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Two things could happen: 1. History is changed, but people or whatever will change it so history remains the same, i.e. "The Waters of Mars". 2. History is changed and the future ends up worse than it was supposed to be, i.e. "Back to the Future, Part II".They are fixed. Why do this sort of thing

History can be changed, only fixed points in time can't because they are very important to the future like World War II or Bowie Base One

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