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154

If time travel were to exist, which theory would you subscribe to? (lemm.ee)

submitted 1 week ago by [email protected] to c/[email protected]

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Some ideas are:

You branch off into another timeline and your actions make no difference to the previous timeline
You’ve already taken said actions but just didn’t know about it so nothing changes
Actions taken can have an effect (so you could suddenly erase yourself if you killed your parents)
Only “nexus” or fixed events really matter, the timeline will sort itself out for minor changes
something else entirely

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[–] [email protected] 1 points 6 days ago (1 children)

Yes. If you go back in time, you end up where the Earth used to be at that moment, I.e. thousands, hundreds of thousands, millions, hudreds of millions kms away. Arguably, if you go back a full galactic year you can end up somewhat in the vincinity of the solar system.

[–] [email protected] 2 points 6 days ago* (last edited 6 days ago)

Time travel wouldn't be by jumps but by contionous change in perpendicular* time dimension.

So earth wouldn't escape from your feet as you would move with it, just like you are doing right now with just one dimension.

*time travel would be imposible if you can move only in positive direction. ~~Then the 2nd time dimension would need to be under some funky angle (3/4π>α>1/2π and α≠π and α≠0)~~ i am wrong

Edit: After some thought, to truly time travel the second dimension would need to be parallel to the original one but backwards. So some people would be living in reverse time. (I have seen that concept in Sci-Fi)

Still the perpendicular time dimension is too funky of a concept to truly give it up.