Bingo!

@@portalopener7759 it will take me time to read and understand what u wrote, but hey! I am just impressed!

@@Yashraj13 its gibberish from a looney

@@fitnesspoint2006 probably a junkie

@@Yashraj13 I wouldn't bother, it's all technobabble

nothing like a good ole self arse kicking, eh?

or some money when needed it the most

Unless you remember already meeting your older self in the past, it's not going to happen in the future.

@@wasd____ Not true according to the many worlds interpretation.

@@gwentchamp8720 If many worlds is true, then it would be someone else you're meeting in the past, not yourself. It becomes a moot point then because it wouldn't change *you.*

lol I would eat cake & then go back in time & still have my cake. Would we get stuck in a time loop though? I think I might.

It would be like the anime “Harumi suzumia ”

There is a chance......

Time travel, in any direction, becomes *_trivial_* once you realize time *_and spatial motion_* are inextricably linked: *v=tUrkmu8Mpas* Then, traveling in time is simply a matter of moving things around. Move the waves & particles your body is made of back to where they were a minute ago, and presto, you've made yourself one minute younger. 😌

Don't we all!

Man that must be a smart 5 year old.

@@JJs_playground The reason it makes no sense, is that it makes no sense.

Brian green literally does that from age 5-experts

Well, maybe HE came back in time ;-)

What’s with the wardrobe though? Like, seriously, dude needs to be on an episode of, “What Not To Wear.” 😂

Must have been a bad hair day?

It sometimes literally disappoints me to no end how little likes and views his amazing detailed videos get, while stupid memes and like begging videos get millions of likes. Poor Arvin, just 5K likes for such an amazing video.

Very nice pfp bro

@@alphagt62 IIRC he said in an earlier video that he got some kind of surgery and was covering up the bandage with the beanie. As of his newest vid looks like it's all healed up!

There is no chance

No point of watching this if you can travel

Look at me! Back at you! You are in the future now!

@@UnchartedWorlds I will make one comment after 15min so before that time tell me what m I gonna comment

You won't notice any difference since sequencially you watched it 😂 You can't skip time

Deep

🥺❤️❤️

Time travel, in any direction, becomes *_trivial_* once you realize time is not a separate dimension but inextricably linked to *_spatial motion:_* *v=tUrkmu8Mpas* Then, traveling in time is simply a matter of moving things around. Move the waves & particles your body is made of back to where they were a minute ago, and presto, you've made yourself one minute younger. 😌

you´re right Bob Dylan

@@miguelo65 Good for you Miguelo. I was beginning to wonder where Bob's fans were on this channel.

@@goasthmago6354 Your objection misses my argument. No one's said it would be easy, just _trivial._ There are many trivial things that are incredibly hard to do -- like manually counting every single grain of sand on a beach, for instance. Also, if making yourself younger by 1 minute is too difficult for you, why not start with a simpler task? E.g., try moving the arms of your kitchen clock back by 1 hour. In doing so, you *_will_* actually move the arms back in time. Not completely, since you probably cannot move back every single particle & wave given off by the clock's arms since, but hey: only bite off what you can chew, right? 😉 Of course, the most common objection to this is that moving back the arms of a clock not actually move back time but at most create "the illusion" of moving back in time... *but that isn't true!* Because if you _did_ manage to move back ALL the clock arms' particles etc., the result would be indistinguishable from the result of actually going back in time -- it's a perfect symmetry of time and motion. Two entities/objects indistinguishable in every respect are identical. Thus, the simple act of moving things back into a previous position is identical to moving those things back in time. This does not just go for the sum of ALL the clock arms' particles but also for those you do manage to move back. EVERY spatial motion is a motion in 3D time (see video: *v=tUrkmu8Mpas* ). 😌

@@goasthmago6354 You're just confirming what I'm saying: the perceived direction of time is simply a result of our way of counting it. It's like counting how many miles your car has made: you always only get a *_positive value..._* and yet, when it comes to your car's spatial motion, you do not conclude that it must have been driving all those miles in one direction only, right? No, it's been driving forward, backward, and all around. So why are you assuming the contrary when it comes to time? 😉

🔥

Unless it causes a recursion loop. Then If we can we can’t... Science is neat isn’t it?

What if time travel is invented but its range sucks so it takes a lot of "time" to go back. Like Tenet but instead of going backwards in real time, you go backwards much more slowly than forward. You keep pushing the invention of time travel back bit by bit all the way to the beginning. It would appear like a exponential increase in tech and knowledge into a technological singularity, much like what we see today. Our singularity might be time travel, not AI.

That depends on your idea of what a "time travel" is.

That would mean we’ve already came in contact with time travelers

Great point, spot on!

Excellent comment! 100% agree. Of course your statement isn't as entertaining as hypothesizing about going through a wormhole and coming out in a parallel universe through the 8th, 9th or 10th dimension - but I prefer to ponder about the universe we actually have, as opposed the the invented one that is often discussed by science fiction writers - oops I mean physicists. Since GPS technology has demonstrated that time does dilate in gravity and velocity - but doesn't dilate reciprocally for velocity as Einstein theorized, then we can assume that time (and its dilation) is a completely local effect where repeating fundamental behaviors are actually responsible for what we emergently perceive as time, with the slowing rate due to some interaction between the atomic systems and the gravity and/or velocity they are exposed to.

Thats a long and fancy way of saying "entropy" lol. I am pretty sure Arvin and all those fancy physicists know about the entropy.

@@keptins no it isn't. Entropy is a different thing entirely, I am not talking about the freedom of movement that atoms have with various energy le els.

@@angryscottishbiker5097 I hear you. I believe travelling back in time is possible as long it means travelling back in space. Also travelling in time is itself an outdated way of expressing an idea. I mean if there is a way to travel in time then there is no point in it. But still in an infinite universe anything is possible. Any thing.

So your brain is a white hole.

I tried that. The good news is that I could have escaped the gravity to rejoin civilization. The bad news is that my space suit melted and I became my own naked singularity.

this is an interesting idea, many things I can think of would arise as issues, but yes, I want to hear more about this idea...

Thanks a lot both of u for thinking about the idea

Well we could go even more in the past to the point when it didn't even exist

If you're inside the event horizon there is no going back. All forward light cones converge to the singularity, it's not a case of "go back until it's not a black hole" you can't go back once you cross the event horizon.

Yes, I should have made this clearer. Light cones can represent any particle or object, including you. It just represents all the future and past events that are causally connected to each other.

@@goasthmago6354 Mate that was beautiful. Above and beyond description. Which leads to a more serious question. As you understand this so precisely, do you believe in freewill? Afterall, observing any relative motion is equivalent to observing the past. And of course, the person you're observing also perceives yourself as their past due to the block time of photons surrounding both of you.

You true, if time is longer, the past is not far. We don't know where we will arrive in the past with Big natural black hole... Here is lying the problem, if you arrive at another place in the past or worse : the black hole birth (then you literally die in, too many gaz and radiations... Maybe a tiny circular singularity), who know ? It's better to get another way of transportation. ;)

lol that costume was perfection

That “costume” you speak of is a standard NASA timeflight chrononaut uniform.

Yea pretty cringe

Yes, that is possible. The equations seem to work, but like you said, real singularities may impose further barriers.

CTCs seem too cool to be true , but ,again ,people had the same attitude about black holes 60 years ago , so who knows? By the way , very good video , as usual.

except your position at the present moment in reference to time in relation to your position remains in a constant fixed present moment in time

@@tonygilbert73 oh with the tick mark I thought you were a verified UKpostsr with more than 100K subs or so

It kinda already is. Look at the sky, the light you recieve from stars escaped them thousands of years ago, so you basically see a visual snapshot of how they were at that time.

Photons do not have a rest mass. However, they do have energy. They do curve spacetime. Mass and energy curve spacetime.

@@ArvinAsh thank you. I would certainly be interested in a detail explanation, in the amazing format you use to create your videos. Why light has a speed, why can't it go faster, and finally, the effects of gravity on energy vs. mass. Again, thank you for your amazing videos.

​@@raulc. i think hes already done a couple on this. search arvin's back catalogue of videos. if not you can check out another great physics channel-the science asylum, which you should also be able to grasp. he also uses plenty of visual aids such as graphs. and you dont really need to know the math, theres plenty of conceptual and visual explanation to provide you with intuitive energy and mass are equivalent. you can think of rest mass as confined energy i.e. energy that has been trapped.or since the higgs field provides the rest mass of the fundamental particles that make up all fo hus humans-i.e. electrons and the up and down quarks-which all three make up protons and neutrons-the nuclei of atoms, you can think of electrons and quarks travelling through the higgs field and the field being like thick honey, with the particles struggling to travel through. thus the particles acquite inertia-a resistance to being moved. you and i have rest mass-which is a measure of our resistance to being moved. it is hard to accelerate objects with rest mass. by the time you get to near light speed the difficulty of accelerating the massive object further becomes infinitely difficult i.e. requires infinite energy, and so objects with rest mass/inertial mass cannot reach light speed. light speed is not just the max speed of light but the max speed that anything can travel through the medium of the spacetime continuum. formally this is described by two components-permittivity and permeability. this is-how well space as a medium can conduct electric fields and how well space can conduct magnetic fields. light i.e. visible light is just a tiny part of the electromagnetic wave spectrum. gamma rays, x rays, ultra-violet, visible light. infra red, radiowaves, microwaves. might have missed one out, but thats pretty much the whole spectrum. all are just different frequencies of electromagnetic waves also called radiation, which are composed of an oscilating electric field and an orthogonal oscilating magnetic field, the moving electric field creates the magnetic field, which creates another electric field and so on. so there is a max speed that the medium of space can conduct the electric and magnetic field components of EM waves through it. however more fundamentally it was discovered that gamma rays-the most energetic of EM waves, i.e you would die from exposure to them most certainly,travel exactly same speed as the least energetic of the EM waves-the radio and microwave end of the spectrum which we use in our daily lives e.g. internet, mobile phones, radios, microwave ovens. so the max speed through space has been reached and despite gamma rays having loads extra frequency/energy it doesnt make them go through space any faster. which is very counter intuitive. picture a sprinter going faster over two hundred metres yet not travelling any faster. hence there is a universal speed limit, denoted by the famous algebraic symbol of C, which is a fundamental constant i.e never changes. this C lays the foundation of special relativity where everyone experiences different durations of time and different spatial lengths in their respective reference frames, especially when their acceleration or strength of gravitional field they are in are substantially different relative to their neighbour. this is due to the phenomena of the relativity of simulaneity-one of the three-four key special relativity postulates. Many physicist refer to the constant C-the speed of light, it as the speed of causality. since the limit set by the medium of the space-time continuum plays a fundamental role in causality/events. if you were travelling at the speed of light, all of your movement would be along the space dimensions, and none in the time dimension, so your clock will have stopped. you cease to age, cease to experience time including no more change. photons of light experience no time, their internal clocks are frozen. only stuff with rest mass experiences time, since having rest mass means your angle of movement through the space-time medium has to be tilted at least partly along the time dimension axis. in fact for all of us humans, we move almost exclusively along the time like axis, and barely at all along the space like axis. thus most of us dont even leave this planet, are relatively motionless spatially and thus move through time very quickly and thus do not live very long -eighty-one hundred twenty years is a cosmic blink. we get a tiny time dilation affect from being in the gravity well of the earth.if the speed of light was infinite, a gamma ray burst from a supernovoe one hundred thousand light years away if pointed in the direction of earth would reach earth instantaneoulsy, and we would experience an extinction level event , of ninety five percent of all life going extinct or even worse like the other historic mass extinction events, the last of which happened some hundred million years ago with the big meteor wiping the dinosaurs out, =endong the reptile age, and allowing mammals and thus eventually primates to dominate the landmasses of earth. s o stuff takes durations of time to reach us and us to reach destinations determined by fundamental properties of the spacetime medium/continuum. the geometrical properties of the spacetime bubble we find ourselves in give rise to certain symmetries which initially existed as a ultrs ordered initial state at beginning of universe-like a perfect shape, but then with in particular changes in temperature and density, the symmetries broke , most in fractions of a second after the birth of our universe based on following the math back in time. this three spatial dimension, one time dimension arena is going to determine the allowed behaviours of particles and fields.based on the properties of itself-i.e. the vacuum states permitted to exist. anything that is massless not just light but also gluons which carry the strong nuclear force also travel at C too. just as arvin showed with the space-time diagram, the speeds end up being angles. so light speed is forty five degree angle, and space like speeds are angles beyond forty five degrees, thus they leave our light cone, have become causally disconnected to us, and could go back in time. as the velocities/speeds are angles, light speed in one sense can be said to be infinite, since no steeper angle is permitted geometrically. there is a speculative idea, an interpretation if you will of antimatter as being the backwards in time version of matter. because an electron which for us has negative charge if it did go faster than C/the speed of radiation, it would go backwards in time, and it would appear to us to switch to positive charge i.e. it would look like the antimatter positron. however, i may be wrong in this last point here, but i believe the positron would have negative energy, negative rest mass if it were really going backwards in time. whereas the positrons created in those big particle accelecators at CERN and fermilab and others. all have positive rest mass. so if you want to think of going faster than light, think of negative rest mass, negative energy. and a sort of mirror parallel universe where these faster than light negative rest mass particles and possibly whole big celestial structures would be. such a mirror universe has been proposed seriously. even searched for experimentally, such a mirror opposite side universe would be from our perspective have time running the opposite direction to our arrow of time. and would be located in our past i.e. going further and further away from us towards our past boundary e.g. the big bang. however if you were in that mirror universe, your time would appear to pass in a similar fashion to here. that is just a speculative but fun thought experiment im ending on. though its not ruled out.

@@shaunhumphreys6714 wow... That was a very detailed explanation. I have to be honest, I enjoyed reading it. Thank you.

@@raulc. ah, thanks mate. Im glad you got something from it. it's admittedly not as perfect a reply as i would have wished to write, as it's speed typed answer/s to your queries, and my mind wanders in an ill disciplined manner, which annoys me, but its generally correct at least. i hold reputation fpr being very detailed and also well known for being the worst at a concise comment!! stay curious. :)

He’s walking at normal speed. It’s just a yuge train a long way away.

I've heard it said that gravity is not a real force like magnetism, so negative gravity probably can't happen. I think it's just the effect of a variation in space time density in a local area that causes your feet to "travel" through time faster than your head.. So your feet pull your head. If that's true then to create negative gravity, you would first have to create negative space time, so you would already have the time machine. But I have no idea what I'm talking about 😁

@@jameshughes3014 no no your close if you take the relativity explanation of gravity your right

Since gravity is curvature of spacetime that would be a white hole, which is a possible solution to Einstein's GToR. But have not been observed in reality.

@@matthewcahill4475 huh, cool. Thanks , wasn't sure I understood it

Define "negative" gravity.

Hopefully you never find it. Causality is very cool. Madness is not.

Ether was an attempt at explaining electromagnetic force, Higgs is gravity. Ether was part of an earlier understanding of physics, which then adapted through experimental findings, to lead to a more complete and complex explanation.

Do u mean that you want this Answered in a vid

The Higgs field explains why some particles have mass; if a particle interacts with the Higgs field, it has mass and therefore must travel slower than the speed of light. If it doesn’t interact with the Higgs field then it is massless and can only travel at the speed of light. It isn’t the case, as is often reported in the media, that the Higgs is the source of all mass though; the vast majority of the mass of say a proton comes from the binding energy of the constituent quarks, not Higgs interaction. The luminiferous ether hypothesis posited that light traveled as a wave in a medium (the ether), similar to how sound travels in a medium like air or water. The two concepts aren’t really related.

@@JohnnyAmerique Excellent description of Higgs. I do like the fact that nuclear binding energy is responsible for most of the proton mass. Since E = mc2 - then when fusion or fission create a loss in mass that converts to energy as in a bomb or nuclear reactor, what is really happening is that the emergent measurable property of "mass" is really emergent from the associated energy. So in the end E = E !!! As far as the ether goes however - In reality, each light-generating atom carries electric fields around all of their charged particles and at the moment of light creation, a kink or ripple begins to travel along the electric field as an electromagnetic wave. So in short - each electron involved in generating light is carrying its own personal "ether" before, during and after light propagation.

Really, the only thing they have in common is that they're both supposed to permeate everything. The ether was supposed to carry electromagnetic waves, and the Higgs field doesn't carry electromagnetic waves. The Higgs field is supposed to give particles mass, and the ether wasn't supposed to do that. . And from experiments the Higgs field exists, because Higgs particles seem to have been found, and the ether does not exist. Instead, EM radiation seems to be fluctuations in electromagnetic fields, IIRC.

@Zed is dead according to articles on the internet time travel follows Novikov's self consistency principle which forbids changing history and that if you tried, something will stop you from doing so.