Board Thread:Sly Cooper: Thieves in Time discussion/@comment-98.81.173.48-20121212123938/@comment-5938643-20130112203159

its just that there are theories that if time travel were possible (it isnt) the universe would recognize that 2 versions of the same person are in existence at the same time and would rectify the problem (erase the one that travelled).

But i'm glad you're so sure. You seem to know a lot about quantum mechanics/physics