[SOLVED] A Solution to the Grandfather Paradox For those who don't have a clue of what the grandfather paradox is, here is the definition: Okay, so my solution: My solution is enitirely based on Richard Feymann's multiple history idea. So, you go to the past, kill your grandfather. This automatically creates a new history. (sort of like a branch, so to speak)You would still be in existence in the original history, but not in the new one. This causes me to ask, can you exist twice? If your grandfather's twin becomes your grandfather, would you still be the same person(genetically speaking, and not refering to personality traits, as that gets quite a bit complicated)?