I've heard a theory that we are all in this computer game, and get unlimited lives. Like, if our character gets killed, we just keep coming back into the same life, but with the ability to make different decisions. It could explain things like deja vu. Also, it's a type of reincarnation, just into the same life every time. If you get a new avatar for the next round, that would be reincarnation into a new life with a new personality. It's wild to think of all the possibilities.