thx (15:32:04 31/07/2010)
If a grandson returns to the past and kills his own grandfather, his birth will be impossible; but if he does not be born, the grandfather will not be killed, and his birth will be possible.

whey (15:32:25 31/07/2010)
In the future, Fray fucked his grandmother.

thx (15:32:34 31/07/2010)
Strong argument