Time travelling paradoxes
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Aoi_Sora
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Google says:
Click this link: https://en.wikipedia.org/wiki/Temporal_paradox
Click this link: https://en.wikipedia.org/wiki/Temporal_paradox
Or maybe you were your own grandfather all along?
Personally, I really like intricate closed time loops, where the shenanigans that happen during the time traveling always happened and ideally, we get to see two perspectives of the events.
Though branching timelines and timeline hopping can also be 'fun', depending on what is happening in these timelines.
Time travel stories can be fun if done right, but there are a few things that can go horribly wrong.
The worst, as far as I am concerned, would be inconsistent rules of how it works.
BenJepheneT
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Grandma may be flab as shit rn, but God damn was she Detroit's Strawberry Shortstack back in the 30s.
TroubleFait
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One thing about loops.
At some point in the story, the character encounters future him, and eventually later goes back in time as this future him.
Looks like a stable loop.
At some point in the story, the character goes back in time to change the past, thus removing the reasons for time travel in the first place. Thus he doesn't go back in time, thus those reasons arise once more. Just like how if you kill your grandfather you cannot be born.
Looks like an unstable loop.
Now what if all stable loops are the result of unstable loops endlessly looping until ending up on a stable version?
At some point in the story, the character encounters future him, and eventually later goes back in time as this future him.
Looks like a stable loop.
At some point in the story, the character goes back in time to change the past, thus removing the reasons for time travel in the first place. Thus he doesn't go back in time, thus those reasons arise once more. Just like how if you kill your grandfather you cannot be born.
Looks like an unstable loop.
Now what if all stable loops are the result of unstable loops endlessly looping until ending up on a stable version?
Assurbanipal_II
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There aren't many actually. They are all merely a variation of the issues caused by the violation of causality. In fact, it is highly likely that time travel will forever remain impossible.
TroubleFait
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Now another thing about time travel.
Do you know the butterfly effect? It's an example of the Chaos Theory, which says that in complex enough systems, the slightest alteration of the initial conditions will drastically change the result down the line.
Well, Earth is a very complex system.
Imagine the act of creation of life. A multitude of sperm cells race to fertilise an ovum. The slightest alteration of the conditions, and a different sperm cell wins the race. A different baby is born. Some years down the line, it receives the same name, maybe the same education, as the one who should have been. But it's not the same person.
Eventually, things change enough that not one baby is born the same as in the original timeline.
By traveling through time and going to the past, you irredeemably changed the whole world.
And it will never be the same.
___ ___ ___
I've got one last thing to say.
Do you know 5D Chess With Multiverse Time Travel? It's the only time travel model I know that will not completely mess up the rules of causality. And I love it.
Here's a link to an explanation.
Anyway I wish you the greatest luck in your time traveling adventures. Have fun!
Do you know the butterfly effect? It's an example of the Chaos Theory, which says that in complex enough systems, the slightest alteration of the initial conditions will drastically change the result down the line.
Well, Earth is a very complex system.
Imagine the act of creation of life. A multitude of sperm cells race to fertilise an ovum. The slightest alteration of the conditions, and a different sperm cell wins the race. A different baby is born. Some years down the line, it receives the same name, maybe the same education, as the one who should have been. But it's not the same person.
Eventually, things change enough that not one baby is born the same as in the original timeline.
By traveling through time and going to the past, you irredeemably changed the whole world.
And it will never be the same.
___ ___ ___
I've got one last thing to say.
Do you know 5D Chess With Multiverse Time Travel? It's the only time travel model I know that will not completely mess up the rules of causality. And I love it.
Here's a link to an explanation.
Anyway I wish you the greatest luck in your time traveling adventures. Have fun!
Last edited:
Agentt
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BenJepheneT
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JayDirex
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here is the only constant I've learned from also researching the topic and reading other writing...
the minute the time traveler steps back in time he changes the future timeline. Period.
It's not a paradox it's just a different outcome. Because he traveled back from one POSSIBLE future. So when he return to the past to a certain point in his timeline he changed the future timeline to a different POSSIBLE future.
the minute the time traveler steps back in time he changes the future timeline. Period.
It's not a paradox it's just a different outcome. Because he traveled back from one POSSIBLE future. So when he return to the past to a certain point in his timeline he changed the future timeline to a different POSSIBLE future.
Malonymous
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Practically zero if you go with the multiverse theory! You don't have to worry about the rules of cause and effect if instead of time travel, it's 'traveling to a parallel universe' that produces a similar effect of 'going back in time.' Then you just have to worry about all the horribly failed universes that were left behind until the MC finally wins, but most stories just skip over that part 
It's either you cause a paradox or you don't.
Being able to go back or reverse a timelime to a previous reiteration itself needs information on the entire timeline and its possible paths to take.
If you don't? Well~ you could either be erased from existence or puncture a hole through reality and space-time continuum where you you will be sucked into an alternate reality or an alternate timeline(if you could survive the voyage that is).
Also, you'd need the energy to change/move an entire universe to actually be able to time travel/time walk.
Imprecise measurements lead to:
A) a shift in the entire timeline(a reality will always try to fix itself)
B) a cataclysm that could wipeout the entire timeline and its inhabitants(a universe is actually easier to destroy than a reality)
C) rearranging the entire timeline itself(an uncontrolled timetravel or creating a parallel world)
To escape those loops you either have to had a total control of the entire timeline or you're not part of the timeline itself.
Any injury sustained through this endeavor because of my opinion is out of my responsibility, reader discretion is advised.?
Being able to go back or reverse a timelime to a previous reiteration itself needs information on the entire timeline and its possible paths to take.
If you don't? Well~ you could either be erased from existence or puncture a hole through reality and space-time continuum where you you will be sucked into an alternate reality or an alternate timeline(if you could survive the voyage that is).
Also, you'd need the energy to change/move an entire universe to actually be able to time travel/time walk.
Imprecise measurements lead to:
A) a shift in the entire timeline(a reality will always try to fix itself)
B) a cataclysm that could wipeout the entire timeline and its inhabitants(a universe is actually easier to destroy than a reality)
C) rearranging the entire timeline itself(an uncontrolled timetravel or creating a parallel world)
To escape those loops you either have to had a total control of the entire timeline or you're not part of the timeline itself.
Any injury sustained through this endeavor because of my opinion is out of my responsibility, reader discretion is advised.?
Snusmumriken
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you forgot D) the original timeline already had you travelling to the past.
I can see that you also like that one movie where the MC is a paradox because he/she is his/her own father/mother/child/??? bacause of being a timewalker with a somewhat fixed timeline of his/her own inside the original timeline.
You sir are a man of culture~ ???
You could actually fit both on an Omniverse Theory because all multiverses/universes are possible with it.Practically zero if you go with the multiverse theory! You don't have to worry about the rules of cause and effect if instead of time travel, it's 'traveling to a parallel universe' that produces a similar effect of 'going back in time.' Then you just have to worry about all the horribly failed universes that were left behind until the MC finally wins, but most stories just skip over that part
AryaX
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Maybe a stupid question... Maybe something broke inside my head as I was thinking about time travel earlier... but... IF you were to go back in time, to before your father was born, to kill your grand father, etc... WHY would you expect to find your grandfather there ??
Why would you expect to find anything at all there ?? Other than what you brought with you of course...
Why would the earth, the sun, the moon, etc... be there ??
Shouldn't they all be lightyears away in the future... moving away from you at or near the speed of light ??
My physics are a bit rusty, and I might be confused about something... Maybe I have mixed some stuff up... But, I seem to recall that ALL the stuff in this universe is constantly moving, and everything is always moving at the same speed... The speed of light... Only the direction is changing... When you're going faster through space, you're going slower through time, and vice versa...
But IF there were an earth for you to arrive at in the past, and a grand father for you to kill, etc... Wouldn't that imply that things aren't actually moving through space and time in this universe at all ?? , but rather different frames or time-slices of a completely static universe are somehow being "activated" one after another ??
Life is not a movie, is it ??
Why would you expect to find anything at all there ?? Other than what you brought with you of course...
Why would the earth, the sun, the moon, etc... be there ??
Shouldn't they all be lightyears away in the future... moving away from you at or near the speed of light ??
My physics are a bit rusty, and I might be confused about something... Maybe I have mixed some stuff up... But, I seem to recall that ALL the stuff in this universe is constantly moving, and everything is always moving at the same speed... The speed of light... Only the direction is changing... When you're going faster through space, you're going slower through time, and vice versa...
But IF there were an earth for you to arrive at in the past, and a grand father for you to kill, etc... Wouldn't that imply that things aren't actually moving through space and time in this universe at all ?? , but rather different frames or time-slices of a completely static universe are somehow being "activated" one after another ??
Life is not a movie, is it ??