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
  • @LouNeko
    2•3 days ago

    In either scenario, I’m more interested in where the matter you’re made of will come from:

    • Either you go to the past and suddenly add additional atoms to the universe.
    • All the atoms you’re made of will suddenly be taken from their origin to form you.
    • You’ll be made from entirely new atoms created from pure energy meaning your arrival will cost ~6.75 Quintillion as in 10^18 Joules (I eyeballed the speed of light here so don’t @ me).