Traveling Back in Time
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- Опубліковано 2 тра 2024
- Is it possible to go backwards through time? We travel forwards every day, but traveling back could let us change our past, visit old friends, or manipulate the timeline to our benefit... Although our knowledge of space and time remains incomplete, we can still use what we know to consider possible time machines. But what kind of paradoxes would this entail and how can we resolve them? Join us today on a special journey through time.
An educational video written and presented by Professor David Kipping
This video is based on research conducted at the Cool Worlds Lab at Columbia University, New York. You can now support our research program directly here: www.coolworldslab.com/support
All music used is licensed by SoundStripe.com or through Creative Commons:
► "It's Always Darkest Before the Dawn" by Hill, licensed through SoundStripe.com: app.soundstripe.com/songs/7441
► "Waking Up" by Atlas, licensed through SoundStripe.com: app.soundstripe.com/songs/3984
► Cylinder Four (chriszabriskie.com/cylinders/) by Chris Zabriskie (chriszabriskie.com/); licensed under a Creative Commons Attribution license (creativecommons.org/licenses/...)
► "Always Dreaming" by Caleb Etheridge, licensed through SoundStripe.com: app.soundstripe.com/songs/5534
► Cylinder Two (chriszabriskie.com/cylinders/) by Chris Zabriskie (chriszabriskie.com/); licensed under a Creative Commons Attribution license (creativecommons.org/licenses/...)
► "Fable" by Stephen Keech, licensed through SoundStripe.com: app.soundstripe.com/songs/6312
► "Selha" by Stephen Keech, licensed through SoundStripe.com: app.soundstripe.com/songs/7102
Further reading and resources:
► Echeverria, F., Klinkhammer, G. & Thorne, K. S. (1991), "Billiard balls in wormhole spacetimes with closed timelike curves: Classical theory", Phys. Rev. D., 44, 1077: ui.adsabs.harvard.edu/abs/199...
► S. Kalyana Rama & Siddhartha Sen (1994), "Inconsistent Physics in the Presence of Time Machines": arxiv.org/abs/gr-qc/9410031v1
► Stephen Hawking (1992), "Chronology protection conjecture", Phys. Rev. D., 46, 603: ui.adsabs.harvard.edu/abs/199...
► Max Tegmark (1997), “On the dimensionality of space time”, CQG, 14, L69: arxiv.org/abs/gr-qc/9702052
Films clips used:
► The Assassination of Jesse James by the Coward Robert Ford (2007) Warner Bros
► Interstellar (2014) Paramount
► The Grey (2011) Open Road Films
► About Time (2013) Universal Pictures
► The Time Machine (2002) Dreamsworks Pictures
► Passengers (2016) Columbia Pictures
► Back to the Future (1985) Universal Pictures
► Avengers: Endgame (2018) Walt Disney Studios Motion Pictures
► Somewhere in Time (1980) Universal Pictures
► Lucy (2014) Universal Pictures
► The Matrix (1999) Warner Bros
► Immortal Beloved (1994) Columbia Pictures
► Prisoners (2013) Warner Bros
► X-Men: Days of Future Past (2014) 20th Century Fox
► Captain America: Civil War (2016) Walt Disney Studios Motion Pictures
► Inception (2010) Warner Bros
► Silver Linings Playbook (2012) The Weinstein Company
► The Dark Knight Rises (2012) Warner Bros
► Hidden Figures (2016) 20th Century Fox
Television clips used:
► The Expanse (Legendary Television)
► Star Trek: The Next Generation (Paramount)
► Dr Who (BBC)
► Star Trek: Enterprise (Paramount)
► Game of Thrones (HBO)
► Genius (National Geographic)
Other video clips used:
► ESO spacetime diagram www.spacetelescope.org/videos...
► Earth orbit animation by Brad Freese: • Earth Orbit
► Hefele Kating experiment video by Gideon Boulton: • hefele keating
► SpaceX satellite launch: • Iridium-7 satellites d...
► Wormhole animation by Robert Wilde: • Stargate Wormhole Anim...
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Cool Worlds Long Form Videos ► bit.ly/CoolWorldsEssays
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Guest Videos ► bit.ly/CoolWorldsGuests
Q&A Videos ► bit.ly/CoolWorldsQA
Tabby's Star ► bit.ly/TabbysStar
Science of TV/Film ► bit.ly/ScienceMovies
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THANKS FOR WATCHING!!
#TimeTravel #TimeMachine #CoolWorlds - Наука та технологія
My brother was killed on Friday September the 13 last year when he was only 35. A 25-year-old drunk driver going wrong way on freeway crushed his car head on. I felt so raged. I wish I could go back in time to make him stay home that fateful day. Thank you so much for your video. It is a wake-up call for me to not holding to the past, but appreciating every precious present moment with your loved ones, because life is so fragile and unexpected.
We all pass when its our time.happens to us all.
So sorry for your loss
D N I’m sorry for your loss
🙏
I know what you mean. My beloved cat got brutally murdered in 2009. I wish I could go back in time, take him with me to work every day - I actually considered this as I had a fear something like this might happen (it was my stalker who murdered my cat), but then I thought he would be safer at home.
If I could go back in time - I would take him with me to work, turn my house into Fort Knox or preferably move away, make the neighbors aware of the situation, and not leave my cat out of my sight!
I keep revisiting this video almost every day since a year ago.
My fiancé was going trough tough times and I was too busy with work to see her, She committed suicide One evening at 6pm, I remember exactly the moment and I remember every word of her last message, If I could have answered her Earlier She would still be here.
I was always too busy Working I never considered she would commit suicide. She was the most kind and Cheerful person I have ever meet, she was always looking for a way to help everyone. Maybe It’s not possible to go back In time, But I will never stop looking for a way to go back. Or at least have one minute to talk with her again.
Thank you for this beautiful video.
You should realize that eventually she would have done it anyway, stop blaming yourself. People with suicide tendencies just look for an opportunity but their mind is already made up most of the time.
Do you really think that one message from you and all of her depression and dark thoughts would have disappeared like they never existed 🤦♂️
Sorry to hear that she did this, I can't imagine how tough it would have been to go through and my thoughts are with you.
Hope you can find peace. Im sure she would want that. So sorry man
@@boltzmannbrain6607And what's saying one phrase wouldn't have that impact? it's entirely possible. Or maybe this situation is more nuanced than you're implying? 🤔
You come off very douchey in your comment btw.
@@butHomeisNowhere___ youre dumb. He is blaiming himself which is wrong. Its not his fault. Thats all I was saying
Stop being slow
Imagine having someone this passionate as your science teacher in high school , class attendance would be through the roof.. truancy would be a thing of the past
I hope he has children. This is the paradox of human reproduction. It often involves the worst of us creating more of us.
He's a great professor
Yeah, I can imagine it. It's called Private boarding school like Phillips Exeter! Buckingham, Brown, and Nichols. There's tons of em esp up here in the Northeast.
Our teachers didn't care enough to be this passionate about the subjects.
777
Such a beautiful, yet haunting video. I really miss my wife, but I push on and try to live my best life for our daughter that she left behind. Luckily I guess my daughter was young enough that it didn’t hurt her as much as it could’ve.
would you not have wished your daughter spent more time with her mom?
I'm so sorry for your loss. Your daughter is lucky to have you in her life. Be strong friend, for her.
@@beyondspace64 Sorry for your loss.
@@tomriddolls5301 What an insensitive question. Of course the man wishes that his daughter could have spent more time with her mother, as that also would mean more time spent as a family, and more time of his wife being alive. But it isn't about that. It's about trying to find some light in a sea of darkness. Even though it definitely hurts for him, it doesn't hurt as much as it could have done for his daughter.
@@lillkrull1161 this is the infinite time loop of life. Some last long, others shorter. And the cycle will always continue.
Only Dr. Kipping can bring a grown man to tears through physics. Let us raise our glasses...to tomorrow. And today.
i know what u mean, but eyes dont care if you are a grown man
Oh good, I hadn't had an existential crisis yet today.
palakaman haha that cracked me up!
palakaman
An existential crisis a day keeps the happiness away :)
@@sonarbuge7958 In the long run it's the opposite actually!
Take comfort in the fact that you're not alone in that, we all go through that regularly, I do every day. In this way we're all together in it
@@shivercanada Amen. ;)
I'm in love with physics since i was a kid... My daughter passed away 62 days ago, she had MRD and she went through horrible pain during a seizure she couldn't come out from.. 8 years old, 8 years of constant pain, in a world so cruel to ppl with a disability... While she was with us i kept dreaming about changing the course of time so she can be living normally in a different time line, that idea made me ease up a lil bit thinking that Sasha will be playing in a different universe. She's gone now, could've we stopped that, her mom and i? No...
Should we accept she is gone? We can't... Will there ever be a time we can go back and reconstruct our future? Crazy thoughts, i just wanna see my daughter again
Dear ,kinanatto257; I'm so sorry for your loss.. I can sense your level of longing to see her again and even though I may not know you ,I'd help tirelessly to make that happen for you if I could.❤
@@jaymakormik6779 ty Jay for being so considerate... Time goes on bur my friend, pain remains
OMG I’m sitting here balling my eyes out. I hope you are ok, god this life SUCKS SO BAD!! Nothing more except heartache
@@johng1758 no I'm not ok to be honest. Like my life ended when she departed, searching for her even though I know I won't see here again here. I was an atheist and now I'm praying to god to make me dream about her every night , praying that i see her in the afterlife so we could stay together forever.
I want to go back to the times before 2012. Back then everyone that I loved lived. Germany was better, the world itself had a different atmosphere.
I 1000% agree with you. Hope you're in good health
i got to go back to july 1 1983 that month my son will be born
i now have what it takes to time travel, what it takes u need a infinite power source for one thing and my infinite power source is infinite light speed which changes reality?
man doesnt have this power but i do now and im going to use it against man
A global repair of globalism........
The bartender says "we don't serve time travelers in here. Get out of here."
A time traveler walks into a bar.
Wot?
Lmao, epic x
Ohhh, I like that!
Wait, I dont get it?
Well played sir 👏👏👏
Brilliant, thanks for that!
Mate the emotional atmosphere you create in your videos is what makes them good, anyone can just state facts but you add weight to them. Keep it up dude!
Thanks!
Good advice
I agree with this - it's one of the reasons I watch Cool Worlds. As a Science communicator - @Cool Worlds does an awesome job at giving weight, and therefore meaning, to the words.
@@CoolWorldsLab *generating a notification* Please see my response to the main comment. :)
@@CoolWorldsLab hi you hit the nie right on the head undo right a wrong of a mistake I made in my life changing the past would change the present casting a wish spell on a full moon if this time portal opens I would walk staght through it right my letter then get back to present save the one what I care about and my self one I can tell you is I sleep on my sette as I was in a deep Fort and as I was partly asleep and partly awake some energy thought me of the sette on to floor it felt like someone pushed me 2022 September 3 2012 I slept on chair and I felt someone walked into me as I woke up in shock I ask me self why did this happen to me something shouldn't had happened thay whay did if I get a chance I would do it in a heart beat 💕🧭🧭🌕
This video utterly breaks my heart. it’s beautiful. It’s equally hopeless and profound. Painful, haunting truth. ❤️
Makes every choice, every act, every moment as crucial as the last. Every interaction we have with others- how we treat each other- the choices we make will irreversibly impact all others. Make your moments worthwhile.
They say Astronomy is a humbling profession. the more you know about the Universe, the smaller and smaller you feel, which makes you want to cherish all the memories that you have in this small span of time you live.
One aspect of time travel I have never seen addressed in any movie or video is the fact that the earth is moving. It is moving very fast. We are not at the same place in the universe that we were a second ago. If you travel either forward or backward in time, you are going to end up in space! I'd like to see Cool World Lab address this point.
I mean if you have figured out a way to move around in time then I'm pretty sure moving around in space would be nbd.
But in like magic time travel examples such as in Somewhere in Time I can see you having a point
Well Doctor Who actually address this sometimes. The TARDIS stands for Time and Relative Dimmension in Space. Putting a neat little bow on that particular problem. I agree its definitely glossed over a lot thougg
This video is truly a masterpiece. I’m brought to tears ever time I watch it.
This should help ua-cam.com/video/hC9I0vHsrzI/v-deo.html
Came for the science, stayed for the existential crisis.
ua-cam.com/video/PkKAHroBTtA/v-deo.html
@J. Angel. You won the comments section !
my grandmother passed away 3 months ago :' i want back to the past to fix everything and spent time more give more hug to my grandmother :'
I can’t fix my life unless this is possible. Hopefully it is
Times lack of mercy is a gift...and so is this channel imo. 😊
Cheers James!
True. This material has brought me to tears a few times. It's all so mind blowing, matter of fact, and well presented.... 🤦🏾♀️ I fangirl every once in a while.
Time's lack of mercy is a double edged sword
This is a disgustingly underrated channel
Yeah it is!
Looks like it is starting to pick up though
It just shows intelligence is rare.
Life-long learners can appreciate the knowledge backed up with the data,facts,grafts,visuals,🎯on point
I love how this guy can explain science in a dramatic way 😊
Your best video ever. Not from the scientific perspective, but from the spiritual.
I can't go back. I can't go back to tell someone just how much I love them. I can't go back to say just how sorry I am, before she walks out of your life. I can't go back and undo what I have done. I can't go back and do what I wanted to do but didn't. Thank you for this video!
"Learn from the past, live in the present, hope for the future"
@Rogue Mentality Your making a comment. Have you gone back?
My best friend and companion( My Chihuahua) had a heart attack 16 hours before this video. I carried him to the hospital. He is alive today, maybe only for a short while longer, and I am truly inspired to not regret the times I did not spend with him but to cherish every sunset until I lay him to rest. My tears are flowing now, but I am better prepared for tomorrow. Thank your Doctor!
Has he perished?
@@jaredgarbo3679 Don’t ask that...
A really brilliant explanation, as a person it changed my perspective on time travel, it’s really fascinating in addition to that the most important lesson you should take from this masterpiece is: don’t waste time on regrets, live the moment because it’s already passed.
David, not only are you an amazing physicist, you are a great story teller, voice over and creative producer. Multi talented... wish I had you and prof. Susskind and prof. Tegmark as teachers. Keep up this great work.
This channel is SOOO deep
Its philosophical
It’s great to be able to share these with you all, thanks for your time!
The depth of your profound discovery is shallow water for many. Remember depth is a measure of a mind.
Pedro Vazquez its thought provoking. Challenge everything and everyone that destroys the meaning of your reality. Believe it or not the human mind is evolved for this very task.
@@grandmaster-grouch I like to challenge those and that which gratify the meaning of my reality. Shallow water.
The message at the end of this video is heartwarming to say the least.
ua-cam.com/video/PkKAHroBTtA/v-deo.html
I just replied because why not?
yeah it was like WOW
@K C Jones it's a sad & beautiful world...
And depressing. Very sad and most depressing because it is something beyond our reach. It means we wont get the answers to certain questions that have plagued researchers. There are tons and tons of questions and problems that could be fully resolved and settled and put to rest if we could just go back and visit the past and just SEE how some event played out, not CHANGE anything, but just OBSERVE and study and examine what we see. How many problems and questions that would settle! EXAMPLES: 1. we could finally KNOW how the pryamids were built. 2. We could find out if Moses or Solomon really existed. 3. We could find EXACTLY where Alexander's tomb lies. 4. We could know exactly what happened to the Ark of the Covenant .5. We could learn exactly how and why President Kennedy, or the actor George Reeves died. and 6. Scientists could see EXACTLY what a real T-rex looked like! Thousands of other mysteries could finally be completely solved simply by going back and using our eyes!
It's not every day I shed copious amounts of tears watching educational content. As I quickly scan só r of the stories about this videos, my tears intensify....
They add to my perspective, enrich your message and at the same time breeds more questions, triggers my sense of justice and fairness and how the universe and its timeline seems blunt and without prejudice. It plays by its rules without any regard to whom you are.
My sorrows are a drop in an ocean. One that is surrounded by joy and what times does to you is, try to teach you, as you brilliantly portray, if you don't look back, it's invisible and what's in front of you is the joy just waiting for you to walk through it, face forward. That's all there will ever be.
Thank you for being more than a physicist.
Anybody interested in time travel should watch DARK on Netflix. It deals with an extremely elaborate time travelling story with bootstrap paradoxes, multiple timelines and multiple universes. It's a criminally underrated series.
Is it on Netflix?
"Forgiveness Is Giving Up All Hope of a Better Past." - Unknown
That's kind of stupid is my first my initial feeling but I don't know whatever man too many of these videos today brain hurty
This is really enlightening as I think more about it....
Unknown bc it's absolutely retarded. That's like the kind of thing you forget as soon as you hear it. Like it's almost a cosmic paradoxical contradiction period but really it's just stupid to shed all pretentions. Very cute cat though in your picture
@@adarsharao not really my first impression was that it was numb but I gave it more thought, mostly cuz of the kitty in the picture, but I didn't want to judge too harshly and now I see my initial impression was correct it's dumb
@@aaronbradley3232 That quote has been around at least 30 years and with a quick google search, reveals it's been attributed in some variation to a couple of different authors. Just because you don't understand it, doesn't make it dumb.
Each of your videos is a *master piece*
Lets not pervert the word masterpiece here. He does great work. For it to be a masterpiece it has to influence the path of mankind.
Agreed
The BEST Videos ABOUT SPACE, VERY UNDERSTANDABLE...
Sans Handlebars well aren't you billions of years of Darwinian pettiness rolled into a tight ball that i wish you could insert into your own rectum ad infinitum... master piece may have been intended to have alternative meaning to masterpiece you insanely arrogant master bator... i agree with the OP and would add master space to the accolades for this channel 👍
this is one of the best channels i have ever found on here
Not to sound petty but ya... everyone is free to have an opinion, but it's my understanding that a "masterpiece" is any individuals best work at that point in their life. Usually we think of masterpieces coming when an artist or creator is older... because at that point the work is a culmination of years of experience and learning what worked and didn't. A picture of a purple and orange elephant dancing on a swing set is a 5 year olds' "masterpiece" because it's the best they have ever done till that point and don't truly know if it will get better or improve in the future at that present time.
Either that makes perfect sense or I'm stoned as fuck and it's 1:38 am...fuck it, it makes sense to me. Basically what I was trying to say is let people call it whatever they want. I hear music on the radio everyday that apparently is made by "talented artist"...see how that works? (The music is very basic and the singers have so many filters on their voice to make it sound good it literally is the opposite of talented)
Imma shut up now. Enjoy the fucking video/channel... it's hella enlightening or sum shit 👁️👄👁️
I felt that I wanted to go back in time to undo anything I did wrong.
I feel that. I would love to go back and fix things, undo all the mistakes I made. Who knows where I'd be now.
@@noshow22 Yeo, lets hope that warp drive stuff they're been looking into takes shape.
@@jaredgarbo3679 looks promising,I think.
Im utterly hooked on this channel. Its rather nice to be educated by a professor this passionate and refreshingly humble.
How in the hell does anyone get this smart? I love this channel because it makes my head hurt!
Passion. What are you passionate about? I’d love to hear :)
We may not be able to go back in time, but we can rewind and watch your videos as many times as we like. That's all we need.
A thing that i love of all your videos is that they are not just filled with science, but with poetry as well... This makes them so fascinating and effective
This introduction 'Time is a merciless companion...' and 'or perhaps you wish that you could go back and wipe a wrong from your past...to undo a mistake that haunts you every day of your life' gets me to tears every time as I'm sitting here quite educated on cosmolgy and physics yet haunted by so many mistakes from my past knowing I most possibly can't reverse them and having to live with them the rest of my life. Thank you so much for this channel
The last 3 minutes really hit home for me. Live your life to it's fullest. Live, Laugh and Love.
I could listen to him all day long and im the type of person that goes to another video after a minute or two after watching it because i cant listen to people for long periods of time.
Thats right
Mmm.. yes: that voice is quite crack like... 🤤🤤🤤
This guy is so eloquent and passionate about science, he makes me want to go back to school and start learning something... I don't even fully understand what he's talking about, but he inspires me... Thank you, my bro bro!!!!
Thinking about this makes me sad because now later in life and recovering from cancer I really can only look back and wish I would have done some things differently. Everything important to me is behind me...
I almost cried, this topic is so interesting
His voice and background sounds he chooses are the best meditations of the century
This is one of the best videos I have ever seen. The message at the end of the video is how everyone should be thinking. The world would be a much better place if everyone thought like that
I recently found your channel (I'm obsessed with space so your videos were suggested) and I have to say I'm so glad they were! You take already fascinating subjects like this and make them even better.
Right now I'm recovering from surgery and your voice is so soothing. I've been resting in bed for a few days and binge watching your channel! Thanks for sharing all of this fantastic content! ❤️
It's so hard to find great content that pulls you in and holds you at full attention such as your content and story telling/ narrating does, i truly love this channel and content !
Great to see this brilliant channel growing and getting the recognition it deserves.
ua-cam.com/video/PkKAHroBTtA/v-deo.html
Da Baby runaway from da baby
Go to Thepolishedknob UA-cam channel for real grey alien footage.
I replied to the same guy again because why not?
@The Gunman @Cool Worlds Well, except for the part where the narrator keeps playing with himself instead of getting to the point. Good god, what a disastrous substitute for authentic content. Meanwhile his newsreader's emphasis on every second or third word is simply appalling in its brainlessness, a robotic substitute for marrying deserved emphasis to meaning.
19:00 This becomes a staple of time travel in Doctor Who. Once an event is learned of or realized, it automatically becomes a fixed point in time, meaning any attempt to change it causes a paradox that would ultimately disintegrate the time stream. Of course, it's because DW operates on the concept of a singular timeline, as opposed to the theory of multiple timelines.
But that was only the theme of some episodes. The doctor would also say "time can be rewritten". I don't think time travel is possible, but I'm sure it has been a fantasy for as long as humans have had fantasies.
@@mavisedwards As far as I know, the only time The Doctor has said that time can be rewritten was when River sacrificed herself in the Library. The next time that phrase is mentioned, it's in The Angels Take Manhattan.
Amy: Time can be rewritten.
The Doctor: Not once you've read it.
It basically states that if an event is observed in some way, shape, or form (at least by a time traveler), then it becomes a fixed point in time and any attempt to alter its outcome results in a time paradox that threatens to disintegrate the time stream entirely.
@@malcolmmorin Plus when Rose saved, her father I believe? some fucking time terrors came to destroy the timeline
One of the most underrated channels! 3M subs will make me happy!
You've explained the subject matter in a way
so unique and mind blowing. And for that, I thank you.
I agree. It was beautiful and true what he said. Move forward to new discoveries!!!
There is one thing we can do: capture moment(s) in time by write, photograph, film and tell each other, for our loved ones or ourselves in the future.
The double slit experiment in quantum mechanics shows there is some element of time travel involved for the observation of a wave form causes it to collapse into a solid particle state whilst the prior observation of it being in a wave state is no longer present, as if it always was in a particle state the entire time. The explanation is that the collapsed wave function upon being interacted with and collapsing into a solid particle state must travel backwards in time and then from there go forwards in time to the present time of its observation collapse, but existing from the point of view of the observer as a particle the entire time, like the wave function never existed at all.
Thank You Dr. Kipping for your lovely videos. I've lived for 70 years and marvel at learning something new every day! Ronald. Orlando, Florida
Damn! That was an inspiring blending of physics, logic, philosophy, and every human’s regret and hope. Enlighteningly beautiful and profound!
I can't dismiss it because I love sci-fi films that play with it, I love to see more Time traveling movies even if I know it's impossible to time travel.
Wonderful video. Thank you.
Wait, was The Assassination of Jesse James by the Coward Robert Ford really a scifi?
I have yet to watch it, and just wanted to know.
Very powerful in the end. Live every day to the fullest.
This guys voice is so soothing I can honestly fall asleep to it.😂
Thank you so much for your content. I’m just a tattoo artist and oil painter I was terrible in school with my head in the clouds but have made a good living with my work. I have always wished I knew more about science and the universe. I wish I would have had a teacher like you.....back in time. Take care
Profound, deep, sad, beautiful. Exactly what I needed to hear today. Thanks man!
Just found this channel recently and currently in the throws of a binge-out! truly amazing content, expertly delivered and just awesome narration style. Props :-)
*throes
My husband passed from an unexpected heart failure 4 months ago. I watch this video almost every night to comfort myself-I couldn’t know what was going to happen and I couldn’t have prevented it. Yet, I wish for it daily…because I am human. To wish you could rewind time and to have changed the outcome of a 26 year relationship.
This channel is amazing, love the way things are put into perspective with a logical sense of understanding. Almost heartbreaking at times, but always peaks the interest beyond normal everyday thought while making me question every single detail of my everyday life. I love it!
Ok I've absolutely fell in love with your channel....please keep uploading...please...this video helped me so much
Does this actually work
I've been watching a few of these videos and the more recent ones, like this one, have a profound lyrical beauty to them. Please keep making them this way.
I love the way outer wilds fixes this, it just ends the entire universe as causality is destroyed
Professor Kipping your videos are so damn clear and easy to follow. High density of learning/connections per minute. Make more :) :)
I was gonna Say that too 😇
The timbre of the voice, the speed, the tone and above all the simplicity ... leads me to be increasingly interested in the topic. Amazing.
This channel is simply amazing. The way you connect with the viewers while beautifully explaining such abstract concepts is not something I have ever seen before. Thank you
Dr. Kipping, your work across the many channels I've seen you featured is extraordinary and widely appreciated. I just wanted to say thank you. I often am confronted with thoughts to which I have no answer regarding space, time and our position as humans in all of this. So I come here for the answers and often am left uplifted and thoughtful. In the same way one might feel refreshed after a physical workout, these videos make me feel something very similar.
I have only just started seeing/watching your videos. They are breathtaking. You deserve your own series with Netflix/HBO/Amazon etc. I LOVE your work. Thank you.
I'm so glad i found this channel before the word gets out.. the editing has gotten far crisper and the narration has gotten more focused. A+
what word ? get out of where ?
I disagree.
Of course, whats your point?
Damn you're a baddie 😘
Everyone, it’s a figure of speech
Thank you for making long videos. I get tired of all these 10-15 minute videos.
Keep up making such wonderful videos! You truly have the gift to communicate scientific knowledge in a very, very beautiful and poetic ways. Watching your videos takes me back in time -ironically- when I was a kid learning about space and time from Carl Sagan. I love your productions !
You are THEE beacon of light among all the dim-lit dimwit channels! Kudos! My hats off to you!
The idea of the universe stopping and reversing so one person can return to a single moment. . . .
Sorry all 8 billion people and possibly all 37 octillion other intelligent beings out there in the universe, but i need to rewind time a few years and possibly cause a catastrophe via the butterfly effect changing everything in the entire universe. But this is very important. A few years ago i came second place in a harry potter quiz. This time i will go back with the correct answers and win the whole damn thing! I hope you all understand.
Except its not really reversing your simply hopping from one point in time to another like you would hop from one point in space to another
@EaTaLLYouRFisH Yeah there are 37 octillion intelligent beings in this universe.
@@OrangeUtan1 Math is fun. It makes us believe in the whackadoodle! 😆
Oh no! Another one of these 'time' videos! I'll be feeling lonely, small, and insignificant in a corner within 29 min I guarentee it! Love, love...LOVE your work sir!
The brain is the most complex thing in the universe. There are only 7.53 billion human brains and you are one of them!
Alden D this is the interaction I’m here for
If I can't go back in time to undo everything what I did wrong and fix my mistakes in the past, then.. I'll be stuck dealing with people who hates me, being scammed and being put myself out of danger. I'm just sad and depressed that I wanted to undo everything what I did wrong. But they wouldn't believe that there's no going back. I've got very unhappy. 😞
Absolutely loving your documentaries, Very unique way of expanding on scientific concepts. Please keep up the great work! This one ended, reminding me of the movie "About Time". Time is definitely a gift not to be wasted.
Dark is a show that deals with a lot of these concepts, and is fantastic.
I was always in love with time and space and everything beyond it and all mysteries but after seeing your videos makes me want to see more and more keep the good work
Second video I watched from you. No idea why this channel eluded me in the past few years. You have a beautifully calming way of explaining and talking. Loving what I see so far :)
Thanks for your videos, they are great, informative and brought down to a level that most if not all viewers can understand. I'm just a layman (no scientific studies) but I've read and thought about these subjects for 40+ years and understood many concepts over the years (Einsteins special and general theories of relativity was an epiphany when I could mentally picture it in my head) but don't ask me about quantum physics, that's just so unintuitive that I feel like I'm falling whenever I try to seriously understand it's workings based on previous and current work.
I know the basic principles, from the split screen experiments to the uncertainty principle but to me those are just facts on a piece of paper and they don't tell me more than some of the effects we're seeing (which is where scientists usually start when they explore a certain physical phenomenon, working their way backwards to understand more and more). As far as I know, physicists don't really understand quantum physics on a deeper level, they just compare their calculations with the observations made and vice versa and reach the conclusion that a particular part of the theory is correct or wrong and move on from there without really grasping on a deeper level how and why it seems to act the way it does.
1. Even if I could travel back in time and change something to improve my current situation, when I travelled back into the future there would be another "me" that grew up and lived a different life. That would be a problem.
2. There are still an infinite (or near infinite) amount of knowledge that we have yet to discover. For instance, what is time? We have our anthropomorphic perception of it and we use it in calculations/theories based purely on it's apparent effects (like entropy). But what IS it? We don't know. We have yet to discover the very essence of gravity beyond it's effects on space-time and objects.
3. I WISH I could travel back in time and correct some serious issues but if that was possible it would lead to my first point. I would still be the same person with the same background while there would be a different "me" in the present. If I was transformed into the new "me" the instant I returned I would basically commit suicide since I would become the "new" me and the old me would simply cease to exist at that very moment.
4. Until we know a lot more about gravity (quantum or classical) and the deepest intricacies about time and space we won't have a definite answer to this question (and I don't know if we'll ever reach that level of understanding). We have a strong tendency to think about these things from a very human perspective based on our current limitations regarding imagination, the ability to transcend our anthropomorphic view on physics.. and then there's the issue with the physical laws and properties of the universe.
5. We may find loopholes/solutions/knowledge that surpass those limits and may be able to move back and forth in time as we like but in a way that we simply cannot even begin to imagine yet that not only avoids all the paradoxes but means something completely different from our current perspective. That's obviously pure speculation based on my understanding of how little we actually know about everything compared to how much there probably is to learn.
This is quickly becoming my favourite channel on UA-cam. You deserve millions of subscribers.
I am an immunologist but I will happily spend the rest of my life, as a student, in his research group...
Beautiful
Would also be hard to create a control of the specific year, date you want to go, and don't forget, past or future, if you time traveller are on Earth, our world is always moving fast through space, you may end up in cold, airless zero pressure, open space or inside a rocky planet or sun. actually the time traveller can be on any planet and die the same way.
I lost both my parents in less than a year of each other, both unexpectedly. This video has helped me so much in moving forward
I've been procrastinating on something and needed to hear that ending message. Thanks. Think I'll go do it now.
Did you do it?
@@wuckfar7819 I don't even remember lol. Probably.
if you've built a time machine, please save my girl :(
I believe in the multiple timeline paradox
Jesus the production value of your videos is fantastic. I can’t get enough of these. Seems like all those astronomy and cosmology courses I took decades ago are going to get a workout watching these lol
This guy's voice is the best to fall asleep to
This video reminds me of one of my all time favorite animations, Meet the Robinsons. The core theme of the animation was to keep moving forward and don't let the past hold you back but instead make the best of your remaining time. The use of time to change past events and not live in the moment was a huge part of the story for both the protagonist and antagonist. It was truly a masterpiece.
Now we're all part of the same temporal causality loop... ergo... our lives are altered.
I'm thrilled, every decision you have made in your life has brought you to read this comment.
My mind just melted wow.....this comment....you are woke!
My name is Ozymandias truth is, every decision we make and or made was already made before we did it, our future is already a written script, just think about it...
We can't change the past but it can change us.
Darwin Maisner beautifully put
christian babis ok
I can’t get enough of your videos! Can’t believe I’ve just stumbled upon them recently. IMO, you make the finest science documentaries that I’ve ever seen on UA-cam thus far. Keep em coming please!
Professor Kipping, I must say, I think you are perhaps one of the very few people on earth who can make a grown man cry using only the beauty of science and story telling combined. I am in utter tears after this video. It's been a few moths since I underwent a break up with my girlfriend of 5 years. I was completely convinced she was the one and that I would marry her soon and have children and watch them grow up and eventually grow old together. Sadly, my insecurities and, for lack of a better word, stupidity, lead me to make mistakes that would cause her pain and ultimately lead to our break up. Every single day since then I wish I could go back in time and stop myself from making those mistakes. To make myself realize how impossibly stupid I was being and to warn myself of the overwhelming regret and guilt and sadness I would feel as a consequence of my actions. Sadly this is just a dream like you said and for the longest time I felt hopeless and like my life was over but this video is the first thing that has given me a real sense of perspective. I may not be able to change the past, and I may have perhaps ruined the greatest thing to have ever happened to me, but time stops for no one and the future is full of uncertainty, and it is this uncertainty that gives me hope, no matter how tiny of a chance it may be, that perhaps I will learn to live with this regret and be able to forgive myself one day and love myself again. Thank you for that.
Parallel universes would be the best possible way I could come up with for traveling back in time, if we could somehow connect to them. That is what I believe dreams are...I've had dreams that have taken me back in time where there was a different outcome of a past event in my life.
I had somewhat of an out-of-body experience watching this great video.
This made me think of a phrase, an idea if you will. And this phrase is "your future self is watching you through his memories.." This was something beautiful to me! A kind of timetravel, without going anywhere. Thanks for the amazing video! I truly enjoyed it.
Somewhere in time is such a heartbreaking, beautiful movie. On so many levels. Highly recommended. I believe its one of the best movies ever made.
Very beautiful and moving video. I didn't get expect to get misty at the end of a technical discussion of time travel and causality.
Kudos to whoever did the editing, and Professor Kipling's presentation and narration is mesmerising as always. I love this channel.
Such a compelling way to teach science. I am glad Cool Worlds is here to expand the minds of the future generations. Teachers and professors should take note. Keep up the great work.
I love that you combine science with the heart so artfully.
I must say, finally I finished watching this video during the day. During the three previous attempts, where I tried to watch this video in the evening, I always fell asleep after 10 or 15 minutes. Your narration is waaay better than any meditation clips or videos!! It's really relaxing to watch and hear your video, which is also gently tipping my soul, my heart and mind indescribably.
Thanks for creating this channel, I really love it. I wish my dad is still alive to watch these videos. He was a teacher (physics) at middle school and he told me a lot of stories, how we (human) can explore the universe. The key to that is knowledge and our readiness to always learn. I miss him a lot..
Really glad to finish watching this video. Thanks again and I hope everything was ok with your thumb :)