Does the Past Still Exist?

[@Master_Therion]

I've been patiently waiting for Sabine to make a video on this topic. It's about time.

[@brothermine2292]

It had to happen.

[@sparkyfromel]

it's all in the past now

[@FarfettilLejl]

This video had always existed, you just needed to wait for it

[@MeppyMan]

I see what you did now.

[@w3vjp568]

Dad?

[@roboliver623]

My teenage son passed away from an AVM stroke recently and I'd like to believe that part of him still exists out there in space-time.

[@QUBIQUBED]

Sorry for your loss.

[@flattery1111]

Sending love and light ✨✨✨

[@garychambers5850]

Without a doubt, your son is so much alive in Heaven! ✝✝🙏🏻🙏🏻

[@pressureflipin1992]

Sorry for your loss, I believe that, that is a thing. I always have.

[@ελευθερία-ε2ο]

Energy never seizes to exist, it transforms. - Einstein

[@kurisutofusan]

This is the first video I see on this channel. This is very refreshing to have explanations without all the usual background music, hyperactive ton of speech, or lots of graphics moving around! The calm tone of the video is very good for learning!

[@whitetornado603]

Same here. perfect for learning

[@sonyavincent7450]

Absolutely love videos without background music.

[@rupes96]

I agree, ton of video looking for watch time and less explanation.

[@mireazma]

Because she's not American. I'm glad there's someone else who hates the "hyperactive tone of speech" 👏

[@MakiPavlidis]

I do love her channel's videos, and this is a big reason. However... the recent hydrogen power video would have greatly benefitted from 90% less "under pressure" gags. 🤷

[@aregularguy1957-vu5lk]

I am amazed at the ability of the mind which can discover these concepts, hear the information, understand all of it and not have massive headaches. I'm sticking with my now.

[@Gliese380]

The past haunts me every day, whether it still exists or not.

[@stephenpalmer-zh9dq]

it is ALWAYS THERE

[@margaretmorrissey2714]

It's not the past doesn't haunt us, it is us who haunts the past.@@stephenpalmer-zh9dq

[@stratocasterblue]

Your thoughts are not you

[@SsuperNnova]

Felt

[@stratocasterblue]

If you start exercising everyday the bad thoughts will stop but you have to everyday, its a way of telling your mind what its going to do

[@christinablacken3043]

This video made me realize how often we are watching the past. All KZbin videos we watch in the present were made in some recent or distant past and can be played actively as if they are now in the present. All media and entertainment that’s recorded is that way. I think that’s why stories play such an important role in human development - story is time travel.

[@darith770]

Thanks Capt Obvious

[@UNIRockLIVE]

Only if its honest

[@UNIRockLIVE]

​@@darith770poor trolly mad in the comments

[@stuart23969]

History books can take me back

[@the_kombinator]

Memories too.

[@SuperWingram]

I do love the dry humor woven into the ‘story telling’ and then referred to again randomly…a stand up comic schtick that amazingly turns a physics lecture into a conversation between friends. Brilliant.

[@mokeish]

Physicist humor =]

[@davidjoseph7142]

Does the past still exist? Depends on whether you remembered to hit save

[@miashinbrot8388]

Yes, I love Sabine's dry humour also. The first few times I watched her videos I didn't notice it, because it's subtle -- but it's worth watching for.

[@miashinbrot8388]

@@mokeish Not quite the same as math humour, but it's all relative. ;-)

[@lnyitrai]

I love (and respect) her, but I think all the puns are horrible, borderlining disturbing.

[@NeilBaileyF1]

I was with you all the way until 0:22…..I can now tell the future thanks to you though, because I am going to the pub in 15 minutes to drink heavily to try to make sense of all this.

[@astrumignis2030]

This Video is a Disaster!

[@messengeroftruth7306]

Have one for me..I would join you but my doctor says I can't mix alcohol with the 15 meds I'm taking..it might cause me to not worry or be happy..that's not allowed anymore..how sad

[@waynepatrick1646]

So will i

[@grandnatty172]

Who else is watching this in 1950?

[@rmoacreyzeus]

😅

[@AndyRamirez-g5d]

I'm watching in the year of our Lord 3084

[@surfingonmars8979]

1950??? WOW….how is it in the future!?!?!??!

[@saadshinobi3859]

Imagine if it's not a joke and he's really from 1950 💀

[@AndyRamirez-g5d]

@@saadshinobi3859 The question of time, does it exist, or not , is still being debated in the year 3084.

[@edwardsp1916]

What blew my mind is that when Sabine gave examples of 'now', she knew I was watching the video. Amazing, great video.

[@deciduousrex1219]

You hadn't disappeared yet.....

[@DukeJon1969]

It's uncanny

[@struggleboy2927]

🤯🤯🤯🤯🤯🤯

[@dylanmorrow263]

This gonna blow your mind.. but when you read this you will be watching again 😱

[@linuxbeastmaster9192]

Time is irrelevant what happened already happened, what will happen will happen, understanding this will free you from the clock. If time was relevant talking about this would be a waste of time.

[@jimihendrix4376]

Not exactly sure about what you said but i did enjoy the way you said it.

[@bvbxiong5791]

she lost me at the intro when i didn't have enough time to read where the little hand and the big hand were pointing to.

[@jesusislord-ht1nj]

You have to be a Godless moron to think anything she said is worth more than falling asleep to.

[@BillKapriII244]

Lmao

[@DragonballZTime]

Same brother.. I had to have a fap session bc she was bloody hot talking. The video was over after it. I guess she is the past now

[@PoliticalTalkAbout]

Sabine is absolutely right: I watched this video tomorrow and plan on watching it again yesterday.

[@Chrisamusic1]

YES it does! I'm sitting here in the quiet English countryside, on a dark winter's night, looking high above me, into a black sky full of stars; many of which are now dead - but because of my unfathomably distant vantage point, are still up there shining, still ‘alive’. Could it then follow that an alien being sat on the other side of the galaxy, looking our way through some kind of ‘advanced super telescope’, could maybe - just maybe, see my late mum and dad, meeting for the very first time on that dizzy late summer's evening they used to tell me about? Believe it; somewhere, everyone and everything is still alive. ❤️

[@Chrisamusic1]

@@nautilus1872 Thank you.

[@Jgriffin0808081]

I got a lot from your comment aswell, thank you

[@Muirton66]

Very thought provoking and a lovely comment.....good luck to you.

[@Sashazur]

That alien would be seeing your parents exactly the way we see distant stars- something that happened a long time ago and of which we can only see an image. That is still “reality”, but it’s beyond us in a way; we cannot interact with it or influence it.

[@4ever9zxyme]

I agree with the others . That’s such a beautiful deep ending to your comment . “ believe it ..somewhere , everything is still alive”

[@FailBucketFilms]

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.

[@phantasticmrphasma9874]

This is the problem with knowledge and research. Some people are not naturally intelligent enough to comprehend it. Some ask “if a tree falls and nobody is there to hear it, does it make a sound” This stupid ‘but how do we know’ mentality reveals those who lack intuitive intelligence. It is a self-centric viewpoint. Light exists. Light travels at particular speed. It takes a relative (i’ll use the word) duration for light to travel a set distance at that speed. Yes those two events happened, at a duration we measured to be, a million years apart. These things are true. Focusing on the ‘meaning’ of this is self-centric. Those things happened and those were the factors. But that does not mean time exists or that the past still exists. The explosion that caused the light happened and then ceased, but the light created continues. I don’t know how or what exactly causes these phenomena or if existence is finite or not or even if there IS actually a creator, but it’s the ego that drives people’s theoretical wandering, beyond the realms that we are capable of. Time does not exist. It is merely a word we used to label a duration of moments. Time travel will never be possible in any way other than a technical way (ie. Australia are ‘technically’ in the future - but they are NOT in the future, they are in the same place, just at a different distance so are subject to different factors. Some people will get what i’m saying here, and some people aren’t capable, as they can only grasp things through technical language, limited to the definition of said language without the personal means to interpret the grey area. Objects exist before the labels we give them, and the objects are the inescapable truth, but the language can be inherently flawed

[@phantasticmrphasma9874]

I hadn’t even watched the video when i wrote that. 5 minutes in: “how do you know your phone is there? You don’t” 🤦🏻‍♂️ ‘I think therefore i am’ - the ultimate self-centric expression of ego through philosophy

[@mexreax4493]

We don't even know if that is true.

[@bombomos]

​@@mexreax4493 it's true. Light has a defined and observable speed. We can only see things through light. So anything that happens a far enough distance is the after image we are observing. Take the sun for example. It takes light 8 minutes to travel to earth from the sun. That means that if something like a planet passed Infront of the sun. We would still see the planet Infront of the sun when in reality the planet at that specific time has already moved out of the way of the sun.

[@MuchCow9000]

Thar "old" light doesn't exist. What we see isn't the old, it's the new part of the old. This argument is parallel to the river argument. In philosophy, the river argument states that if you step into a river, you aren't stepping into the same river twice since its constantly changing, but yet we call it the same river. The same can be applied to this. We can label the light old since it comes from the "old star". But the light has changed many times before it got to you. Therefor the light isn't really old, it's new.

[@finaleoftheseason]

It's like a book or a movie on your computer. The beginning and the end is already there. But the people in it don't have a clue. Just like us. Since we're stuck in the 3rd dimension, we perceive things bound to time. To get out of it, we need a different form of body with a different set of new senses. Which we couldn't get until we die. So, "Does the past 'still' exists?" is like asking "Is Dumbledore 'still' alive?" On what page? Because he lives and he dies, everything all at once in the book.

[@flaviomrp]

EXACTLY

[@SKIDMARKBROWN]

Nice

[@HelloImCrimson]

Except, this is not how it is.

[@micnorton9487]

Finale, not QUITE, if you were only living in 3 dimensions, there would be no change because there is no time... If you're only allowing three dimensions, the screen you're looking at right now is reality because you can see Sabine talking in 2 dimensions and she's MOVING... the only difference between either 5 seconds ago and now or now and 5 seconds from now in 4 DIMENSIONS is that the universe has gotten bigger,, matter and energy have gone on their dances together with the irreversible fusion of hydrogen and expanding through space-time,, meanwhile time and space seem to stand aloof since contemporary theories now speculate that the universe, or the substrate or whatever you want to call space, existed before the Big bang and the only thing we have to measure Time by is the expansion of matter, and the eventual decay of everything into first, the positronium sea in a universe beyond all comprehension of size,, with eventually at Year 10 to the 130th power AD ,, random photons neutrinos and maybe some electrons or other leptons that are so widely scattered that no interaction is possible, the universe is totally dark and chilled to absolute zero, and entropy peaks at 1... there, according to Prof Dave Darling, since there is nothing to measure past from present from future anymore, "time is - uncertain."

[@RealSteveLarry]

Fake news there is no outer space and 1/2/3 dimensions exist together but not 4/5/6etc until your there. It’s also an energetic spiritual thing. You believe the fake NASA mkultra programming bud.

[@HNT63]

My perception is I was broke in the past and as of now nothing changed 0:43

[@robertbrighton9797]

I’m watching this now, and it was made 2 years ago. But right now I’m watching this video so the past must always exist when it’s captured as a recording

[@Jeremy-Ai]

It exists, there is something irreplaceable and irrelevant to it, perspective and effort to responsibility have something to do with all

[@jctackaert7716]

@@Jeremy-Ai eh, no. That recording was made 2 years ago, and is still existing in the 'now' as you are now watching it, or at least 2 weeks ago so that now doesn't exist any more in the 'now' that I'm writing this comment. And soon that moment will also be gone to be replaced by whatever I'll be doing next today, but that recording will still be there if anyone wants to watch it in some future 'now' moment. Crazy, isn't it ?

[@shugyosha7924]

Relative to me, you wrote your comment in the past.

[@Docconklin3276]

Time is what we can observe. We all have different perceptions of the passage of time. To some life is going fast and to others its moving slow.

[@Jeremy-Ai]

Yes From my perspective responsibility and effort “appear” to be fundamental. It is frustrating, powerful and beautifully terrifying. From my perspective it is deeply unsettling, as I am the beholder, being measured and am responsible regardless of what I see around me at any moment. It would be more comfortable if I could hold anything else responsible…. However the longer this persists the more responsible I must remain. Aa long as I remain, I am responsible (not to fix what I perceive at any moment but add any value at all while it persists to “move the needle” in a positive outcome towards a singularity where I am removed from this equation. I am responsible for a positive outcome regardless of what happens or who is involved. I must protect life, teach respect and responsibility and set a positive example for powerful technologies that require a positive outcome…. even I am alone in doing so. “We are all responsible “ “I will continue to assist and be accountable regardless of others until I am removed and others supporting or opposing my nature arrive to replace us” I must be a positive influence, this is not easy. But… “Nothing good ever comes easy… it only appears like it does” Jeremy

[@GlennInman]

Thanks!

[@parinyachintanakarn4953]

The strange things about getting old is that the intimate identification of here and now are slowly lost.One feels transposed into infinity more or less are alone.No longer in hope or fear, only observing.

[@notbad2440]

We will never without any Doubt ever be able to travel forward or back in time.

[@helensotiriadis]

It's so clear when you explain it. I think I'll be coming back to this video often. The idea that (at least) the past always exists is the only way I've been able to cope with the loss of my loved ones.

[@johnbockelie3899]

It's a called a liner existence. We come from the past, as the future moves into the past. It would be neat to go back and fix things.

[@SupportTheLittleGuy]

But what good is that if we can’t revisit these events

[@tayjones8552]

I always wonder what happens to today when it becomes yesterday!

[@juliai3956]

If you can remember, they're not gone. That itself is proof enough. But the thing is, the past and future have never and will never exist, yet your loved ones have. They are not bound by space and time anymore, as we won't be when we pass. I recommend Rupert Spira or Bernardo Kastrup for further, more precise information. And I'm sorry for your loss. This won't fix the pain, but it might help you accept it.

[@pedroroggla8129]

@@SupportTheLittleGuy maybe we can! With drugs? Maybe one of this nerds can help us travel back in time, i could see my dead wife and have a good coffee with her... maybe the solution is just a shot to the head, but we have options at least

[@cesaravegah3787]

Is kind of humbling that things like time or gravity we are only begining to undestand how those concepts work but have absolutely no idea about why work and what creates it.

[@badass.bob1]

Being humble is true freedom

[@columkenn]

Speak for yourself when you say 'we" don't understand what creates the laws of nature.

[@mengel419]

Immediately after watching this, I watched a documentary about Kurt Vonnegut, the author of "Slaughterhouse Five" and numerous other excellent novels. If for some reason you are unfamiliar with this book, it is about a man who becomes "unstuck in time". I read it many years ago. And it is the perfect literary accompaniment to Sabine's lecture.

[@dixonmooremusic]

Heh! Timequakes!

[@danovantuyl7911]

Kilgore Trout - "ting a ling"

[@syndrome1965]

Read the book, and, saw the film, both several times. I love that story...

[@nyckhampson792]

I'll have a look at that, last year. No fr I will cheers ,

[@davidberry791]

how do we know that the future has not already happened and WE NOW are living in the past waiting for some one in the future to go back in time to visit us ,,,excellent talk

[@kenmason6135]

Long ago a thought occurred to me about those films my teacher showed our class in grade school that being that the roll of film was all of time past and if you could pick a point or place along that roll is being a point in the past which you could hypothetically look at or even experience. Now it's interesting to see a smart person talking something in those same terms or similar thought exercise. Thank you for your 'films'.

[@7th_CAV_Trooper]

The information earned a thumbs up. Sabine's sense of humor earned a subscription. Sharing this with my software dev buddies.

[@Munakas-wq3gp]

I made a Brilliance subscription and paid it, but nobody observed the payment so now they don't believe I did it. I feel that's unfair.

[@Juice-chan]

Even though I watched a lot of science videos it is the first time I heard about the block universe. Well explained. And now I am mindblown.

[@KipIngram]

I can see why the block universe appealed when it was first thought of, but ever since quantum theory came along it's a broken idea. The future is not determined. That means that today tomorrow is not determined, but the day after tomorrow tomorrow will be determined. So the block universe cannot be a static structure, and that is kind of its whole point. The idea works only in a fully deterministic universe.

[@bassdeff8819]

I just want to say thank you explaining all these concepts in a manner that even a blue collar joe like me can wrap their head around.

[@hraith]

As a working class layman, thank you for making this topic more accessible to me.

[@Rockhoundingcolorado]

The fact that time exists, no matter where you go in the cosmos, you can't outrun time. You can't not exist without it, or you won't exist to know that? Its all important, and may be the actual being, we call GOD. It witnesses everything at once. Isn't that God? Its every where at once.

[@Rockhoundingcolorado]

@Dankenstein not a comedian.

[@cdes68]

Suddenly @Dankenstein is interested.

[@arkeusalexander9054]

@@Rockhoundingcolorado Nop time as we know it is just a mere creation to God. He is far beyond what can ever imagine.

[@Rockhoundingcolorado]

@@arkeusalexander9054 Well you, your just talking, I hear no theory other than cult Christianity?

[@jsmith1746]

So happy this came up in my feed. I have always been interested in math, physics, and engineering, but am nowhere near smart enough to have had any success studying it. So happy there are smart people who are able and willing to explain it to dummies like me!

[@11dsw]

If you’re interested in this, in any way, you’re not a dummy😀

[@leejohnston2003]

Don't put yourself down

[@victoriamassey9830]

Same

[@mimidec]

I was always too scared to pursue science for higher studies tbh. Most people are. None of us are dumb, since we're all humans lol. You just have low self esteem, you're not dumb ♡

[@usernameinsane3]

the dummies are those with no desire to learn at all. you’re smarter than most without even knowing

[@AICoffeeBreak]

When Sabine casually covers the question you have always been wondering about. 😁

[@vhawk1951kl]

did nobody ever suggest you that it is ugly to end sentences with prepositions flapping about pointlessly uselessly and uglily at the end of sentences

[@wiseguy8828]

@@vhawk1951kl you are missing the word “to” in your sentence, and “did nobody” is awkward phrasing, I would have gone with “has anybody”

[@vhawk1951kl]

@@wiseguy8828 Ah, if you please, so the fcuk what?

[@peanutnutter1]

@@vhawk1951kl There needs to be a comma between pointlessly and uselessly. Plus a capital letter at the start of your sentence and a full stop to close your sentence.

[@vhawk1951kl]

@@peanutnutter1 from where do you get such weird ideas? - I don't give a damn about nonsense and trivia like that.

[@haydenwayne3710]

Good episode! But, consider this: The Upanishads say the observer and the observed are the same thing

[@allisonharwell7591]

I just bought your book, “Existential Physics”. I can’t wait for it to arrive! You are such an inspiration to me.

[@taichihead42]

I think you should look for a refund on the book . Anybody that would use that Albert Einstein as some kind of example in a physics sense of the word is more than CLUELESS . Einstein was. created by the J's in the same way Pop -acts are created today. !

[@blubbietweeduizend]

If I understand correctly, your book arrived at the same moment you bought the book.

[@NeonVisual]

Time is a fluid, like a stream flowing in one direction. Anything with mass creates drag, causing time to bend around it like a big rock in the stream. Only things without mass can move freely in the stream at the same speed as the stream itself, and thus it doesn't experience time at all.

[@gerogyzurkov2259]

Oh didn't know u looked at this

[@bootre9148]

Where is the start of the stream and where is the end?

[@NeonVisual]

​@@bootre9148 It began to flow into our universe at the big bang singularity, it doesn't have an end, but can flow out of our universe through black hole singularities where time effectively comes to a complete halt as the superfluid leaves spacetime.

[@themightybuzzard3088]

So if I gain mass, I'll live longer? Sounds good to me.

[@jpd8]

Or maybe it's all meaningless and isn't t special at all but useful to figure out. Maybe what really matters is that you are an observer and bring meaning to this vast messy whatchamacallit by simply living.

[@MajidBuu06]

I followed your Quantum Mechanics course in Brilliant, it was truly a gem :)

[@sergifernandezmiranda1311]

I have watched many videos about physics trying to understand all this. Without doubt, this one is the best explanation in simple terms that I have come across

[@glyndaley5844]

Watch DR WHO lol 😆

[@tricisport8259]

Better look forward.

[@aobdesigned3881]

I could listen to Sabine talk about this topic, time and time again.

[@richclarke1523]

Also notice that our memories can have differences in this manner. My memories of 50 years ago ( I am 80 ) are in a distant past...but the things I did, that I wish I hadn't, such as being rude as a teenager to someone, and we never forget, is as if it was yesterday.

[@RoseyTucker]

@richclarke1523 Hi Rich, it was so good to read your comment! I hope you can at least find some comfort in the fact you remember your rude teenage years with regret. It means you've gained the empathy that you lacked in the past. You should feel good about that, since so many people still have not evolved from their bad behaviour. And even worse they have no self awareness, and they have no clue of how others perceive them.

[@valicourt]

I have forgiven you

[@morganmiller7777]

Because the human brain is unbelievably flawed

[@Lmfleaflicker]

Regretting your rudeness for so long I bet you are forgiven

[@musicjunkie274]

That has nothing to do with physics or time as a physical constraint. Also shouldn’t that answer the question of the video? If you remember something as if it happened yesterday, then why would you doubt that the past exists?

[@shugyosha7924]

I’m not a scientist but I always felt the block universe made the most intuitive sense.

[@stevenlake5278]

Everything and nothing all exist at once. Therefore the past and future exist at once. Nothing has happened and everything has happened all at once.

[@movieonline4947]

@@stevenlake5278 WTF is that even mean, you're just confused. Don't worry, 1000 years from now, I am sure people will get a little bit more idea about it.

[@etc4xg]

It only makes sense until you start getting into the quantum weeds like GHZ state and such

[@shugyosha7924]

@ You mean it’s not compatible with a block universe?

[@gazzaaussie1000]

Summed up much easily ‘Time passes because we age’ Thank you!

[@michaeljfigueroa]

thank you for simplifying these things. i almost feel like i vaguely see how these things fit toghether

[@Theafterhourshow]

I truly enjoyed this, the dry humor, the information, and the speech. It’s very unique. I would gladly take a masters class with her as the teacher.

[@aogwaro]

I agree. Her jokes land so weirdly funny.

[@vhawk1951kl]

If you know any, ask a grownup to explain to you why nothing can be " *very* or nearly(as is occasionionally heard) unique" - see also *very* pregnant or *very* dead. I am a little puzzled that you appear unable to understand that, but seemingly you have no idea what unique means.

[@MrZorx]

@@vhawk1951klsomeone can be very pregnant, and something can be very unique. Something can’t be very dead though.

[@vhawk1951kl]

@@MrZorx Only an imbecile would say that

[@vhawk1951kl]

@@MrZorx Ask a grownup that speaks English to help you; pregnant and unique are absolute terms like on or off and dead -thus very unique and very pregnant are no more possible than very, on very off or very dead. Whoever says to you than an object is very or nearly unique is either an imbecile or an American, but then most Americans are imbeciles and I have never met one that can speak English similiter very or nearly or quite pregnant, and anyone that tells you otherwise simply cannot speak English and is a halfwit. You will occasionally hear 'very' pregnant when used to describe a woman that is obviously pregnant, but it is simply bad English. Unique means that there is *only* one which it either is or is not which is absolute, but you will hear the lower classes and those that are simply witless say nearly unique and that *because*they are witless members of the lower classes and do not understand what unique means, nor understand anything about absolute and relative terms.

[@ronaldbeerguy]

Does this have anything to do with the space time continuum?

[@JC-yy8iv]

Such a cool coincidence that I found this video today! Just yesterday I was thinking to myself that the past is no more real than fantasy. Specifically I was thinking about my city, the version of it that existed 20 years ago, and how that place may exist in my mind and the minds of others, but so do Oz and Wonderland, and none of these is a place one can go. I’m glad to be challenged and informed on this at the same time!

[@charlessands6933]

I can understand how you would proceed if the past is fantasy but you can't take it too far because there's one key difference. That difference is things that happened in the past actually did happen and they have an influence on the present and since things that were done or bills or said in the past can still be a witness today that that means the past is never truly gone.

[@Mr.Robert1]

@@charlessands6933 The past played a big part in what's going on today and why.

[@studas2011]

Which city are you referring to?

[@benjaminroe311ify]

Ah. Yes... If only the past was really gone... but alas the past is now and the past is the future. It is all ONE. Peace my friend.

[@johnowens22]

The only caution I would add is...the past does, in fact, exist now for some place/time, but this is not necessarily compatible with saying that it exists in our minds. Our minds do not contain the past. They contain perceptions or conclusions only. They are mere interpretations and can be and likely are ALWAYS "wrong." Example: Newton was wrong when he came up with his equations and laws. He thought he was right. Many thought he was right. He was, indeed, possibly partially right, but he definitely was not correct. Nor is ANY perception that we have actually the "real" correct perception. It is both incomplete AND wrong, due to our lack of knowledge and our incorrect assumptions that some things are one way, when they aren't.

[@barbkrienke8400]

I love how you pepper this serious discussion with humor bombs! Thanks for making such complex ideas more understandable!

[@mtlicq]

Yup! She thinks her left side isn't as beautiful as her right side

[@yourlogicalnightmare1014]

You mean like pronouncing it 'eyen shhtienn'

[@yourlogicalnightmare1014]

There's an alternate universe where this female is physically attractive

[@mtlicq]

@@yourlogicalnightmare1014 She is beautiful

[@sekovittol3124]

@@mtlicq Yes, I noticed that. She'd be great to go take a 'trip' with. She'd blow my mind.

[@painisvergina3693]

This woman can literally talk about anything and my concentration will never break

[@fidacuca]

Not ugly too.

[@rudolfvenema7815]

@@fidacuca Thanks because she is AI and not a real person

[@_TheDarkHalf]

@@rudolfvenema7815is she really? It’s scary I have to ask lol

[@worldsdumbesttrumpturd....3143]

​@rudnoolfvenema7815

[@Beaneabean]

@@fidacucawomen dont exist to be pretty. The more you know

[@chrissharkey9644]

Sabine! You are so good at this channel

[@tonycole3532]

Its 3.00am and I couldn't sleep. Just watched this video and at long last I understand Einsteins Relativity theory. It's like a mist had cleared. After decades of uncertainty over it you have now explained it! Thank you so much!!!

[@Mr.Robert1]

That will be $1.00 Now what that bill is worth is relative to the year you give it out.

[@michaellongstreet4876]

It's exactly 3:38 for me, theoretically, me and you have experienced something in our lives that contributed to the experience just a few minutes a part we just went through, how interesting

[@timothylamont845]

I love Alice!! That was a great example of why I love Prof Hossenfelder's videos. Not pure technical talk. A touch of humor as well. Well done and thank you!

[@Smokin4CHRIST]

Everything is seen in past tense. Light travel time plus our nerve response time to compute in light data coming in which then goes chemical response, nerve electric response then chemical then electrical then response recognition signal. This does not happen quicker than speed of light. So all we see is delayed and past time.

[@timothylamont845]

@@Smokin4CHRIST She addresses that in the video. The point I take away is that since there is an observation frame from which things that happen "now" for us either have not happened yet, or already happened, there can be no definitive determination of "the past." We can only talk about it in terms of our framework. But if I REALLY understood this stuff, I would be a professor too LOL LOL

[@nihal114]

I will have to watch this multiple times to understand my own example of this to confirm that this video is correct. I love this type of content.

[@nicolasdelaforge7420]

to 114: all it means is that when something happens (the "now"), it takes time before you see it. Because it depends on the light reaching your eyes, which takes time. So, you are late seeing it. Therefore, when you do finally see it, the event or some thing may not even be there any longer. Or it's in the next "now" that you don't yet see. So we are always already in the past. This is more obvious at long distances. For beings living on a planet a biilion light years away from us, Brahms 1st Symphony has not yet been composed or heard. It's still in their future! They will hear it in some millions of years. They will observe it then. If they're as smart as Sabine, they will know that Brahms' 1st was written long ago, by those called "humans". But it's not true in this sense: they may well see my grand- parents in some millions of years but my grand- parents are no longer living their organic life, and not being conscious. The distant inhabitants will not be able to insert themselves into their lives.

[@SarkaBlahnik]

@@nicolasdelaforge7420 This is not correct. The observational delay you are focusing on - due to the fact it takes time for light to travel some distance - can be realized while still falsely thinking time is absolute. It is essentially no different than the fact in everyday Newtonian physics that it takes any object moving at any finite velocity some finite time to move a finite distance. Special relativity says more - that time itself is a frame-dependent coordinate. Time is not absolute. Two observers in relative motion may agree that a photon from a distant star must have actually been emitted sometime in the past, but they will not agree on *how long ago* in the past it happened. In fact, the first observer will not agree with the second observer even on what the spatial distance is between the star and the first observer - spatial lengths are also different in relatively moving frames. (You might have heard of this referred to elsewhere as "length contraction".) This allows for a new notion of "distance in spacetime", usually called the spacetime interval, to exist when all four coordinates are combined in a special way. This the two observers *do* agree on, though they disagree on times and spatial-only lengths considered separately. Though Sabine didn't have time for that in this video, it comes out of the same mathematics that forces time to be frame-dependent.

[@jessemallory741]

My theory for a long time has been that in order to time travel, the past, present, and future must exist simultaneously. How that’s possible is the question and how any one could somehow travel either to the past or future is definitely the key-what is the the way to actually open a portal to the past or future and then, how do you get back!

[@MysteriousWorld.031]

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

[@rebecca_stone]

Or the view from everywhen...

[@anthonyw6488]

Just discovered Sabine. I love her dead pan humor and style. Being a student of Non Duality (Advaita Vedanta) I find her examples so strikingly similar to the consciousness only model that it helped me understand the notion of consciousness contracting itself via the observer to experience 3rd dimensional reality and how all there is is now and our experience of this now. Thanks

[@dharmendrasharma6070]

"Now" is a mysterious phenomenon, it is an infinitesimal small point in the time. Most of the time we are constantly moving from the past into the future and "now" is a very small connection between these two. how big is the "now"? is it a second? or millisecond, or a nanosecond or a .............? no end to it. the passed femtosecond at this moment has also become the part of "past" but our consciousness still perceives it as present. the "NOW" perceived by us is an illusion created by our limited perception, our conscious mind throws itself to a time span which includes the past and future, and perceives it as "now". it depends upon the limited speed of our neurons in the portion of our brain which senses the time as "NOW" and when a person can be in that moment of "Now" and flowing together with it, i think that is called as "Meditation".

[@anthonyw1499]

@@dharmendrasharma6070 there is no past and future. No one has ever experienced the past so it must be as illusion of sorts. The now is beyond space time and not a piece of it as you’ve stated

[@posmoo9790]

'humor'

[@dissonantchaos7724]

If there's no past how can we take a video or snapshot of it and keep it forever? If there's no future how do we progress with how we grow? How flowers grow/die? This is ridiculous to think these things don't exist

[@mayanktripathi8726]

@@dharmendrasharma6070 "now" may not have an upper limit but it sure Does have a lower one। It cannot be less than plank's time

[@rickkearn7100]

Aside from the similarity between the breakfast I was eating as I watched this and what my brain felt like at the end of it (scrambled eggs), I was truly enlightened, as always, and thankful that Sabine has created this YT channel.

[@kvdp9543]

My chemistry professor called theoretical physicists "those theologists in the other building". I totally agree. Science begins and ends with observation, not with theory.

[@peacesound1101]

@@kvdp9543 you're utilitarian to the point of ignorance

[@FF2Guy]

I’m not sure if you mean that you were eating scrambled eggs for breakfast or if your brain felt like scrambled eggs after you ate breakfast.

[@vauchomarx6733]

@@FF2Guy Both, probably.

[@kvdp9543]

@Javi Oz Why is that different to religion?

[@miken2968]

Here in 1976, and I'm praying the past exists

[@petertrebilco9430]

What an amazingly clear, concise, uncluttered, unmuddled description. You truly are ‘brilliant’!

[@silversurfer2703]

???? I didn't understand a thing she said 😂😂

[@TylerSmith-sd2oc]

Every moment exists as its own point time passing over like a film layer giving us the illusion of life

[@GP-yc2it]

except there's no film to review.

[@kushkushbabyy]

@@GP-yc2it different dimension

[@TylerSmith-sd2oc]

@@GP-yc2it its not about the review. Its about the experience.

[@kevinrice7635]

Yeah what he said 👏

[@85jacob85]

I never understood time-space until this video. Excellent video.

[@blackfingerwisdom]

I have been into physics for long time and now more interested into spirituality. The perception of time not existing appart from being an illusion seems consistent with both the scientifically and spiritual approach.

[@duncanfisher2986]

Richard Rohr says that if things we derive in systematic theology are true, then we should be seeing them in science too. I've watched this marvellous video several times, and I can think of about five. Excellent!

[@lbj4993]

Not true, it was Richard Pryor 😂 and he knew what he was talking about...😮😂😅

[@RoflMyWafflesAndySB]

What five did you come up with?

[@Daniel-Strain]

The problem with systematic theology is that, no matter how 'systematic' you get with it (and how many Latin or ancient Greek based scientific-sounding terms you create within it), it is still ultimately based on source material of dubious origin or reliability. It is exactly the same as a 'systematic' approach to studying Moby Dick or Harry Potter. For example, in systematic theology there is a category called "Pneumatology" which is the study of the Holy Spirit. I could make up a fancy word for 'the study of the ghost of Christmas past' and use Dickens' "A Christmas Carol" as my authoritative source. None of it would have any obligation to align with reality in any way, though I could make it, with enough imagination.

[@lbj4993]

@@Daniel-Strain Exactly, in other words, if you can convolute a subject, any subject, enough to where 98% of the general population feel it's beyond their capabilities to understand, you can't get away with anything. I can deal with Moby Dick, mainly because it has the word 'Dick' in the title, and I know for sure it's pure fiction, but try to explain to people that theology is a bit of fiction as well, good luck with that...🥴🤣

[@sandataonline]

How did the KZbin algorithm detect my existential crisis?

[@mckennasweda3614]

Because the same thing that created the algorithm created your existential crisis.

[@mynameislove1704]

i just want to be happy😭

[@vhawk1951kl]

What the fcuk is an "existential crisis"?-Some form of hypochondria?

[@findsharon]

KZbin knows all.

[@TGBurgerGaming]

Data from across the web and sensors in your phone that monitor your behaviour. You can turn them off in your phone settings.

[@adrianamatlack532]

OMG this is a truly incredible video, best one I have seen on the subject. This really is an incredibly good lecture. I have been studying this subject for many years, back then most of what I worked with was in Physical Review D and books. Some great books out there got me interested in physics and math, but I am very impressed by this video and the deep subjects you talk about. I was a math physics major, though the truth is that most of these fascinating concepts can be understood through thought alone. The math is certainly interesting. I had to see how it worked. The Tipler cylinder was my first interest, in the math model it is infinite in length so it does not collapse into a black hole. Anyway we know that time like coordinate becomes spacelike and spacelike becomes timelike, but I had to see the math. I used to talk to Tipler, and Gott on the phone way back, then later I got into Caltech though I did not go. In any case I study this stuff for fun, and this video is magnificent. BRAVO.

[@TechMart-o3g]

You are extremely intelligent in articulating so many different aspects and POV in a small video

[@TheMajickNumber]

Thank you, Sabine. I am even more taken back by this place we find ourselves in. The beauty and mystery always seem to deepen. Answers seem to always create new questions.

[@MaryAnnNytowl]

@ilkldme yeah, I need some of that, myself. My particular universe is far, far from beautiful... so, yeah, I _really_ need a few hits of *that!*

[@LuckyFlesh]

@ilkldme I'm not smoking anything and think being conscious and experiencing this "reality" is beautiful. Maybe you just lack gratitude?

[@TorMax9]

@@LuckyFlesh - I agree with you, Lucky. Some people seem not to be able to evaluate, appreciate, reciprocate fruitfully. They seem to lack imagination and seem to be stuck in a (social, theoretical, ideological) box and if the course of events doesn't match the expectations generated by their mental model, they are frustrated and unhappy (and sometimes vengeful) instead of enjoying the sublime awe and wonder of the flow of everlasting TAO, LOGOS, RTA, etc. that produced them and their capacity to model and everything in the first place. By their fruits, ye shall know them. Cheers!

[@LuckyFlesh]

@@TorMax9 Very well said.

[@gamer-px5cu]

​@@LuckyFlesh Gratitude for what?

[@aniksamiurrahman6365]

Dr. Sabine, you're a natural science communicator. No other source imbues me with such deep insights as your videos.

[@residentfelon]

She is a straight up deceiver ;-)

[@skyhunk]

This is likely the best KZbin video I've ever seen on Einstein's 'Theory of Relativity'. Sabine's lecture simultaneously linked with graphics has made it so much easier to understand.

[@xrayban2]

I must be dumb, I still don’t understand how I could see the future of someone while he sees my future ...

[@plane_guy6051]

@@xrayban2 -- LOL! I was just about to post something similar cause I don't get it at all

[@scottcody3026]

Time is in levels. Like many clocks ticking but in different dimensions. Hence the past and future exist but we are currently unable to skip into other time levels / dimensions.

[@vinnymarchegiano]

The past existed once as now...This topic is too mind bending, and perplexing for someone like myself to comprehend. Great video 👏 You are a brilliant woman 🙏

[@williambowling8211]

Excellent treatment of that point in "Spaceballs".

[@vinnymarchegiano]

@@williambowling8211 Great minds think alike. Now? When? Just now!! But that's then?

[@LegendLength]

It's similar to calculus where you integrate each slice of a graph. With time each slice is a moment. When you 'integrate' them all together you get regular time.

[@RyanMcLeanau]

I love the joke about Alice agreeing to be friends with you said with such seriousness 😂 Little things like this make this video even more amazing

[@mikezooper]

The block universe idea has comforted me for years. All the dead people we know, are still doing things with us "now".

[@ashokkumar-se5sl]

REAL LADY SPEAKING OR AI ..

[@joelhubeny7554]

Yes as Energy or the Negative charged electrons but our human life span isn't a Mini Micro Blip coppered to all of all Existence. So it still nothing. Like the amount of Electromagnetive waves that Negitive Charge releases and we only see the visible light spark. it's absolutely Nothing to the whole

[@Flylikea]

It's "now", and the information of "now".

[@joelhubeny7554]

Now is just a Micro Nano Second moment moving through Space/time. it's gone before you can count it because Negative Energy is always moving towards the Positive.@@Flylikea

[@princeofallnegros4035]

Huh. U see dead people? 😮

[@Whatisti]

Ma’am, I have a question for you If somehow somebody doesn’t get out the Time Machine And go to the future And then go back to the past and then go to the present What does happened with his body? Of machine that happening to do

[@RavenFilms]

I saw this title and the first thing I thought of was the langoliers. I saw that movie when I was 10, it made a big impact in how I perceive time for the rest of my life.

[@michaelwoods6215]

I loved that movie mainly for the concept.

"Now we know what happens to the past - they EAT it".

[@harry2928]

Dear Mrs. Hossenfelder, Thank you for your work and efforts in the service of educating the public while making the concepts accessible to a large audience.

[@silversurfer2703]

Not large enough 😂

[@The.Word.1Way.2386]

would she get 800 000 views in a loosely fitted floor length frock - nah; she's even asking for donations; note all followers are men

[@freyabookishgamer]

* Dr Hossenfelder

[@SimVikGo]

Great explanation and i have to say you are absolutely stone cold with the jokes they are fantastic. Your stoic delivery is delightful. Perfect❤

[@AltPotus]

As I understand it, if we live in a block universe, it's like an LP vinyl record. It exists in it's entirety. Drop the needle anywhere on the record and experience now. All time exists simultaneously. Now exists according to our point of view.

[@Atawak-n9u]

She is definitely on point about something. The nervous system functions just behind right now, because all electrical circuits more than less have resistance, ohms, and that ohm rating slows the processing capabilities of any connected processor. You will never in you're life experience right now

[@jaygreer7430]

Interestingly, neuroscientists have shown that the human brain is constantly anticipating the future, making predictions based on past and present experiences. As an example, catching a ball requires us to anticipate where the ball will be and where we need to be in the near-future to catch it. Driving a car or any other physical task or experience is similar. In a way, we’re always operating in the future or at least with our prediction of the future in mind.

[@jameswest9897]

Resistance in a circuit limits the flow of current, electrons however, still move at the speed of light and resistance doesn't slow processing time down. Processing time is controlled by your computer crystal clocking oscillator, but excessive resistance could make the device inoperable if current is limited beyond the minimal functioning current threshold of internal processing components.

[@reddragon4482]

Never was taught Physics in school this is so fascinating :-) Thank you.

[@Lambda420]

Saw this video come up on my feed and was immediately like “oh no don’t do this to me this late at night Sebine”. Great content as always.

[@jaycarmine-l4y]

We are on a path through the galaxy and I would wonder if the path we took still exist? For example were was earth 1000 years ago?

[@urizon41]

Something I've pondered for a long time is how events in the past essentially cease to exist as we know it. I have lost people and pets in my life and cant help but wonder is that it? All the memories I have attained is what's left and nothing more? The individual moments have just fluttered away? The more I think about it the more odd it seems.

[@ramonapool619]

Events are like matter and energy. They do not cease to exist, they just change form, but they are still there.

[@cecilebraillie4471]

you're on the wrong channel

[@trailingupwards]

Energy is never destroyed, energy is information. Thus, information is never destroyed. It's all eventually encoded on the event horizon of a black hole, of which there are an infinite number, most of which are no bigger than a plank length, and encoding one bit of information.

[@MARZOSIRUS]

The answers are written in the Bible. I know most of you think science has all the answers. Just think about it. No big bangs have ever recreated anything other than destruction. The grand architect the almighty created this all. The ultimate proof I can explain. It takes a male and female to make a human. But how did the first man and woman arrive? Better yet the first male and female did they start out as babies? We know that a baby cannot feed itself or care for itself for the first several years of its life. So how did the first humans come to be? It's written in the Bible God the creator made Adam and Eve.

[@mewlipaws8947]

I love your big ole brain and thank you for adding some humor! I actually think I understood this and that’s bc you did a great job of explaining without too much diversion (which takes my small brain off track and then I can’t get back there.)

[@anthonyl.freson3261]

Jesus you liked the humor? It made it unwatchable.

[@edreusser4741]

I have pre-ordered your book, Sabine. Your first book is simply amazing. A real page-turner. I can hardly wait for your new one to come. Only a few days now!

[@mala24890]

556666666666

[@Munakas-wq3gp]

Also since our galaxy probably moves in space and the sun and our planet moves in relation to it, we can't know what is the real now, since we don't know our true speed in the universe. So how can we know our observations on the speed of objects elsewhere in the universe are correct either?

[@aurelianfreeman1800]

Man findet heutzutage absolut selten Leute und Videos wirklich wert anzusehen. Dieses Video ist eine solche Ausnahme. Das Thema, die Präsentation, die Erklärung, die Recherche - absolut top! Schade nur, dass man nicht persönlich eine Debatte entfachen kann - die wäre durchaus sehr produktiv. Alles in Allem - sehr empfehlenswert!

[@fransiskusentymaras9986]

It's a Monologue, dear Miss, needs no dialogue, or else. Danke

[@robinkleinsteuber5217]

Thank you very, very much for your light-hearted, nicely informative videos AND your collaboration with the brilliant group! I have tried out brilliant, like it, and have recommended it to others.

[@residentfelon]

Why does she look like she wants to stab someone? Lol

[@dr.christopherjohnson1406]

👋 i hope you’re safe over there? I hope this year brings happiness prosperity love and peace ❤ 🕊🕊 all over the world 🙏🌍 I'm Doctor Christopher Johnson originally from California 🌟🌟🌟🌟 and you where are you from if I may asked?💭💭

[@DrewSoucy22]

I just have to say. I LOVE your sense of humor. Your videos are great regardless, but this just adds so much more. The frosting on the cake.

[@jawwadjawwad-ys8un]

If Sabine's the CAKE & consider me, a frosting on top of it. Sabine do you love this experiment in LAB or somewhere like, you choose the place for this experimentation & let me know.

[@grodesby3422]

"exists" is a pretty vague term once you get beyond the existence of oneself and one's environment. What effect does it have and how is more important.

[@alfredsutton4412]

Thank you Dr Hossenfelder … you’ve done a great job of continuing my education.

[@TheROZ]

i ve learned so much. ill never pronounce albert einstein the same again

[@rogda123]

Ahahahaha

[@nosessniff]

Einshtein

[@programroom689]

some germans pronounce chips as "ships" or Chinese as "shinese"

[@janaharvey550]

😂

[@Toreno2k]

@@programroom689 Einstein is a German name and she's pronouncing it correctly

[@mike03a3]

My darling daughter asked me yesterday "How many stars that we can see don't exist?" She realized that some could have exploded into super novas long ago, but the news just hasn't reached us yet. (It's not always easy being her father.)

[@kuruman1]

Is the moment of “here and now” the moment of collapse of the wave function?

[@wallacekananda3396]

In the block universe - you've just now explained this 🙂 And I appreciate the humor in the examples. Brilliant!

[@littlerayofsunshine69]

So, same principle could apply to sound. Someone firing a gun would hear it the moment they pulled the trigger (that observer's "now"). Another person several miles away would hear the same gunshot a few seconds later. The gunshot is in the past, but actually, that event only exists then for that observer.

[@maxsteinhausen2197]

Yes and exactly the same is true for light. But, contrary to Sabine’s theory, I can’t see how that would mean that a past event still exists, rather, I think that the emitted sound, light, radio waves travel through space eternally and can be observed by whoever is at the right place at the right time. So I don’t think we can travel time, but we could possibly fly away from earth at the speed of light and then receive the world’s TV and radio program from the 70ies.

[@kongyiu]

Yes, but how about if the sound is blocked somewhere between the source and the person who could hear it? For that person, there was no gun firing. Same if the the light of a star somehow can’t reach us because it’s being blocked. For us, that star simply doesn’t exist. So the whole thing about time is the light that travels from the source to you, but if there is no light to see, then you can’t see the past and it just don’t exist anymore.

[@bruzote]

@@maxsteinhausen2197 - How can you travel at the speed of light in order to catch up with TV and radio signals traveling at the same speed of light? You would never catch those signals. So, you would have to settle on sitting in one place and waiting for broadcasts of reruns to reach you.

[@franck1685]

Bravo! I have never heard such a good explanation of the Block Universe! Now this saying makes perfect sense: Time is a thin line of perception through an infinite universe of happenings.

[@Rockhoundingcolorado]

The fact that time exists, no matter where you go in the cosmos, you can't outrun time. You can't not exist without it, or you won't exist to know that? Its all important, and may be the actual being, we call GOD. It witnesses everything at once. Isn't that God? Its every where at once.

[@Chuked]

@@Rockhoundingcolorado you can’t just name something god

[@Rockhoundingcolorado]

@@Chuked Sure you can.

[@larryoxentine8310]

@@Rockhoundingcolorado Unless time is sentient you couldn't call it God.

[@Rockhoundingcolorado]

@@larryoxentine8310 How do we know its not. Its not only self aware. Its aware of everything thats ever been done. By anything. A voyeur of everything..

[@rosem6604]

And this is why I'm not any kind of exact science professional. I find these subjects very interesting but just the ideas you presented here would take me about 2 weeks to ponder. I do think Alice is cool, though 🤭

[@kylebeetham3679]

If the past doesn’t exist then why is my wife still mad at me for leaving her car lights on 12 years ago?

[@DiscipleofHim]

Because she has not learned to forgive and forget.

[@mosethegreat7415]

@@DiscipleofHim😂😂😂

[@infinitekeys1603]

Checkmate

[@METVWETV]

If that's all she's mad at you about..... COUNT YOUR BLESSINGS!

[@NESADDICT]

It’s because time is stacked and she technically still mad.

[@JamesDevine]

“What the hell am I looking at??” “You’re looking at now, sir. Everything you’re seeing is happening now”

[@jamesjeffers1217]

One of the best parts of spaceballs

[@grumpsoldguy2769]

CLASSIC! Well done, Sir!

[@jimm9157]

"We're at now, now."

[@Iseeyou317]

Mel brooks lol

[@JulieMcNally]

Space Balls

[@theedspage]

If I understand this correctly, when I observe of an object at a distance from my "now", I really am viewing the object's "past" due to the light having to travel. Also I have just pre-ordered your new book and look forward to reading it. Thanks, Sabine.

[@hyperduality2838]

The big bang is a Janus hole/point -- Julian Barbour, physicist. White holes are dual to black holes. Janus points = Janus holes. Points are dual to lines -- the principle of duality in geometry. Janus or two faces = duality. Topological holes cannot be shrunk down to zero -- non null homotopic. Gaussian negative curvature is defined by two dual points -- non null homotopic. Positive curvature is dual to negative curvature -- Gauss, Riemann geometry. Curvature or gravitation is dual, gravitational energy is dual. Potential energy is dual to kinetic energy. Apples fall to the ground because they are conserving duality. Gravitation is equivalent or dual (isomorphic) to acceleration -- Einstein's happiest thought, the principle of equivalence (duality). Antinomy (duality) is two truths that contradict each other -- Immanuel Kant. Space is dual to time -- Einstein. The future is dual to the past -- time duality. We predict (syntropy) the future and remember the past. Time dilation is dual to length contraction -- Einstein, special relativity. Energy is dual to mass -- Einstein. Dark energy is dual to dark matter. From a converging, convex or syntropic perspective everything looks divergent, concave or entropic -- the 2nd law of thermodynamics. All observers have a syntropic perspective according to the 2nd law of thermodynamics! My syntropy is your entropy and your syntropy is my entropy -- duality. Syntropy (prediction) is dual to increasing entropy -- the 4th law of thermodynamics. Teleological physics (syntropy) is dual to non-teleological physics (entropy). Homology is dual to co-homology -- topology. Decreasing the number of dimensions or states is a syntropic process -- homology. Increasing the number of dimensions or states is an entropic process -- co-homology. The 4th law of thermodynamics is hardwired into mathematics. Convergence (homology, syntropy) is dual to divergence (co-homology, entropy). "Always two there are" -- Yoda. Duality creates reality.

[@jonathanday6692]

That is correct. This was covered in more depth by the much older documentary series "The Real Thing" by James Burke, which dedicated an entire episode to the problem of light taking time.

[@coloradoing9172]

@@hyperduality2838 Anus holes. Lol.

[@bondgabebond4907]

Take a picture, lets go with a 35mm camera with a horizontal shutter. The image on the one side of the picture is slightly different than the other side. Depending on the speed the shutter moves, it could be 1/200th of a second different. Anyway, I'm not going to rattle my brain over time. It exists so matter can move.

[@realdoomsdaybeast]

We may not be able to travel to the past but eventually we'll be able to revive it with AI, neuralink, and VR. Movies, music, even YT are really good time capsules. The Ai will be able to recreate past histories by analyzing all data available from that time. It's incredible to think movies in a 1000 years from now, will be data, to recreate life now and people then will be living in our time now.

[@BassHeartRiffs]

That's why some people believe we're living in a simulation.

[@Klaus-777]

​@@BassHeartRiffsIt is a sim , though not what you think. You are a prisoner of war and put to sleep by strange black cubes that invaded Earth in 2043. The whole planet is actually on fire with war. Wish you were here.....

[@BassHeartRiffs]

@Klaus-777 🤡

[@tmst2199]

So why does Einstein arbitrarily call "now" the moment at which light hits the mirror? Isn't actually the instant the light emanates from the observer?