[I_dmc]

I never understood the 'grandmother paradox'. I see no reason that one couldn't go back and affect history to the degree of eliminating your own existence. The real question would be, would you actually cease to exist? I tend to think no. I believe one would make oneself an 'anomoly'. The key is the past that created you would not be altered, only the past when you came back.

[Reaganwuzthebest]

I see no reason that one couldn't go back and affect history to the degree of eliminating your own existence.

The original Star Trek did an excellent episode on that possibility, which is anyone who traveled back in time could not alter any events without running the risk of affecting their own existence.

It might explain why if there is in fact those from the far future who managed to go back have done nothing to prevent a Hitler or a Stalin.