this post was submitted on 26 May 2024
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[–] ZILtoid1991@lemmy.world 6 points 6 months ago* (last edited 6 months ago)

It depends on the type of time travel rules. One theory suggest going back in time creates a branch in the time-space continuum, one where the time travel happened, one where it did not.

With this branching time-space rule, there's one timeline, where no time travellers appeared, and one where they did.