fantastic videos. Is there a smallest increment of change (say, mediated by the quantum of action, for example) or is it an unbroken continuum?

[@hegemon3]

"There is a smallest unit of length. Called a Planck Length. Any length smaller than that is not even length. Length loses its meaning if it is smaller than Planck Length. This brings us to the answer to your question. The fastest possible speed through space is the speed of light. This implies that smallest possible time should be the time in which the Planck Length (The smallest unit of length possible) is traveled at the speed of light (The fastest speed possible). This unit of time is called a Planck Time. No one is saying that there cannot be a length less than the Planck Length or a time smaller than a Planck Time. But there is nothing smaller than Planck Length that we can study or observe. And nothing can be done in less than a Planck Time. So it is only reasonable to make these the smallest units because anything smaller than that doesn’t even exist. Going smaller than that won’t be sensible."

[@TheMg49]

@@hegemon3 Thanks Hegemon. (Edit: By the way, I checked out your channel subscriptions at your channel. Lots of great stuff there, and quite a few of the channels that I also subscribe to. While I'm writing this I might as well ask you about your take on GR's block universe.)

[@gmfreeman4211]

"If you change the way you look at things, the things you look at change." - I wish I could remember

[@shanechandler1018]

Best to forget ,then the truth will emerge

[@AlanSilva-nx9oo]

[@shawndavis7249]

When you can balance a tack hammer on your head, you will head off your foes with a balanced attack.

[@oldschoolman1444]

But only if you look at it. =)

[@MyouKyuubi]

"If you look at something from a different angle, then you're looking at it from a different angle." Ah yes, if only every everyone was smart enough to realize this. xD

[@andrewxc1335]

0:15 - Matt: "...in the elusive, ever-moving eye-blink... that we call--" Me: "SPACETI--" Matt: "the present." Me: :(

[@Staring_Wolf]

🤣🤣🤣

[@Philosoparts]

Is SPACETI a form of SPAGHETTI ?

[@RafaelRodrigues-rx9ry]

It sounds italian

[@duckwhistle]

@@Philosoparts it's part of Douglas Adams Bistromatics.

[@RickKasten]

Nice

[@nerd9347.]

“Time” is an illusion we create for ourselves in a state of perceived separation from everything. All times are now.

[@wesleywardrip6366]

Very insightful. Keep up the good work!

[@ericmalmstrom9943]

I have been watching for years, this is ABSOLUTELY the best written and delivered episode. The graphics were great, but the writing and delivery were amazing! Thanks, Matt!

[@Pewlander]

Seriously. Sad.

[@HauntaskhanHYPNOSIS]

I'm leaving this comment for my future self to read after the algorithm forgets that I watched this video and KZbin recommends it again proving the past exists. Lol

[@philiphobbs198]

" People take pictures of each other just to prove that they really existed". Lyric from a song by the band Kinks -1968 album.

[@GlossRabban]

Leaving a note to tell your future self, that we actually put the note here. To trick you into thinking you actually existed back then.

[@AverageAlien]

nah it was still created just now

[@the4fibs832]

this comment is for the history books

[@ConnoisseurOfExistence]

It won't forget...

[@enigmag9538]

I question if it's possible for the concept of eternity to be defined and explained in a way that we can truly understand, not just know the technical definition. I think something like this is understood through a state of being, an awareness, a connection where you feel a part of it all and so the understanding is innate.

[@anestos2180]

reality can not be understood through a concept because its thought and thought is created by memory which is a recording of the past but reality is always now. you see you can only understand something intellectually in terms of causation which is observation of the past so that put's you in a bind. that's why in eastern culture meditation was a key for understanding reality. if you want to understand the eternity get outside sit in a silent corner without thoughts and you will understand it.

[@rafaelgonzalez4175]

Eternity by definition is bar far longer than we imagine. Even knowing by visual information what a million years are we still have no clue how to perceive it. A million dollars is easy to imagine. A million years, impossible to imagine. Time is not a physical construct. Hard to even imagine what an hour is. The clock and the calendar constantly needs adjustment.

[@samnaamee6405]

Wait, so we're defining physical universe based on when we can observe it? But, doesn't an object exist even if no light ever leaves it / there is no observer to receive that light?

[@kosc88]

You can define it however you want to, I think "physical" refers to the part we're able to interact with, so not the whole universe (we can never observe/interact with distant universe according to current knowledge, but we assume it's there) Everything we observe might be infinitely small part of the universe for all we know, especially if you consider every possible timeline existing, and we're only just riding along one of them.

[@UnwarrenD]

I think it has more to do with the the speed of C(causality)which coincides with the speed of light. The speed of causality puts a limit on what events can be causally related. It has nothing to do with light itself. The electromagnetic spectrum and gravitational waves travel at the speed of causality and allow us to garner information about reality.

[@samnaamee6405]

@@kosc88 I think we're confusing the terms "exists physically" or "exists as far as I am concerned", meaning you can interact with it or not. If we do that, then dark matter doesn't exist - period.

[@samnaamee6405]

@@UnwarrenD OK. But we defined the speed of causality by the speed of light. Because light is the fastest thing we know of. We assumed that that is the fastest any change can cause another. Okay, I'll give you that, that we tested it thoroughly, that the speed of light is the fastest speed for everything we know of, to travel through the fabric of spacetime. This is the speed with which all vibrations in the fabric of spacetime travel. (Thinking of water wave). Now image some microorganisms floating in the water that can't interact with, and have never heard of or felt, light. And neither do they know of swimming, just floating. To them, the fastest thing they know that can travel in water is a water wave. (Discard the other marine life for now) I just think the physics of the water body should not be defined by the limits of their observability. They, in their infinitely small life, may have never witnessed any being that can bend and push the fabric of their universe (the water), to swim faster that a water wave. They have not discovered light, so they don't know of anything that does not depend on the fabric of their universe to travel. They know about their immediate surroundings, as far as their water-wave based telescopes have been able to pick up. And they can speculate what's beyond. They are small in the pond, and have been around for a very small time too. Oh sorry, I think I went on another tangent there... The thought I am trying to argue is, Should physicals concepts and physical objects be defined by their observedness. And Should the definition of time / instant depend on when objects can interact?

[@kosc88]

​@@samnaamee6405 You're bringing up dark matter, and while we cannot see it, or don't even know what it is, we know it's there, cause it does interact with what we can see, so it can be observed, but pretty much it's just mysterious stuff, a placeholder for theories to make sense. Then there's stuff outside our cosmic horizon, that probably exists, but you'll never know for sure and it will never have any impact on our world. Anyway, we're talking semantics here, and I'm not sure what your original comment even referred to, but there's a difference between observable universe and whole universe, so maybe that's what they meant.

[@4pharaoh]

When you look at a distant star, you are not seeing the past. You are seeing their "present" but later. When you look at someone three meters away you are not seeing them in the present, you are seeing their "now" ten nanoseconds later in your present (Present = here and now) even though you share the same now (now = rate that time progresses _aka: reference frame_ )

[@TheBigLou13]

Aren't you seeing their past in the present? I think you can't see their present in the present because light is so slow Future is "just" the present that hasn't been experienced yet.

[@RobKMusic]

As to your second point... you are still in different reference frames, but the difference is so small that it doesn't manifest in any meaningful way you can discern.

[@TheHellogs4444]

The present/now slice as defined in common use isn't the rate of time progression, it's the slice of time you currently inhabit, independent of rate. What your recent past light cone converges at You can have different rates and exist in the same now, like the earth and us moving at different rates because of different mass/gravity well

[@4pharaoh]

@@TheBigLou13 Try this: My past and yours exists as a series if seconds going back at least to our birth. *This is the definition of "Past"* What we see when we look at (say) the sun it is always 499 seconds from our present. We do not really see the suns "past" we see a single moment; the suns present 499 seconds later. That is not what we know as "Past" we cannot see the suns "past" 498 seconds later or its past "500" seconds later we can only see what is "present" for the sun (its here and now) 499 seconds later.

[@4pharaoh]

@Dr Deuteron Yes of course you are correct. Sorry.

[@technomage6736]

"Everything that happens now is happening now" "What happened to then?" "We passed then" "When?" "Just now!"

[@dynasticlight8706]

So, We exist in a non Existential occurring field .

[@Masheeable]

"When will then be now?" ... "soon..." ;-)

[@daveharrison1566]

Such a quality film to this day 🤣

[@rhettmeyers474]

Haha, this popped into my head about 2 minutes in and figured I’d find a comment about it

[@thomasnesmith5426]

Well done.

[@yehoo911]

If we were to travel from Earth at the speed of light to the star that we recently observed to be exploding… what would it look like to us when we arrive to the destination? Would we see new planets being formed from the explosion, and would we see Earth as being billions of years older than when we left it, while we, ourselves, would still be the same age as we left?

[@SnoopiProGamer2]

No, if you travel 5 light-years away from earth at the speed of light: - you would have traveled for 5 years, i.e. you'd be 5 years older - you would find whatever space may look like 10 years after a supernova (bc it took 5 years for the light of the explosion to reach you + 5y for you to reach that space) - you would see the faraway earth exactly how you left it (as it takes 5y for the light of it to reach you, and that light started traveling through space right after you)

[@yehoo911]

@@SnoopiProGamer2 Thank you for this! I can finally visualize it properly in my head

[@OscarMroson]

@@SnoopiProGamer2Light doesn’t experience time though

[@OscarMroson]

@@SnoopiProGamer2every moment from its creation to its destruction is experienced all at once by the photon

[@OscarMroson]

@@SnoopiProGamer2meaning it would be the same for anything travelling at the speed of light, which is just further evidence for the block universe

[@XTsamurai]

This is so deep and wonderful. Especially because I have no idea what he’s talking about... but it does sound wonderful 😊

[@Skynet_the_AI]

......riiight... i get it. Just kidding. I don't get it exactly what you are telling...😊

[@Skynet_the_AI]

Sorry for my english is great no so much though... do understand, you do!?!!!!!!!

[@davidhanley6135]

Shakespeare level writing to get such quality explanations of very complex topics into such short videos. I know this has been said before but also massive props to their visuals people, they are spot on and always add to the understanding of a topic.

[@Temp0raryName]

Naa PBS is way better than that plagiarist.

[@Skynet_the_AI]

​@@Temp0raryNamesays Sciencephile the AI. Ha.😊

[@Skynet_the_AI]

​@@Temp0raryNameAlso, nice touch on the PBS reference... i totally get it ha ha, plus i know you already know i know that We know what im talkingabout....

[@darthdewit6814]

This feels like an explanation of everyone’s perspective being different at all times.

[@stoneysdead689]

Not really- these effects occur over huge distances- locally everyone pretty much experiences the same thing. Otherwise, the world would be pure chaos. The effects of things like time dilation on someone say walking or riding in a car relative to someone standing still on the sidewalk are so minuscule as to be nearly impossible to even measure- and that's even with super sensitive equipment developed specifically for that purpose. Humans could never perceive the difference nor would it affect their perspective in any significant way. The reason humans all have a different perspective on the same event is more down to psychology and the way we sense the world around us. We feel like we're totally objective and just see whatever is there but- the reality is that our field of vision is limited and we can't constantly scan around and actually look at every detail of everything going on around us- so instead, our eyes see what they can and our minds fill in the blanks to complete the picture. This is where the differences in what ppl see and experience start coming in- each person's mind fills in the blanks a little differently.

[@q09876543]

I find this topic on time interesting. As I sit here listening to the tape, I have come to realize that my perspective on time differs from other people's because we don't share the same events. So what is past present and future for me is altogether different then everyone else's. It's true that in a general sense we share certain similarities in our walk in life, but the outcome differs from person to person. Still, one thing is true, all our experiences as event's has a energy signature to it that can effect other future events. This is what makes up our reality.

[@darthdewit6814]

@@q09876543 and technically speaking it’s physically impossible to occupy the same space time as someone else. Making all perspectives different at all times. That’s what I took from this as someone not overly educated on the topic. Really interesting stuff.

[@q09876543]

@@darthdewit6814 Your right in that when it comes to physics, I'm not the smartest duck in the pond, but I do know how to swim. so when it comes to time, I see it through the eyes of the sun. What I mean is, light needs to travel 8 minutes to get to the earth. So in the perspective of light, it's in the sun's now. But once it leaves the sun heading into space, the sun becomes lights past and space is in it's now. 8 minutes from then, the particle of light will enter the earth's atmosphere leaving space behind. Now space becomes the past and earth is in it's now. a few moments later, the photon hits a plant, giving the plant energy to become food, thus ending it's journey. All this was laid out even before the photon left the sun, for everything is in motion. The interesting thing to all of this is, the only thing that changes for the photon is it's position in space. But time wise, everything is in it's now.

[@Gamerock82]

Welcome to the aftermath, of whatever was really happening, when the story of the tower of babel was written. I firmly believe it went far far further than the languages being confounded. Whatever the reason was everybody suddenly began noticing perspective. Maybe inflection and motivation and simple co-operation suddenly became confused. Drove even family apart. Languages happened later. Scary thing is it is happening today and people argue all the time over nuance and semantics. Until we as a species find a way to get along, we're just gonna be samples in somebody's fossil collection, that proves that for all our grandstanding, we couldn't figure out, what cyanobacteria knew all along.

[@Aqua_Toad]

I've believed this entire concept of time for over a decade and it makes one feel crazy at times and stuck almost always.

[@randymctavish3728]

Awesome mind bending video as always brother

[@barryturner8994]

"Your past shall determine whether or not you see any presents in the future." - Santa Claus🎅🌌

[@pranavflame]

Ah yes, Clausmology

[@barryturner8994]

@@pranavflame Clausmological Constant. 🎄

[@idreesAlmiklafichannel]

@@pranavflame xD

[@jcoats1203]

Lmfao!!! Very clever.

[@greasycock455]

we call upon Sammy Klaus every summer.You better be nice.better BE good. 6th dimensional chess.

[@SloneStudios]

"lets ask the intelligent aliens to shut down their factories so we can study these bacteria." best line ever. haha

[@MTSVW]

These are the best visuals I’ve seen so far!

[@iandavies7991]

Time is a dimension. What if the universe from the beginning to the end happens in an instant. Just one moment, but for some reason we experience it one piece at a time

[@rapidone9072]

This thought has haunted me lately... I'm pretty sure you right on the money... I'm trying to Dr strange seance with my future self. Its kinda like the flash being too soon ...

[@facundomarino10]

LOVE whenever physics and philosophy meet

[@PKNproductions]

What's really fascinating is when physics brings up new versions of old questions. Adherents of various religions have long debated whether God has already determined your fate and whether your actions are an inevitable part of God's plan OR if you have power of your own actions to change the world around you and control your own path. This video tackles almost exactly that question, just expressed in a different vocabulary and informed by advancements in what we have learned about the nature of the universe through the scientific method.

[@tonicrvnts]

I don't 🙄 Physics a science that deals with matter and energy and their interactions. It is objective measurable while philosophy is open to debate.

[@deebee4575]

@@tonicrvnts For all we know it may not be limited to only matter and energy.

[@tonicrvnts]

@@deebee4575 Yes, you are right. My point is science is objective and philosophy encourages debate (nothing wrong with it)

[@MrThelegodudes]

@@tonicrvnts I don't think philosophy and science are necessarily mutually exclusive; you can have a new scientific discovery that prompts new philosophical questions. Scientific discovery and philosophy oftentimes don't cancel each other out, but rather complement each other. The objectivity of science isn't undermined by intermingling with philosophy, in my opinion.

[@Asteroid_Jam]

Nobody: KZbin at 2 A.M: Does the past really exist

[@zes3813]

wr

[@PicaDelphon]

Goes and Watches Videos from 2015-2018, Yep it Does..

[@wolfshootproductions2392]

@@PicaDelphon actually those videos are present running from a youtube server computer now, the data was created before, that you can rewatch in the moment, but the physical past is just an illusion imo

[@sc1ss0r1ng]

Hahahahahahahaha, it's literally 1:50 AM here and this pops up in my recommended. Freaking KZbin, lmao.

[@Mitchell_is_smart._You2bs_dumb]

if the past didn't exist, how would this meme be so dead by now?

[@atlantic_love]

I find it enlightening that I change my direction of movement, and anything that I encounter at that moment was once a part of someone else's past, and soon to be someone else's future. Anything coming from the direction I was facing will no longer be a part of my future or past. I hope that I have that right. Which makes me wonder if someone could come up with a device that captures the movement of light from different direction, resulting in shapes right in front of us that we might not be able to see with the naked eye.

[@JKDVIPER]

11:25 The speed of causation spells it all put for me when it comes to time. 💯🥊

[@technocore1591]

If reality is entirely subjective then this video is my mind trying to explain it to me.

[@markoates9057]

The spiritual awaking begins.

[@d1ngd0]

Unfortunately my brain is not smart enough to also comprehend it.

[@AuntBibby]

@h4ck573r only an emo/goth brain-in-a-jar would say they didn’t exist 🕷🧠🦇

[@AuntBibby]

@h4ck573r lol i don’t think u understood what i meant: en.m.wikipedia.org/wiki/Brain_in_a_vat

[@technocore1591]

@@d1ngd0 the struggle is real

[@PowerhouseCell]

*Who else is watching this in 2024?*

[@marcusklaas4088]

I'm watching this in your 2024, but not in mine.

[@ReaperEOD]

Remind me to come back in 4 years to this comment if I or we are still around.

glad to hear we survive. how about dropping me a stock market tip?

[@BosieYouTube]

@ Invest in bitcoin and Apple... sorry thought this was 2003.

[@aketchupman5103]

Sorry, 3024 here

[@carlover78]

4:21 deeefinitely would be interesting to see a video diving more into this topic!!

[@MysteriousWorld.031]

This starts to make sense when you think about how we percieve stars. If we observe one star that goes supernova 5 million light years away, and then another star that goes super nova 6 million light years away, each of those events happened a million years apart, and we just happen to be at the oberservable point to witness each at the same time.

[@johnmcguire4422]

Au contraire…in the case you use its only the perceived light in the “now”!

[@Notapizzathief]

As a Philosophy student, I can confirm, Physicists are wizards.

[@Jolly_Rodger]

Dan Banks Of course they are. Look at them - they managed to create entire Universe out of nothing and didn't even stopped there. After they created our Universe they created an infinite multiverse from the same nothing again. They use something like absolutely abstract math and create something "physical", like space and time out of it. Then they turn around and take something real, like matter and compress it into infinitely dense and infinitely small nothing again. Just as you said it - wizards. Or maybe just charlatans.

[@khadkadipson16]

Physicists are just a bunch of atoms studying about themselves.

[@albertjackinson]

"Any sufficiently advanced technology is indistinguishable from magic". --Written by Arthur C. Clarke

[@Jolly_Rodger]

Albert Jackinson Yes, but what technology allowed our scientists to magically create the whole universe out of nothing?

[@azertyuiop432]

@@Jolly_Rodger Sure you're right, love science, but I don't like scientism.

[@alanbarnett718]

"We are here and it is now. Everything else is more or less guesswork." (Didactylos of Ephebe, as presented by Terry Pratchett.) I love that Newton's brain is as big as his wig, by the way!

[@mr.evasion]

Close as the Fox

[@stefanfritzsche]

..but are we really ?

[@alanbarnett718]

@@stefanfritzsche I am. You I'm not too sure about.

[@stefanfritzsche]

@@alanbarnett718 maybe you are the only real observer of the universe. then again - what are the chances ;)

[@alanbarnett718]

@@stefanfritzsche If there really is one sole observer of the universe... then from my point of view, 100%!

[@celiogouvea]

It is uncertain whether we are progressing towards the future or regressing towards the past. If an external observer from another universe is moving in the opposite temporal direction, they could witness our lives pass by in a mere second and reveal to us what is to come in our future, the information would be valuable to all universes across one particular temporal frame.

[@ZiplineShazam]

Sometimes I wonder what happens everytime that we view old video of ourselves from the past ? If you think about it. . .the ability for humans to view their own past (Film, VHS, DVD, Digital) is a relatively brand new technology. I also wonder if viewing our own past is something that should be avoided ?

[@gersonencarnacion3744]

​@@ZiplineShazamWhy viewing our own past should be avoided?

[@ZiplineShazam]

@@gersonencarnacion3744 It seems that one of life's processes is that we are supposed to "Let go of the past", and I think, as we mature, we naturally forget or let go of what needs to be forgotten so that we can evolve. When we literally rewatch our own past through a television screen, it seems to keep us stuck or brings us back to a place that is gone and can no longer serve us. During the lock down I had some old VHS tapes transferred to DVD. . .things I haven't seen in 30 years. This brought up a lot of emotions (good and bad), but overall it caused me to go through a very unexpected depression. Viewing people from the past, that are no longer living is not a natural process. (In my opinion)

[@vancedbane6347]

Honestly the best video on this topic.🙏❤️

[@typhondio0000]

Before making one of my videos explaining this similar subject, I had no clue that videos like these were around. It makes me comfortable knowing I am not alone in these thoughts and scientific discoveries.

[@OldSoulNewLife]

Him: Depending on how you interpret quantum mechanics Me: I don’t..

[@mr.almezeini647]

Fair point you win...

[@jso19801980]

this channel blows my mind daily

[@ogedeh]

Every time someone hits play, you gotta explain all this over and over again

[@HelgaCavoli]

"That's a topic for another.. well.. time" 😂

[@leveljoe]

A later now. Future does not exist.

[@NewMessage]

I don't feel so bad about not being 'first' now.

[@kaizokujimbei143]

To some observer in the Universe your present is their past, so from their perspective you are first. :D

[@jasonwooler801]

Ah hahaha. I see what you did there

[@ivan_dramaliev]

You forgot to also quote 'now'.

[@NewMessage]

@@ivan_dramaliev Touchee.

[@GGoAwayy]

Psychologically, why did you ever feel bad about that anyway?

[@ShutUpWesley]

"How many slices?" "One at a time Please"

[@melissajenniferjones9959]

So "Dark Shadows" was ahead of it's time!! 😳🤯

[@dysamoria]

Here's a problem I continue to have with this stuff: Isn't this just about observation and not existence? Subjective perspectives don't define that which exists, just what is observable from those positions. Observable or not, things exist and things happen, but depending on where you're located, the data that tells you about it reaches you at different times compared to someone else's position. It's like calculating the observation capability is getting confused with idea of defining the actual existence of things and events. What am I missing?

[@pereii]

Well for example, you have the subjective experience that you exist in the here and now. To you, that is your “actual existence”. So let’s say at time 0 you are in bed and that is your present and your subjective experience of you actually existing on your bed. However, depending on the velocities and direction an observer can see you at time 1 where you’re now out of bed, essentially into your future, at the very same moment you are still at time 0. So your subjective experience aside, objectively your future (to the observer) and your presence/past (your pov) exist in the same moment in reality. The question will then be, what is the definition for “actual existence”? To the observer your future self is “actually there and existing”. But to you, your future self does not “exist” yet.

[@therealstephenschott]

Could the speed of light have something to do with this?

[@whizzer2944]

@@therealstephenschott. In a way yes apparently the faster you go the slower time passes go figure.

[@UnwarrenD]

​@@whizzer2944 It has to do with the way spacetime interacts with mass. As you begin to travel faster, you also gain energy. E=mc2 (energy mass equivalence) you become more massive too. When you approach relativistic speeds, time within your inertial frame of reference slows down relative to everything outside of it. If you could actually reach the speed of light, time would stop dead. You would have effectively created a black hole. This is one of the reasons that nothing can travel faster than the speed of light. It would also take near infinite energy to accelerate something with mass to the speed of light.

[@davidl9232]

So ,to me, you're saying you're viewing from a god angle, only you view it as a mount Olympus or Hindu god existence. Neptune holding Nep is as powerful as Jupiter. Yet Jupiter is the power. Are you Jupiter or Neptune the all powerful I know that's cartoons, but to me it seems the basic problem

[@TunaFreeDolphinMeat]

"Time is what stops everything from happening at once." Helps to decrease side effects caused by temporal displacement. But then, so will a glass of wine

[@fntime]

tuna, I agree! Time may be the string which holds the 'time beads' gives them order and sequence which might be determined by your or another's consciousness. If now exists differently in different part of the Universe then 'now' is relative. I think part of the problem is our conditioning, it creates a mindset that needs 'planck time' to follow a particular sequence. Here's a playlist from my channel, I hope you & all might find it interesting it's called TIME kzbin.info/aero/PLEC8E0371526EC9AE

[@AboxofMonsters]

It is the Sun and its planet where in between the illusion of time rests. There is no time in space.

[@soniao100]

@@AboxofMonsters ?????

[@AboxofMonsters]

@@soniao100 Read the lost book of Enki that’s an example of time dilation that’s vastly different from ours .

[@JaneDoe-zc2zn]

The past still exists. Physically. The future is the past. So is the present. And the present past as we conventionally see it, or tend to express it. Determinism because of special circumstances. Uh, big things happening.

[@apburner1]

It seems to me there is obfuscation about the state of the universe NOW and when that information actually reaches us. There is still a NOW, we just don't know about things that are happening at that instant.

[@restlesscow2137]

The point is that all perspectives are true. Someone at a standstill Vs someone travelling incredibly fast will perceive events etc happening at very different times but both will be correct and true. There is no universal "now"

[@undercoveragent9889]

I agree. There is a difference between the 'current configuration of the universe', the Present, and 'the subjective experience of the Present'. For instance, if the Sun suddenly exploded and then disappeared altogether, an observer on Mercury would know about it before an observer on Earth knew about it, right? But just because we can still see the Sun until about nine minutes after it has disappeared does not mean that the Sun did not explode nine minutes before. We are using the term 'now' in a very vernacular manner. 'The sun is shining right now', for example, actually means, 'I am experiencing events that occurred nine minutes ago'. Right? The Sun has moved on with its life and the most precise information you have in relation to its current status is 'old news' from _its_ point of view. When you read the morning paper and find out that some famous athlete died last night, you don't consider the moment you find out about it as being 'the time of death', do you? I think that only a single moment, the Present, exists and that the Universe is going through constant change inside it. Personally, I think the introduction of 'time' as a variable that represents something that actually exists independent of 'energy gradients' is why Physics is coming to a dead end. Dark Matter? Dark Energy? lol I can see how the deductive reasoning is clever and how it seems to account somehow for the behaviour of galaxy systems but it's a lot like trying to hold on to Geocentrism by cleverly accounting for the strange motions exhibited by planets with 'science' that inevitably leads to a scientific 'cul-de-sac', so to speak. You would have to 'fix' problems by introducing new variables that disappear like infinities in calculus when you think in terms of _Heliocentrism._ Right? Well, I think that 'spacetime' is the modern equivalent of 'Epicycles'. Sorry to go on, lol... Just saying. :P

[@restlesscow2137]

@@undercoveragent9889 I think what you say isn't wrong, however once you introduce observers things do change. Time dilation is a very real phenomena. The two observer's may record the same event happening at different times but both are equally true, neither party is wrong with what they experience. Hence if someone where to reach fast enough speeds and the other stay here on earth, time would pass far slower for the faster party than the "stationary" one

[@undercoveragent9889]

@@restlesscow2137 I would say that what we refer to as 'time dilation' has less to do with a thing called 'time' slowing down and more to do with the effect that acceleration and gravity have on a system's ability to dissipate energy. I think that 'time dilation' is the same kind of thing as the difference between trying to boil water at the Earth's surface and at the top of a mountain. We don't consider that 'elevation' causes 'time' to speed up at high altitude resulting in water boiling sooner, do we? No, we have realized that atmospheric pressure effects the temperature at which water boils. I think that accelerating an energetic system is analogous to lowering the altitude of the water you are trying to boil. So, it is not the case that acceleration/gravity have an effect on how quickly something called 'time' passes by but rather, acceleration/gravity effect an energetic system's ability to dissipate energy into the environment. Imagine, you perform three experiments involving throwing a ball. In the first experiment, you use a precise amount of energy to launch a ball of a precise mass and measure the trajectory, velocity, height, wavelength, etc., with respect to the position of the ball-thrower. In the second experiment, you use the same amount of energy to launch the same mass but this time, you are stood on a platform that is undergoing constant acceleration and again, you plot the curves with respect to the ball-thrower. In the third experiment, the ball in launch in a region of low gravity... the moon, let's say; same energy, same ball, plot curves with respect to the ball-thrower. Now, we have three sets of curves, right? And what we find is, when the ball is thrown in the first experiment, it land at a particular distance in front of the thrower, right? But in the second experiment, the distance between the ball-thrower and where the ball lands is slightly less than in the first experiment. And in the third experiment, the ball travel a lot further. It is the same energetic system, operating in three environments with three different outcomes that can be explained by either 'length contraction and time dilation' _or_ 'acceleration/gravity increases the inertia an energetic system has to overcome and that impedes its ability to lose energy to the environment in accordance with the Second Law of Thermodynamics'. I like the latter better because it gets rid of the concept of 'time' on the one hand and on the other, it forces us to consider 'spacetime' as being simply a particular configuration of a particular amount of energy. 'We' currently think of 'spacetime' as being a kind of 'box' which contains all the energy in the universe and as a result, we have to resort to dark energy/matter to solve 'epicycle-type' issues with the current model. But if we evaluate 'spacetime' in terms of 'energy' behaving in accordance with the 2nd Law, by including 'spacetime' as some proportion of the energy conserved by the universe, we might account for the 96% of the universe that appears to be missing and the 'epicycles' might magically disappear. Poof!!! ;)

[@restlesscow2137]

@@undercoveragent9889 I'm not sure, I thought time was one in the same with material.? If you're correct, I would ask what the standard time is in the universe then? Is it what we perceive here on earth? Or the conditions of a small star or black hole? Time Dilation definitely has real effects on how events play out, it's in the laws of relativity. I don't know much about this subject, just a curiosity and interest as I'm sure you can tell by my poor arguments. But spacetime is exactly that isn't it? Both interwoven. Once material appears, not matter what it is you get time as entropy occurs. So massive gravitational pulls like those in back holes will surely impact the flow of time in that local area, events playing out far slower that what we would perceive? Again, not good at the subject matter so please help me understand

[@josephbanatlao6461]

The past is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present.” Kung fu panda

[@Storm_x]

The writer who came up with line should have got a bonus

[@cobalius]

Nawww x3 will there be chocolate in it?

[@G11713]

@@Storm_x it's not original (not that it matters)

[@pity4777]

@Jang-geum Seo really? Do they have a synonym for now that means gift? I'm genuinely curious

[@NoConsequenc3]

@@Storm_x it's been around for years and years, they didn't come up with it

[@dreammfyre]

Isn’t it very significant that you see into the past(like observing a distant star), but not into the future? EDIT: I personally think time is an illusion. All there is constant change. There is only now, and everything else is either predictions or memories. When you see the past of the distant star it’s just because of the inherent “lag” of the speed of light.

[@seionne85]

I thought the same, surely accelerating wouldn't skew the horizon to the point you see the future? He did say I think 200 year difference, which would still be 13b in the past, but wouldn't its present still be its present? Even though we will never see it bc of the distance?

[@seionne85]

@@reeeeeeee2143 ive tried learning the Lorentz transformations, i haven't learned enough of the language yet (math lol) but even if 2 observers see the same event happen at different times, that's still just varying degrees of the past, nobody could ever observe a future event, some word play could be used around black holes i suppose, but you still never see the future even near the event horizon, just a slower progressing present? Or something 😅

[@jessstuart7495]

Distant locations don't share the same clock. Before you interact with (directly or indirectly) a distant event, it isn't part of your reality.

[@seionne85]

@@jessstuart7495 true, however if we could communicate instantaneously I firmly believe we would agree that the future has yet to occur, and that we can only observe each others pasts, to varying degrees depending on our acceleration

[@seionne85]

@@reeeeeeee2143 I saw your post on another comment where you said that even with time correction the observers would disagree on the time it occured. This is what I'm talking about! My problem is if we are different distances from an event, then it makes sense that one of us will see it first. And if we corrected by using the difference in our distances to the event we should agree on the moment in the past that it happened, even if its further in the past for one observer. All this still works with a real present, unless we disagree even after correcting for distances Edit also i don't see how your example shows any observers future? Supposing you agree that for example seeing something 13b ly away as it was 12b years ago is not the same as seeing the future?

[@dalekosak7611]

I have had extensive discussions on time and space with students when I was a college prof. I admit I would quote what I had read but I really do not understand all this.

[@Divedown_25]

There is just present everywhere in the Universe, then time goes slightly faster or slower relative to where you are but you can never repeat what moment just was, independent where you are in the Universe

[@Omgits7ito]

Why does youtube show me this content when I should be sleeping.

[@ArchlordZer0]

Because your computer loves you.

[@xtesieeee]

Fr tho it’s midnight and I got work in the morning

[@toasttghost]

Yall the ones with phones in your hands when you should be sleeping 😂

[@josephramondino5393]

I just can not express how amazing of a job you do in breaking down complex concepts into an easy to understand explanation. Keep up the great work!

[@codenamecatatonic8894]

I’m as confused currently as my prior self was ? At least that’s a constant.

[@eddybadillo1461]

That was one of the best yet. Integration of the observer prospect cannot be overlooked. Einstein speaks from the grave

[@RonArgyle2011]

The factory shutting gag at the end was absolute gold. Thanks for being there PBS crew.

[@fuckyougeorgebush]

“Today a young man on acid realized that all matter is merely energy condensed to a slow vibration, that we are all one consciousness experiencing itself subjectively, there is no such thing as death, life is only a dream, and we are the imagination of ourselves. Here’s Tom with the weather.”

[@danascully1248]

Sounds like Hinduism

[@xyzyzx1253]

Sounds like Bill hicks😁

[@kattubenews5833]

You said it correctly. We only change our costumes to play a new role....

[@ellobosolitario879]

That is exactly right. thenickoftime.space

[@YDDES]

Today a man without any experience of acid realized that the universe is made up of only one photon, running around like the electronic beam in an old TV, Drawing up the universe again and again. That’s actually quite possible,, Because it can be everywhere in No time at all, according to the theory of relativity.

[@JClaus1221]

This almost blew my mind as much as the fact no one really has blue eyes, it's all a trick of light. Everyone on earth has brown eyes, just different levels of melanin.

[@JoseCastillo-wx6jd]

Excellent video. Congratulations.

[@Hykje]

If this guy had written "Tenet" it had been even more confusing.

[@ndbd9drn]

Or more intriguing.

[@fansongyi]

Tenet is pretty garbage. It makes no senses logically

[@magicmulder]

It would have had going to have been.

[@mav2553]

I just found the 4 guys that saw Tenet. I knew they existed, I just had to search the past

[@magicmulder]

@@mav2553 I know many people who watched it but few understood it. (I like to believe I did, but then again I'm a mathematician.)

[@TheMrCesarcardoso]

Is the future a temporal black hole, and the present its event horizon?

[@Temp0raryName]

One which we are progressing towards, one second at a time, yet doomed never to reach it?

[@SaintJames14]

the present is spaghettification. The "remembered" or relevant past is the event horizon, I would think. The future (the one all respective locales share, or unshare?) is, yes, an anachroncal black hole.

[@williamcolley4182]

I often walk down the road and imagine how something I do now will affect a person I will walk past in the distance. As in, can my current self causally effect the future of a stranger. And that's why I don't have any clothes on officer

[@miker20]

From a psychological perspective, it seems each sequence of close encounters/future changing events are in fact eternally linked, however, how is it that those with extreme cases of PTSD are able to sort of subconsciously travel to what seems to be a set future when you’re reliving it with your memories.. what I get from study of causality points for me that everything we do is simply everything we’ve done

[@brilliantlights]

This is the best explanation on this subject with visual representations making the ideas very clear.

[@DTM-Books]

I gotta admit, this discussion reminds me of that scene in Spaceballs where they pull out the videotape and end up watching that exact moment in the movie. "When will then be now?" "Soon."

[@346UNCLEBOB]

Best graphics I've seen on this subject.

[@hazrobson2305]

Well said. This is the clearest I have ever heard it

[@jackfergus7437]

“The passed, the gift and the void beyond awaiting the emergence of creation” - KamiKai Thank you for inspiring grander contexts! 😄

[@Cscuile]

Vsauce: The Past and Future don't exist. Vsauce: Or does it? *Vsauce music intensifies

[@dakotadad8835]

Micheal is always watching 😳

[@JiveDadson]

Vsauce is Vstupid.

[@Valdaur]

@@JiveDadson Why?

[@elg929]

Absurd.. how did Einstein define non-moving, stationary now? Always moving in time? Again, unrealistic and only in our minds. Watching yesterday does not bring it to the present. Go ahead and “see” the future. Oh wait, it doesn’t exist. Math BS that Herr Einstein invented is what special relativity actually is .. in the real world and inapplicable yesterday, now or tomorrow.

[@THETRIVIALTHINGS]

Vsauce would actually start with something like; Hey Vsauce! Michael here and this piece of toast doesn't exist. It exists now, but it won't when you watch it. But does it really not exist? *an hour later* You don't exist either. *end of the video* *Viewer contemplating their non-existence and the lack of consequences of their actions*

[@trevormcvety7315]

The one where the more you know about its speed makes its location impossible

[@cedb3360]

I like the way Newton's wig is actually super thin and only serve to hide his massive cranium.