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Emanresu56
Emanresu56 is offline
#2
Feb10-09, 06:48 PM
P: 13
I don't know about any theories, but I can think of two possibilities that could happen if time travel into the past was possible.

1. If you kill your grandfather, then you can't travel back into the future.
2. If you kill your grandfather, then you cease to exist.

But, perhaps, if you kill your grandfather, it wouldn't matter if you killed him in the past, because you already exist in the future.