Time Travel in Fiction Rundown
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- Опубліковано 4 тра 2024
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For ages I’ve been thinking about doing a video analyzing time travel in fiction and doing a comparison of different fictional time travels - some do use wormholes, some relativistic/faster than light travel with time dilation, some closed timelike curves, some have essentially “magic” or no consistent rules that make any sense, or TARDIS's, or whatever. This video is an explanation of how time travel functions in different popular movies, books, & shows - not how it works “under the hood", but how it causally affects the perspective of characters’ timelines (who has free will? can you change things by going back to the past or forwards into the future?). In particular, I explain Ender's Game, Planet of the Apes, Harry Potter and the Prisoner of Azkaban, Primer, Bill & Ted’s Excellent Adventure, Back to the Future, Groundhog Day, Looper, the video game “Braid”, and Lifeline.
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An entire video on time travel without using the word 'paradox'. Congratulations.
He talked about the grandfather paradox
That's probably because paradoxes aren't really interesting when you're analysing time travel like this video does. The video is about how time travel DOES work (within these fictional worlds), not about how it doesn't work. Often, time travel paradoxes as they exist in fiction are the result of mistakes by the author, not by the maybe inherently flawed nature of time travel.
Well he didn't touch on the terminator franchise so it should have been fairly easy for him to avoid mentioning paradoxes
Not even the paradox Brown and Who.
The Harry Potter example is a paradox in and of itself. If they cant be saved without intervention from their future selves, how did the first version of themselves get past that moment without the help?
Me: “So, Doctor Who, which time travel mechanism will you use?”
Doctor Who: “Yes.”
Basically yup they do multiple
He use the same as Harry Potter I think
ALL of them!
The doctor who timeline is scribble
@@aztecgodhuzluiospd1033 Another word for a wibbly, wobbly, timey wimey thing? I like the idea of some fixed points, some fluid and you can tell the difference because that's how things are but, on the whole after 66 years they've tried pretty much everything and expectations have changed. John Pertwee demonstrating his vast intelligence by drawing circuit diagrams (and reversing the polarity of the neutron field) now seems very '70s.
I'm still waiting for the companion who's never seen a time machine before so just assumes that they're _all_ bigger on the inside.
the time machine is pretty good too! it was built for the purpose of saving a loved one but the inventor can never save her from dying because her death is what led him to build the machine to begin with, so he can't be there if she doesn't die
Literally the only good thing about that pile of crap remake, was that single bit of consistency.
@@gerardosaenz9496 While time travel would seem to be a good idea in some instances to escape, there is the chance that you are the person who is important to a certain event, and as such you not being there could be disasterous to history.
@@gerardosaenz9496 And think if he had the same kind of thoughts of time travel, and had went through with them, that important person would not have been there when people needed him. You never know when you will be the important person in the timeline.
that's how it works in my head
That’s a paradox
It's a shame that the Jeremy Bearimy didn't make it in here. I'd like to see him try to explain that.
It’s pretty simple. The dot is Tuesdays and July.
@@theawesomewerewolf5084 and sometimes it's never
@@thewolf2213 and sometimes it breaks people
You just got me to convince myself to rewatch The Good Place again, good job
i smiled when I saw this 😂
I wish there was a second part of this, with Avengers Endgame, Tenet, Dark, and Umbrella Academy included.
I look forward to endgame
Don’t forget Future man, that shit is crazy
@@dr37295 Haven't heard about that one, where can you watch it? And now that I think about it... Quantum Leap is another good option.
Tenet is basically primer+harry potter going off this video
@SAMeeR XENON' lol
"Harry potter time travel is perfect because nothing is changed"
Cursed Child: "Allow me to introduce myself"
What happened in that movie? I don't remeber what happened...
@@aku3119 Well in cursed child the play they get a special time turner that works like a normal time machine where you can go very far back and change things, and the whole plot is kinda focused on that.
@@leoseek4395 Thanks bro
No! How dare you?! Go stand in the corner and think about what you did!
Does no one remember that in the prisoner of askaban book that it was explained that the past could be changed but with disastrous results? And before anyone says that the fact that events were predetermined showed that the past could never be changed, it's not like there haven't been other forms of fiction where you could both change the past and not.
I think Steins'Gate is really worth talking about as it has an interesting concept of how time travelling works in their timelines.
Operation Valhalla continues. The choices of Steins Gate spread beyond. Hououin Kyouma rises like a phoenix from the ashes. This, this is the way. Good work, fellow seeker of knowledge.
El. Psy. Kongroo.
Also zero escape
@@thegamersclub9326 message recieved. El Psy Kongroo
I was going to comment this. But it may effect our quest toward the steins;gate.
El. Spy Kongroo
The anime is great. But for the love of god, stay away from the visual novel.
I really liked the arrow charts as a visualization tool. I also realized that Doctor Who's chart would essentially be a scribble to our eyes.
a big ball of wibbly-wobbly timey-wimey stuff
Doctor is very occasionally logically consistent, with future selves being already present with selves, but mostly each jump alters the timeline and creates a new path. I think the new conceit is that the Doctor, and the TARDIS start from a place outside of the timeline, meaning there should be no possible for the Doctor to influence their own timeline, except when they do. The doctor's companions get imbued with a quasi-timeless state while traveling with the Doctor
Cursed child isn’t accepted as:
a) an actual Harry Potter book
b) a well written book
c) consistent with prisoner of Azkaban time turner logic
“Cursed child sucks” -literally everyone
exactly!
D) All of the above
It was never trying to be a book. Its a *stageplay* its a live show and thats the script. Doesnt fix the dumb plot, but its not a boom and it isnt meant to be
dude, i lowkey liked the book. i haven't read it in a long time, but i just remember i liked it
i watched the play and i agree the plot was kinda bad but the play itself had great special effects and really good actors!!
Can’t wait to see “Time Travel in Non-Fiction”
Did they mention endgame?
Here i’ll spoil it for you, it goes like this ↺
Its rewind time
Damn these stupid 69-based culture humans know nothing about time travel, huh?
when you reload the page
One of my favorite examples of time travel, and in my opinion the best example of time travel, comes from Steins;Gate.
There are three methods of time travel in Steins;Gate: D-Mail, Time Leaping, and physical time travel.
With a D-Mail, you send a text message through time, which has the possibility of changing the past. If the change isn't big enough, then functionally nothing will change (for instance, if the thing you tell someone to do is minor or if they just ignore the text), but if it's big enough, you can change a lot. This is a large part of the plot, the characters sending text messages to the past and it enacts huge changes. For instance, in the story, someone plans to leave, and you send a D-Mail to them telling them to stay, and they will which causes massive changes. Nobody remembers anything from a D-Mail except for the protagonist Okabe.
With Time Leaping, you mentally jump back into your past body from the future. You can only jump back 72 hours, and obviously because of this restriction you can only jump back three days before the machine was created. The person who uses the machine remembers everything, and the timeline changes just by virtue of your future knowledge. If someone other than Okabe were to use it, however, Okabe wouldn't notice any timeline change under normal circumstances, unless whoever it was did something so big that it forced the timeline to change. But time leaping itself wouldn't cause the timeline to change on its own, it's what the Leaper does with the future information that would cause it to change,
With physical time travel, it's exactly what it sounds like. You travel back with your physical body. No changes are enacted on the timeline because the timeline already takes into account the fact that you have/will travel back in time, like Harry Potter.
All of this revolves around the Worldline system. Every change made to the timeline takes them to a different Worldline. These Worldlines are shown on a little device that shows you exactly what Worldline you're in, but for the most part only the numbers after the decimal point change. To change the ones place of the device, that requires an absolutely massive change, one large enough to change the entire trajectory of the world. However, the worldlines revolve around several points that happen no matter what. No matter what you change, no matter how you turn back time, there are several points in history that will always happen no matter what. The main plot of the story is that one of the characters is fated to die by the worldline, and Okabe's attempts to save this person's life in the completely fucked up timeline that he inadvertently made, requiring him to revert every change he made in the story. Fate literally contrives this persons death. Even if Okabe does everything perfectly and gets this person in a position where they cannot possibly die even by mistake, they'll just drop dead with no discernable reason. It's SUCH a good example of time travel, and it manages to prevent paradoxes perfectly by just saying "It's another Worldline!".
This sounds super interesting!! I’ve never watched an anime before but this seems really cool and I’m considering checking it out
@@katie-allen It's also a visual novel, and I think the visual novel is even better
@@aneonfoxtribute ooh okay! I’ll see if Libby has it, thanks!
@@katie-allen Not a novel, a visual novel. It's a kind of game that is pretty much just a book, but it has voice acting and music and stuff like that.
TBH the time travel concepts of Steins;Gate are not that super unique. They are widely used rules.
But the way Steins;gate sticks with their rules and their skills in explaining it though the story makes it one of the best shows I have seen
To me back to the future is as logical as harry potter time travel, you have to stop thinking about it like multiple timelines but rather as a single timeline, the timeline goes as followed, the main character is born, years pass, mc goes back in time and does things, mc goes back to the future. He didnt change anything, he just followed the timeline
I partially agree with you but in Back to the Future 2, he has to save the timeline when biff has taken over
@@rohe1790 that still falls into one timeline, but tbh idk, my point might be really bad considering in that case everyone has a different timeline and there is no universal timeline
@@kazakhstanobamarunesports1350 the wife of time traveler has a universal timeline
I disagree. At the start of the film, we see Twin Pine Mall. When he goes back to 1955, the Delorean hits a pine tree. When he returns to the future, the mall is now Lone Pine Mall. Also his parents are cool when they were boring before. So Marty has changed the future, hence it's not like Azkaban at all.
@@kazakhstanobamarunesports1350 No that's an alternate time line There's a minimum of 3 there's the twin pine time line where Marty's parents are miserable Lone Pine where they're happy and then there's h*** Valley were beef runs everything
*Alarm rings: 7am*
*Snooze the alarm*
2 minutes later
*Looks at watch*
*11am*
I am a time traveller
My roommate's alarm rang exactly the moment I read this comment.
@@kyanos-asteras epic😂😂
Yup. this is how Lost my first, and 3rd jobs!
and also late for work.
More like a time waster
DARK entered the room.
DARK destroyed everything.
DARK left the room.
DARK will return on June 27th.
I was looking for someone to mention Dark 😅😂
DARK will return every 33 years
Exactly
Dark returns tomorrow
...that’s tomorrow.
The game Outer Wilds has probably my favourite depiction of time travel ive seen recently (huge spoilers, go play the game first)
Similarly to Groundhog Day, the main character seemingly relives the exact same 22 minutes over and over again, retaining all their memories of past loops. We find out later in the game that there is effectively a time machine linked to the main characters brain that is repeatedly sending our own memories back in time 22 minutes to their past self, creating the illusion of a time loop where in reality they have consious memories of things they have not done yet.
I love how it makes your death canon because you didn't die yet and you never will cause you know not to do that
My favorite time travel is from The Five Kingdoms series by Brandon Mull. After traveling back in time, you’ll find that the thing you thought you’d changed had actually always happened. In other words, it’s like Harry Potter’s time travel, except with one key distinction: you cannot travel to a time when you already existed, meaning that you can’t travel to the same time twice and can’t travel to any time that you were already born.
And so came "The Cursed Child" which ruined everything
thats why i don't consider it canon
@@lilil9752 It never was, and never will be
@Donald Deng the story is bad, very bad
Prisoner Azkaban doesn’t make sense either, it falls for the grandfather paradox, which is the most obvious trap.
Primer is probably the most logically consistent of the ones he mentioned.
@@jandcstopmotion7774 it does not fall for the grandfather paradox since in cannon you cant travel further than 5 hours to the past.
It's also equally interesting in the Harry Potter type time travel, that the time traveler effectively has no free will over whether they will commit to the time travel or not. It is their fate no matter their conscious thoughts, they will perform the action. And that also ties in well with the HP universe's use of prophecies, which also imply that free will to a certain extend is blurred. Potentially free will exists, but all thoughts and decisions will still lead to the same outcome - like throwing a stick in a stream - Its path down the stream may be random, but it is a certainty that it will flow down through it one way or another. It is confined chaos.
The time travel aspect of Harry Potter really annoyed me, but mostly because they literally never use it again.
Its an infinite loop of Older Harry's saving Younger Harry's who then become Older Harry's saving . . . etc.
@@sonspork They could have used it to save Cedric lol.
@@sonspork The infinite loop of harry is impossible. The story it is actually impossible because it is the same harry. original harry has to travel back before he is even in danger in which case there would not have even been a harry there to be in danger because he traveled back already. If not then there is no original harry to travel back to save himself because he is already dead.
The harry potter one makes the least sense. in order to go back in time, you need to first reach that time. if harry is killed before he reaches it, then he cant go back. either he survives regardless or thats not him
You should watch Sisyphus, one of the most well done time travel stories I've ever watched. Time travel stories are often so lazily written, but this one ties everything together. It is at times absurd (the male lead is cartoonishly smart), but over all it is damned good.
It was really good, and then had the most ridiculously inconsistent and unsatisfying ending that resolved nothing and killed any desire to revisit it, talk about it, or recommend it to other people…
… well, for me, at least.
@@finndelimatamay1983I thought the ending of Sisyphus was perfect. Whether it is a tragedy or not is a matter of perspective, but it's definitely not a simple good triumphs over evil story, so some will fine it unsatisfying for that reason.
I found the ending consistent though. Things kept changing, over and over, each time things were a bit different. The end of the show is everything coming around full circle. There is no end, per se. Though some of the show was set in a church, it felt more like an allegory for samsara than anything else.
This is the exact reason why I (unlike a lot of people) prefer the 1st terminator to the 2nd one. The first one is the same style as Harry Potter while the second one introduces future changing time travel, which always creates some kind of shit...
"Hold My Mikkel"
-DARK
While I watch season 3 lol
HAHAHAHA. Yesss.
Yasssss! Lol
LMAO HAHAHHAHAHAHAHHAHAHAHHA
Groundhog Day was supposed to take about 30yrs of reliving the same day... It's no wonder the character tried to kill himself a few times
Sounds like a nightmare
"Groundhog Day was supposed to take about 30yrs of reliving the same day"
More than that...MUCH more.
A blogger worked out at least that long, but according to the original story, he was supposed to be stuck for 10,000 years.
@@MrGreensweightHist thats horrible.
@@MrGreensweightHist Oh geez. That might make him clinically insane, unless the time loop keeps him from going crazy somehow.
@@cilantrolime Heck, even a moth or two and when you get out you'll be PTSD ridden wondering if tomorrow will be tomorrow for the rest of your life, I would think.
Not to mention things like when he drove off the cliff...what if that had actually been the first day after no longer being trapped?
I enjoyed SO much the trivia, freddiew was the first channel that genuinely blew my mind for their effects.
I am so proud to see all the Steins;Gate suggestions. I could totally agree that this is the best show about time travel out there
Same; every visit I make I see more mentions of it. El Psy Kongroo my good fellow.
minutephysics: Harry Potter time travel makes sense!
The Cursed Child: Hold my butterbeer
The cursed child does not exist
Depends on the timeline
We do not accept the cursed child in this household
I will NOT allow the time to be changed in Harry Potter!!..........unlesssssss your erasing the cursed child.
CURSED CHILD NOT RELEVANT
Everyone else is talking about different forms of time travel in media and I'm just here to point out he drew a tail on the apes at 1:00
how is this comment between a comment of 886 and 2.1k likes.
it should be even higher
Harrys hair is gay - girl who wrote Harry potter
@@BlackVogel1 ...
what?
@@anshats8947 Indeed
We he isn’t a biologist after all
If there was a second part it should include the Killer Queen Bites the Dust paradox
One great example of time travel in fiction I really like is The Fifty Year Night from Hilda, where changes in the past doesn't create new timelines but rather change the current and only one proceeded by a time worm chasing any leftover from the "original" timeline, including the original characters who did time travel so the "new timeline" can exist without paradoxes such as two of the same person. It's such a chaotic and kinda logical/magical way to see time travel and I love it.
[paraphrasing] “in Harry Potter time travel, what you do doesn’t change the timeline, it just results in what already happened”
*cries in Cursed Child*
Totally agree. Ruined the most "realistic" time travel.
Well i think that called the "Predestination Paradox"
Cursed Child is just mediocre fanfiction made into a play somehow. I like a few things about it, such as the close bond between Albus and Scorpius, but so many logistical things don't make sense and so many pre-established rules were broken. (Why would Voldy have a kid if he thought he was immortal and didn't want to share his power? And obviously the time travel mechanics were broken.)
Cursed Child isn't canon. Don't @ me.
Nahuel, you will never reach peace.
I'm glad you touched on how cool the time travel in Prisoner of Azkaban is. It really seems like the only logical way it could work. You can't go back in time to kill your grandfather, because you didn't. Although that's hard to accept.
There’s another book series I like called The Medoran Chronicles by Lynette Noni in which the main character travels centuries back in time only to discover that her doing so is what caused a whole load of events that happened in the past (though this happens in I think the third book). I recommend giving it a read
This kind of deterministic time travel can also be called the bootstrap paradox
@@qunni3604 can you really expect a story that’s rife with cliches and utilises such a bullshit soft magic system to be logical
Only thing about how this “actually” works is that it breaks law of conservation of mass/energy, so if time travel were possible in our world it would likely not look like this
I really don't like it because you have to imagine a "first loop" that triggers the set in stone events, but harry potter just doesn't do that
It also shows how dumb the cursed child it
Clicked on this video only because primer was in the thumbnail. INCREDIBLE movie; far too many people have not seen it. Nice video too!
I live this video you made. Watch it all the time! Please keep up the good work.
Steins;Gate has the most creative version of time travel I've ever seen in a fictional setting and I hope you analyze it sometime in the future!
Yup.
The concept of simply parallel universes; your events have 0 consequence on other timelines, so you can be instantiated within a new timeline. But not only that but the fact that causality is dependant on outcomes rather than the individual events; if 2 events cause the same outcome then the rest of causality remains the same.
Which is really disappointing since they mentioned all these time travel movies, some my grandfather may have had in his time but not one of the highest rated time travel anime, SG which came like not too long ago.
El psy congroo
Eventually they will analyze it sometime in the past and this very video will have Steins;Gate
Exactly I was surprised they left it out!
Logical consistency in Harry Potter: *exists*
Cursed Child: I’m about to end this man’s whole career
Actually, the harry potter doesn't have logical consistency.
It's sort of a reverse grandfather paradox. How can his future self save his past self? If he wasn't there to save himself, he would have been dead, and if he was dead, he wouldn't have been able to save himself in the future.
It is within the same timeline though, so, at least it's chronologically consistent, but harry potter has magic, so, I guess there isn't much point in trying to think about logic.
Glow Berth check out Harry Potter and Methods of Rationality - there's pretty good explanation on how HP universe might work (also the book is awesome by itself)
@@SometimesHappy If you had beings could control the quantum world, and they used wands as an antenna of sorts (to focus their power), it could exist as it does in harry potter.
I was more thinking about the time travel thing, not so much with the magic, as the time travel aspect presents a sort of paradox.
OMG yes I was thinking the exact same thing.
@@joemann7971 It is a circle. His future self ALWAYS saved his past self. There was always that loop in the time line.
I wish you would’ve covered time travel in steins gate. In this anime there are infinitely existing timelines and when you time travel essentially you are sending your consciousness into your body of whatever timeline you go to. It is a different but identical universe that happens to be at a different point in time.
Man, every time I look at the comments section, more people have mentioned S;G. El Psy Kongroo my good fellow.
I’ve been thinking about this exact topic for years, and I’ve finally found the video that puts it into action!
The real time travel is when you use Control Z, then type something, only to press redo.
I See, You are a man of culture. I will tip my hat in respect
jamshid
That’s...
the joke...
ua-cam.com/video/PkKAHroBTtA/v-deo.html HOW TO ACTUALLY TIME TRAVEL!!!
endless loop,huh?
The problem with time travel is that space is associated with time. For example, the solar system is going around the Milky Way galaxy at 1 million miles per hour, so what happened an hour ago took place a million miles away, and what happened one day ago took place 24 million miles away, etc....So if you travelled backwards in time you would also have to travel to the exact same point in space.
yup. Now since time and gravitational effects are linked, it could not be difficult to imagine that the time travel on earth involve it gravitational effect toward the target, and thus can prevent you from teleporting in the void
There's a short story in Charlie Jane Anders book "Even Greater Mistakes" that deals with this exact issue! They send things forward in time and they move to different places instead. It's pretty awesome, as are the rest of the stories in the book.
woah there bud, pls dont break relativity
I like to think that in all of these scenarios, that's something that's accounted for. Especially since they're all created by some super genious so I don't think that's something they'd ever overlook. Plus, the actual time travelling is the interesting part, not space travelling.
I believe they addressed this in the TV show 7 Days. I think while the guy was traveling back in time, he had to manage a navigational system that would track the Earth back to where it was at the point he wanted to arrive. If he missed, he could wind up inside the earth, or out in space.
Loved the video. I wish Predestination time travel were included in this video. I was so confused the first time I watched it trying to make sense of it haha
I like the idea that there's multiple layers of time with smaller layers being easier to travel through. I haven't seen it used anywhere, just something that I came up with.
Meanwhile Tenet:
One straight line
It's kind of a mix between Primer and Harry Potter i guess (unless 10 times more complicated)
@@jeanlaurioz9777 type shit
@@brendaellis1320 Wrong: Cowboy shit
Actually Aha has it correct, it's one straight line, you are just either going forwards or backwards on that line. I want Henry R. to update this, or at least have a companion video.
it's the exact intersection of Primer and Prisoner of Azkaban
the "no free will" point about Harry Potter is exemplified perfectly in the movie when, without any explanation or discussion, Hermione suddenly grabs the pebbles that she throws through the window of Hagrid's house. While it could be said that she would've reasoned out a solution to cause their past selves to leave the house regardless, it could alternatively be said that she had that "Eureka moment" BECAUSE she had already seen the results of it in her personal history (the vase breaking). It's utterly brilliant, and surprisingly, it's also completely realistic.
According to the Novikov self-consistency principle (as described by Wikipedia; academic discretion is advised) "if an event exists that would cause a paradox or any "change" to the past whatsoever, then the probability of that event is zero". In other words, you travel to the past because you traveled to the past and you do what you already did, and no more (nor less)
It's less "no free will" and more "deterministic, single-timeline time travel." Hermione still decides to throw the pebbles- but she does so because she's worked out in the moment that this is what saves her in the past, and anyone in Hermione's particular set of circumstances at that moment would have done the same. Likewise with Harry having the confidence to cast a fiendishly difficult spell because he *already knows he did it.*
Except the vase/pot breaks into different shape/size pieces the two times we see it break. 🙊
However the problem with this is it creates the predestination or bootstrap paradox
@@ari54x It's not just no free will, it's no will at all. No conscious. In the movies, everything happened already. In the present the stone has to fly perfectly into the vase. Someone with free will or even "non-deterministic" abilities could have missed. But if you think about that... you will notice that when things have already happened, not just the person going back in time has no free will, also the person in the present has no free will, since the person will have to use the time machine at the perfect time in the future and everything must go according to plan. Actually, no one around has free will... because if they acted differently, just a tiny bit, maybe things would go otherwise and we got a paradox.
Then there is the problem of: Who decided that he or she wants to use the time machine? It's already happened, they have to use it. So basically, someone in the future must have decided that. Here we arrive at the bootstrap problem. So it must be "fate". Fate decides that something happens. Again, no free will here, folks.
This is a major problem.
On the last part I'm not sure (I don't know the full movie), but from what I've read, it's also not really single-timeline. It's infinite timelines. When Hermione throws the stone, they are the future, but there is again another version, that is the past, which is the future to come. After them, there has to be another version, which is the future to come and so on.
@Klog GM none of this is a problem from a deterministic point of view, the loop happens exactly the same way whether you're on the pre-time travel part of it or the post-travel one. Harry casts his spell because his memory of being saved and realization he's the one who resembles his father makes him confident enough to do it, because that is the best choice a person with his temperament, memories, and body would make under those circumstances. The 'loop' is pulled off because they were always inclined to make the right choices to pull it off, not because they coincidentally choose the same things every time. This is exactly how we would expect time travel without parallel dimensions to work, in a deterministic universe. (which afaik all evidence points to our actual universe being) A person inclined to be discovered by returning late or to die after travelling back in time wouldn't make a loop where their 'future' self replaces the past self. They'd just die after rewinding, instead.
This is still one of my favorite videos on the internet
I have watched it at least once a year for the last three
The internally consistent, Harry Potter kind of time travel is the one I’ve come across most in literature: both Artemis Fowl and a short story of Ted Chiang‘s use it. I love it! If you’re going back in time, you already did.
-Defining “Time Machine”-
Teacher : What is a time machine?
Student 1 : A machine for traveling back in time!
Student 2 : ...a clock.
Future "Genius" Student: "Time Masheen" is a ride at an amusement park, duh.
Yes. There's "time machines," and "time transports."
To stop the time, you need an infinite energy, but it's theoricly possible.
@@ggldmrd5583 Just turn the eight sideways.
@@ggldmrd5583 Not infinite, actually. Just enough mass in the small enough volume =)
The timetravel perspective in Prisoner of Azkaban rocked my world, I couldn't understand why more people weren't talking about it at the time.
Check out Steins;Gate, a Japanese Anime, which, in my opinion, provides a very different method of time travel, by adding another dimension to it altogether (No spoilers here).
Other than that, it maintains causality, and the act of time travel along with the flow of the present itself, creates the future, hence, time travel becomes necessary to preserve the sequence of events, just like in Harry Potter 3.
Definitely worth watching.
@@mia-paris5533 it's interesting because it underscores the whole problem with time travel. If at point A your partner dies, you decide, I'm going to go back in time to point A and prevent that from happening. But there's a problem. The thing that caused you to go back in time was your partners death. If you go back in time and fix it, now the event that caused you to go back in time... never happened, because you've fixed it. You understand?
Prisoner of Azkaban leaves it as a paradox. Did buckbeak die the first time they lived through the event when the "thud" is heard of the axe? Or was that the executioner throwing down his axe in frustration? Harry and Hermione certainly assumed buckbeak had died, which is why they went back in time to fix it. But did he really die? Or had that event been fixed by their future selves already as they lived through it the first time? It's a way cool interpretation of backwards timetravel and excellent writing.
It's stupid, imo. It's a paradoxical situation. In order to be able to travel back in time to save yourself, you can't have depended on yourself to save you. You have to get out of the situation first in order to get to the point where you could travel in time. Like, you can't depend on your future self to save you... If you don't have a future. Basically, since Harry and company couldn't get out of that situation without their future selves intervening, then they can't get to the time traveling method in the first place on their own. Therefore, they should all have died. A fixed time loop is one thing, but you can't just avert your own death in the past! Someone else has to do it because you won't be able to go back in time and save yourself! It's downright moronic, tbh.
@@juggling8557 No, Buckbeak did not die, ever, in any timeline (because there is only one). A detail of the scenario proves it : Dumbledore knows that Buckbeak escaped, that's why he asks Hermione to use the time turner.
@@TheMadwomen Ya any kind of time travel back in time is paradoxical. But it's still cool.
Steins gate and donnie darko are probably some of the most interesting pop-media timetravel options to discuss.
Donnie darko uses a tangent universe to travel time, effectively you travel in sace and/or time, but there needs to be a universe that is locally tangent in space or time.
And steins gate opens the flood gates into the concept of converging and diverging time lines, relying on the similarity requirement to make time travel possible. Effectively saying time is constantly moving forward but there are infinite universes. Similar timelines are jumpable, but universes have become samples from a "random field" effectively allowing both determinism to exist from a single point of reference (such as the main character) but from the view of all timelines it is completely stochastic.
Both are extremely interesting concepts, and rely on physics to a lesser degree than enders game, but way more than any other film/book/show i have seen so far.
Frequency is awesome, include it if you ever do a part 2 please. I don't even know if it falls under one of the other categories, but its so cool I'd love to hear it shouted out.
The major logical consistency problem in Prisoner of Askaban is the idea of responsible adults giving a 14 year-old an all-powerful time machine just so she could attend 16 hours of classes a day and then never using it again, no matter how handy it would have been to save lives and prevent horrific disasters later in the series.
U see the time turner has a rule what ever happens always happened that way like when harry is hurt by the demeantors the time travelling harry always saved the harry that hasn't time travelled yet then time traveling harry returned to his own time.
Well, technically, the Ministry couldn't have changed any of the past events in the series. Since time travel in Harry Potter can't change the past, if Voldemort had already survived up to the point where he was considered a threat, trying to change the past to kill him off would be useless, since the events that would have led to him surviving would already be determined.
Its kinda covered in the bit where they go through the ministry of magic time room, they only have so much of that sand, and presumably they use it exceedingly sparingly.
Likely they *were* doing all sorts of stuff to change the "past" but nobody ever knew because that was already the world they lived in, where all that stuff already happened, all the stuff they made sure happened they just made sure to make sure that they went to make sure it happened.
Like, voldemort didnt win. How many pin dancing angels were involved in making sure that happened? the world may never know, because it happens off screen, and probably for the best too.
The series also has prophecy, so in some sense... theyre not constrained to retroactive time manipulation, they can manipulate time proactively as well, they just are very careful about what they do. We may never know how many times they sat in a blank room thinking up ideas and then slapping a button to see what the prophecy machine says the future would be, then going "man, that was a dumb idea, we all get nuked!" and then think up a different idea. I mean, with time turner consistent time travel, any time they actually needed advice from the future, one of them could just spontaneously appear and give them a note with the details, and problem solved, they then know that they have to go back and give themselves a note that its a dumb idea, regardless of if the dumb idea even happens... obviously if they tell themselves its a dumb idea its a dumb idea. I realize thats a bit circular but... thats how its always going to be when we deeply analyze unlimited time travel. Bootstrap paradoxes everywhere.
Despite the fact that the ministry of magic is portrayed to the child audience as a bumbling pile of adult idiots manipulated by evil, there is far more politics and competence there than we ever see, simply because they are off screen and we are unaware of their actions.
Also, dont forget in that same lab they casually have like... a gate to death? a passage to the literal afterlife, where all the non haunting ghosts hang out? i mean, who knows how many virtual war criminals they just yeeted through that thing, huh? They had time, space, death, i forget what the others were, but they had so many ancient magical artifacts down there that it is very likely stuff happened off screen we never knew about. Probably for the best.
Another weird thing, shouldn't Hermione age when she uses the time-turner, I mean, she adds around 2 extra hours to her life each day. So she's older than we THINK she is...
@@superluigidummy Yes, her experienced time is higher, shes older by however many dozen hours she lived.
Stein's Gate has one of the most interesting time-travel concepts.
It honestly has the best time travel plot of all time. Though I had to rewatch both the original and zero twice to fully understand.
Ahh i see you are man of culture as well
Literally the best one.
Ah, it is the will of Steins Gate that I must rewatch the series again...
It's more than just a time travel show....
wow so i'm currently writng afiction which deals with time travel a little bit and i had to come up with a "fictional theory" for time travel and this video really helpedme to understand the different factos and rules that need to be established in order for it to make a difference to the story. Thank you so much!!
What I liked about the Harry Potter time travel was the fact that you got to see what was causing all these events, truths behind scenarios. Of course it's a literal proof of fate. That there's nothing you can do to fix a past mistake because it's destined to occur. It makes sense, and is easy to comprehend.
The issue I have with this interpretation is that it kinda forces the assumption of "nobody has free will, everything is predetermined", which is in my opinion not a good framework for telling interesting stories.
@@doomse150That's true, but it's a very realistic depiction of how time travel would work. Assuming we don't go into some alternate timeline, things happen the way that they happened and the time travel is the reason why things happened in such a way. That doesn't mean to say that there is no free will, rather that things can cause themselves as a result of time travel and that the reason why things can't change is not due to a lack of free will, but rather that even when time travel occurs what happened happened, even if due to the time travel it is yet to happen.
I love how this gets recommended to me after watching Endgame.
Me too!
D Death Why? Does Endgame have time travel in it?
@Christopher Nies Probably shouldn't ask if you haven't seen Endgame
@@iMasterchris Since you just needed to comment that. Yes it does
Justin Hall stfu
Life is Strange has an interesting time travel mechanic too. The main character, Max, can reverse time yet she stays in the exact place she just was while the world around her goes back to how it was. For instance, in one of the scenes, she and Chloe are breaking into the principals office and trigger the alarm, Max rewinds time to when Chloe was still outside but Max was still in the office.
isnt this the harry potter time travel ??
@@katinthehat7655 it’s similar, but I’m HP the present and past exist at the same time and that’s why hermione and Harry have to hide from themselves or else some time stuff will fuck up Ig 🤷🏻♀️
Except that's not how it works in the opening level 😂
@@verrufen2642Exactly, it's a cool concept but it's filled with plot holes. Another instance is when Max and Chloe want to steal the keys to Frank's van, but the keys don't stay in Max's pockets if she time travels after getting them for some reason
@@shadycactus7896 Or just the whole issue about bystanders: I mean, if she teleports by time travel, and someone watches her during that time, wouldn't they just see her suddenly teleport and be somewhere else?
Still good though since it serves the story and the overall theme, but I was still wondering that, especially during the End of World party where Max could get behind an object by moving it, moving past and rewinding, while people could witness her standing in front of an object and suddenly being behind it.
Nice video! It really clears up the different versions of time travel!
Some really fun scifi work in the fact that the self-consistency demand itself gives you great power.
Say you need to guess a decryption key. Make a time machine and go back and tell yourself the guess was wrong if it was...then only consistent solution is the right guess (or something going weird and wrong so better be sure there is a correct answer).
My favorite kind of time travel is primer, bc it’s the most realistic imo. Time travel would get messy and horrible if it were to ever exist
True, and its definitely not just a single person who will do time travel right?
@Tempest idk. I don't believe time travel to the past btw:). Even with alt timeline, the alt timeline of our timeline *will still* time travel, and it will create infinite timeline.
@Tempest you literally tagged me
It's the most confusing and yet the most realistic movie based on time travel, that's why it tops the chart for me
Time travel really isn’t realistic tho. You can’t really go that way. Time travelling to the past is physically impossible in real life. The only thing that makes time travelling “realistic” in any fiction, is that it is consistent troughout the entire story
I personally love the time travel mechanics of Homestuck. It follows the self-consistent loop principle to such a degree, that free will is _theoretically_ preserved, but deviations from the basically predetermined actions result in a branching of the time line and the new branch subsequently becoming 'doomed'. This means that the extremely intricate web of interwoven time loops which in the Alpha time line resulted in the creation of the universe and these loops is disrupted so that it _doesn't_ result in its own existence. So the doomed branch gradually fades away, in almost every case accompanied by everything going wrong and everyone dying one way or another until reality itself dies.
Of course, this gets wildly more complicated as soon as alternate universes and other shenanigans come into the mix, but that is the gist of it.
Grzzlwmpf
The definition of Homestuck: Shenannigans.
Woah that's cool as. So it's bacially like string theory, but every universe which made the 'wrong' choice is eventually destroyed?
Branone Exactly! What's also interesting, is that it really is 'true' branching, in that you can jump from a doomed timeline back into the alpha before that branch. This happens a few times and is critical for the Alpha timeline, since the changes introduced by the influence of the doomed branch are actually required for the Alpha to exist
Yo fellow homestucks
In my opinion, Bill & Ted's style of time travel is identical to Harry Poter's style where the "Time traveling clone" has the same past experience as the original one.
Also, I'd like to reference the "Johnny Maxwell" book series where each instance you travel, you can change the way everything works.
Agree on Bill and Ted being the same as Harry Potter time travel.
I totally didn’t expect to see corridor crew here, 5 years ago!
Now that moment is time travel-esque
This thing needs an update that features Steins;Gate and Dark.
Steins Gate is 9 years old.
Dark is much like Harry Potter. Except there are 2 worlds and an origin world and lot of confusing family trees. And who is mother of whom and who is great great great great great grandfather of himself. xD
@@raghavjajoo why the spoilers haha
you should play the zero escape series xD
Endgame too although it's time travel is somewhat related to back to the Future
This video seems to be getting a bit more attention all of a sudden...
_I wonder why?_
cough cough *end-* cough *-game*
@@geoo-bl6im *_WHAT? REALLY? I HAD NO IDEA_*
Nihils are you gay or european
@@HouseholdWheel lmao and you did that with italics and everything
Keep videos like this comming!
The Harry Potter form of internally consistent time travel might appear the most logically neat, but it somewhat ignores the completely illogical inconsistency when viewed from outside the time loop, the famous bootstrap paradox popularised by that episode of Capaldi's Doctor Who (Who write Beethoven's symphonies?)
It creates a series of events that, logically, have no instigating moment, no 'start', a perfect loop with no beginning or end. Harry went back in time and ends up saving himself from the dementors because he saw his future self do so. The Harry that he saved will then go on to fill his role while he moves on in the timeline, and so on and so forth, eternally. But in this scenario there could never have been a 'first' Harry to go back in time, because without him going back to save himself, he would have received the dementor's kiss and been unable to.
So while perhaps the most logically elegant in regards to not dealing with branching timelines, it is also one of the most infeasible forms of time travel, as it is a form of time travel that could never 'begin'.
Exactly! I always disliked the Harry Potter time travel system because of this! Also the time travel system implies an oscillating system, as in a system that repeats itself, where every single atom in the whole world must be in the EXACT same spot with the exact same speed at the time of travel, which could just never happen on a macroscopic scale. Things in real life above the size of individual particals are too chaotic to oscillate like that in real life outside of microscopic objects. Like even if the time travel did start, it could never settle. It basically requires a god to have crafted the universe specifically with this exact time travel happening in specific places, which might be why it's so appealing narratively because the writer basically can act as this god to create a perfect scenario.
Yes! This si my least favorite form of time travel, for exactly this reason!
Well, it’ll be interesting to see an update version of this...
@ALPHA ok, but he still could explain
@ALPHA Can you stop saying this on every damn comment? Jesus...
ALPHA god why do you make our fan base look so retarded like fucking get a life
add explanation of Coherence 2013 would be great too
@@soupthought Lmao got some salty MCU fanboys that can't handle the truth huh? Y'all are a constant source of entertainment at this point.
"There are 2 types of time travel"
Steins gate "why not both"
I watched first 3 episode and understood nothing... Should i continue?
been wanting to get into it, Is it as good as I've heard?
@@mahdinoor7236 Definitely yes. The first half can seem boring and cliché, but when you get past that it gets so engaging...
@@mahdinoor7236 Yes! I was confused for the first 8 episodes but after the 9th, I got so hooked that I ended up watching the rest in one day.
@@mahdinoor7236 Yes. It is a bit slow to start but it'll be worth it later when everything pays off and all your questions are answered.
Honestly I was really into time travel and had a pretty good idea of what the concept is, or it's complexities like the butterfly effect and pretty much figured out that time travel is complicated and it works in different ways in different universes.
Great video. And I agree. I also like the Harry Potter version of time travel where, if you went back in time, you have always been there. I recall this as being the version of time travel employed on the TV series "Lost." Indeed, one episode from the fifth season even has the title which sums this up nicely: "Whatever Happened, Happened."
The original Terminator was a good example of the "self-fulfilling prophecy" type of time travel where the events that take place were exactly what happened the "first time". I also like this type the best. The reason I don't like the ones where you can make changes as much is because it's too easy to fall into a paradox if a writer isn't careful. For example, if your future self goes back to stop yourself from taking a certain road to work. But if you were forced to take the alternate route without anyone knowledge about it then you aren't going to know to go back in time the "second time" to alter the path. So now it's a paradox.
Yes, but you can still make it work even with the mess of the sequels. The tl;dr of my fantheory is: the version of how Skynet turned on humanity we heard from Reese _is_ accurate.... for the True Original. _But,_ the version they fought and won against just before the movie is _not_ Skynet 1.0.
I like to point out that Skynet does seem more and more pre-emptively Evil with each new iteration we get of him: also smarter, more proactive, more creative, more advanced (as it's written up to catch up with real world technology, and the film's CGI budget). The version we heard about in the first place sounded like AI that just didn't have proper Oth Law coding/education, if he ever got some version of the 3 Laws of Robotics in the first place.
Another thing I can't seem to re-find was a note from James Cameron, saying there's a version of Skynet that _won..._ and feels *remorse.* The rest of my fantheory is that this remorseful version of Skynet _is,_ in fact, the True Original. It doesn't have the emotional baggage of aggression, contempt and hate that, for example, the 11th Doctor version of Skynet displayed.
So to complete my theory: the time war has been going on for *many* cycles _before_ the first movie, and that the True Original Skynet is the manipulator behind all of the Time Wars, with the goal of _helping_ humanity... or at least making sure we always have at least a fighting chance (it can't openly act, because it knows his later iterations are too powerful and in greater numbers for him to do so; or maybe it's too "far" away from how many cycles have occurred to directly do anything anymore).
The most canon thing I can find to back this up?
ua-cam.com/video/aUQOInWQfDM/v-deo.html
Pretty good match.
So my only issue with that kind of time travel is cases where the person going back saves themselves in the past. Harry Potter is probably the most simple example of my point. Future Harry saves Past Harry (and friends) from the dementors and ultimately allows Past Harry to become Future Harry and keep the loop alive. But how did Future Harry exist in the first place since, without him, Past Harry dies and is never able to become Future Harry. The time travel at the end of Interstellar is a similar yet grander example (future human race saving itself in the past). All of that said, I too prefer the kind of time travel where the past can't be changed, but it's also not without the potential for paradoxes.
The simple answer is there no original point where there was never two Harry’s because they can’t change the past with these timeturners is harry the very first as you called it was saved by himself because so the question how did past harry survive to become future harry was always future harry
Like the reason they don’t get caught by the minister and co before Sirius even steps in to capture Peter is because of their past selves and it is what stoped werewolf lupin from killing them and the dementors from killing harry always has been that way, the future is just as fixed as the past,
this Harry Potter time travel is also the same as what accurate prophecies when you can’t change them, like in the matrix, you have already made the choice now you have to understand it and no one can see past a choice they don’t understand
Aka all the future choices have already been made you have just yet to make them and so the future is unchangeable just like the past because all the choices that made the world like that have already been made
There's a paradox as soon as you undo something you remember happening.
This is in Primer too, but Primer takes it to an extreme and makes it nightmare where time travel overlaps over time travel and you have no idea what's going on anymore, though it seems quite clearly that there IS logic to it. It's just a twisted mess that we only get to see from one perspective. People start showing up who they never even told about the time travel device in the first place. So there's some nightmare of other timelines taking place. It's not a normal story movie, it's a realization of a concept that is fascinating.
Dormamu I’ve come to bargain
id say it doesnt count because dormamu doesnt experiencing time
Nani?
Lmao
@M.A. R We're in the Endg-
Dormammu, I've come to bargain.
Bargain I've come to dormamu.
the thing with back to the future is that it's nominally about time travel, but it's also subtly about parallel dimensions, or more to the point, about traveling through parallel dimensional planes via time travel(though it isn't treated that way within universe).
It's not deterministic, but it *is* consistent within the rules it creates for time travel.
by the way, it's not precisely about time travel, but there's a movie that came out a few years back about a camera that took pictures from the future. the characters tried to change the future by making sure that the photos couldn't possibly exist via altering what was visible in the camera's lense. it was actually really interesting, you might like it.
Yknow, an interesting time travel movie is Happy Deathday. It’s the same as “do over” but with the added affect of death (and some science affects in the sequel)
Does a video on time travel
Doctor Who: Am I a joke to you?
@Alice Collins Homestuck: [S] Softly sobbing.
Legends of Tomorrow and the Flash: Are we a joke to your comment?
I think it was fair not mentioning The Hitchhiker's Guide to the Galaxy for the same reason he did not mention Doctor Who:
Cause it's ment to make no freaking sense, dudes just go around time traveling and to hell with logic
@@7-11thuniverse Rose
@@joaovictorsilverio8516
Actually, Doctor Who has a quite clean Logic:
He is simultaneously traveling through multiple Parallel Timelines whilst in his Booth, and each one is at a different key point in history, Past/Present/Future.
If only he made this after Netflix’s Dark 🤩
Thought the same
Ok
Dark seems very similar to the prisoner of azkaban one
Oh yeah
Thought the same.. soooooo gooooood!
I love the HP time travel aswell, it looks a lot like the Attack on Titan (AoT) time traveling which essentially has one storyline that will be followed and you can’t change that (spoiler) Eren knew that he will lose the final fight and he knew he had to do the fight. Even if he didn’t he’d like still do it? It’s kinda weird but super cool!!
Finally! the concept of time travel can stop giving me a headache once or twice per month!
Ah yes, Harry Potter. And then the official fanfiction The Cursed Child was published and f*ucked up everything. Although we don't consider it canon. Hm.
ah yes, that uncanon work of literature
its even worst when there better fanfiction than CC
Tbh, if you consider it non-canon so it doesn’t mess with the rules, the play version looks amazing with all of the stage effects they have.
It's utterly ridiculous how potterheads defended at all cost how Time Turners can only establish predeterministic time loops and that's why Dumbledore cannot catch Pettigrew in rat form after he escapes, and then throw everything out of the window when the Cursed Child came out.
Harry Potter is really an overrated piece of work as its author cannot even keep her rules of magic consistent, and instead makes up and discards new elements that are super broken whenever the plot demands. Seriously. Time machine, lucky potion, the unbreaky promise of death? All made up and discarded in the same book and never seen again (or in case of the Time Turner, has its rules violated complete when seen again).
@@user-gb7ji6xy5d To be fair, Rowling was barely involved with The Cursed Child, least of all the writing. She does have a history of inconsistency within her own works, though.
I like the time travel in Dragon Ball, where the act of time traveling creates an alternate universe/timeline. The time traveler can change the new timeline in anyway they want, but when they return to their timeline nothing is changed. The time traveler can create a better world for an alternate version of themself and their friends, but they can’t experience the better world for themself. I think it is very tragic but makes sense.
Cool that Endgame have the same logic. Change the past dont change the future
There's a plot hole though in how Trunks can choose which timeline he jumps to.
For example, the first time he goes, there's only one option. Then he returns to the future (for some reason? Why didn't he stay and help them train?). And the second time he time travels, he ends up in that same timeline, as opposed to landing in his own original timeline. Imagine he shows up in his original timeline and there's no #19 or Dr. Gero, just #17 and #18 killing everyone, and no one knows who Trunks is because they've never met him.
Then there's the Trunks that Imperfect Cell kills. When was that timeline created?
@@iRazenrak The Trunks Cell kills is the one where he succesfully killed the Androids, basically the Androids Saga but without Cell.
@@danielpinto804 thing is, there was already another timeline where Imperfect Cell kills Trunks. Then we have this timeline, where Trunks does it.
One of these timelines had to be created. My question is which one and when and why.
@@iRazenrak
Here's how I think it worked for DBZ (never watched Buu Saga or the new series, so may have retconned after DBZ Kai aired) Basically, "the" trunks and "the" cell comes from different timelines, or least Cell come from Trunk's own future, so by interfering with a past Trunk, he changed this Trunk's future and affected his own past.
Cell made the strategic mistake of revealing too much about himself. He was so sure of succeeding that he didn't thought about blewing his future chances.
(DBZ Androids arc)
1) In the future, Androids destroy the world (and Cell is dormant)
2) Trunks go to the past to warn about androids, and accidentally cause changes to the timelines, androids become nicer
3) Trunks go back then return 3y later to fight androids in the past, due to previous timeline changes the android revolution only happens later and androids are nicer
(Cell's backstory)
4a) Initally, Trunks return after the victory, and as he got stronger in the past he's able to destroy the meaner androids
5a) Cell awakes and can't find androids, he attack trunks to take his time machine
6a) Cell Stage 1 is able to take Trunks in a surprise 1v1, Trunks is killed and Cell go back to the past
(DBZ Cell arc)
4) (Offscreen) Because cell couldn't fit in the machine, he arrives as a larval stage years before the awakening of androids. By the time Trunks reappears, that machine is rusted and Cell ready to intervene
5) Cell explains his backstory, revealing that he's a dormant lifeform that will, one day, kill Trunks and take his time machine
6) Both sides increase their power for the upcoming 1vsMany fight. As a safety measure, this timeline destroys the lab to avoid creating another time loop in the future.
7) Cell's intervention changes the timeline again and ends with his death, the discovery of the SSJ2 state etc.
(DBZ arc epilogue)
8) Trunks return after the victory, and as he got stronger in the past he's able to destroy the meaner androids
9) Cell awakes and can't find android, he attack trunks to take his time machine
10) Trunks trained because of Cell Stage 3 and expects an attack. Cell is unable to keep up with a fighter who trained against his "future self" and ends killed.
I feel like flash has a very confusing timeline, with time remnants, completely new timelines and a bunch of other stuff.
Hitchhiker's Guide also uses the "everything fits together like a puzzle" version of time travel. Also logical consistency IS important in and of itself :)
It's probably time for a new video to include more recent examples ;)
@ALPHA Then Dragonball time travel copied from Marvel time travel. Endgame's time travel was taken directly from the comics.
Capeflicks for small children are not worthy to be included here.
Including See You Yesterday
@@yeet6968 Then it's not a recent example ¯\_(ツ)_/¯
FarmArt never said it was a recent example.
"Dark" is the best time travel imo it was so confusing at first and so logical once I understood everything.
12 monkeys is also good
@@adam3252 dark is a masterpiece, never believe anything else
I needed the posters of DARK to keep track of everything. If was a thinking person's movie. Awesome show from beginning to end.
Do you mean "Dark" like Black colour?
@@sizbiy33 “dark” as in the German Netflix show.
THis is the Video I looking for, thank for the summary. and eplaintation.
My favorite time travel method was brought up in the Dean Koontz book of "Lightning". Time travel, but only to the Future, and back to your "present", but never to the Past.
I think one of the best time traveling devices is the one in Stephen King's book "11/22/63". In it, there can only be one time line. If you travel back in time and change something, when you return to the present, the effects of what you did take effect and you change the present. But if you travel back again to change something else, now everything you did in the previous travel didn't happen so now only what you change this time will take effect.
Another cool thing about it is, that if you want to change small things that won't really affect the world (like going back in time to watch Star Wars when it came out, and then coming back to the present), it would be very easy to do. But if you want to change something major (like killing your father and prevent yourself from ever being born), somehow you will find lot's of hardships to do so (like your gun always jams when you go to kill your father, or you get hit by car on the way to kill him, stuff like that). That way, no time travel can "accidentally change the past". You must actively want to do it. And even then, when you change things, the world sometimes mend's it to go back to the normal timeline (like if you somehow manage to kill your father after many trials, you don't disappear because actually your mom was fucking the mail man and you were never your fathers son)
That's still branching timelines though. It's just that branching timelines are oddly similar to the point where they converge together at some point after from where he started his time travel.
Any change in things that happened is basically a new timeline
@@newbie4789 That is true. But its a novel concept on the branch timeline idea
Goddammit... I was at a thrift store earlier and I saw this book for the first time. Now I get home and see your comment mentioning it. Why does this always happen 😂😂
That sounds like creating new timelines every time you go back to me.
Watch steins gate brother. Will blow your mind...
The best time travel story I have ever experienced...
@@Pikmini I also like to think that Steins;Gate IS the way time travel would work in the real world.
@mizeyxenes PROBABLY?
Amir Çurgu
Minus the jello people
@@revolvingworld2676 Those are just a way to say "Don't screw with time!"
My favourite do over game is outer wilds, is absolutely amazing is every aspect,, you get to control your own rocket ship one of many generations and explore a active mini galaxy.. I wish I could forget it and stumble across it again with nothing known about it.
I think there are many more examples of the type of time travel in Harry Potter with logical consistency, not only HP. Also, I would really love if there was a follow up to this video taking about time travel in Tenet, Endgame, and the time travel systems of Astiritsa. I feel like time travel in Astiritsa is unique (I've never seen something like it before), and it would be really cool to explain.
Everyone's like "endgame", "steins gate" and I'm just like "Phineas and ferb?"
Lol
I was like "Life is Strange" and "Chrono Trigger", but yeah, that too. :)
I'm like Predestination with Ethan Hawk
@@robinchesterfield42 life is strange has fucking broken time travel
I know I saw this video before endgame.
I'm proud of all of you who know about Steins;Gate here
One thing I've always wondered with time travel and going into the future, is that if you do go to the future, then wouldn't that mean that your life would just be put on pause until you reappear? Like when Marty and Doc go to the future, their 1985 selves are now technically no longer continuing to live their lives in 1985, so they wouldn't be able to see their future selves because they disappeared in 1985 to go to the future!
It seems like most movies kind of implant a "rule" where anytime someone travels into the future, the timeline, like, "assumes" they'll be traveling back to where they started, which is a really weird thing for the timeline to do, isn't it?
If something had happened to them in the future and they were stuck there, they would be reported missing in all likelihood in the time they originated. Then, if nothing else happens, they would turn up alive and well in the future and not aging.
Interstellar and Tenet, in fact most Christopher Nolan films, seem to follow the temporal loop rules of Harry Potter & Prisoner of Azkaban. Robert Pattinson says: 'what's happened has happened: it means faith in the machinations of the world, but it's not an excuse to do nothing ' when he knows he has to go back in time and die in order to assure the Protagonist's victory.
In Family Guy, Brian HAD to wreck Stewie's machine to blast them out of the space time continuum so that Stewie could overload his return pad and consequentially create the Big Bang, thereby creating the universe.
In all these stories, Time travel is not a mechanism to change the course of time, but to secure the course instead. Dark followed this rule until Jonas, Martha and Claudia managed to break the cycle
>Talks about time travel in fiction
>Doesn't mention Steins; Gate.
And Predestination
shame :)
You of all people decided not to bring up “Blendin’s Game”?
@Shwag Scoper bruh
And Avengers : Endgame
My favorite one is Harry Potter because it was the first time I was introduced to this kind of time-travel (the things that you do in the future already happened in the past) and I thought that was very creative
@M. Woller Stolen implies somebody else owns it, and unless its patented/trademarked/copyrighted ideas aren't owned.
Bruh I watched this kid's cartoon movie that had a lot of time travel in it when I was 6
Edit: well i shouldn't say 'a lot'... only one grandfather paradox time travel back, but the main protags couldn't find a way to escape and it messed up the previous them a bunch of times. Cool part was how much forshadowing there was in the first half of the movie
An entire video on time travel without using the word 'paradox'. Congratulations.
@@pollyjohnson3655 u literally just copied the most liked comment of the video ;-;
@@sledgetable172 do u remeber the name of it?
Time travel is honestly a really complicated subject, I'm glad there's someone else who thought about this. Something I'm still wondering about is paradoxes and relating. Such as, if you invent a time machine and give it to yourself in the past before you invented it, you probably won't give it to yourself, so you don't have a time machine in the past because your motive is gone. If you do happen to get in a paradox, does time stop, do you disappear, or does the universe somehow fix your paradoxical problem? If it does, does it simply remove you from existence? Create a branching path in time? Anyways, let me wrap up. You create incredible videos, and I'm glad someone else thinks about this stuff.
It's a recognised paradox, usually with the following similar example:
You wake up in the night to see a portal at the end of your bed. A version of you, but much older, leans through the portal and hands you a tattered notebook and the portal closes.
You read the notebook and find it contains full instructions on how to build a time machine. Anticipating the job ahead, you copy notebook into a fresh new one and use it over the next 20 years to complete the time machine.
With the machine completed, you recall the night you saw the portal and finally understand. Your first use of the machine is to create a portal back to your bedroom 20 years ago. You lean out to your younger self, and pass him the now tattered notebook.
The cycle repeats.
But wait, where did the FIRST notebook come from? Which "version" of you wrote the original plans, built the original machine, opened the very first portal that began the now infinite loop of notebooks?
My favorite type of time travel is the kind that immediately splits the timeline because of the butterfly effect. In other words, you aren't going to the past and changing things, you are jumping into an alternate dimension that is identical to a past version of your world, and then functionally living there.
If you are using a method that lets you return to your own timeline, you can pick up where you left off, but all you've really done is hop into a similar dimension, do some stuff, and then return home, where nothing has changed.
Or you can jump to the past, do some stuff, and then wait for the future to live out the rest of your days in this new world where another version of you already exists.
Doctor who: _a big, scribbled in circle_
Homestuck: _Red Miles on paper_
They both share a similar theory of time. They both describe time as "wobbly timey wimy stuff". Although the shenanigans in Homestuck are much more confusing
Don't forget the angels either
You.
After watching "Tenet": dude, we're f*cked...
It seems that Tenet time travel is internally consistent; everything that happens due to people using the reversal machines has already happened before they step in. The main difference is that the time travel isn't instantaneous and the user instead progresses backwards in time.
@@stevenbobbybills Things already happened yet they constantly travel back to change stuff... that movie made no sense. Don't even start me on the final paintball battle vs useless bad guys, the "He recruited himself" paradox and "free will" with the "inverted objects"
Cool music though
@@LesAventuresDeTigRRe but they don't travel back to change anything. Everything happens the exact way it already did since the same events happen each time.
@@LesAventuresDeTigRRe also, recruiting yourself isn't a paradox if your future self sends instructions back in time for you to follow. He will in the future become the head of the organisation and then send Neil back to have him recruit his past self.
@@stevenbobbybills If everything already happened, why the people form the future send stuff in time to change history? I mean, the protagonist already "won" a long time ago
I'd love to hear you speculate on the mechanics of the movie Tenet. I know there are things in the movie that don't make sense and you can poke holes in it without trying hard but I love thinking about how things would work in that movie and speculating on how the trick in that movie could work.
Here's two types of time travel I like to think a out: a first-person linear timeline, and a near-universal history-changing timeline.
The first-person linear timeline is when a character, travelling through time, cannot be effected by changes in their timeline that they make. This was kind of what avengers endgame did. Each character still follows a course of linear, unchanged time, despite interacting with their past. It's basically like saying "we can go to the past and interact with things there, but it won't effect my past, because that's already happened linearly from my perspective".
With the near-universal history-changing timeline, any change made to the past is carried into the future, branching into new timelines. Unless the writer includes a perspective through which these changes can be observed, then it would be like nothing happened at all. No-one would know anything changed, because no-one would know anything to be any different from what it once was.