Is Time Travel Really Possible?

[@TheActionLab]

The weirdest part about this video is that while I was walking up to the bridge I had not made the invitations yet. However, I intended to make them in the future after the party. So that means if time travelers were to come or not would be completely dependent on only the thoughts in my head at that point. I simply had to think it or intend to do it and that meant it was already done in the future. So, to give me the best chance for time travelers to show up, I realized that no matter what happened I had to resolve in my brain that I was going to make the invitations after the party.

[@naveenchaudhary4072]

😳😳😳😳

[@memocity_ai]

👍

[@wpa106]

interesting af

im confused

[@thebeanieboi]

That is a really fun thing to think about. You would have had to have decide to send it to the future, but if if you didn't intend to, would it still have worked? So cool! Also I just realized that the bridge in the video is Tilikum bridge in Portland! Does the owner of one of my favorite science channels live in my home state?

[@ClipHero11]

Do you know what the difficult part is? He very likely didn't meet anyone at his party, but as explained by the self-consistency theorem he's probably aware that he has to make the video anyways, because otherwise it would be his own fault nobody showed up. Because if he didn't make the video after nobody showed up, he would cause nobody to show up in the past, even though he already knows noone was there.

[@Wreckin210]

Damn lol

[@ShaneHathaway]

Solution: I think he made the whole video before the party date, then released it afterward. That way the video wouldn't be influenced by the outcome of the party.

[@ClipHero11]

@@ShaneHathaway I like the thought that maybe he has had in on "unlisted" for a few weeks, and some KZbin content moderator who got to watch it early showed up to mess with him 😂

[@aryanmn1569]

I think base idea was event a be making video event b the party and event c uploading video.

[@markmuller7962]

And the whole process sounds kinda sad lol

[@RavenLuni]

Hope the party went well. I got my calculations wrong and landed in mid air 100 years before the bridge was built ;)

[@fltfathin]

somebody makes a troll comment later to move the venue 100m south to troll him lolz

[@therealfloppa]

did you not read the instructions?

[@justme-gd4gq]

@@therealfloppa he said his calculations were wrong, as in he meant to be at the proposed space and time but missed.

[@RavenLuni]

@@therealfloppa I did - turns out the numbers were in new-imperial instead of metric

[@ashanu7077]

What if I time travelled back but forgot the location

[@yinglish119]

What if, as a general rule of thumb, that time travelers traveling back in time must be in a "isolation bubble" to a read only version of the world. This way, they can see and view the events but never interact with the world as to not alter the events that happens after it.

[@rosyidharyadi7871]

it will still be fun for historians and archaeologists

[@nehemiahmordecai]

My theory is (I don't know if it has ever been states else where) If we were able to travel faster than the speed of light, that means we can observe events backwards. Wich makes us able to see the past, but not to interact with it. More like seeing reversed recorded version of real life. And I think it won't be effective, because you have to keep a line of sight of a place you want to observe during you travel.

[@yinglish119]

@@nehemiahmordecai if you can see in the past as you travel faster than light, how would time "resync" back to the current world when you slow down?

[@nehemiahmordecai]

@@yinglish119 I have no Idea.. Because, I would experience time dilation, my time will be way slower relatively to the people on earth, there for if I would slow down and come back to earth, pple on earth will be aged way far as I am. I think it's more of future time traveling while observing the past.. TBH, these are just ideas in my head without any proficiency in quantum physics or theory of relativity..

[@LiquorSTARTStheBICKERING]

I thought that existing or just standing breathing in a time or place u don’t belong can change a lot but ya maybe not completely everything

[@smilo9189]

I remember having a similar idea in elementary school. Me and a friend wrote a letter to our future selves that had the date and time and instructions to come to our school if we ever get the ability to time travel. The fun part was that some old guy actually showed up and looked around for a little bit, looking confused before he left and we totally freaked out, but I lost the letter quickly after the class and forgot the date so I guess the old guy wasn’t one of us in the end

[@ToxicFruitSnack]

That’s still pretty weird

[@timetravelmind...vasuki33]

Really....?

[@rakeshmore446]

Tf💀 i can't believe

[@bugsbunny8691]

Maybe that's why he was confused.

[@mast3rbang]

Why not create a heirloom to pass down to your descendants. That way it's possible one come to find you but didn't know what you looked like hence confusion. Ofcourse has to do it this way since you know what happened that time so, you have to arrange things to unfold a certain way.

[@spacepopeXIV]

You're seriously one of the best science channels on KZbin, you explain things so clearly and easily for any layman to understand and be completely astounded by. I really appreciate this channel and all that you do.

[@Tibbs_Farm]

I have a small feeling that Action Lab actually has a higher probability of time travelers showing up. 1) Confidentiality 2) it is at a location that could actually be viewed as people just walking over a bridge 3) action lab seems more fun than hawking

[@aur9035]

Damn the third one..

[@Buzzzy-bee]

Hm....yeah I guess

[@Tibbs_Farm]

@@aur9035 well, I figured. IF I HAD TIME TRAVEL I don't want to go to hawking's party. I am sure I am not the only person ever to exist, now or into the future to have that thought.

[@malchar2]

Should throw a party for non-time-travelers as a control group.

[@krybxby]

@@aur9035 yea right poowr Hawking 😭😂

[@surajvkothari]

The closest I got to time travel is travelling into the future. It's when we go to deep sleep at night. Since are senses are reduced, the passage of time is not felt, therefore what seems like about 10 hours, feels like a couple minutes!

[@luucid5734]

Well that’s not really time travel it’s just we’re not conscious so we dont have a sense of time

[@KIWI_fx]

Yh our brain doesnt have conscious while sleeping so it feels like couple of minutes it's basically not time travel

[@maxxysitlhou6266]

You sleep for ten hours

[@lexwithbub]

Time travel is possible. You can travel one minute into the future, but it takes you one minute to get there 😉

[@SpringySpring04]

Sleep is just a time machine o breakfast

[@joelcathey]

Has anyone tried to explain how time traveling to the same geographical location on Earth could theoretically happen, given that the earth’s universal location is changing drastically every second? Something like 250 miles per second… Like would wormholes be linked to a gravitational field or something?

[@gut2814]

It can be, because doesn't exist a perfect stationary position, every thing is moving. (I'm studying english. Can you tell me if I goes wrong?)

[@maddercat]

Yes this is one the actual first massive problems you realize when you start trying to mess with forces that negate and screw with spacetime...if you were actually to time travel you would no longer be subject to the earths gravity and you'd just fly straight though the earth or out into space, so trying to get to a position on the surface of the earth at a specific time becomes not only a problem of time but of 3 dimensional space as well very much.

[@MrHowzaa]

@@maddercat actually many time travel theories support the existance of the entire earth as being in a type of domain. A time traveler would never leave earth and be suspended somewhere in space but the real danger is materializing inside of a mountain or building.

[@maddercat]

@@MrHowzaa Theoretically if you were to warp space time to the point of having the power of a singularity, earth would be massively effected and the orbit of the earth would no doubt be around you, as well as the sun....so yeah that wouldnt be good, also the moon would probably be pulled into the earth where you were doing your experiment.

[@ivanredinger969]

So basically relative time travel is impossible because it would need an axis of some sort to base your location. But it can't just use a location on Earth because Earth is moving through space. This would also mean that nothing in space could be the axis either. I love it when people overthink nonsense..... Lol

[@callmeandoru2627]

Hey, I just wanna say that thanks for inviting me to the party. It's been really fun conversing with you about all the things that happened during the last 60 or so years.

[@theironrubberduck]

Is KZbin still a thing 60 years ago?

[@gut2814]

OwO

[@k.k9206]

I think another cool idea would be if the tome travelers left a rock or object at a disclosed location. No one would ever see them, but you would have the object as proof of the existence of time travel.

[@markmuller7962]

I'd advocate for something more peculiar than a rock 😅

[@cmpj519]

NO, not a good idea. The irrefutable evidence would influence the time line more than just meeting a traveler.

[@JNJNRobin1337]

i'd just experiment by giving nanachi plushies to random people in the past with the perfume included

[@gabrielforgues5]

@@cmpj519 if it happens, its because its meant to happens in the future, isnt it?

[@sorryididntnoticedmyname3925]

I like tome traveler

[@Arick_jr]

The more I think of Time-Travel in my head makes me go down in a spiral of what could happen if I met my past self and did something. What if I'm not the same person? What if I have different living circumstances? What if it makes a loop that keeps repeating it's self? What if there is time travelers among us? I keep having those thoughts that make you wonder if this could actually be possible and work to our benefit.

[@sowianskizonierz2693]

Good thing time travel isn't real

[@giraffeorganic]

Lol time travel to the year of covid, Ukraine war, and a spike in senseless killing and school shootings? Nah

[@erikawanner7355]

And that’s the paradox… why time travel into the past is not likely possible

[@JNJNRobin1337]

personally such just makes me think of myself encountering a squad of myself from different timelines each as result being different (whether from time travel or otherwise] through seperate events and technology

[@Stargaze79]

Check out Stanislaw Lem's The star diaries, The seventh voyage - it's a classic!

[@h-e-acc]

This is the kind of Action Lab content I’ve been waiting for. Please, next, explore warp/faster than light travel 🤣

[@kidnamedgrass]

You mean squarespace videos

[@stare4539]

fr

[@mikeheavyheart5114]

No Comment,

[@ismaelabdallahiserte6938]

It doesn't travel faster than light, it gets to the point faster than light would do

[@guycha0s380]

Just saying, nasa was all behind his back when recording the video cuz they already time travel

[@someguyoninternet641]

0:27 Action Lab : "You guys here for the party ? " The Guy : "Yeah" I don't know if it's fake or not but this part makes me excited.

[@amazinghistoryofvlogging6894]

It was really great to meet you. Thanks again for the invite.

[@10ON10]

*Imagine an alien shows up at the party!*

[@datHDgameplay]

that's a + :)

[@XariksBeatbox]

You, you again

[@IN-pr3lw]

Ayy lmao

[@eterna2242]

in the future human and alien coexist so the alien come along with the human to the party

[@bamweasel]

Someone's about to school me on how I got this all wrong, and I'm 100% down for the lesson I'm going to learn from saying this, but doesn't time move at different speeds in different parts of the universe? If so, wouldn't the thousands of years it would take to reach a far-off civilization that can make use of the signal be meaningless if they had some kind of wormhole technology to reach Earth immediately after viewing? I'd imagine they'd reach Earth in their relative past, possibly in time to make the party.

[@jer103]

1. There is time travel in movies where the rules and laws change depending on how they want the rules to work. 2. If you were to time travel, in my opinion, you would always be going to different timelines like in a multiverse. That different decisions and actions would play out differently. This is seen if you saw the TV show Quantum Leap in the 80's.

[@Deplayo]

same from the theory jhon titor made

[@itsjustoku]

@Jeremy Thelen I totally agree with you, I think our timelines are what make multiverses !

[@ThatUnknownDude_]

A new series in my watchlist. Thanks

[@onlimi616]

The problem I have with that theory is that it means that any time traveler at any instant in time, has the power to create an entire universe with just the drop of a hat. Hmm.... that sounds like an awful lot of power for any one person to have. By just walking down the street, any time traveler could create 1000's or millions of new universes.

[@itsjustoku]

@@onlimi616 That's why universes are infinite, every thought is a existing universe I guess, which you can't control but to live on, so even if you've so much power, you won't know how to control or even use it, maybe those are the rules of the universe !

[@malchar2]

There was a theory somewhere that time-travel portals could be created. If you enter the portal, you emerge from another portal that was created by someone else at a different space/time. This "solves" Hawking's problem, because it means that time travel could still be possible, but it would be limited so that you can only travel between portals that were built after the invention of the time-travel portal. You could never go back to a time before the portals were invented because there would not be any portals there to exit from.

[@affyne]

is this the same theory which was implemented in the series "dark"?

[@CYON4D]

Reminds me of the movie Primer in which the characters can not go to a time before the time machine was invented.

[@giltyascharged]

i remember something about a laser hitting mirrors in a loop that go on forever.. and technically those photons are traveling forever as long as that machines is on. so if you put like a signal in those photons in the future.. could there be a possible way to pick up that signal in the past when the machine was turned on

[@ikitclaw7146]

If you have a wormhole and 1 end is near a blackhole, that end will be under the effect of time dilation and time will pass more slowly there than the other end thats in open space, so going from open space to black hole would be time travel and allow you to go back further as more time passes.

[@markmuller7962]

The scary part is the moment one activates the portal for the first time on earth, one may expect hordes of weird creatures and aliens to suddenly enter our time frame... DOOM was right... From the beginning

[@ProperGanderSaul]

I was there along with 15 other time travelers. I don't mind talking about it because I didn't guarantee any confidentiality. Plus I traveled back for the party but am now stuck here. Hoping future me sees this and makes sure to get a ride home before getting stuck in the past forever.

[@yuanledesma6951]

Now tell me some lottery numbers

[@JG-ij5hb]

I just travel there on Thursday, beautiful bridge and I had a wonderful time. Never thought he was the tall in person

[@wesjames6060]

That was such a great party I had a fantastic time I cant wait to go I'm really excited!

[@goldphoti]

xD

[@malcolmgeldmacher4998]

One of my favorite time travel paradoxes is from Eoin Colfer’s Artemis Fowl: The Time Paradox. (Spoilers) Artemis travels into the past to find an animal that can save his mom. But the reason his mom needed saving in the first place ends up being because he went into the past to try to save her. Probably doesn’t make as much sense here, but it’s well described in the book.

[@malcolmgeldmacher4998]

@UCcCdA7AhmnYs-6zXylM7VrQ yeah! Similar to that! I had no idea that was what that song is about!

[@Jairseph]

such a good and underrated book series, recommend it to anyone that likes fantasy books similar to harry potter

[@malcolmgeldmacher4998]

@@Jairseph right!? And unfortunately the movie was terrible. 😞

[@ThatUnknownDude_]

So basically you are the cause of the thing you are trying to stop. So like another example: you go to past to stop Hitler to cause WWII, but you going to past _was_ the reason Hitler caused WWII

[@malcolmgeldmacher4998]

@@ThatUnknownDude_ Exactly!

[@רפאל-ב]

What if time machines actually work like checkpoints, so as long as we don't already have a machine for the future people to arrive to, they can't go back to our time

[@Thestickcreator]

Steins Gate? 😂

[@spondylus4784]

also could be: there is a single time machine, lets say its built in the us on 2030. The contents within the machine can time travel to any point in time the machine already exists...

[@GurrenPrime]

I feel like that’s the most plausible way for time travel to the past to work. I suppose if white holes are ever discovered to exist, then those could act as the “check points” but idk if anybody’s gonna be crazy enough to actually use real black holes for time travel.

[@sanchu6335]

@@spondylus4784 imagine the first guy trying that like "oh my god I got it to work, I'm a genius! ...oh I'm 5 seconds in the past"

[@The_Great_Randu]

The End of Eternity by Isaac Asimov

[@Tiedyeman]

One thing almost any theory of time travel overlooks is space. To travel back in time you'd have to go back to where the Earth was at that time, which could be thousands or millions of miles from where it is in the present as the entire solar system moves through the galaxy at a pretty good pace. The galaxy is also in motion through the cosmos, all of these motions and distances would have to be accounted for or you'd end up in space without a planet to stand on.

[@Tiedyeman]

@Deng Nicca stop breathing, you're wasting oxygen that intelligent people need.

[@williamvalente6820]

If time travel were possible. I would like to think that there would be boundaries that prevent us from altering the past. Those boundaries would probably prevent us from being seen, heard, and prevent us from being able to interact with anything. Time travelers would merely be invisible spectators, studying history through a higher dimension. Ever have a feeling you were being watched?

[@caliaster]

Act of seeing itself have consequences. To see, photons has to reflect off a surface and reach our eyes. So, if time travelers looking at us will be like, some photons which should go into space or hit other places will reach their eyes or their observing device, like a butterfly effect it may have consequences in far future or near future.

[@Golden_Projects]

if you couldn't interact with anything you would be blind (no touching photons), deaf (no touching air / other mediums of sound) and couldn't breathe. You basically wouldn't exist

[@Jcraft174]

@@caliaster Maybe the invisible spectators experience a 'unique' physics law that prevents them from interfering with the emitted and reflected photons, thus allowing them to only see things, without affecting the future timeline

[@Randomonium66]

I have that feeling right now on the toilet! I thought that was the government with their patented Toilet Cam...

[@MattExzy]

I feel like we should've picked up alien signals by now... maybe that's the problem, we're in a black hole or something.

[@AlberTr0n1cOfficial]

Time traveling is one of the most interesting yet complex concepts in my opinion.

[@Arick_jr]

The more I think of Time-Travel in my head makes me go down in a spiral of what could happen if I met my past self and did something. What if I'm not the same person? What if I have different living circumstances? What if it makes a loop that keeps repeating it's self? What if there is time travelers among us? I keep having those thoughts that make you wonder if this could actually be possible and work to our benefit.

[@AlberTr0n1cOfficial]

@@Arick_jr I have the same exact mindset as you have honestly and that’s how I think of time traveling honestly like it’s crazy!

[@suryakamalnd9888]

Honestly, what if just mabe what if we were a simulation in a quantom computer and not in real life... A similar question to "Where did the information come from" a more complex question? And one more. Where is aliens? A even complex question . Even complex what is the reason being human existence... Honestly I feel that the concept of Questions is more complex..... M

[@Arick_jr]

@@suryakamalnd9888 🤔

[@Arick_jr]

@@AlberTr0n1cOfficial nice to know people actually think of this.

[@DarknikeX]

Very interesting experiment. I remember reading about Stephen Hawking's experiment. Since Time Travel probably be achievable in the far far future (if possible at all), I was thinking it would be impossible to communicate a message that would stand the test of time for a time traveller to find it. There could have been an Ancient Egyptian invitation somewhere and we wouldn't understand it because of it's condition. I think we'd also need to formulate it in a way that is decipherable, like the message on the Voyager missions.

[@audi-quattro]

you go back as far as you can with understanding them and ask them to translate your request in the current language and then go back some more

[@Volt64bolt]

@@audi-quattro but how would you know you need to go back to translate it. Also that wouldn’t really work backwards, only forwards kinda

[@donaldhobson8873]

Recording data has kind of got a lot easier, due to more modern tech. The future is very big. Assuming humanity spreads across the galaxy, and thrives for a billion years, even if only a tiny fraction of those people go back in time to near us, we shouldn't be able to move for time travelers.

[@audi-quattro]

@@Volt64bolt archiologists like to know whats written where so if we had time travel before we could read hyroglifics we would have gone back to that time and saw that people knew hyroglifics and some other language which we understand or know who understands it and a language we understand to teach us hyroglifics and then we could read everything in hyroglifics including some random tablet which has an invitation to a time travler meeting

[@Aguijon1982]

How about a party offering sex for time travellers, that would be understood today and anytime in the past and future lol

[@NickWrightDataYT]

Thank you! I was so annoyed that he told everyone that no one showed up--by doing so, he ensured that no one would show up! Everyone in the future would know that no one showed up, so they wouldn't attempt to go. Why risk breaking the space-time continuum via paradox, or risk possibly irrevocably branching off into an alternate reality a la Endgame? Keeping the list confidential is WAY better! Unfortunately only you know if it worked lol

[@markmuller7962]

I'd rather say: "why risk that something horrible happens to you effectively impeding you to time travel or to reach the location in order to prevent a time paradox while knowing that you'll never get there for one reason or another"

[@PADARM]

He looks very happy, I think someone showed up

[@smooth_ops2942]

@@PADARM HAHA..

[@AverLife]

If you already had the party, then you know it was already a failure. Fairy tales...

[@Dkgow]

But if people show up, then the proof that time travel is possible would be a significant historical event for today, as it will be a normal occurrence in the future since they are able to come back to this time. So keeping it confidential, keeps everyone Now from ever knowing if time travel is possible, and only leaving it up to the people who already know it is.

[@tonyf.9806]

There's a few different timetravel options: (1) Back To The Future/X-Men Days Of Future Past: you can go back in time, change something in the past, and change the future (your present), but with no memory of the changes up until that point. (2) Avengers Endgame: You can go back into the past to change the future, but it only affects that timeline's future, not the one you came from. (3) Red Vs Blue/Harry Potter and the Prisoner of Azkaban: You go back in time to change the future (or so you think), but what you do in the past is what you did in your present past and was always supposed to happen for events to turn out the way they did. So doing an action, or not doing an action, to change the future (as you think it will), was something you already did to make events occur as they did. The mindfuck from this comes from where did it start as it's a closed loop (like the Einstein example in the video).

[@podiacider]

6:11 just like in Gravity Falls when Soos teaches Dipper and Mabel a trick with vending machines. Then the twins go back in time and tell young Soos. Years later, Soos tells the twins about the trick. Then the twins go back in time and tell young Soos. Years later, Soos tells the twins about the trick. Then the twins go back in time and tell young Soos. Years later, Soos tells the twins about the trick. Then the twins go back in time and tell young Soos. Years later, Soos tells the twins about the trick. Then the twins go back in time and tell young Soos. Years later, Soos tells the twins about the trick. Then the twins go back in time and tell young Soos. Years later, Soos tells the twins about the trick. Then the twins go back in time and tell young Soos. Years later, Soos tells the twins about the trick. Then the twins go back in time and tell young Soos. Years later, Soos tells the twins about the trick. Then the twins go back in time and tell young Soos. Years later, Soos tells the twins about the trick. Then the twins go back in time and tell young Soos. Years later, Soos tells the twins about the trick. Then the twins go back in time and tell young Soos. Years later, Soos tells the twins about the trick…

[@dankers12]

This is literally the first party I've ever been invited to and I have to invent a time machine to attend? Can I just bring some potato salad or something instead?

[@danielyuan9862]

Just ask the people in the future to bring a time traveler to you.

[@xealixcrowing7659]

Paradox videos are always fun. Love to see more of them.

[@Mayo_Lawrence]

Just imagine Stephan Hawking showed up. That would be legitimately breath taking and proud of him simultaneously.

[@lubomirkubasdQw4w9WgXcQ]

he couldn't show up because he is already dead

[@MrElvis1971]

@@lubomirkubasdQw4w9WgXcQ maybe he invented time travel before he died.

[@superfluidity]

@@lubomirkubasdQw4w9WgXcQ Maybe he traveled to the future before and back before he died. He could travel back from the future to the Action Lab party.

[@i.mJackWilson]

Stephan Hawking from the multiverse

[@MrElvis1971]

@@i.mJackWilson wouldn't it be funny if thousands of Stephens turned up from different multiverses.

[@evan__kumar]

IM SO IN NEED OF A TIME MACHINE

[@Bocephus_McQuade]

party was a blast man, thanks for having us!!

[@Desrtfox71]

So, of course we already know that no one showed up for the time travel party that is/was a time traveler. If that did happen, then clearly the promise to keep it all confidential would have been broken. So the self consistency here, or closed loop, is that nothing took place.

[@Nefville]

The invitation was not confidential, only the attendees. We know the party happened and in say 10 years if you wanted to use a time machine to attend the party then your attendance would not affect this video because it was kept confidential.

[@Desrtfox71]

@@Nefville Except if anyone actually showed up, the attendees, the confidentiality agreement would be immediately broken. So we already know that there were no time-travelling attendees.

[@IN-pr3lw]

Not really because he may be a man of his word.

[@Desrtfox71]

@@IN-pr3lw Sure. Perhaps the most important scientific discovery of all time (pun intended) would be kept confidential based on him being a man of his word and a KZbin video. Nope.

[@IN-pr3lw]

@@Desrtfox71 I'm just saying, its not like thats never happened before and its not ruled out as a possibility. Just unlikely

[@AMan-xz7tx]

I think time travel might be entirely via the traveler's perspective, we don't see any time travelers because you would have to exist in a timeline where someone has entered the past, leaving our timeline unchanged

[@NetAndyCz]

Of course time travel is possible, I have been travelling into the future for decades now:) Btw, you say 'free will" can you provide us any evidence that free will exists even without time travel? PS: My favourite time travelling paradox is when the time travel happens only because it did happen. Like if the ball coming from the white hole knocks its former version into the black hole to do that in the future, even though it would have missed the black hole if it did not time travel.

[@Arick_jr]

It might stop the loop, or keep it going

[@Average-Cacodemon-Enjoyer]

Certified almost exactly what my dad said moment

[@lasskinn474]

I held couple of parties where some of the visitors traveled magically to next morning.

[@markmuller7962]

I'd say the common conception of free will doesn't exist, it's more likely a typical "paradox" of physics were free will exist but space and time are already out there so it simultaneously exist and doesn't exist. The problem is probably the human concept of free will that only takes into account one direction of time and 3 dimensions of space, aka: Naked Monkey brain

[@MrT------5743]

@@markmuller7962 Since time and space are interconnected in SpaceTime, traveling in time would also require you to travel in space too. If you could travel to yesterday morning but in the exact place you are now, You would be out in the middle of outer space because you and the earth, sun, solar system etc all moved since yesterday.

[@Jakewheather]

Jah! That party was changers my guy. It was dunked to see the city. The cable car up the that hospital thing, the bridge was prax too. Your invite was a welcome sight. I hopped that the translator app works better than it did while I was there. Glad to teach you some stuff about the future too! My scan of the city will really boosted my report on the past. Anyways, thanks again for the invite, hope I didn’t share too much.

[@BeyondPhotography]

Such a great video! Thank you! Here's what I reckon AFTER watching this video: The Grandfather Paradox can never be fulfilled because no matter how many times we travel back in time to kill our grandfathers we will always fail because of one thing: WE WILL ALWAYS FORGET to kill him every single time! Human's forgetfulness has always been intriguing and we can ONLY FORGET THE PAST, and NEVER FORGET the FUTURE (or remember it, bear with me). My reckoning; we have always been traveling to the Future and the Past everyday, but we just never remember, especially future Travels. Kinda like we dream every night, but how do we not remember? Simple: WE FORGET. And it is our forgetfulness that fulfils this Paradox. - Andrew Boey

[@Metal-Josh]

Sounds to me, theres more of a belief in time travel over perpetual motion?! Time travel is fun to think about, movies like back to the future, the terminator, even the time traveller’s wife and even the time machine itself. All have different ideas on how’d it work. Wether it be you can’t change time, you can drastically change time, or your “Fate is set” kinda ideas. But to me, if perpetual motion is impossible, than time travel is too

[@GigsTaggart]

Into the future is possible though. Just accelerate a lot.

[@Poldovico]

@@GigsTaggart That's not really time travel, though. You're just making yourself very slow.

[@humanistwriting5477]

So. Here's the issue.. Time travel IS possible. Not just in theory. The principles behind it are sound and resonate through our lives and "advanced" technologies like satellites have to be mindful about traveling through the dimension of time at a diffrent rate then here on earth. That is to say, we are always time traveling. But traveling backwards requires immense energy that would either consume the entire universe Or would require negative energy and mass. Now there is evidence that negative mass can be created but it hasn't been done yet and Frankly Who would use it to create a paradox? Maybe they have created a paradox and it destroyed the world and universe. And some evidence that the most you can do is travel instantly by traveling backwards in time as you move away from your source. And that's also pretty darn cool.

[@rutujdhongade374]

Technically we all are time traveling right now but we can't percive it because we are traveling at almost same speed and it is possible to travel in time but it just takes too much energy. Lastly if time travel is possible perpetual motion is possible too.

[@miniknights]

Perpetual motion, and time travel are two unrelated and different topics of physics.

[@nolancozzi5395]

Love watching your long form videos, they are so informative and interesting thank you so much for posting

[@I.____.....__...__]

5:10 That's a specious analogy. The laws of physics don't remove your free-will to fly, you can still want to, it just stops you from physically accomplishing it. You can't say the same for the grandfather-paradox; you just said it would make it so that you wouldn't want to eliminate your grandfather. If you change it so that you still do, but are physically restrained from doing so, it would become a sci-fi comedy movie where the gun misfires and the bullets are duds and there's a net outside the window you push him out of and mattress-truck passing by the bridge at the right time and so on… 5:47 The problem with the "new mass in the universe" _isn't_ a problem because that exact same amount of mass has been removed from the universe in the future, so it's still balanced. Remember time is supposed to be the fourth dimension of the single concept of spacetime, so spacetime as a whole remains balanced since there is no "extra" mass in it, it's just that some of the mass has moved from one location in time to another, just like how it can move from one location in space to another without violating conservation-of-mass. 6:33 Except that the mass in the universe didn't "come out of nothing" at the big-bang, it was all already there, it was just crammed into a tiny spot. Then when it blew up, it exploded and destroyed the mass and turned it all into energy, which eventually coalesced back into mass.

[@Sfaegbe]

For your for first arguement, free will of a human is only connected with the human, not time. You can’t be physically unable to kill your grandfather if you want to no matter what time it is. Say you were trying to attack him but according to your theory, you can’t so what happens? Does your body become limp or gets a mind of its own? All your other points are kinda right though.

[@rafetizer]

There's the possibility that something else prevents his death, even if you attempt it. You could shoot him non-lethally. He could be found and patched up. Someone else could stumble upon you. Of course, this is all just fun conjecture anyway.

[@ThisCanBePronounced]

Agree with your 2nd and 3rd point, but if we're going to dubiously speculate about restricting forces, then I think you need to bridge your 2nd explanation into the 1st to settle on an idea - especially since a big problem with all of these discussion is 1) the definition of "changing" the past/future (isn't one's presence already a change?) and 2) that only one scenario can exist. It could be that you go back in time and don't kill him so you remain in a self-consistent flow, or you do, causing the paradox, which means you're in a new timeline. If we're sticking to the idea that one scenario is possible, then you wouldn't kill your grandfather or do anything else to change the future because otherwise you wouldn't be able to time-travel; it's like trying to move into and back out of an area but you've already placed a wall in the way - the will or openness to murder. Trying to create such a change IS like adding new mass from nowhere. But again, to me this is all imaginative speculation by assuming only one scenario is possible. If you intend or are open to murder our grandfather, the moment you make the trip you've gone into a new timeline. Just some thoughts because.... maybe I'm saying all this because I'm not fully agreeing with that depiction of self-consistency. Or I don't understand self-consistency, lol. I don't see it. The energy and momentum transfer don't make sense imo.

[@Thingsandcosas]

Great party man, thanks for the invite.

[@MathAdam]

The party was a hoot! Thanks for the invite!

[@INVALID1273]

If time travellers were to show up due to this video, it would also mean that the future would be predetermined in the fact that the time travellers have received the video, which would mean that there is still a fixed amount of ways that that would have happened, making it possible to theoretically calculate the future up to the point of the last time traveller seeing this video.

[@the_inquisitive_inquisitor]

The most likely way we will discover time-travelers is "frozen, floating in deep space" If you go back in time, the Earth will eventually get to the spot you left from If you go forward in time the Solar System will have been traveling away from your position at 200 kilometers per second for whatever period of time you traveled through

[@SybilantSquid]

@@the_inquisitive_inquisitor Any time machine by nature is also capable of traveling through space. Any society advanced enough to build time machines is also capable of understanding the motions of planets, stars, and galaxies and can adjust their trajectories through time and space accordingly. TLDR: Time Travellers that know what they are doing will end up where they want to be.

[@the_inquisitive_inquisitor]

@@SybilantSquid Nobody gets it right on the first try. You would never know the time travelers were there in the first place if they were good at their job. If we find you, it's because something went wrong.

[@ShaneHathaway]

We should be thinking in terms of baby steps: can I send 1 bit of information a few nanoseconds into the past? Once I can do that, can I extend the idea to send more bits for more time? Of course, if anyone has already figured out how to do that, they probably wouldn't/shouldn't share how to do it. Too powerful!

[@JNJNRobin1337]

instant data transmission

[@95rav]

It is difficult to ensure anonymity when there are passing pedestrians, cars, etc - any of those bypassers could have been checking out who else had turned up before they showed themselves. Satellites and CCTV could also be spying on the party, scaring off potential party goers.

[@bollyfan1330]

Quick question, Do you really think that someone from 1000 years in the future, with time travel technology would find it difficult to attend the event without evading detection by satellites or other such primitive technologies in use today.

[@95rav]

@@bollyfan1330 yes and no. Their physics has to work the same as ours. IF they 'come back' to our time as observers only - ie, they are basically watching us as a nature documentary on a TV or in VR via a 'time travelling camera' as such - then maybe they would go undetected. But I doubt it. IF they turned up in person, they would definitely be detected. At least if they were in any populated place. You may argue they were invisible, but that is impossible, and if it were possible, they would not be able to see anything anyway. So no point in coming back. If something is invisible, light either passes through, or around a thing. Including that things eyes. And it would need to be invisible at all frequencies: normal light, infra red, radio etc. Ie, it couldn't communicate in any way, or give off any signal at all. Or be bumped into by anything. This does not even consider the huge amount of mass or energy suddenly appearing out of nowhere in our space time, a clear violation of the conservation of energy. On top of any of that, time travel in ANY direction (apart from our current t one second per second rate) is lethal for any reasonable period of travel.

[@DDProCo]

6:30 In the TV Show Fringe, the time-travel device is discovered and dug up and later used to travel to prehistoric times and is buried where it was discovered. No one made the device and It almost exists outside of time in that its existence within itself has no beginning or end. But to us, It only existed from Dino time to 2012.

[@mrivera3046]

If time travel were real someone would’ve gone back in time and saved the world from slowly rotting. Our resources is limited and we take it for granted. Fuel won’t last for ever.

[@mrivera3046]

Light is emitted elsewhere and escaping the solar system. We’re slowly losing energy we can’t recover.

[@mrivera3046]

If there were a time traveler they wouldn’t disturb the past that can lead to them not existing as well as preventing them from coming up with a time machine.

[@mrivera3046]

Humanity will end when the sun dies but life will develop once a new star is born.

[@HypeRatt]

As explained in the X Men franchise, if you affect the past it will create small ripples in time but everything will go back to what it was set to be and like water everything will flow back to it’s original order but if you make a bug enough ripple or a big enough impact on the past then you can affect the future. Let’s say somebody walks along a footpath and buys a coffee then spills it and then keeps walking. You nudge them forward a bit when they are walking to the coffee shop, but they still do the same thing, the ripple fades out. But if you knock them over and they hurt themselves like making a bug wave, they might not buy the coffee and go to hospital affecting the past. So there still is free will, although the smallest of things won’t make a difference until you hit the peak point and then you can affect the past. When you travel back to the future however, that to is extremely dangerous since you don’t know what happens the and you might travel into a wall. So location is key, remember to never travel on a plane since once you travel back, you will fall from the sky and die. Maybe do it somewhere where it is outside away from everything. Because one change may be the difference between life and death.

[@baggelissonic]

"As explained in the X men franchise" Lmao

[@HypeRatt]

@@baggelissonic it was. In Days Of The Future Past. I forgot which one it was so I said the franchise, but honestly it's pretty interesting.

[@dartplayer170]

Another point. Since space and time are relative to the observer, who's reference frame are we traveling backwards in time with?

[@dewaldsteyn1306]

Idc bc i dont believe in time travel. Like are the universe having memorys of the past where we can travel too? Nah man albert einsten was a lair.

[@spacepirateivynova]

Time travel (at least to a point in the past) is, from many years of pondering this and working out many, many (so many...) models, fundamentally impossible. The problem came down from what ended up being an incredibly simple concept. The question came about: does the 'past' exist as a physical thing? The answer I come back to time and time again is 'no', although the evidence of the past (memory, cause and effect, etc. etc.) is absolute. Traveling to the future, of course, is simple. You could just wait, or your could use relativity to your advantage through time dilation. But the past? We are talking about white/black hole travel, the best that could possible be happening is parallel universe travel where in a parallel reality, time is moving at a different rate, or is at different points in history. As far as I can tell, the notion we have of time is just an illusion caused by cause and effect. It just happens to be a VERY useful illusion... =^.^=

[@eternalflame84]

I couldn't have said it better myself. Time is only a concept, an ideea, it doesn't actualy exists, we're only keeping track of things for our advantage or knowledge 👍

[@Gowther31]

Many things in physics and general relativity are just concepts that don't technically exist in a physical sense, parallels can also be drawn in mathematics and computer science, but they remain useful as models that do well to explain our most current understanding of how reality works, but as there is a lot of unknowns, we currently are striving to update these models, create new ones and revise them in order to reduce inconsistencies with our observations and to uncover more unknowns of the universe, this process is possible because of the scientific method. To say time does not exist simply because it is just a model or concept is absurd, since you have to consider what does existing even tangibly mean contextually? One could argue the past must exist as the concept of a future necessitates it, that is, if there is a future, than there most be moments that precede that future otherwise the concept of a future does not make sense, if there is moments before that future, and they exist for that reason, then in relation to that future, these moments are considered past. The current moment you read this is a future, and the moments before you read it is what that future is relative to. To assume that, based on our current understandings that time travel is impossible, is mightily presumptious of us when we truly know so little about the universe, that claiming impossibilities based on our limited understanding is quite foolish when there is so much room for possibility and discovery. What we are inherently bad at, is simply saying " we don't know" and jump to "this conflicts or falls outside of what I do know, so it is impossible or does not exist". The danger is, these negatives of "impossible" or "does not exist" should contain the same rigor and scrutiny, it should demand the same level of evidence as any so called standardly accepted truths, which is what is being ignored here.

[@davestorm6718]

There's really no such thing as time, as an entity in and of itself outside mathematics - time is a function for the rate of change, it isn't tangible in reality. The past is reflection (storage = only exists in recordings), the present, demarcation (infinitely thin = 0D = non-existent), and the future is projection (a guess, non-existent until point of demarcation if you image a plane of "presentness" moving forwards). All 3 imaginings are basically nothing at all. If there were such a thing as space-time in reality, nothing could move. dt/dt = nonsense. Special Relativity is grossly misunderstood and the assumption that a variance of the rate of change is related to "time" proper (the human invention) is completely incorrect. Time doesn't slow down nor speed up. It doesn't go backwards nor forwards. Mathematically, it is a scalar quantity, not a vector. The speed of light is constant, and timers/clocks will change as approach to/from relativistic velocities and gravity wells, but this is due to counter reactive forces by space itself (which is described as "going to infinite mass") - time has nothing to do with it - it's really another type of "friction". Experiments "proving" frame dragging are really proving that space is tangible & reactive (like an aether). Just my take on this.

[@Gowther31]

@@davestorm6718 There is some inconsistencies there I'd like to point out in your reasoning. Time is not a function for the rate of change, rate of change simply describes how an output quantity changes in relation to an input quantity. dy/dx. Time need not be involved but is typically useful for us. Note that the function is in the numerator such that f(x2)-f(x1) / x2-x1 . Usually time is not a function of something, but something is a function of time. dt/dt doesn't make sense because basically that is just saying time is a function of time, which doesn't really say anything for either side of the argument so no need to dwell. The statement nothing could move in space-time is somewhat incorrect, its simply that nothing can move in space, without also moving in time, which is not an issue as everything is constantly moving forward in time. You stated that it isn't tangible in reality, but so are most laws, axioms and fundamentals we observe in reality, I wouldn't say space or the laws of thermodynamics are tangible, but they seem to exist or at the very least influence how matter and energy behave. We can not directly observe black holes, they are in a sense, intangible to us as we can not use our senses to describe or detect them, but what we can observe is what the object influences around it, which is information we can use to make inferences about this object.

[@MrParcho]

I agree with you. The past does not exit, only a record of the past exists. So there is nothing to go back to. If we conduct a mind experiment and say the past exists we have the problem that the universe is a moving target. The earth orbits the sun but it's path is not uniform it is perturbed by all of the planets around it. The sun rotates about our galactic core dragging the solar system along with it. The galaxy is moving towards the great attractor, and who knows where that is going. So good luck on calculating where the earth was at any time in the past or any time in the future for that matter. Your calculations would need to be mm perfect. Would hate to be 10 Meters out above or below the surface.

[@SybilantSquid]

Very polite of you to respect time traveller confidentiality.

[@AD-ju7ct]

I saw this video 9 months ago. I am watching it again now, so I can confirm time travel is real.

[@jimmypalavi]

You could have asked a time traveler to leave a unique mark at the bridge without remaining to meet you. The presence of the mark would have been good enough.

[@PPpeepi]

Exactly This should be done

[@mlgnoscoper6639]

AMONG US 1:39

[@Sfaegbe]

_ ( 0) / /

[@sansfrisky]

Ha

[@bigbunstudios7494]

😳

[@Seamens]

that game really changes the meaning of that word

[@AmogusPhage]

It’s more than just a word

[@GodBidoof]

Considering that the closer you go to the speed of light, the more time slows down, if you were to somehow break all known laws of physics and go faster than light, what would happen

[@mohammedfaraazhasankhan1627]

Except that you can't. You can NEVER EVER EVER go faster than light.

[@kaizakiarata9313]

Sit in a train travelling at light speed, somehow u overcome the known phyiscal barriers and then according to known phyiscs time slows down then when u come out of that train after a week it will be 100 years passed on earth actually

[@Qraze69]

just punch a hole, its easier. space is curved.

[@META313.]

@@mohammedfaraazhasankhan1627 wow how did u manage to become such a genius at utilizing textual information? "If you were to somehow" - is the key in that comment, implies if it happened - hypothetically. Simple logic. And science is full of such questions, if it wasnt for them, scientists wouldnt be able to determine if things are possible or not.

[@iCarus_A]

@@META313. science isn't full of questions about whether you can go FTL... that's a weird substitution. To answer the OP's question, since going superluminal requires infinite energy or negative mass, a few things could happen: since exerting infinite energy requires you to violate conservation of energy, you'd break a fundamental law of the universe and the law of physics itself might change. Or maybe you are somehow lighter than a photon, ie, having negative mass. This is the "exotic matters" theory in creating FTL engines. In this case it'd mean that, again, the laws of physics and universe isn't as we know it. Also, time flow should never change for you the observer, so time should remain constant for you.

[@TheCrankSpiderNinja]

If everyone was constantly sharing this with their friends, then the video would be constantly changing everytime you watch it

[@Wølf_the_conceit]

The umbrella academy season 3 shows the grandfather paradox in a great way

[@Tylerpierre99]

If a time traveller _did_ come back, would that timeline verr off into a new tangent universe and leave our universe all alone as it was? If that was the case, maybe hundreds showed up and all partied in a tangent universe...well, until the time police came and plugged that tangent universe and decompiled it to protect the multiverse...but if they did that then time travellers wouldn't have gone to the party and the time police wouldn't have needed to-and _oh dear i seem to have cross eyed_

[@Hhhh22222-w]

There wouldn't be an alternative timeline, since time itself isn't real but it's just based on observation and is the result of actions by matter, for multiverse to exist it would mean that there is order and consistency in the universe to prevent the other universes from interacting and destroying each other, as dictated by the only universal law we know that is consistent, so far this isn't true

[@j3ckl3r]

going back in time would mean reversing the movement of every single point/particle in the universe, which could be possible i suppose if everything is stuck in some sort of weird fabric of time, like reverse mixing, but things probably wouldn't be quite the same. kind of like deja vu in The Matrix. the sun, planets, and galaxies would all have to move backwards. you can't just travel back in time. you have to travel back in space as well. if you go back in time nothing will be in the same position. our solar system is travelling at 200 km/s. that's 720,000 km in an hour. if you went back in time an hour and your position doesn't change then you'd be left floating in space waving goodbye to a spec of Earth. the only way to see the past would be to go back to where things were to see the light that was emitted from then, but by the time you get back to it it will already be gone. the only way to keep it there would be to freeze time so the light can't move. you wouldn't be able to change anything, just observe. maybe if you can make a time = 0 bubble around you then the planet won't take off without you, or maybe it will but you will just be stuck floating there forever to observe the universe as it ages around you. you'd be immortal, but you might not be able to do anything but watch, or maybe you could walk around with it and everything else would just be frozen in time. is there a physics equation that contains time and energy? it would probably say you would need an infinite amount of energy to make time = 0, I assume. I'm pretty sure the universe is a tesseract. i think that would make time infinite. chicken or the egg. what was first time or space? is time infinite or is there a 0? What time is it really? How can infinite exist? Wouldn't that mean energy is infinite too? There could have been another universe before the big bang, but everything collected back together and it just keeps repeating that cycle. Bang. Expansion. Expansion slows. Expansion stops. Everything recompresses from gravity. Singularity formed. Instability. Bang. Conservation of energy? Does the singularity just slowly get smaller every cycle? Is there a critical mass for the Big Bang? Maybe there were clumps large enough left from the initial Big Bang to have Smaller Bangs inside our existing universe? Universe in a universe? Is that how the 4th dimension was created?

[@NOTMEVR]

That is the most confusing yet educational comment ever

[@SocratesAlexander]

You have to seal it in epoxy resin so that it lasts a long time. Otherwise, the paper would decompose after a few years, which is just a little point in an infinite duration of time.

[@Zapharus]

The invitation is the video itself, which is why he asked for as many people to share it. Digital media has the potential of surviving humanity if saved onto long lasting medium.

[@SocratesAlexander]

@@Zapharus All the digital media, including text data, will be gone in a hundred years, friend.

[@JoshRhoton]

So there's no books or notes or any paper that's over a few years old?!? Lmfao 😆

[@SocratesAlexander]

@@JoshRhoton Find your shopping receipt from the last month and then laugh again, brainer.

[@BrianSu]

@@SocratesAlexander not really because data don’t just live on the same media. They get copied to new ones as hardware is upgraded. Even if it stays on the same media, there are cheap DVD or Blu-Ray discs that can last for thousands of years

[@syedhunain_7997]

It was a nice party!!😄😄 Thanx for inviting me

[@sw3aterCS_]

I didn’t know you lived in Portland! That’s so cool!

[@Poshlly]

Let’s say you could move faster than light, and you had a really powerful telescope. couldn’t you technically travel into the past? If you could jump 1000 light years away, and you had a ridiculous telescope you could see the earth 1000 years ago… right? I know it’s not real “time travel” but in a way

[@Herbie11]

I thought about this too.

[@nothingparticularly2493]

@@Faizan29353 I still don't understand. If I'm not wrong, are you saying that we need light to see in the past if we moving faster than light? For what i know, simply moving fast makes you the one to arrive first and when you stop you just waiting the light to reach you. Then what's the connection between light and moving faster than light?

[@nothingparticularly2493]

@@Faizan29353 I thought if you move faster than light then you just stop the time people around you. And when you stop, time goes back to normal and everything around you. I don't understand why some people think if you move faster than light you could go back to the past. Isn't it the opposite? That you just keep moving forward and you just stop the time when you move faster than light not backward?

[@matthewtalbot-paine7977]

Here's the problem with an invite to time travellers. Why, in all of time that they can visit would they come and spend it with you or Stephen Hawkins? If time travellers existed and they wanted people to know about time travel in the past guess what. They'd have told someone already. The only possible reason for us not knowing about time travel if there are time traveller is that they don't want people to know.

[@alansmods1775]

Yeah true, but I think no one would believe time travellers atleast anyone who exists before 1700s

[@saurk7]

Sir are you a time traveler?

[@matthewtalbot-paine7977]

@@alansmods1775 They don't have to believe them for there to be records of them. I mean if some guy showed up in the year 1000 and started making amazing things happen I think we'd have a book about that sort of thing at least.

[@alansmods1775]

@@matthewtalbot-paine7977 well they might be considered as some kind of magicians instead of a time traveller

[@KimTiger777]

There is also the possibility that the time traveler can't physically change things but can observe the past, this would solve the grandfather paradox. Kind of like read only time information.

[@sarahskileth6925]

Time travel is the one thing i think should remain in science fiction.

[@Karmah04]

Only way to find out what happened at the party is to time travel and see for yourself, guess I might go

[@Jsmitty90]

I had a great time at the party. Thanks for the invite

[@davehugstrees]

Interesting experiment. If you meet a time traveler, please ask how they were able to travel so far through space to meet you, since the Earth is flying through space at 490,000 miles per hour.

[@darpan2161]

i never thought about that

[@TinFoilCrotchBoy]

LoL, moving through time isn't impressive enough, you gotta know how they moved through space? We already move through space, some one who also moves through time would have theoretically near perfected moving through space.

[@manuelrumpal8381]

It gets better. If you travel in time the way it gets usually depicted, disappear and suddenly reappear, meaning something different than time dilation, what rule is there as to where you reapear? Say a time traveller travels from Earth and ends up on Earth, that would mean some kind of relation to it that propagated through time. There is however no reason for him to end up anywhere else either, as there are no coordinates in space, no center and no end. Now I'm even more confused by what I just wrote.

[@TinFoilCrotchBoy]

@@manuelrumpal8381 So I know movies haven't quite depicted it accurately, but in real life, theoretically, a time traveler would need to calculate the correct point in time and space of the Earth, and maybe several other things we don't even know about yet, to successfully time travel.

[@davidyoder5890]

This is so true and should be the top comment. It's fun to think about time travel, but without some kind of universal (literally) positionality, it would be near impossible to jump through time and land at a precise time AND location. Earth is spinning around the sun, which is spinning around the galaxy, which is spinning around some other object, and so on. If a jump through time can be achieved, but the position is wrong, you could end up at the bottom of the ocean, in the center of Jupiter, 50 lightyears away from any object and suspended in the vacuum of space...you get the idea. Ironically, the only practical application for time travel would be in a closed non-moving system for which universal location is comprehensible - much like some of the flat earth models that omit the concept of outer space entirely.

[@kymcainday6677]

I have a question. If you are a time traveler, is it worth it to time travel only for a party? Would someone mess with the timeline for a party?

[@whyme7052]

the worser part is getting to Orgeon

[@NevergiveUP-yw9mr]

Time travel may be possible by moving fast that leads to time dilation and we can slow the time but time traveling in aspects of living in past time is not yet possible

[@ZNotFound]

If you travel close to the speed of light, time slows down for you. In theory, If you are traveling at the speed of light, time would stop for you. So maybe if you travel faster than the speed of light time would reverse. If that is possible it would take infinite energy though. lol

[@NevergiveUP-yw9mr]

@@ZNotFound in theory of relativity it is said that if you travel with any speed then there would be impact of time dilation but ya it is said that while travelling with speed of light would slow time to 0 and its relativistic mass goes to ∞(infinite) but I doesn't specifies to travel with speed of light example:- ISS(international space station) feels a time dilation of some mille or microseconds in a year LoL 😂

[@cyndicorinne]

I like your videos with catchy titles combined with real science that leaves me feeling as if I learned something.

[@Nelster]

'The ball has free will' uh oh, I hope my tennis balls don't decide to murder me at night due to all the abuse I've subjected them to.

[@SobaYatai]

After been watching Action Lab videos for a while If this guy managed to invent time travel I wouldn’t even be surprised anymore lol

[@Don-tCareAboutNameStuff]

Imagine how good a deal square space gets when its sponsorship spreads across the timeline

[@soplokill]

The crazy thing is that if someone actually showed up BEFORE he even had make the invitation, let alone the video, that means he had, for a certain period of time, the absolute certainty that he would not die until he himself make the invitations AND publish the video, that's some spooky liberty he must had felt, I personally would go crazy with that amount of liberty based on the certainty that I would not die, I would definitely go wild, mad respect to him for staying sane during this experiment, I would never coped with this.

[@tomverplancke5379]

Thanks for the party! It was (or is it will be) a blast

[@barackobama780]

Party was nice! Thanks for inviting me back to 2022.

[@morten.hekkvang]

Feels pretty logical that at the very moment any time travelers would show up, reality would have immidiately forked into a new reality. So even if you'd invite someone to your party, the you of this reality will never truly know if it worked or not.

[@necropresence2842]

That's what I believe as well.

[@randallcarroll2151]

One theory is that if time travel was ever created, then they could only travel forward in time after the machine was created. Or could only travel back to the moment it was created but not before that time.

[@harshjain4256]

Grandfather paradox is still applied even if you can only go till the moment time machine is created

[@Spappl3]

that makes sense cuz how would i go back to times where that piece of matter and mass didn't exist

[@0pp841]

People who ask if time travel is possible forget that we're always traveling through time. As we learn about it, there is the possibility that we find out that it only works the one way.

[@HappyFunJay]

My favorite depiction of time travel is still from the movie Primer. It seems to me like the most plausible and believable version of time travel. You can’t just magically teleport to any location at any point in history; you have to start the machine at the time in the past when you want to arrive and then keep it running intact the entire duration until the point in the future when you want to depart. So there’s no worrying about materializing inside a building, etc.

[@lsdlsdk4845]

Before going for TimeTravel event, the reality lies in the mystical difference between Birth and Death event, these two events are physically existing, but Time Travel is just a theory, a thought generated on physical theories.

[@jeffmac9642]

No because you are implying that time exists on earth as a destination. The earth 🌎 moves through space at 60,000 mph and has never occupied the same space twice. Going back to 1985 you would have to go where the earth WAS billions of miles somewhere else and the earth 🌎 isn't there anymore its here.

[@callularashieka2248]

??

[@It-b-Blair]

That assumes time and matter are not intertwined. Perhaps the very act of time travel moves you through space as well? Given the theory is premised on “space-time” being a single dimension.

[@matthewtalbot-paine7977]

That is a really good point unless you travel backwards not instantly like you would in a DeLorean but rather like a rewind like the opposite of what is happening to you now (you are moving to the future at 1 second per second) but faster. Then as you move through time earths gravity would keep you in place or something. I'd never heard your point before though and that blows like every time travel movie out of the water on that point alone.

[@jeffmac9642]

@@matthewtalbot-paine7977 Movies 🎬 are movies. The earth 🌎 is moving around the sun. The sun moves around the milky way. Our galaxy is moving away from a large explosion of some sort 13 billion years ago. How can the earth 🌎 occupy every point in space it ever occupied? Literally when vikings walked the earth , the planet was probably 100 billion miles away somewhere else. Their life force extinguished, their bones are buried and our blue marble hurtles onwards, and aimlessly through infinity

[@matthewtalbot-paine7977]

@@jeffmac9642 Yeah I didn't say that I was proposing you don't actually stay in the same spot in space but you move backward through time move through space as you would if you were just standing on the earth moving forward through time as you are right now but just faster than you are now.

[@dennissanjaya2796]

i am the 5th viewers

[@GatherYeRosebudsWhileYeMay]

This comment is great because if you had time travel you could go back in time where doing that was cool 😉

[@harshvardhanjha5423]

1st

[@sam-po7rx]

Nope

[@peterparker8763]

Yep

[@SlincLinc]

Yes

[@cosmojev]

Time travel in the past could theoretically be possible, since stuff in the past has already happened previously. However, it seems impossible to travel to the future, as we do not know what will happen in the coming years. We only know this information due to scientists and human activities that COULD cause stuff to happen in the future. If it were possible, we would visit an "alternate" future, meaning that we would see things that scientists marked down as "This could happen in the future". We will not actually know what will happen. I know this has nothing to do with the video, but i wanted to get my point across.

[@UltimateBargains]

You don't understand that time does not affect space, but it only affects matter relative to other matter (and to a very lesser extent energy). Time only moves forward, just like the other spatial dimensions. Movement is only forward in time and space, never backward. The movement can change velocity relative to other matter and never can go backward.

[@Hasnat1]

Imagine you make a party like this and time travellers come for real.

[@apoptosisduellinks109]

One solution to the 'E=MC2 problem' as mentioned towards the end of this video, is that in the original time line Einstein was the inventor, and then in all the subsequent time lines, the origin of the theory becomes lost as it gets caught in a loop between you and whoever you gave the theory to in the past. There, there is no appearing out of nowhere or lack of origin. The origin is indeed untracable and 'lost in time', but the origin used to exist (in a different time line). I don't know whether this would help solve the 'Big Bang problem'. Maybe the universe originated from the future?

[@squirrelthegamer8483]

Imagine this guy has solid proof of time travel and is just like “I could share this discovery with the rest of humanity but nah.”

[@thomasodonnell2191]

"Are you here for the party?" "Sorry bro... we don't swing that way...."

[@nokichou8059]

You can share the video of that meeting without any worry, because as you said, even if there were time travelers, they would not be able to change what already happened during that meeting. In fact, you don't really need to send out any invitation, because if time traveling were possible, there is no reason not to do it but rather wait until someone invites them to do so. Think about it, if you had a private jet that could travel around the world and not worry about the cost, you would not wait in your home not using that jet at all until someone sends you an invitation first. On the other hand, if you can travel around the world (like buying an airplane ticket) but the cost is huge, you still would not just travel to a stranger only because that stranger sends you an invitation for no reason or benefit for you. So we all know that either A) time traveling is not possible at all, or B) time traveling costs so much that it is virtually not feasible or economical to do so (e.g. requires the energy of an entire galaxy or something similar).

[@JacquesMare]

Videos featuring scientists talking about the possibility to send their balls through a wormhole, are my favourite type of KZbin video......

[@Aaron.Reichert]

This dude is out here making paralel universes, and I can barely make dinner.

[@Dalorian1]

@2:00 you give any time traveler who reads this, absolutely no incentive to do so. They only risk exposure. If I was a time traveler, I wouldn't give any signs to prove the existence of time travel. Why would I? It would only mess with the universe.

[@cipherxen2]

"I built a time machine to go to Stephen Hawking's party" "You'll not able to come back" "Pass"

[@undergroundo]

Here's how to improve that experiment: 1. Go to a secret location, and hide a safe box. Inside a timer that will destroy an object after 24 hours. 2. Go back home. 3. Wait 24 hours. 4. Send out the invitation, with the location and the combination to the lock, asking time-travelers to STOP the timer and save the object. 5. Spend one year making the invitation famous. Make sure it becomes "a thing". 6. Go back to the secret location and check if the object was saved.