What Is Time? | Professor Sean Carroll Explains Presentism and Eternalism

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It's said that the clock is always ticking, but there's a chance that it isn't. The theory of "presentism" states that the current moment is the only thing that's real, while "eternalism" is the belief that all existence in time is equally real. Find out if the future is really out there and predictable-just don't tell us who wins the big game next year.
This video is episode two from the series "Mysteries of Modern Physics: Time", Presented by Sean Carroll
Learn more about the physics of time at www.wondrium.com/KZread
00:00 Science and Philosophy Combine When Studying Time
2:30 Experiments Prove Continuity of Time
6:47 Time Is Somewhat Predictable
8:10 Why We Think of Time Differently
8:49 Our Perception of Time Leads to Spacetime
11:54 We Dissect Presentism vs Eternalism
15:43 Memories and Items From the Past Make it More Real
17:47 Galileo Discovers Pendulum Speeds Are Identical
25:00 Thought Experiment: “What if Time Stopped?”
29:07 Time Connects Us With the Outside World
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#whatistime #seancarroll #physics

Пікірлер: 3 800

  • @KaliGold
    @KaliGold5 жыл бұрын

    Love this format. No audience. No overuse of special effects. No host trying to be overly entertaining and funny like some of today's documentaries.

  • @sylwiadrozd9899

    @sylwiadrozd9899

    3 жыл бұрын

    total agreement here, no clowns, knowledge counts instead :)

  • @Bassotronics

    @Bassotronics

    3 жыл бұрын

    There is an episode of Startalk with Neil Degrasse Tyson of which 4 times him and his host were joking about a certain topic and the poor professor who was being interviewed just stood there like a statue trying to avoid the “joke”. Lol!

  • @johnboykin3128

    @johnboykin3128

    3 жыл бұрын

    Well said. It's like yo yo yo whattup science bitches? Lemme give a shout out to my physics posse.

  • @darrenjones9359

    @darrenjones9359

    3 жыл бұрын

    @Science Revolution what the hell are you talking about?

  • @cs-cl9qs

    @cs-cl9qs

    2 жыл бұрын

    Love this comment. Helpful. Constructive. Non-repetitive. Straight to the point, allows the creator to know we wanna see it

  • @jerrycates3539
    @jerrycates353911 ай бұрын

    Prof. Carroll has a genius for clear teaching. I can’t think of anyone else who explains complexity so smoothly and effectively.

  • @johnroberts1873
    @johnroberts18732 жыл бұрын

    What an incredible documentary! I enjoyed it so much I’m going to watch it again yesterday.

  • @andymcnabb2826

    @andymcnabb2826

    Жыл бұрын

    What a great comment I will also read it again yesterday

  • @marios2150

    @marios2150

    Жыл бұрын

    I just read this comment tomorrow.

  • @jamesanonymous2343

    @jamesanonymous2343

    Жыл бұрын

    JR,,,,,,,,,,YOU DON'T HAVE A CLUE ABOUT WHAT YOU'VE SEEN HERE !

  • @sauce4660

    @sauce4660

    Жыл бұрын

    😭🤣😭🤣😭

  • @bestkoreanorth5696

    @bestkoreanorth5696

    Жыл бұрын

    There are 4 part series by Brian Greene - watch that first. Have to understand space first in order to understand time. kzread.info/dash/bejne/lnmL19J6dte-d7g.html

  • @curvedvector
    @curvedvector4 ай бұрын

    I recall a childhood riddle: What's always approaching but never arrives? Tomorrow. At the beginning of the COVID pandemic I had this eerie feeling that time had slowed down, yet I felt like I was aging more rapidly. I'm not sure how to reconcile those perceived contradictions.

  • @randomguy4421
    @randomguy44214 жыл бұрын

    String theory may be true, but maybe knot.

  • @andromedia9649

    @andromedia9649

    4 жыл бұрын

    William Scott not*

  • @marcoa.pacheco8605

    @marcoa.pacheco8605

    4 жыл бұрын

    String Theory is work in progress. Also, General Relativity it's NOT a complete theory, because it does not explain new factors no seem 100+ years ago.

  • @TheShootist

    @TheShootist

    4 жыл бұрын

    do you have a particle collider the size of M31? No? No SUSY for you.

  • @danielrodriguez248

    @danielrodriguez248

    4 жыл бұрын

    😂😂😂

  • @davidtrindle6473

    @davidtrindle6473

    4 жыл бұрын

    William Scott funny

  • @brianfreeman5880
    @brianfreeman58805 жыл бұрын

    Gosh. Sean Carroll you are such a smart man. You say things in what seem like to be the best possible ways to explain them. Such a great communicator. Intelligence is less valuable without good communication. Good communication is less valuable without good intelligence. You sir are what happens what you have both. TY for your hard work.

  • @jeremylink3489

    @jeremylink3489

    5 жыл бұрын

    But sean must not stop growing in his philosophy because what one sees is what one sees.

  • @thahamfamng9138

    @thahamfamng9138

    5 жыл бұрын

    Brian Freeman I don’t think u learned anything

  • @sardarzadamohammadyunussah4273
    @sardarzadamohammadyunussah42732 жыл бұрын

    After watching the lecture, I began to read comments and was so surprised that the large majority of commentators had a great understanding of the subject discussed and made more easy for me to get my concepts more clearer than ever.....keep on spreading the light of knowledge with a logical approach....my heartfelt thanks to the entire team who made this happened...

  • @josephmarshall2030

    @josephmarshall2030

    2 жыл бұрын

    Thanks, like a great song"lotsa info packed into brief time-space; me thinks you may be an acolyte of henry jacobowitz and john bonham😄

  • @mauricebutlerfootballnewsa7566

    @mauricebutlerfootballnewsa7566

    2 жыл бұрын

    Verify every bit of information you conceive

  • @kn9ioutom

    @kn9ioutom

    2 жыл бұрын

    TIME IS THE CAUSE OF GRAVITY ??

  • @soleaguirre100

    @soleaguirre100

    Жыл бұрын

    Jean Pier Garnier Malet joya 💎 found it! l am sure you enjoy it ! greetings from Santiago Chile 🇨🇱

  • @chrislucastheprotestantview

    @chrislucastheprotestantview

    10 күн бұрын

    ​@@kn9ioutom i hold to Presentism. I do not believe in time existing as a separate thing from matter, and would say we base time on sequences of change or movements relative to change in another object. Like we base a day on the movement of the sun around the earth. Then we divide that up into 24 parts. Then divide that into smaller parts. Then we set hour glasses to measure it. Then watches that count in a similar manner. But what is that watch originally based on? The movement of the sun and we coordinate that to the movement of the hands or numbers on a watch. But what you do not see is people just setting the watch to a thing called time. Time is not some reference point in of itself. Just like if you asked how tall I am, and I said " 6". "6 what?" " Well I am 6 tall." Time is nothing that can be traveled. You cannot travel to the past. We live in the now. And basically there is matter and the movement and arrangement of it in its current state to the next. And we base time on that

  • @teejayaich4306
    @teejayaich4306 Жыл бұрын

    Fantastic lecture. His explanations are especially effective for those of us without any visual component to our memories/thoughts, who sometimes struggle the moment someone says "just picture/imagine/visualize such and such" Don't even get me started on "picture X and then rotate it in y manner"

  • @sergeynovikov9424
    @sergeynovikov94245 жыл бұрын

    i admire Sean's ability to speak so simple and clear about most fundamental and complex things.

  • @room111photography5
    @room111photography55 жыл бұрын

    Carroll is awesome. He is able to distill scientific concepts to a level understandable by a common person. I saw him on Joe Rogan. The way he was able to explain heavy concepts...unbelievable.

  • @putchanarasimham3013

    @putchanarasimham3013

    4 жыл бұрын

    Absolutely, right from the beginning. The subject or body of knowledge is NOT absolute, the way we understand totally changes the knowledge. Is that another accepted subject of study in philosophy?

  • @TheShootist

    @TheShootist

    4 жыл бұрын

    and Rogan says DeGrasse is a much better explainer

  • @CometComment

    @CometComment

    4 жыл бұрын

    Except for that one time where he used the stupid term "proper time", and confused the kid in the video explaining relativity to a child, a teen, a student and a professor.

  • @room111photography5

    @room111photography5

    4 жыл бұрын

    @@TheShootist Yes, Neil is cool, too. But he needs to be careful. The #metoo stuff is for real. Word on the street is that he's putting moves on women in his circle. Wrong. Don't try to get p***y from your employees. That's immoral and unethical.

  • @TheShootist

    @TheShootist

    4 жыл бұрын

    @@room111photography5 better to act a man than a mouse.

  • @akosiisrael2849
    @akosiisrael2849 Жыл бұрын

    Salamat po sa napakagandang explaination kahit mayroon akong konting hindi naiintindihan ay pakiramdam ko ay nasusundan ko ang iyong paliwanag kasi nararamdaman ko na tama ang iniisip ko sa mga sinasabi mo, halimbawa: Kapag iniisip mo na hindi ka masasakop ng oras, ang oras ay lilipas. At ikaw ay iyon padin, hindi maapektuhan ang iyong imahinasyon. Ito pa ang isang halimbawang: Makakalula mo ng future pero hindi ang ngayon, makakalkula mo ang future sa pag kalkula sa nakaraan. Pero naka depende ang ibang sagot ibang pamamaraan ng pag kalkula

  • @ToriKo_
    @ToriKo_ Жыл бұрын

    And it’s enlightening to see how Sean has actually had a long time to develop, articulate, and get familiar with these ideas and his style of communicating. Interesting and maybe obvious to realize that ‘Biggest Ideas in the Universe’ didn’t completely fall out of thin air

  • @Amy-zb6ph
    @Amy-zb6ph4 жыл бұрын

    What do we want? Time travel! When do we want it? Irrelevant!

  • @tigerstudios

    @tigerstudios

    4 жыл бұрын

    Time travel isn't possible. Time is the rate of change in Energy. The sun is our energy, and "time" moves forward as the energy is released. :) Look at pictures of a Nuclear mushroom cloud... That's Time Travel! The Stem of the cloud is where time moved ahead rapidly......

  • @dozog

    @dozog

    4 жыл бұрын

    Amy, you made a few nerds smile, and some other nerds didn't get it.

  • @reddevilsunited7780

    @reddevilsunited7780

    4 жыл бұрын

    @@tigerstudios not correct as you suggest the rate of change in energy is constant. and also suggest that every sun creates its own time because all suns release energy. Time slows when i move fast through space, or go further away from a gravitation pull of the planet. IT HAS NOTHING TO DO WITH THE ENERGY RELEASED from the sun - we already know time is related to SPACE

  • @lancetschirhart7676

    @lancetschirhart7676

    4 жыл бұрын

    @@reddevilsunited7780 Time slows in an accelerated frame or gravitational field (equivalent). So you have it backward. But that doesn't challenge the point you were ultimately making.

  • @thattwodimensionalant4626

    @thattwodimensionalant4626

    4 жыл бұрын

    Michael R You are so wrong, where did you learn that?

  • @George4943
    @George49435 жыл бұрын

    Yesterday is but a dream; tomorrow is but a vision, But today, well lived, Makes every yesterday a dream of happiness, And every tomorrow a vision of hope.

  • @Rattus-Norvegicus

    @Rattus-Norvegicus

    5 жыл бұрын

    That's the turtle from Kung Fu Panda right?

  • @DeependraTube

    @DeependraTube

    5 жыл бұрын

    great thinking ....🙏🙏🙏

  • @samymaziz8039
    @samymaziz80393 ай бұрын

    What an amazing documentary! Thank you very much Prof Caroll!

  • @vivekdabholkar5965
    @vivekdabholkar5965 Жыл бұрын

    Professor, you are a blessing to students like me, who are constantly learning!

  • @Inhuman0
    @Inhuman04 жыл бұрын

    Truly one of the best science communicator out there.

  • @konykon5534

    @konykon5534

    4 жыл бұрын

    Be Honest #Now !!!

  • @mr.johnson460

    @mr.johnson460

    4 жыл бұрын

    @@aussieragdoll_tnls932 746 for me because of 17:11 error. And that's just one thing.

  • @ophiolatreia93

    @ophiolatreia93

    2 жыл бұрын

    Communicators

  • @mlembrant

    @mlembrant

    2 жыл бұрын

    @@ophiolatreia93 (^.^)

  • @catalinhozu7181

    @catalinhozu7181

    2 жыл бұрын

    This guy went one place above Brian Cox in my top 5

  • @Saki630
    @Saki6304 жыл бұрын

    Yeah I have to turn in a project in two hours; lets watch this video and hopefully gain some insight into my procrastination.

  • @surfside75

    @surfside75

    4 жыл бұрын

    How'd you do bro? -truly interested😊

  • @SubTroppo

    @SubTroppo

    3 жыл бұрын

    My motto is "procrastinate now",

  • @davidbarriuso4707

    @davidbarriuso4707

    2 жыл бұрын

    Hope that project went well g 😂

  • @koalau4417
    @koalau441711 ай бұрын

    Wow! This is the best illustration of space time that I've ever heard. Most importantly I can actually follow and understand what he said! 🤩❤

  • @carlhaldeman420

    @carlhaldeman420

    Ай бұрын

    He reminds me of an algebra instructor students lined up early to get for the semester. Even I got through the class with a good grade. However, I can't remember much, if any, of what I "learned".

  • @timbuktu5505
    @timbuktu55052 жыл бұрын

    I'm glad I found the time to watch this.

  • @oxiigen
    @oxiigen5 жыл бұрын

    “Time is the moving image of eternity.” --Plato

  • @roybradshaw4252

    @roybradshaw4252

    4 жыл бұрын

    this man knows nothing of time time was invented bye man to make sense of what we do and understand if u go to work at 6.am an finish at 3pm the is how long we are at work the sun rises in the east and sets in the west how long does it take to move from east to west we use a clock mostly are 24 hrs long befor we ad clock we started at sunrise and finished at say midday thats the sun move south at say 12 hrs no such thing as space and time dont exist in nature lol he gets payed for this rubbish

  • @TheForneveralone

    @TheForneveralone

    4 жыл бұрын

    @@roybradshaw4252 time does exist everywhere tho lol. How are you going to say it doesn't exist naturally? Why do animals get older then? Why do things change? This is time in motion. The way we label time however is not natural and really only pertains to humans. We put this label on however so that we are able to better understand the process of time and what it is, so when people are explaining time they are talking about the mechanics of time not the way we describe it, but the way it describes itself.

  • @roybradshaw4252

    @roybradshaw4252

    4 жыл бұрын

    @@TheForneveralone it is a process that all living things go through its not time its a process witch applies to all things according to how old they are and time was invented bye humans to understand of periods of movement of natural things in the universeif u over work u get tired and hill so you take periods of to rest

  • @shangavik4128

    @shangavik4128

    4 жыл бұрын

    @@roybradshaw4252Then what about past present and future bro

  • @roybradshaw4252

    @roybradshaw4252

    4 жыл бұрын

    past as gone presant is right now and the future as yet to come so time as nothing to do with it u cant say it 7pm if its really 6pm a time that humans have agreed with not found in nature@@shangavik4128

  • @slipkorn420
    @slipkorn4205 жыл бұрын

    Sean Carroll has an impeccable sense of TIME on those cameras

  • @yannisvaroufakis9395
    @yannisvaroufakis9395 Жыл бұрын

    Fascinating. I always considered the question of what is time to be the greatest of all mysteries. On the one hand, time, in its most superficial sense, is nothing but the measure of change. The minute hand of a clock is at 12, then is at 3. A billiard ball that was a foot away from the left corner pocket is now in the pocket. I was young yesterday; I am old and gray today. On the other hand, there can be no change -- the clock hand cannot move, the billiard ball cannot roll and my appearance cannot alter, unless there is time. Nothing can "happen" outside of time. So then, is time emergent as the manifestation of relationship dynamics among things, or is it fundamental and a priori? I tend to think the latter. Therein lies the profundity of the mystery that present science cannot answer.

  • @sohara....

    @sohara....

    Жыл бұрын

    Fred Alan Wolf has an answer. See clip on KZread: "Is time travel possible?"

  • @fithunlulu

    @fithunlulu

    Жыл бұрын

    i don't think time is a priori . imagine a place where is no phenomenon, no movement , no chemical changes , no matter , just space and time . is there time in such situation ? there is no change to measure so there is no time. time is present because there is change and time is measure of that change ,

  • @designsbyphilip510

    @designsbyphilip510

    Жыл бұрын

    I like the thought you put into this. I read what you wrote and thought myself what if we were one dimensional creatures within the time field. Space has 3 dimensions that we can experience, why couldnt time also have 3 dimensions that arent apparent to us. A one space dimensional being would see items appear and disappear within their point of space and it would be normal, just like we see the future appear and the past disappear as normal. Just a thought I had when I read your comment.

  • @timeisapathwalkingtounderstand
    @timeisapathwalkingtounderstand2 жыл бұрын

    Thank you for the video. Here in New York City 7:38 a.m. Wednesday October 6th watching again, and I love the background cool pictures. So many philosophical answers about "what is time."

  • @MMAGamblingTips
    @MMAGamblingTips5 жыл бұрын

    Dr. Carroll has that rare Professor Carl Sagan ability. The gift to know what he is talking about combined with the ability to dumb it down for the layman to understand. Many professors are genius academics inn their given field of expertise, but few possess the unique ability to share this knowledge with their audience without having a bunch of eyes glazing over.

  • @petersinclair3997

    @petersinclair3997

    4 жыл бұрын

    Insidious Vidz That is true, but professors can learn. Oppenheimer was a lousy teacher at first, but ended up one of the best.

  • @christianfaust5141
    @christianfaust51413 жыл бұрын

    Very nice presentation about the philosophical aspects of time. I am currently reading Einstein's book: "Über die spezielle und allgemeine Relativitätstheorie" which is for me as a German a very precious book because Einstein's carefully chosen words about time and space are of course a German that does not exist anymore. It's unbelievable how precisely Einstein can describe his thought experiments only by words with very few sketches. This approach is totally different to the visual world of today. Professor Caroll has the same talent to illustrate very abstract but "real" aspects of life only by his very well chosen English words and statements that only a native speaker can achieve. But I am very grateful as after war generationperson who raised up in an English affine environment that listening to him is like as if he spoke in German to me. Danke!

  • @matthewphilip1977

    @matthewphilip1977

    Жыл бұрын

    What does he mean when he says the past, the present and the future are all equally real? In the past he was a small boy. Is he saying that the small boy still exists? In the future he will be an old man, if he lives that long; is he saying that the old man exists now? If not what makes the past and the future as real as the present?

  • @Hreed-jk3sx

    @Hreed-jk3sx

    11 ай бұрын

    @@matthewphilip1977 he means everything that occupies space must travel through space time. If time didn’t exist nothing could move or decay, likewise time is a real construct that flows all particles through it

  • @bosstradingpro1910

    @bosstradingpro1910

    11 ай бұрын

    Time is like the measuring of changes between distance and events spawning from a sigularity; and consciousness is the recording of the disorder as it flows. Entropy must continue so the record is stored in created consciousness (example :a cell carrying out a function. The cell each time coded to make less mistakes than the last. Like learning to not destroy itself after continual repeated failures) by dark energy and the information is then evolved and replicated so that the samething does not infinity repeat. My perspective on the reality of the universe for everyone is different and subjective to that organism\being ,for an example. Scientist states that viruses, bacterias or cells are examples of living organisms that even live in our bodies and they carry out functions. Human beings also carry out functions; but we look at cells and viruses as a lesser life form of life. If there are advance or higher forms of life, they can also measure us human beings and state also that we are a lower form of life just as human beings may observe an ant as a lower form of life. However, because of this an ant may not be important to us, but if you try to squash an insect it will try to flee and preserve it's life thus means it's life must mean something to itself; but not to us. Even blood cells defend themselves when under a threat just as we do, but is the life of one blood cell important to us? Is the life of a human being urgent to a tree which is also a living organism. Human beings are the main cost for the destruction of trees whichin they've been here before we we're in existence. So are trees a higher life form than us? A more advance and higher life form may look at a tree and say this tree is much more important than a human being because it sustains life on this planet but human beings destroy the planet with human helping technology (depending on their perspective). All of this said humans may not be as prominent as we think If we remember the laws of physics breaks down on a quantum level. There are lengths like the plank length that are so small that it can be compared to the scale of the universe. So doesn't this mean that being that small you are in a universe of its own , within another observable universe but only observable by our knowledge by humans. If this is so then there must be other places the laws of physics break down also. If it does for the extremely small why not for the extremely big? Who is big and small anyways? We are small to our planet but our planet is small to our sun. This can go on and on. We are the size of a universe to an atom in our body ,thus means also we are big. However, this happens to everything everywhere. If there is space that has particles, those particles may be within an atom, trillions of atoms are in a cell (more than stars in our solar system) whichin cells are IN our blood ( 37 trillion cells). Our blood in our organs and muscles which is within our bodies. Our bodies may be within a house which is within a constituency, which is within a town, which is within a city/state/island which is within a country which is in a continent which is within a planet, which is within a solar system, within a galaxy, within A super cluster, which is within Galactic walls which is within the Cosmic web . "Everything is 'WITHIN' " which The Cosmic web itself is 'within' The Universe WHICH is 'within' a bubble or phenomenon that we cannot see. "Everything is within" something. Hold just a minute here though! We cannot see someone waving at us from an airplane. We only see the construct of the landscape, not the entities within them. Or an ant from the top of a sky scrapper, neither can we see blood cells attacking viruses n vice versa. Which is evidence just because we cannot see oxygen or detect an atom WITHIN does not mean its not there. The human eye cannot see U V rays or even oxygen and we are surrounded by it. So this means the Laws of physics as we KNOW it only applies to our subjective and objective reality. If u step back and look at the universe . We will only see the Cosmic Web of everything. Which seems to be all touching and connecting. Not until we zoom In does things seem to seperate. Just like a cell that make up our skin. Or a dog standing on an island. From far we only see the landscape , but as we zoom in other entities become observable. Inturn becoming a noticeable part of your reality. Things like Dark matter plays not with Morden physics and we cannot see it but it must exist because of the forces that pulls galaxies together and dark energy pushing entropy without the universe collapsing. However back to the Cosmic web. From a far everything is connected, but if u go close or zoom more is revealed within. The universe itself may be 'within' a muti-verse , another unverse, a blackhole, a quantum computer simulation or even apart of another living organism body that seems infinity large. But as we are universal size to an atom the universe can be a drop in the ocean or space to a greater being which most earthly beings cannot fathom or even believe because it is beyond preposterous. Even if your human eyes can go in front of it is to large or small to amke out. You cant see a mountain top from the exact bottom. It is to high in the clouds. Thus u cannot see the universe from one end to the other. The universe legs may be to long (just a joke ) .Somewhat though these are very much what it seems for the great reality. As laws of physics break down at quantum levels, entanglments, singularities and so on. There are dimensions that we cannot see and cannot detect things like :(earthly terms, but they seem to have more meanings) Super positions, past , future, the unconscious, concious thought, different colors of light , pure and dark energy etc. Please excuse my long reply , but this is just a brief explanation of not an objective or subjective reality. Which is infallible, but of the asubjective existence which seems verisimilitude.

  • @vinm300
    @vinm3002 жыл бұрын

    17:17 Imagine 2 billiard balls colliding in empty space. The scene looks the same forwards and backwards. Until you zoom in : then you see a hot-spot on each ball. The hot-spot is a record (memory) of the collision. That is what distinguishes past from future. (As Sean Carroll just said) If you run the film backwards, the heat in the balls would migrate to a spot then vanish after the collision. This is an extremely unlikely scenario. But not impossible. However, the chances would be 2 to the power a trillion trillion.

  • @nav5801

    @nav5801

    Жыл бұрын

    Can you tell me how you arrived at that number??

  • @danielmorris4676
    @danielmorris467611 ай бұрын

    I've thought about some of the issues that Dr. Sean Carroll discusses in this video. I'm nearly 80 years of age, during which time I've thought a great deal about them. Dr. Carroll's assertion that we experience the present moment as "real" is not the way I experience the present time. I've come to believe that our experiences are conditioned by how we are constructed by reality; namely, the way our brains function to construct the present time. I agree with Kant and Schopenhauer et al., insofar as the world we experience is incontrovertibly due to our brains experiencing space, time, and causality a priori. That is, space, time and causality are a single structure upon which we drape our experiences, both "inner" and "outer" experiences. As a result of my own thinking about these matters for many decades, I experience the present as both a real and an imagined reality simultaneously. Thus, I don't experience the present as merely "real", but rather as miraculous. We can come to no definite conclusion about the constitution of the self, nor can we about the constitution of space-time, but we can experience the miraculous continuously, and that is not inconvenient for me.

  • @blk4290
    @blk42904 жыл бұрын

    Dr. Carroll very correctly and nicely explain the time. I am grateful of him for such a wonderful presentation

  • @tedbates1236
    @tedbates12363 жыл бұрын

    Thank you Sean. Some people who think about such things go nuts like me. It's really nice to hear someone talk on these things who has an excellent mind and a noble character.

  • @jimsteen911

    @jimsteen911

    2 жыл бұрын

    Hahaha He's got a noble character? Based on what? Your intuition? Your long friendship? What an odd damn thing to say.

  • @mickparly

    @mickparly

    2 жыл бұрын

    How in the hell can you know anything about his character, is he yor friend?

  • @mach1853

    @mach1853

    Жыл бұрын

    must be the gold ring….

  • @robbie8142

    @robbie8142

    Жыл бұрын

    @ Ted Bates. Gee wiz Ted, you were practically shot without a trial for thanking someone and adding a personal compliment born out of gratitude and how YOU perceived the man's character based on his presentation! It's obvious you ought to be flogged immediately for LEAPING to such conclusions! 😶 I thought I'd chose the only emoji I've ever seen that portrays NO emotions. Hope I'm not flogged along side the likes of you Ted! 🤣🤣🤣 I hope that emoji was the appropriate one that expresses my view on the way you were fired upon. Good on you Ted for saying what you did and I say that because I appreciate your commending the presenter and for your humility in saying you can go nuts sometimes making sense of this sometimes very puzzling subject. That was a bit long toothed BUT there you have it. Over a year has gone by since your comment but if you look to your left and down at about a 30% angle you might be able to see me waving to you on that space/time graph 😁! Cya!

  • @funkiskunki
    @funkiskunki Жыл бұрын

    I now know that as much as science interests and amazes me especially astrophysics...astronomy...I will never fully grasp it, if I still mostly struggle even listening to Sean...still enjoyable..thanks for trying Sean Carrol...does anyone know anything that someone, who struggles like myself, could watch and maybe find easier to understand.

  • @icarus4233
    @icarus4233 Жыл бұрын

    Very interesting lecture. No doubt, professor Sean Carroll is not only very knowledgeable but also talented to explain complicated things to others in a very simple and understandable way. I am very pleased people can learn from such events and hope they (lectures) will grow over time.

  • @Gian-ni

    @Gian-ni

    11 ай бұрын

    Too bad he promotes gay propaganda. Didn't do it in this vid though

  • @JB_inks

    @JB_inks

    4 ай бұрын

    ​@@Gian-niwhat

  • @thegreatreverendx
    @thegreatreverendx4 жыл бұрын

    Eternalism - Where you know that all of your most embarrassing events in life are preserved forever.

  • @lenaak4806

    @lenaak4806

    3 жыл бұрын

    This makes me feel so uncomfy right now :I I already have a hard time dealing with all the embarassing moments through out my life XD and still I love the idea of Eternalism somehow...

  • @nemonomen3340

    @nemonomen3340

    2 жыл бұрын

    Fml. 😂🤦‍♂️

  • @AshishSingh-rb8kv

    @AshishSingh-rb8kv

    2 жыл бұрын

    Oh dear!

  • @pinesyeet

    @pinesyeet

    2 жыл бұрын

    Well, in that case you were also always going to do those emparrassing things anyway, so nobody can actually blame you for it

  • @thegreatreverendx

    @thegreatreverendx

    2 жыл бұрын

    @@pinesyeet Trrrrue.

  • @antoniocalhau4711
    @antoniocalhau47115 жыл бұрын

    One of the great things about most of The Great Courses (TGC) lectures that I have seen so far, like this one, is that professors, like Dr. Sean Caroll here, bind all the concepts involved together in great talks, you get to see the whole picture, the tree and the forest. When I was in college, we did the calculations, I took tests, exams, finals, but never really had the chance to see things like this, in a holistic way. And TGC do all this in all its courses consistently. I would say that all universities should have this for people to be able to follow up, and to be more connected! Not to mention that we can always revisit these lectures over and over again, for example in search of inspiration, to research any particular topic. They help us to go from the tree to the forest back and forth all the time consistently!

  • @davidtomlinson6138
    @davidtomlinson61382 жыл бұрын

    This chap explains things brilliantly , well interesting , fascinating , great stuff 🙂

  • @Wondrium

    @Wondrium

    2 жыл бұрын

    Thank you , David!

  • @bosstradingpro1910

    @bosstradingpro1910

    11 ай бұрын

    Time is like the measuring of changes between distance and events spawning from a sigularity; and consciousness is the recording of the disorder as it flows. Entropy must continue so the record is stored in created consciousness (example :a cell carrying out a function. The cell each time coded to make less mistakes than the last. Like learning to not destroy itself after continual repeated failures) by dark energy and the information is then evolved and replicated so that the samething does not infinity repeat. My perspective on the reality of the universe for everyone is different and subjective to that organism\being ,for an example. Scientist states that viruses, bacterias or cells are examples of living organisms that even live in our bodies and they carry out functions. Human beings also carry out functions; but we look at cells and viruses as a lesser life form of life. If there are advance or higher forms of life, they can also measure us human beings and state also that we are a lower form of life just as human beings may observe an ant as a lower form of life. However, because of this an ant may not be important to us, but if you try to squash an insect it will try to flee and preserve it's life thus means it's life must mean something to itself; but not to us. Even blood cells defend themselves when under a threat just as we do, but is the life of one blood cell important to us? Is the life of a human being urgent to a tree which is also a living organism. Human beings are the main cost for the destruction of trees whichin they've been here before we we're in existence. So are trees a higher life form than us? A more advance and higher life form may look at a tree and say this tree is much more important than a human being because it sustains life on this planet but human beings destroy the planet with human helping technology (depending on their perspective). All of this said humans may not be as prominent as we think If we remember the laws of physics breaks down on a quantum level. There are lengths like the plank length that are so small that it can be compared to the scale of the universe. So doesn't this mean that being that small you are in a universe of its own , within another observable universe but only observable by our knowledge by humans. If this is so then there must be other places the laws of physics break down also. If it does for the extremely small why not for the extremely big? Who is big and small anyways? We are small to our planet but our planet is small to our sun. This can go on and on. We are the size of a universe to an atom in our body ,thus means also we are big. However, this happens to everything everywhere. If there is space that has particles, those particles may be within an atom, trillions of atoms are in a cell (more than stars in our solar system) whichin cells are IN our blood ( 37 trillion cells). Our blood in our organs and muscles which is within our bodies. Our bodies may be within a house which is within a constituency, which is within a town, which is within a city/state/island which is within a country which is in a continent which is within a planet, which is within a solar system, within a galaxy, within A super cluster, which is within Galactic walls which is within the Cosmic web . "Everything is 'WITHIN' " which The Cosmic web itself is 'within' The Universe WHICH is 'within' a bubble or phenomenon that we cannot see. "Everything is within" something. Hold just a minute here though! We cannot see someone waving at us from an airplane. We only see the construct of the landscape, not the entities within them. Or an ant from the top of a sky scrapper, neither can we see blood cells attacking viruses n vice versa. Which is evidence just because we cannot see oxygen or detect an atom WITHIN does not mean its not there. The human eye cannot see U V rays or even oxygen and we are surrounded by it. So this means the Laws of physics as we KNOW it only applies to our subjective and objective reality. If u step back and look at the universe . We will only see the Cosmic Web of everything. Which seems to be all touching and connecting. Not until we zoom In does things seem to seperate. Just like a cell that make up our skin. Or a dog standing on an island. From far we only see the landscape , but as we zoom in other entities become observable. Inturn becoming a noticeable part of your reality. Things like Dark matter plays not with Morden physics and we cannot see it but it must exist because of the forces that pulls galaxies together and dark energy pushing entropy without the universe collapsing. However back to the Cosmic web. From a far everything is connected, but if u go close or zoom more is revealed within. The universe itself may be 'within' a muti-verse , another unverse, a blackhole, a quantum computer simulation or even apart of another living organism body that seems infinity large. But as we are universal size to an atom the universe can be a drop in the ocean or space to a greater being which most earthly beings cannot fathom or even believe because it is beyond preposterous. Even if your human eyes can go in front of it is to large or small to amke out. You cant see a mountain top from the exact bottom. It is to high in the clouds. Thus u cannot see the universe from one end to the other. The universe legs may be to long (just a joke ) .Somewhat though these are very much what it seems for the great reality. As laws of physics break down at quantum levels, entanglments, singularities and so on. There are dimensions that we cannot see and cannot detect things like :(earthly terms, but they seem to have more meanings) Super positions, past , future, the unconscious, concious thought, different colors of light , pure and dark energy etc. Please excuse my long reply , but this is just a brief explanation of not an objective or subjective reality. Which is infallible, but of the asubjective existence which seems verisimilitude.

  • @teejmorrison
    @teejmorrison Жыл бұрын

    “The universe is both each frame of the movie and all the series of the frames together.” When math becomes philosophy. Absolutely beautiful.

  • @paigeflett7429
    @paigeflett74294 жыл бұрын

    0:15 me, age 10, about to tell my mom I threw up in the middle of the night

  • @crazychailady4762

    @crazychailady4762

    3 жыл бұрын

    OML same 😂😂😂

  • @jetaime1982

    @jetaime1982

    3 жыл бұрын

    🤣🤣🤣

  • @donsoley746
    @donsoley7463 жыл бұрын

    The man is wonderful to listen to.

  • @yehmustafa2959
    @yehmustafa2959 Жыл бұрын

    What a fantastic lecture, thank you

  • @Klover288
    @Klover2883 ай бұрын

    This is incredibly fascinating and easy to follow. Wow

  • @HammerChen
    @HammerChen5 жыл бұрын

    Thank you Professor!

  • @golden-63
    @golden-635 жыл бұрын

    *" 'Time', he said, 'is what keeps everything from happening at once' ."* *Ray Cummings: The Girl in the Golden Atom, 1922*

  • @petersinclair3997

    @petersinclair3997

    4 жыл бұрын

    golden86 “You cannot enter the same river twice, because it is not the same river or the man.” Heraclitus.

  • @thomassoliton1482

    @thomassoliton1482

    4 жыл бұрын

    Great quote about time. Still, time and dimensiions are physical allusions created by our brain. A more realistic model of the world is to consider it from the perspective of patterns of energy. The solar system, for example, is a stable space-time pattern of energy. Consider it, for example, as a single material object., like an atom or a clock. But time is not an independent entity, it does not exist without spatial movement (like Sean moving his hands). What we misinterpret as "real" time, e.g. the passage of time, depends on our memory - it is a psychological process. We compare our "present" with our memories automatically, and realize they are not the same. Our brain generates the concept of time to account for the psychological discrepancy - it is generated by our brain to explain why we are not now where were a few seconds ago.

  • @mindstorms44

    @mindstorms44

    4 жыл бұрын

    @@thomassoliton1482 the last bit of your comment is rather poignant.

  • @thomassoliton1482

    @thomassoliton1482

    4 жыл бұрын

    Mindstorms44 Firesign Theater: "How can you be in two places at once, when you're not anywhere at all?"

  • @michaellewis7861

    @michaellewis7861

    4 жыл бұрын

    golden86 the presupposes the natural phenomenology of time.

  • @Dil.Careem
    @Dil.Careem Жыл бұрын

    Time is something that cannot be regained by anyone whether he is rich or poor. But many of us don’t value it. At Least try to spend it worthfully going forward by knowing the meaning of it from this video.

  • @khaledalsayegh6628
    @khaledalsayegh66284 ай бұрын

    Existence is nothing other than a flipbook. Already drawn from beginning to the end. It is very simple. Better than a flipbook, think of it as a sculpture, where events unravel from the bottom of the sculpture all the way to the top. Yet the sculpture is static. Our consciousness arises when particle X in our brain, at one slice of the sculpture, appear at point A, and in the next slice of sculpture, appears at point B. This gives rise to our consciousness and to the illusion that there is a past, present and a future unfolding.

  • @user-or7ji5hv8y
    @user-or7ji5hv8y3 жыл бұрын

    Wow, what a great lecture.

  • @nickbros
    @nickbros3 жыл бұрын

    Here's my take on it- We know that everything in the universe moves from low to high entropy(that's just how it works). Time is just the measure of the rate at which this happens and since we are all subject to it, we accept it as time. This predicts that time may have never existed before the bigbang because there probably was nothing to move from low to high entropy.

  • @stevenash9282

    @stevenash9282

    3 жыл бұрын

    except that one infinitely dense speck, no?

  • @stevenash9282

    @stevenash9282

    3 жыл бұрын

    @andrew gallovich i think that's the entire debate, whether space/time is primal or not. I see both sides, they both make good points but theyre also both severely lacking in evidence. Its mostly just philosophy anyways

  • @Chemike21

    @Chemike21

    3 жыл бұрын

    Space matter and energy exist. Time does not. Time is only a perception. It is a measurement we take of the energy and matter in space. Very simple.

  • @TheBoomotang

    @TheBoomotang

    Жыл бұрын

    @@stevenash9282 Infinite Density = Absence of Matter

  • @theoahmwa
    @theoahmwa Жыл бұрын

    Love it! Fantastic explanation with simple examples.

  • @bosstradingpro1910

    @bosstradingpro1910

    11 ай бұрын

    Time is like the measuring of changes between distance and events spawning from a sigularity; and consciousness is the recording of the disorder as it flows. Entropy must continue so the record is stored in created consciousness (example :a cell carrying out a function. The cell each time coded to make less mistakes than the last. Like learning to not destroy itself after continual repeated failures) by dark energy and the information is then evolved and replicated so that the samething does not infinity repeat. My perspective on the reality of the universe for everyone is different and subjective to that organism\being ,for an example. Scientist states that viruses, bacterias or cells are examples of living organisms that even live in our bodies and they carry out functions. Human beings also carry out functions; but we look at cells and viruses as a lesser life form of life. If there are advance or higher forms of life, they can also measure us human beings and state also that we are a lower form of life just as human beings may observe an ant as a lower form of life. However, because of this an ant may not be important to us, but if you try to squash an insect it will try to flee and preserve it's life thus means it's life must mean something to itself; but not to us. Even blood cells defend themselves when under a threat just as we do, but is the life of one blood cell important to us? Is the life of a human being urgent to a tree which is also a living organism. Human beings are the main cost for the destruction of trees whichin they've been here before we we're in existence. So are trees a higher life form than us? A more advance and higher life form may look at a tree and say this tree is much more important than a human being because it sustains life on this planet but human beings destroy the planet with human helping technology (depending on their perspective). All of this said humans may not be as prominent as we think If we remember the laws of physics breaks down on a quantum level. There are lengths like the plank length that are so small that it can be compared to the scale of the universe. So doesn't this mean that being that small you are in a universe of its own , within another observable universe but only observable by our knowledge by humans. If this is so then there must be other places the laws of physics break down also. If it does for the extremely small why not for the extremely big? Who is big and small anyways? We are small to our planet but our planet is small to our sun. This can go on and on. We are the size of a universe to an atom in our body ,thus means also we are big. However, this happens to everything everywhere. If there is space that has particles, those particles may be within an atom, trillions of atoms are in a cell (more than stars in our solar system) whichin cells are IN our blood ( 37 trillion cells). Our blood in our organs and muscles which is within our bodies. Our bodies may be within a house which is within a constituency, which is within a town, which is within a city/state/island which is within a country which is in a continent which is within a planet, which is within a solar system, within a galaxy, within A super cluster, which is within Galactic walls which is within the Cosmic web . "Everything is 'WITHIN' " which The Cosmic web itself is 'within' The Universe WHICH is 'within' a bubble or phenomenon that we cannot see. "Everything is within" something. Hold just a minute here though! We cannot see someone waving at us from an airplane. We only see the construct of the landscape, not the entities within them. Or an ant from the top of a sky scrapper, neither can we see blood cells attacking viruses n vice versa. Which is evidence just because we cannot see oxygen or detect an atom WITHIN does not mean its not there. The human eye cannot see U V rays or even oxygen and we are surrounded by it. So this means the Laws of physics as we KNOW it only applies to our subjective and objective reality. If u step back and look at the universe . We will only see the Cosmic Web of everything. Which seems to be all touching and connecting. Not until we zoom In does things seem to seperate. Just like a cell that make up our skin. Or a dog standing on an island. From far we only see the landscape , but as we zoom in other entities become observable. Inturn becoming a noticeable part of your reality. Things like Dark matter plays not with Morden physics and we cannot see it but it must exist because of the forces that pulls galaxies together and dark energy pushing entropy without the universe collapsing. However back to the Cosmic web. From a far everything is connected, but if u go close or zoom more is revealed within. The universe itself may be 'within' a muti-verse , another unverse, a blackhole, a quantum computer simulation or even apart of another living organism body that seems infinity large. But as we are universal size to an atom the universe can be a drop in the ocean or space to a greater being which most earthly beings cannot fathom or even believe because it is beyond preposterous. Even if your human eyes can go in front of it is to large or small to amke out. You cant see a mountain top from the exact bottom. It is to high in the clouds. Thus u cannot see the universe from one end to the other. The universe legs may be to long (just a joke ) .Somewhat though these are very much what it seems for the great reality. As laws of physics break down at quantum levels, entanglments, singularities and so on. There are dimensions that we cannot see and cannot detect things like :(earthly terms, but they seem to have more meanings) Super positions, past , future, the unconscious, concious thought, different colors of light , pure and dark energy etc. Please excuse my long reply , but this is just a brief explanation of not an objective or subjective reality. Which is infallible, but of the asubjective existence which seems verisimilitude.

  • @jamsheed819
    @jamsheed819 Жыл бұрын

    Thanks a lot dear ....for such an amazing exploration of time

  • @davez4285
    @davez42852 жыл бұрын

    What is time? Time is something that can be used to describe changes. If everything is static then there is no need of time. So time is a state variable. It is man-made, mathematical, non-physical variable, to describe the state changes of the universe. It is independent from space. The existence of universe doesn’t need time, it is our human being that needs time to describe the changes of our universe.

  • @InnerLuminosity

    @InnerLuminosity

    2 жыл бұрын

    BINGO

  • @ruthtoliver9038

    @ruthtoliver9038

    6 ай бұрын

    Only if TIME were man made, unless you're describing a concept of time that living beings have experienced and expressed over a period of Time 🕎🕛🤴🔱⚓🌊🐬🚀🌌

  • @brucema5659
    @brucema56592 жыл бұрын

    I often consider the movement of time is related to a “time field” which matters that have time sensitivity, such as consciousness, move through it according to the field guide direction. The speed the consciousness move through time depends on the contents of the matters. Similar to mass moving through space according to gravitational field. Of course this may only belong to science fiction. Even though we now consider space-time together, certain field could have effect only on part of the property of space-time.

  • @grayson1946

    @grayson1946

    Жыл бұрын

    Say what?! 😂😂😂

  • @stavvyburke
    @stavvyburke2 жыл бұрын

    Fantastic lecture!

  • @josecarlor.viador4716
    @josecarlor.viador47168 ай бұрын

    "Time is Poison, but at some point it also Miracle." My favorite poem but I don't remember who said that.

  • @Bassotronics
    @Bassotronics3 жыл бұрын

    Here is what puzzles me about present time and how Time “flows”. What is so special that I’m sensing present time right now? Is it like I’m alive and flowing on a Big Bang wave that is heading into the future with everybody else around me riding on it and experiencing? But what about before I was even born?; “present time” was still there and existed for everyone else prior. A person from the 1970s for example was in the “present time” the same way as I am now writing this. It makes me want to think that time does not “flow” but everything that will happen is already written and the people who are alive right now are just experiencing it which in turn is relative to each person. Are we riding in the Big Bang wave of time? I’m not sure about that since time is distorted with gravitational forces everywhere in the universe and where there’s a lot of gravitational force time can distort. What about planets or objects that are really close to a black hole of which distorts the fabric of spacetime? Probably for them, we are in the year 5061 while for us, we’re still in the year 2020. The notion of time as well as consciousness is very confusing and hard to grasp from many point of views.

  • @tedbates1236

    @tedbates1236

    3 жыл бұрын

    We all are given a short time to find something or someone. Some find it right away while others never find that something or someone but we all have a chance.

  • @Bassotronics

    @Bassotronics

    3 жыл бұрын

    @ *Ted Bates* The chance being the quantum mechanical probability of the shrodinger’s cat.

  • @Chrissy4605
    @Chrissy46053 жыл бұрын

    I took a picture of rain on a hand rail years ago. the Boka effect of soft focus in the close area, sharp focus in the fore ground and further forward it became more and more out of focus. I ultimately renamed the photo, "Time-line", because of how close to your past things are fading from your memories while in the present things are in sharp focus. The further forward you looked the more defocused and darker was the future.

  • @konkerouf
    @konkerouf Жыл бұрын

    I love the introduction. Brilliant

  • @brunomanoel9890
    @brunomanoel98902 жыл бұрын

    I never heard a very good explanation about the relation beetwen space and the time , and how these caracteristics behave itself one to another , i am impressive , pretty good job teacher Sean carroll !!

  • @Wondrium

    @Wondrium

    2 жыл бұрын

    Hi Bruno, thank you so much for your kind feedback! We truly pride ourselves on our professors and the depth of our content and are very glad you're enjoying our offerings. Thanks for being a fan!

  • @brunomanoel9890

    @brunomanoel9890

    2 жыл бұрын

    @@Wondrium that's really my pleasure .

  • @jefffarris3359
    @jefffarris33593 жыл бұрын

    I don't know how Sean even sleeps at night. His brain never stops

  • @alloneword154
    @alloneword1543 жыл бұрын

    Consciousness makes the flip book activate into motion. It’s just multiple moments like pictures being put into motion.

  • @JustNow42
    @JustNow425 ай бұрын

    BTW Galileo has a very precise manual stopwatch , as precise as any manual stopwatch we can make today. He filled a container with water. It was equipped with a small spout he could block with a finger. Measuring time he let the water run the measured time and then measured the weight of the water that ran out. So a clock with no pendulum or springs.

  • @soleaguirre100
    @soleaguirre100 Жыл бұрын

    Thanks!!! Mr. Carroll ! greetings from Santiago Chile 🇨🇱 at 11am o’clock more and less 😊Excellent reflection about 🕰 time 👏🏼👏🏼👏🏼

  • @feynmanschwingere_mc2270
    @feynmanschwingere_mc22702 жыл бұрын

    Sean Carroll is a freaking genius. He has a brilliant mind: the ability to COMMUNICATE this eloquently about a subject matter this complex is a sign of deep, deep intelligence. Verbal IQ is just as important as Mathematical IQ, alas without philosophy there is no physics. This is why, for centuries the field of physics was called "Natural Philosophy," and also why so many of histories most brilliant minds were philosophical inclined - Plato, Socrates, Aristole, Descartes, Leibniz, Newton, EINSTEIN, Goethe, Wittgenstein, Godel, Soyinka, Chomsky etc. Bravo Sean Carroll. I look forward to watching more of your lectures. Astounding video! I learned a lot.

  • @aalever
    @aalever3 жыл бұрын

    I'm sure I read somewhere once that time is effectively another manifestation of the force of gravity. Moving forward in time is traveling along the curvature of space-time effectively propelled by that same force. The constant which governs the predictable speed at which we do that is the same constant which governs the speed of light - meaning if you were to simulate our universe and only change that one constant, you would also change the speed of time. Does that ring any bells for anyone else?

  • @imsorryyourewelcome

    @imsorryyourewelcome

    Жыл бұрын

    Think about what it would mean for "moving forward in time" to just be shorthand for "traveling along the gravitationally induced curvature of spacetime". That would insinuate that time, itself, is actually created in discreet quantities by gravitational fields, and the more gravity there is, the more time there is. I.E. you get close to a singularity, you have to literally travel through more time to get anywhere. While it makes sense and seems to track with (at least my own understanding of how GR works), I think there is something fundamentally broken about that causal relationship. IMO, gravity does not cause time or spacetime curvature, it's the other way around - Time causes the curvature of space, which we call "gravity". I know it sounds like the same thing, but I think the distinction is important. I personally think Time is literally the only fundamental force in the universe, and all others are emergent phenomena. Anybody else wanna throw in an opinion/argument here?

  • @waltergiles86

    @waltergiles86

    Жыл бұрын

    Yes! Time is gravity made physical!

  • @paulcoffey359
    @paulcoffey3592 жыл бұрын

    Epic set. Nice touch with the clocks

  • @ToriKo_
    @ToriKo_ Жыл бұрын

    Incredible presentation skills. Great video

  • @Wondrium

    @Wondrium

    Жыл бұрын

    Thank you, Tori!

  • @spyrosspyrou5809
    @spyrosspyrou58094 жыл бұрын

    This was a truly great lecture, which certainly opened my eyes to a few aspects about time which I was wrong about. The only thing is that time is always described as something that passes us by at a particular rate which depends on where you are and how fast you are travelling. The reality is that time itself does not 'flow'. Moreover, it is like space in that we travel through it. The difference is that we can travel through space in any direction but we can only travel through time in one direction, albeit at different speeds. What the human mind finds hard to accept is that time is not a fundamental unit of the universe but speed is. We see speed as a construct of distance divided by time but the truth is that time is a construct of distance divided by speed, where distance and speed are the fundamental units, not time.

  • @kdawgg83

    @kdawgg83

    3 жыл бұрын

    So if you stand still then time doesn't elapse?

  • @spyrosspyrou5809

    @spyrosspyrou5809

    3 жыл бұрын

    It is impossible to 'stand still' in this universe. You are always on the move relative to another observer, and that means on the move through time as well as space.

  • @k-foodcompanykfc3900

    @k-foodcompanykfc3900

    3 жыл бұрын

    @@spyrosspyrou5809 Please help me understand if I got the point correctly. I am not a physicist nor very well educated on such issues. I am just trying to understand the basics... Time is not fundamental since it is created due to the expansion of the universe? Time was born with the big bang and for as long as the space created expands, we experience a linear progression of time towards a specific direction? So Is time a byproduct of space creation?

  • @gregkasza1925

    @gregkasza1925

    2 жыл бұрын

    @@kdawgg83 impossible to stand still. Where could you find a place where you are standing still?

  • @russellsimienii9343

    @russellsimienii9343

    2 жыл бұрын

    @@spyrosspyrou5809 Also, the element of entropy

  • @tonygonzalez8894
    @tonygonzalez88942 жыл бұрын

    First time seeing this video, and I got to say, I’m not very smart like college level or anything like that, but I always been a sucker for un-answered questioning and you just made my brain do BAM! This explains a lot

  • @vhawk1951kl

    @vhawk1951kl

    2 жыл бұрын

    Ask yourself: "How do I experience time?" On any view time is a wholly subjective experience. What else could it be but a word that conveys one or another experience? Rather obviously " the universe" - like any other universal, is imaginary in that it cannot be directly immediately personally experienced *A* "the universe" which is a vague unfocused idea - and no more than an idea

  • @dariusjaisingh1615
    @dariusjaisingh16152 жыл бұрын

    Best understandable explanation

  • @gremlinn7
    @gremlinn76 ай бұрын

    I tested pausing the video for a few seconds and then restarting it, thus temporarily "stopping time" in Sean's universe. True enough, he wasn't even able to detect that time had stopped.

  • @carloslember5945
    @carloslember59453 жыл бұрын

    Mind bending concept explained so eloquently and made so easy for a little brain like me to completely get it. LOVE YOU Sean Carroll

  • @gregkasza1925

    @gregkasza1925

    2 жыл бұрын

    Nothing small about your mind. You have everything you need in it.

  • @michwad
    @michwad5 жыл бұрын

    I think you overdid it a bit with all the clocks in the room! :) But great lecture

  • @arsenymakarov6961

    @arsenymakarov6961

    5 жыл бұрын

    why did they have to make the background so tasteless? just a white room or a green screen with post-production images (PBS Space time style) would have been much better than this outdated school director's office

  • @hybridwafer

    @hybridwafer

    5 жыл бұрын

    The setting, the cameras, the feeling that his movement and gestures were choreographed totally distracted me from anything interesting he had to say.

  • @illuderebeliarh1260

    @illuderebeliarh1260

    5 жыл бұрын

    good thing the other 75000 people that watched this dont care.

  • @DANGJOS

    @DANGJOS

    5 жыл бұрын

    You guys seem to complain about the silliest things

  • @matthewphilip1977
    @matthewphilip1977 Жыл бұрын

    He said we think of the past as 'over with'. I think most of us think of it as over with in terms of how all the matter and energy was arranged, but the matter and energy are not over with, they are here now, but in a different arrangement.

  • @MelissaThompson432
    @MelissaThompson432 Жыл бұрын

    7:18 I know the lead in had a purpose, but this is where I got on the bus: How are time and space different? You can go anywhere you want in space, but not in time. This was my immediate response.

  • @MatsBorgkvist
    @MatsBorgkvist2 жыл бұрын

    Mats Borgkvist says: It only applies to those who have such a notion of what time is. For my part, I mean that Professor Sean Carroll has confused the word time with the word duration and aging. Because I have no problem with time, as it is 'up to me' to choose which times I want to travel in, because it is I who chooses the time form I want to be in, which everyone can do and has done since time immemorial by choosing which verb form we should add our verb to the event in our languages ​​that indicates in what time we want to be in. It is thus easier to determine the time to travel to than to get to places. I have a hard time keeping up with the professor because I can go as fast and far as I like without any problems. The problem is that knowledge as a sect has kidnapped the word time from our human languages ​​and given the word a completely different meaning than the original, the one who does things and according to our intellectual property can not make clocks, namely measure time and own it with a stolen word that we humans exclusively already own by tradition but Galileo and Newton and Einstein have managed to push away with their original meaning when they together committed the copyright infringement in Pisa in 1610 and the rest of us let it be accepted by church opponents who should have known better than that be seduced by a Protestant mob. This in respond to the professor Sean Carroll's statement: ”We move through space as we like, we can choose to go to some other location in space, we can’t choose to go to some other location in time, we inevitably move through time at the rate of one second per second. Time is relentless whereas space is sort of ’up to us’ how to move in it. That gives us a certain perspective on what the world is.”

  • @sergiootero5904
    @sergiootero59043 жыл бұрын

    I love the 'subtle' theme of time being hinted at by the conservative use of clock props

  • @khinmaungthein2624
    @khinmaungthein2624 Жыл бұрын

    Very nice thinking and idea. Thank a lot.👍👍👍💪💪💪❤

  • @peterburandt4586
    @peterburandt4586 Жыл бұрын

    What I am deriving so far from this lecture - at a 16th-minute mark - are two observations: 1. My physical life is but a "movie" which I am forced to experience one frame at a time. 2. There is no present really. There are only the past and the future. The present does not last long enough to even consider seriously and yet that is when all reality takes place. 🤔

  • @barryzeeberg3672
    @barryzeeberg36722 жыл бұрын

    question about "presentism": what is the duration of the "current moment" - does it have a finite duration, or is it a point source, so to speak? either view seems to lead to philosophical and physical contradictions and paradoxes.

  • @pinesyeet

    @pinesyeet

    2 жыл бұрын

    I've been thinking a bit about this, and I think the answer, atleast how we experience it, is that it's floating. When you think about it, an absolute current moment is the same as the absolute middle point of a wheel. It exists, but it's not possible to get to it with anything other than math. A rotating wheel will have a point in the middle of it with 0 width, depth and height that everything else rotates around. As an example of the current moment, try putting on a song and try to distiguish certain points as moments. It won't work, the moment will be what you just heard over a very small timeframe that isn't 0.

  • @barryzeeberg3672

    @barryzeeberg3672

    2 жыл бұрын

    @@pinesyeet Thank you for your reply. If I understand what you are expressing, we need to consider the interaction of two different things, namely what the physical reality of time is, AND how our brain perceives time. Presumably the underlying physical reality of time could theoretically be measured accurately with the proper instrumentation, but our brain may distort the perception of that reality to a lesser or greater degree. To see this more clearly, we can use the well-studied model of how the brain extensively processes a real image (and also the amount of time it takes the brain to do so, according to "The Human Brain Book, "it takes about half a second for us to see an object consciously").

  • @pinesyeet

    @pinesyeet

    2 жыл бұрын

    @@barryzeeberg3672 Yes I think you're on the right track. Without saying for certain, I can imagine that if our brains suddenly worked twice as fast, time would seem to slow down around us while we felt normal (if that makes sense). In this case, a moment for this double speed person measured by a normal speed person would be half as long. This leads me to believe, again without certainty, that time and moments only has its size because of how we perceive it. If we went outside our universe and looked at it while we turned time faster and faster towards infinitely fast, it would seem like every moment that happens goes towards being 1. What we know from experience is that with the time constant, this isn't exactly true, as we have moments happening after each other. What you can say then by looking at our universe is "ok, then moments are just like a stack of paper on top of each other", but that isn't practically true either since we don't experience going from a still-frame to the next, but rather have fading back-end of the moment that becomes the past and gaining front-end of the moment that becomes the present. This leads me to believe that moments are a fluid thing, atleast for all intents and purposes how we perceive it.

  • @frankciborski835
    @frankciborski8355 жыл бұрын

    I agree with those commenters who say he communicates well. Easy to listen to.

  • @wprandall2452
    @wprandall2452 Жыл бұрын

    Time is an abstract law called "indefinite procedure". It is consecutive with a law called "continuance". Continuance is like the flame that goes upward but goes nowhere. It is what we call the "present" in time. The future is like the light that stays ahead of the flame.

  • @REDPUMPERNICKEL
    @REDPUMPERNICKEL Жыл бұрын

    Things move in one direction only. In whatever direction a thing is moving, it is but one among an infinite number of possible directions. The direction in which a thing is moving can obviously change but whatever the new direction it is always one direction. For the universe to appear as though time were running backward everything in the universe would have to have its direction reversed exactly. That would take twice as much inertial energy as currently exists in the universe (to say nothing of the difficulties involved in arranging for it to happen). Time is the concept we use to simplify the vast complexities involved in thinking about the movements of all things relative to each other. Time is not a thing-in-itself (like most people imagine). Time is a concept only. The concept is so useful, convenient and so deeply embedded in human psychology that most people simply cannot overcome their culturally induced lifelong belief in its objectivity to see the truth of the reality: there are only things moving relatively.

  • @mysticflyer2403
    @mysticflyer24034 жыл бұрын

    To me, time is simply the change in the state of the universe.

  • @mysticflyer2403

    @mysticflyer2403

    4 жыл бұрын

    Good question👌 Bearing in mind I am not a educated person, I am simply stating my opinion to add to the debate 🙈 Mr Einstein, Niels Bore, Richard feynman and others accept the theory of general relativity as a good (ish) model of how things work. Please look to them for an educated answer. That said 😁 Imagine the pre-Big Bang cosmos is a 28 (arbitory number) dimensional construct, in which all points are the same point (therefore no size and infinite size). Something within the construct changed ( I have seen a suggestion the speed of light could have changed slightly), triggering entropic deconstruction, triggering the big bang and our universe came into existence. Puff and there was light as the gods might have said 😁 We now know that the universe after the Big Bang was not uniform, areas of more and less energy. Further, when we look at distant objects we can see there are variations in the speed of light that must be taken into account in our observations. This suggests (to me) that the fabric of our universe has ripples like water, but in energy density. A Galaxy, for example, has an effect (we call Gravity) that is Inversely proportional to its energy density (mass). To go back to your question: Say we had two spaceships parked next to each other and each of us had a super accurate clock (our way of defining the changing state of the universe at our location). Then you sped off at close to the speed of light and I stayed still for a period of one year relative to me. We know from experiment that our clocks would show a difference when you came back to my location and speed. The rate of change of the universe was slower for you at high speed. Inside your space ship everything would seem ‘normal’ but outside it the rate of change would be different relative to the local energy density. If it were possible for me to look through the window of your spaceship, while your are travelling at high speed, I would ‘observe’ the interior as being stationary. You would observe the universe changing at a dizzying rate.

  • @ozkurede

    @ozkurede

    3 жыл бұрын

    I would agree sir.

  • @jean-pierredevent970

    @jean-pierredevent970

    3 жыл бұрын

    I am wondering now what is even the (theoretical ) difference between moving through adjacent parallel universes ( like in the string multiverse) and moving through time. There is a clear direction but that could be the result of having always more worlds with more entropy to step into. A straight line is even not needed since the trajectory will always be logical. I admit that this idea is perhaps contradicted by the smooth, non discrete nature of time. And the question might come up if moving through space then, can also not be seen as a movement through adjacent parallel universes.

  • @laluzvioleta3
    @laluzvioleta34 жыл бұрын

    When does the future begin? When does the past stop? We are always at the same time, in the past, in the now and in the future...

  • @davidburr3091

    @davidburr3091

    3 жыл бұрын

    If I did understand presentism right, then "now" is when you "freeze" all movement in the entire universe, and then you call this moment "now". When there is some change or in this exemplification, when you "unfreeze" the universe and "freeze" it again (after something has moved) you get the new "now" and the moment before is just a memory. Contrary to the theory of eternalism, in which the past and future exist simultaneously but at another place of time because you see time as a dimension. But in both cases, you will never experience the past or the future, because the future is just a prediction or in the case of eternalism, something that happens at another place in time and the past is either just a memory or sth that happens at another place in time as you are. Therefore, the past doesn't stop because the past always was or is at another place in time and the future will never begin because it will ever be the prediction or another place of time. We are at the same time neither in the future nor in the past. We are always in the now.

  • @curiouscat94x77

    @curiouscat94x77

    3 жыл бұрын

    I have a similar question about existence and non-existence.

  • @deedunn1989
    @deedunn19892 жыл бұрын

    I love watching stuff like this high

  • @AnthonyChinaski
    @AnthonyChinaski3 жыл бұрын

    Time is how we perceive entropy. We are all at one place and everywhere, just spread out by the arrow of time. What has happened has already happened, what is happening is already happening and what will happen, will, no matter what has happened and is happening, will happen.

  • @AnthonyChinaski

    @AnthonyChinaski

    2 жыл бұрын

    @@beyondscence4384 👌 Subbed. Keep making videos and entertaining and enlightening our family

  • @beyondscence4384

    @beyondscence4384

    2 жыл бұрын

    @@AnthonyChinaski sure! Anthony, I will definitely do that.

  • @MrRozsta
    @MrRozsta3 жыл бұрын

    I’ve been thinking, and I came to the conclusion that in fact the term “time” is confusing. We think about what “time” is, but in fact there is no time, only “time-flow”. Time is not a thing, but rather a process. I think helps understanding things by using this terminology, helps us asking the right questions. Space is the water, and time-flow is the flow of the water.

  • @thailandertravel

    @thailandertravel

    2 жыл бұрын

    tiredness correlation with day/night time cycle

  • @FM-kl1wv

    @FM-kl1wv

    2 жыл бұрын

    I don’t know if “process” is the best word to use to describe time for this theory

  • @woodwork5574
    @woodwork55744 жыл бұрын

    I arrived early for the past and late for the future so now I’m in limbo waiting for the present.

  • @melissasalasblair5273
    @melissasalasblair5273 Жыл бұрын

    Streamed this before, and enjoyed it. Will watch again 🌌💭⏳🌟📗 7:33

  • @wesinat0r
    @wesinat0r2 жыл бұрын

    This is, was, and will be a great video!

  • @Wondrium

    @Wondrium

    2 жыл бұрын

    Thanks, Wesley! We appreciate your feedback.

  • @baflange6477
    @baflange64775 жыл бұрын

    Ever wonder why the smartest ppl in the world ponder the same thing as 7 yr old children?

  • @phazjordan8386

    @phazjordan8386

    5 жыл бұрын

    Baf Lange I wonder why every time I hear one ask a question 😂

  • @weshard1

    @weshard1

    5 жыл бұрын

    Like why does my snot taste good?

  • @phazjordan8386

    @phazjordan8386

    5 жыл бұрын

    weshard1 no seven year old have asked me this.

  • @baflange6477

    @baflange6477

    5 жыл бұрын

    Jordan dynamite drop in Monty, that school really paying off

  • @weshard1

    @weshard1

    5 жыл бұрын

    phaz jordan Would you?!

  • @jean-pierredevent970
    @jean-pierredevent9703 жыл бұрын

    I can't follow the other physics or science channels but professor Carroll is able to put himself in the shoes of people with mathematical talent. It's possible certain topics are so much only math that you can't explain them any simpler without getting very vague.

  • @user-uu7sk8bz5l
    @user-uu7sk8bz5l2 жыл бұрын

    I refered to Buddihist philosophy Sir.It really was helpful not only to map out the Universe but find your own self within.

  • @leogarcia1761
    @leogarcia17612 жыл бұрын

    We are not hurling through space but falling through time. We have already lived all that we see n experience on a daily. "Life" is about finding out why we made those choices.

  • @lmelin1959
    @lmelin19595 жыл бұрын

    Thanks to prof Carroll for yet another very interesting lecture.

  • @Wondrium

    @Wondrium

    5 жыл бұрын

    Hello Lorne. Thank you so much for your kind feedback! We pride ourselves on our professors and are very glad you´re enjoying our offerings. Thanks for being a fan!

  • @muffinman8744
    @muffinman87442 жыл бұрын

    As a non physicists(like myself), I really enjoyed this.

  • @prettysavage2203
    @prettysavage22032 жыл бұрын

    Mind blowing video sir 🤩

  • @RaptorSeer
    @RaptorSeer5 ай бұрын

    lol I never thought the Fermata would come up in a serious physics lecture. Thanks Dr. Carroll and Wondrium!

  • @asecretturning
    @asecretturning4 жыл бұрын

    "It always is good to go back to what clocks do." -Professor Sean Carroll 2018

  • @dsbiddle

    @dsbiddle

    4 жыл бұрын

    reikimonster - sure. But time still exists even if every clock stopped working.

  • @asecretturning

    @asecretturning

    4 жыл бұрын

    @@dsbiddle oh...kay?

  • @DenverDonate
    @DenverDonate5 жыл бұрын

    Before Einstein worked out the equations General Relativity he thought about them....we don't place enough emphasis on sitting around and thinking about things.

  • @dennisgalvin2521

    @dennisgalvin2521

    3 жыл бұрын

    Very true, all they do is regurgitate what's already been said.

  • @Chemike21

    @Chemike21

    3 жыл бұрын

    I believe you can come to scientific discoveries simply by thinking. Using logic and reason will get you much more if used correctly than hundreds of thousands of experiments. This is the ways of the old. People don't discover things in this way anymore. Well not all people.

  • @rachaelpellagrini1669
    @rachaelpellagrini16693 ай бұрын

    Physics and Wittgenstein. The closer we come to grasping Time, the more elusive it becomes, and we are always in need of the language for it; the two working in tangent continually. 🤔

  • @AnilKumar-xl2te
    @AnilKumar-xl2te Жыл бұрын

    Great explanation