Can we travel back in time? | Sean Carroll and Lex Fridman
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- čas přidán 22. 04. 2024
- Lex Fridman Podcast full episode: • Sean Carroll: General ...
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GUEST BIO:
Sean Carroll is a theoretical physicist, author, and host of Mindscape podcast.
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Full podcast episode: czcams.com/video/tdv7r2JSokI/video.html
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Guest bio: Sean Carroll is a theoretical physicist, author, and host of Mindscape podcast.
Smart guy. He has huge processing power, speed and memory. Having all three is very rare.
An excellent summation.
Time is not a road which we can travel. Its just a construct which humans use to track and record passage of events. Nothing more, nothing less.
I agree but,
If there's 11 dimensions, time being 1 of them, then the fabric of space time could be traveled via blackholes possibly. It would be a matter of surviving the travel.
I have no idea what he just said, but love the uploads Lex! 🤣
Time is hyper fundamental start there ❤
yes ❤
loved this guy in will & grace
"The order of time" by carlo rovelli is a mind f..k of a read but well worth it.
It’s incredible how much we know, how much we don’t know, and how much we think we know and are completely wrong about.
The past is just a different arrangement of atoms. There is no past in the sense of a place where it still is how it was...
Everything all at once just different arrangement of these
Just seems forever, for us
I worry that if we could go back in time, we’ve just added another reason to go to war. This country or group wants to change this part of history but that means another country has to make a big sacrifice and they don’t want to, etc. sometimes it’s better to leave things alone
There’s my two cents. Happy Tuesday everyone!
Don't worry. It's impossible to travel back in time.
To the first thanksgiving to get turkeys of the menu?
نعم إذا سجلت الحاضر و المستقبل و المجال الكمي هو مكان تسجيل الزمن يمكنك السفر إلى الماضي إذا سجلت الحاضر و المستقبل و يجب العمل على ذلك يأخذ جهد بدون ذاكرة الحاضر والمستقبل يصعب السفر إلى الماضي
What if our universe is just one atom of an even greater system - or some blackbox created as a mere facet to something else? Maybe our stars are just the atoms that power some giant desk clock or desktop computer at a greater scale, where we are actually in the microcosm.
🤯
it's called emergent system
The whole "an atom is just like a solar system" thing is only a speculative analogy at best. We know planets and objects in a gravitational orbit have a continuous range of possible energies. Electrons in an atom only have certain, discrete possible energies. If the quantum world and the large scale world are taken to have the same physics in this sense, transitions between those energy levels in atoms are like if your car went from 0 to 60 instantaneously, without ever achieving any speeds in between. With that kind of speculation, you need a way of making those theoretical pictures look the same. Now of course I believe there is an underlying physics that explains all of it at once, but the whole "an atom is just like a solar system" thing just doesn't seem to cut it.
No it's not the case
Isn't watching a video like this time travel?
For sure! It’s the best we have at the moment but it’s also limited to the point when the video recorder/camera was created.
I love seeing this, gives me more confidence in my skill @ 40. A real OG Season 1 MLG baby
Simple answer is no, we can’t.
Good thing it’s not a simple question
Please every one under stand: The Earth moves through space. At any time, it is not where it once was. To time-travel, first, you would need to create teleportation. How do you expect that on a moving object with no anchored reference, that moving forward or backward in time that you would be in the same place? Do you not under stand?
I have a mere degree in Economics, meaning I am nothing more than a simple spectator here and a dummy fan of the wonders of science and mysteries of the universe. Having said that, I have feeling that when Lex an others ask this question, they're actually asking something like "Can you traverse back through Spacetime" in more layman's terms. Do you understand? :)
Well if you go back exactly one year to the second you would perfectly catch the previous orbit.
I'm kidding. We all know the universe is expanding. But the rest of us don't pretend to be experts.
So stfu and stuff your "do you not understand" pretensions in a sock, Professor Fullofyourself.
I don't think it's relevant to the basic question of whether or not time travel backwards is possible. If the question was about traveling back in time and remaining on Earth, then sure...
If you time travel by reverse ibg the order of atoms, it would no a non issue. Do you not under stand?
Lol you have completely misunderstood not only the comments and potential answers given by Sean but the question itself.
A lot of people seem to think that a sort of "baseline" state of being in the universe, or lack thereof, was nothingness, where everything sprung somehow. What if the baseline state of the universe is not nothingness but instead the opposite, everything? And in this state of everything are gaps of nothingness in scattered throughout.
The fact that the big bang started with a singularity has always bugged me for some reason.
What started the singularity
@@justinobrien1097god?
@@jakubzneba1965 I agree
God told the dust, “Come ye willingly or unwillingly, ye shall come.” The dust said, “I shall come willingly.”
Never. It would require more energy than the universe has.
That's ban interesting angle
Choose rich.
I had no idea there were many experts in relation to time travel. This comment section does not disappoint. Everyone seems to understand the mind of God or “evolution”.
I think you meant to say evolution, or the mind of “god”
There's no need for god, no
god either✌🏽✌🏽
you are the only one who doesn't understand how to time travel 😞
I would explain it to you but I have got other things to do right now
if you look in a mirror you see the past also if you see anything...its in the past...but your view is the present...so we are always in a time travel...and get from our present to the past of everything...
@@user-io5uw3qd9w Unless...
If your thoughts stopped.
Would there be any time?
It’s of the mind and not real.
It’s only NOW ever.
Unless of course you KNOW SOMEONE that’s been in the future or past EVER.
🤷♂️
Time is the 'shadow' of Motion, (Stuff-side)
Time do Only exist in the Consciousness
of Living Beings, (Life-Side)
Memory is the Highest of our Six Eternal Basic.Abilities.
So, Time is an Effect of our Travel,
and the stream of thoughts is also Motion.
There is NO time-travel, but most people have experience with De Ja vue',
most often Past, but also Future.
The Ability to Sense in Time, Past/Future
and the Ability to Sense in Space, Now-Time, somewhere else in space,
will gradually develops into permanent Abilities,
under control of the Will.
It is about Purpose and Ability, Not speed and distance.
So, Thoughts is Change, change is Motion, motion become Time,
and time become Time-Spaces, in our Memory/Consciousness.
If there were No Motion, there would be No time,
and if there were No Memory, there would be No recordings of Time.
There was nothing. Then it exploded. Then there was everything. And we know how hot it was the moment after nothing exploded and became everything. The riddles these ppl speak in might make sense to each other, but to me sounds as fantastical as any other creation myth. Except more arrogant. And without the poetry.
No, science doesnt have the answer to what was before the big bang or how it started but they have some ideas, none of which is that it started from "nothing". Even when Lawrence Krauss penned his book A universe from nothing he didn't mean a literal nothing because we do not know what nothing is. He talked about quantum fields and fluctuation potentialy triggering an event like the big bang. And not a ex nihilo type of universe state.
@popcultexpress Ahhh. The ingredients for everything were already there, from whence they came a riddle. Then the ingredients exploded, dispersing everything everywhere. Like Jiffy Pop, mysteriously appearing on a stove top. Magnificent.
@deanoost9599 Ah, but you completely ignored the first part of what I wrote which was that science doesn't have an answer to what was before the Big Bang. It could be that we may never know what happened but I suspect we will discover a mechanism to answer this question, which of course will open up many many many more questions. And whilst you fall to the fallacy of personal incredulity scientists will continue to work on these problems. The amazing thing is you are using a mobile phone or laptop to write here. And I know for a fact you cannot explain how these incredible pieces of science work. Please explain how a computer processor works and a microchip. Here is something that should be simple to answer. How does your laptop present you with a cursor and how does the operating system allow you to type word numbers etc? I know for a fact that even when consulting Google you could barely give a rudimentary explanation of the above processes let alone an in-depth coherent breakdown. But hey youve got the fucking gall to say these people speak in riddles. The fallacy of personal incredulity is strong with you buddy. Sheer fucking hubris.
True, more arrogant, as if it makes sense for them
Take on Bishop Robert Barron. Then you will see something that will shake your full reality.
Is he going to come out with Vatican's secrets?
Even if we could, once it becomes public knowledge, everyone would be time travelling making it as mundane as everyday commute. The whole appeal of time travel is that it gives us something special. What's so special about a Jew going back to kill Hitler but knowing that in another timeline he still killed 6 million of them - he still can't save them. Or if we could actually create a perfect universe where no crime or wrongdoing ever happened - that would then become the baseline of society, and we'll look at time travel as nothing more than means to an end. The whole allure is only because it's (currently) impossible. Once something becomes possible it becomes boring. Case in point: Electricity, Computers, ChatGPT.
ONLY HIM can
The video is fantastic. Shame that the comments are so braindead.
he's braindead for talking about quantum gravity
@@pondeify Why?
The comment section is like they let all the morons from the insane asylum on the computer (just the morons, not the smarter ones). Especially the ones that will shit on Sean Carroll while praising Lex, while Lex is incapable of listening to his guest, seemingly just waiting his turn to say what he thinks. Every time I give this channel a chance, I'm constantly disappointed (aside from hearing from a nice guest like Sean Carroll or someone else). Do people just take this guy seriously because he acts like Sam Harris Jr.?
Uhhh…, No! Jeez
I want to go back in time so that i can 1v1 Hitler fortnite style
This is who people should look up to, not some cringe tiktoker doing stupid sh*t!
Time travel in the general sense is not possible
aren't we travelling through time already?
Not possible ever?
@@pondeify time is an illusion there is only the aging process of no density of gravity
@@johncollins211 I misspoke, what I was trying to say was time traveling back in time is not possible. the universe is expanding constantly in motion at the subatomic level there is no way for a dynamic universe to repeat itself in the sense of "traveling back in time".
Time is not fundamental... If nothing in the universe would happen , how would time travel? I would not, because time is defined by motion and therefore not there if nothing is moving/happening... You can say that time will always be present, because for something to be it has to happen and therefore time would be generated
If the Big Simulator In The Sky is asking itself if this is all a simulation, the fucked-up confused identity-crisis Simulator needs to get Real.
Im not smart enough wish I was
Time sure IS ‘fun ta mentally’ consider!
Sorry.
Or: is the Universe a cryptographically-verifiable blockchain....
Many worlds is bs
No.
Yes.
Most nonsense waste of time
The universe does not have a memory. That's pretty clear - so when you want to go "back in time" there's nowhere to go to, if that makes sense, any more than if you want to walk around a house that's been knocked down