This is how time travel is illustrated in physics textbooks

[@SeppelMadGuitar]

You videos are like a small refuge from this insane world. A short place in time where reason, curiosity and wonder still exist like they did when I was a child. Thank you

[@AJ-kv1po]

Like listening to a Murakami novel 😊

[@AldSotha]

So SMOOTH ! I agree. Your comment is very well spoken.

[@Meandmy980]

A comment that expressed my emotions perfectly

[@A_A_12_]

I could not have worded this better myself. U are a representative, my friend ✨️🤝

[@Saemsen78]

Alas there is no time our thinking of time is imaginary and based on earthly time, it is an invention of the imagination what really is and all there is are the events propagations event propagations are now and forward. Those events cannot be reversed to go back to the events that have already happened, which we called the past, depressing as it is in truth this is all there is there is no time travel because there is no time there are only physical events that March after the other vibrations and oscillations 13:49

[@nzs316]

My favorite bedtime story. Her presentations are so relaxing and thought provoking.

[@prakashchikte5458]

Very true

[@ChethanKP243]

Mine too.

[@dany4977]

I loved when you mentioned how meditating puts us in a static space time ✨ very insightful

[@ragdollmag]

a great way to explain being in the present

[@jayjames5613]

That's because in meditation, there is no focus on 'time' or the perception of it. After all, time is only a concept that man created. It doesn't really exist aside from how we use it.

[@ani_n01]

How is that insightful, that is a joke about basic people who say that unironically I think

[@daytradersanonymous9955]

​@@jayjames5613🙄 are you a teenager or spend too much time on social media?

[@MarcosElMalo2]

I am a time traveler, moving forward in time.

[@nusratzahan6397]

A true time traveller can skip some portion of of a time and move to another portion

[@Thegreywarden]

What is the rate of travel through time that you experience, something like a rate of one second per second perhaps? How fascinating 🧐 😂

[@iseriver3982]

​@@nusratzahan6397it's called sleep

[@jasonremy1627]

​@@ThegreywardenI went jogging earlier today, so I moved ever so slightly faster than 1 second per second.

[@MarcosElMalo2]

@@Thegreywarden Pretty much. But have you ever noticed that sometimes time slows down and a minute can seem like an hour? And in other instances, time passes much too quickly, usually when you’re having fun? Anyway, when I time travel, I enter what I call “concurrent time” or con-time. I’m currently devising a method to record my experiences in con-time. It involves taking snapshots or as Tibees might call them, “frames”, and then applying motion blur for the unrecorded time between each frame. I have only to acquire a recording device and I can begin experimenting.

[@KentHambrock]

Great video with some really excellent examples! Minor correction for 02:00 You say every atom in a person's body is replaced every 7 years. That's based on the common misconception that every cell in a person's body is replaced every seven years. This misconception comes from a paper written by Jonas Frisen and published in Cell in 2005, where he estimated that the average age of every cell in the human body is only 7 to 10 years old. The press ran with the headlines that eventually fell into common knowledge despite being wrong. I too fell for that common knowledge trap, but when I looked it up, I found out that while many parts of the human body will be replaced within the 7 to 10 year mark (much of it will have been replaced many times), apparently some parts of your body never actually get replaced like tooth enamel, the lenses in your eyes, and the vast majority of your brain cells, while some parts, like your stomach lining, might get replaced every couple of days. As for the atoms specifically, a study from Oak Ridge Lab in the 1950s said that 98% of all the atoms in your body are replaced every year. Some conversations that I found questioning it suggest that the 98% might be random, meaning many of the same cells would get hit reguarly while others nowhere near as often. Possibly taking 16~ years to replace all the atoms that could be replaced. I personally find the researcher's use of strong absolute wordings in interviews about it despite the findings being heavily based on extrapolation to make me feel less than confident in its findings, but I didn't spend too much time looking around for people attempting to prove or disprove that study, so I won't suggest taking my word on it's validity. Anyways, kinda unrelated to the video content, but you did an excellent job on your nails 👍

[@publicspace234]

You are the perfect blend of pleasing ASMR voice and great Physics / Math information. My body doesn’t know whether to fall into a pleasant slumber or stay peaked with interest. Great video and editing!

[@User-435ggrest]

Same! I'm about to fall asleep, but I want to watch more! Hope you sleep well!

[@publicspace234]

@@User-435ggrest Thank you! Very kind comment. hope you got some sleep too :)

[@xtieburn]

It was actually Feynman who first shot down the one electron universe with the whole more electrons than positrons issue. (Even though he took great inspiration from it.) Wheeler did think the antimatter could be hidden somewhere, but I dont believe Feynman was all that convinced.

[@mandalorianwiththemandarin4339]

Dr Freeman?

[@deananderson7714]

How are we sure that half of the galaxies we see out there aren’t just completely made of antimatter? Is there any way to actually know from a far

[@nateschultz8973]

​@@Music.Genius1 Surely, you must be joking

[@hallamhal]

13:58 I wasnt expecting the sudden existential horror like that 😂

[@christopherleubner6633]

Tibees was very bright. She made a ship that could travel faster than light. She went out one day in a relative way, then came back the previous night. 😀

[@ThreeEarRabbit]

2:02 I'm actually thinking of writing a science fiction novel based on this idea of "world lines" and the perception of a single lifetime. It's going to be titled "The Hive Dynasty" and I am currently brainstorming ideas. Hopefully I'll get this published before I graduate university in 3 years. Also, amazing video as always Toby!

[@mackinleymenezes8286]

I thought about about this back in 2017😂

[@thefireman3476]

That's basically steins gate

[@me2ontube]

are you stealing from my book, The Dynasty Hive - HOW DAAARE YOOOUUU 😠

[@ThreeEarRabbit]

Interesting, seems like the hive mind already exists.

[@me2ontube]

@@ThreeEarRabbit lol

[@sallyficquelmont914]

I love this kind of social commentary on science topics. Love your work Toby.

[@dex_xter4275]

I don't know anything about physics, I'm just here for the voice. Thank you

[@sophiaisabelle01]

We appreciate the amount of hard work and research you’ve provided. We will support you no matter what.

[@mrjonesyyy]

You're back, and always bring such interesting content and topics to discuss! Appreciate you, Tibees!

[@SacredSecret]

Very interesting topic along with the several theories presented. I'm a scifi fan of time travel also. Coincidentally, all this past week I've been binge watching previous episodes of Dr. Who. Thanks for the effort you put into the presentation Tibees. 👏

[@grizzlywhisker]

That Quasar theory in the Einstein related book was really interesting. Your videos are really cool, your voice/accent and narration make them really fun and interesting to watch. Thanks for all the awesome content.

[@Area1-m2d]

1:59 You showed a version of linear and space time curvature. Linear time and curved time, operate on two functions. (Line and spirals in geometry), 1) linear time is forward (only) 2) curved time leans back and forth, (swinging like one of those see saw bird toys drinking water). You’ll see these in Mandlebrots as well. Great video.😊

[@keix]

the first book encapsulates my understanding of how time works in our experience best, really glad I found your videos, new fan

[@nicoleayah]

This is so impressive. More on this please!

[@NatorDM]

I literally cannot tell you how great your videos are. This one in particular. I’m a writer and was messing around with a time superpower and trying to understand it from a real life and real science or even theories standpoint is incredible keep it up!

[@LeticiaOliveira-pl6tk]

What a poetic view on time! I love that theme! I’ve been writing poems on it.

[@katnisseverdeen5466]

I'm about to start an extended project qualification (in my last year of high school) on the physics of time travel, so this was really interesting and relevant! Thank you for the reading list!

[@TheDude1764]

I always enjoy your videos and how well thought out your presentations are. Thank you! I don’t know what’s happening in your life, but I feel compelled to comment that you seem very much happier in the recent videos. I do hope you have continued success and joy in your life. Thank you again for sharing with all of us.

[@erdem4443]

really, your video content is both educational and your own charm is clever, self-confidence is dizzying I wish the teachers in our education system had a quality vision like you we are following you seriously, if it has Turkish subtitles, you can follow it more closely, take care of yourself, stay in good days❤

[@susumichiran3586]

Your videos are the reason to understand physics easily and start to loving it

[@Patrickthe1st]

I'm too stupid to understand any physics based material but you're making it accessible here and dare I say it, fun!

[@BEN-zm9bq]

Its just beautiful, what people can think of

[@PabloBatistaArq]

I loved this! Wow! Is there more videos like this, showing mind-blowing concepts and different interpretations?

[@ogagagodwin8917]

good evening from Nigeria, my maths/physics teacher,there was a time i dreamt and saw a time maching,by then i was a 300 level physics student in the university, with ur explanation i hope to build one very soon

[@andrewpayette621]

I noticed the Toronto scene. Tyvm!

[@Amazing_Mark]

Absolutely fascinating. Well done Toby! 👌

[@lightwire123]

Paul Davies is a professor at the university I attended : ) I'd see him here and there at different physics events

[@Sam_on_YouTube]

The idea of a 4D worm is prevalent in philosophy of physics as well. I believe it is discussed in 4 Dimensionalism by Ted Sider. My college thesis in philosophy of physics used that as a jumping off point and discussed the two major theories in the philosophy of time as modified by both relativity and quantum mechanics. Roland Omnes, a french physicist, wrote several good books on it, my favorite being Quantum Philosophy.

[@Yasmin-pi5pr]

This video made me feel excited as when I was a child! I missed that feeling, thank you so much! Afterwards I starting investigating about entropy, time, etc lol

[@muminhn1002]

Your channel is just a breath of fresh air. Even imagining those concepts gives me a pleasure.

[@psionicjake]

Wow this blew my mind! And I love your cute bookmarks!!

[@pi1392]

Lately I'm obsessed with time travel, this was a great watch. thanks Tibees.

[@navstar7334]

Nicely presented & concise intro to this absolutely fascinating aspect of the physical world, plus basing it around that small group of books was a good move IMHO 😉... I really can't see how a more thorough yet accessible presentation of this captivating yet frustrating topic could be have been made in 15 mins 👍! Cheers.

[@sathyaganesan5173]

Your voice is like a unseen characters cosmic voice guiding humanity through the maze... amazing...

[@davemmar]

We exist in a time bubble that is regulated not just by time but space. Because our bubble moves around the solar system at one speed, our galaxy at another and our galactic cluster at another, time travel alone would place us in a void. So consideration of the location of our bubble is a must. Travel back in time requires consideration of where one was at the chosen time destination. Forward in time needs to consider where we will be. Otherwise one would end up in the blackness of space. Your videos are always thought provoking and I thank you.

[@bentonrp]

(Geometry, Relativity, and the 4th Dimension) What a cool way of looking at reality! 🙂

[@grahamewelch1585]

I just rediscovered your channel and can't tell you how wonderful it is to be back here!

[@christianhunt7382]

So lovely, I'm enamored by your intellect and delivery of such complicated ideas.

[@kounaboy7011]

7:45 basic existics and dimensional analysis for pin point labeling. Prime distance. Fold patterns for solenoidical matrices.

[@doggo7078]

3:48 I can't believe they made a whole book explaining that time travel episode of Futurama, Matt Groening's trully a paramount genius

[@Benoit-Pierre]

there is more about futurama. Several episodes have been proved to include true formulas .

[@doggo7078]

joking, the joke is that I was saying it as if Matt had invented the formulas. I also only referenced its most iconic time travel episode for simplicity of the joke

[@jimtriggs2869]

What do we want? A time machine......When do we want it? Really doesnt matter!

[@julakeal]

Pardon me, ur voice is super calm my feeling and very asmr thanks for all ur vids.❤

[@HeyHeyHarmonicaLuke]

Cool! Paul Davies' About Time was my first serious science book as a kid. I don't hear it mentioned often :)

[@davidca96]

Time travel has always been a dream of mine as a kid, not forward but back.

[@seandudley4766]

Thank you! I've certainly always had such trouble visualising time travel.

[@speedhunter_TM]

I love your physics videos and shorts! Please keep posting more of them 🙂

[@grrlsports]

You are my favorite KZbinr. These videos are everything.

[@3DJapan]

A great realistic film about it was Donnie Darko. The directors cut DVD came with a ton of extra information as well.

[@DavidNorthMusic]

I really loved watching this video, I was intrigued the whole time, and understood about 0.5% of it. Thank you :)

[@terenzo50]

You made me remember an old limerick: There was a young lady named Bright / whose speed was much faster than light / she went out one day / in a relative way / and returned home the previous night. BTW, it's hard to imagine that there's some concept out in the world that you don't understand.

[@JustOneWillingSoul]

Worm: Hello! Fish: BITE Worm: pull you UP! Fish: FREEDOM!!!!

[@semolinasemolina8327]

"This next bit makes a ... slight... departure from physics..."😂❤

[@baxterous]

thank you for these. Your videos are such easy listening.

[@johnlime1469]

Watching _TENET_ is actually helping me understand the one where all electrons are one and the same.

[@MiLeyendas]

6:33 🤯 everything is one, and the illusion of time!!!

[@YvanCartwright]

Great overview of a complex topic! Ever thought of doing a similar piece on time travel in fiction with notes on the plausibility of the time-travel mechanism from the viewpoint of a physicist?

[@blah555able]

My gawd, i could watch and listen to you all day!

[@erikd1012]

Absolutely brilliant. This video is a great mix of science, the unknown, and meditation

[@_just_looking_thank_you]

I’ve come from one month in the future to proclaim that this video will have been viewed more that 100,000 times.

[@timstalam]

i don't have the scientific literacy or smarts to read books like these thank you for making fascinating topics accessible to normal people

[@BigIronEnjoyer]

I'm most impressed by the sheer number of page markers in those books.

[@SstFun0.2]

I like physics and I study it every time I have . I like her video too❤ much she explain every topic in a common earthdown way that help too much to understand.

[@BrunoCookie]

Damn Toby, even though i suck at physics, you inspired me to take interest in it, and now i truly realize its worth

[@raimonsabater]

Very interesting, thank you! Content on time travel and higher dimensions make my mind explode :)

[@BLSEducational]

@Tibees with the Dharma meditation when people stop new thoughts, it takes 1-2 hours doing it before someone gets to the point that not only their thoughts stop, but they struggle to have new ones. At that stage you can not only get time to stop, but you can get rid of space too. You can end up in the state where literally nothing exists at all.

[@anasofiapereira5244]

You are so sweet! I never met someone explaining physics like this, I loved it! I think this way even a little kid can understand it. 😊

[@EmpyreanLightASMR]

Her personality makes me wonder how she dealt with working in a team environment. I always end up on teams where I do the most work (literally 80-90%), and then everyone gets mad at me when I get frustrated at them. I wish she'd do a project management video, how to manage with the temperament of a My Little Pony. I could learn from that, for real.

[@denizkendirci]

3:00 honestly, i didn't even know that thinking nothing was possible.

[@btwineu2me]

The concept of various modes of time travel are encouraging as are the paths approaching that of the speed of light with various scenarios.💞

[@esslar1]

"You'd need a rocket the size of a galaxy to have enough fuel and you'd probably get lost." Now, this is a sentence I truly could never have imagined hearing!

[@kounaboy7011]

10:10 Rubidium experiments on the gauge problem, divariance pressure. Charge argumentative physics.

[@Furedonia]

You are so fun to listen to, keep up the great videos!

[@spiralsun1]

Awesome ❤ One of my absolute favorites of your videos THANKS! ❤

[@douglasstrother6584]

"2.21 gigawatts! Great Scot, Marty!!" "What's a 'gigawatt'?!?!"

[@rml54]

It's like I've discovered an oasis of the worldscape! I like your discussion on the😮 application of time to meditation. YOUR brain is like a universe unto itself where Beauty, matter, exploration, the outback, thought atoms & a Time vortex all conspire to astound and illuminate!!! 😊

[@kounaboy7011]

14:18 hildeberg space requires black hole proximity in existics. White holes are the positive net energy result of ergium-superradiance balance. A white hole is the acceleration frame from a black hole. Not to be confused with the opposite. Ergo argum avis etcetera

[@COMBAT4TRUTH]

Glad to see your back. I love the content!

[@kimjong-du3180]

"Time is a flat circle. Everything we have done or will do we will do over and over and over again-forever"

[@Yahooah-q8v]

John Paul Jackson went back in Time 🤯🤯🤯🤯

[@Xgen]

Very good video ! It was interesting to see in what different ways real physicists see time travel.

[@HeyHeyHarmonicaLuke]

13:30 "space time breaking up" is also called 'jiffyland' by some authors, if anyone wants to read more. (Pretty sure it was in Paul Davies's About Time too, at the minimum.)

[@dingbaaat5569]

Just the video I was looking for to write my assignment

[@aaronharthun3602]

I'm enjoying your videos! Thank you for your passion and sharing

[@gaiaocracy]

A calm review of mind blowing thoughts. Thanks!

[@roger_clay0381]

Luv your videos tibees, just found you recently and I think you’re quite intelligent :-)

[@stubbornone1189]

Very interesting. Thank you for this breakdown.

[@kevanhubbard9673]

Yes I've thought about this.If you could fold space like in Dune and travel instantly to Proxima Centauri then if you had a powerful enough telescope and looked back at Earth you'd still see yourself on Earth for about 4.3 years(is there two yous?).Therefore ways of avoiding breaking the Speed of Light still have the inherent paradoxs even though you have found some way of avoiding breaking the light barrier 🚧.

[@Ozone946]

The time loop creation of the universe reminded me of a game just as cozy as this channel called Outer Wilds. Its really good!

[@philip5940]

The many paradoxes that could occur rule out time travel

[@protocol6]

I keep wondering about the quarks. The up/charm/top stand out as different from down/strange/bottom and electron/muon/tau in that their charge sign doesn't follow their matter/antimatter label. You can collapse several separate conserved quantities (lepton, baryon and quark number) into a single charge conservation if you assume that's a mistake and it simplifies things a lot. Still works with the zoo of observed meson decay products. A bunch of related math would have to change but I think everything would still work. It gives you a picture of our universe with half matter, half antimatter. It doesn't get you a one-electron universe, though, unless electrons and positrons can somehow masquerade as quarks. It's almost like quarks in a proton are the gaps between three integer charge particles rather than the particles themselves.

[@ghost_control3276]

Holy crap!!! Magic school bus come to life!!! Mrs. Frizzle!

[@thomas-carlosciacca6115]

I could just sit talking to you for days

[@bluskyz7398]

I am open to all this, but I cannot wrap my head around other dimensions. I hope that when we leave this earth, we will be instantly knowledgeable about everything!

[@larryburns7225]

A couple of movies that mite interest you (The Philadelphia Experiment) and (The Final Countdown) both are time travel movies The Philadelphia Experiment is based on actual events.

[@donkalzone6671]

Use a blackhole, it creates a loop-tunnel during the time it exists. It might not be possible to send matter through it, but you can send information, like a digital copy of your mind. You also need to build an reciever that can recieve and decode this information. And a "suit" in which you can upload your mind. The only issue is, yoy can only travel back (or forward) into a time when this reciver exists.

[@lonepo3t]

9:40 That's the same principal the main character went with at the end of interstellar