You Are Technically Immortal

/.../ For that matter, consider the possibility that stories aren’t just stories. The Marvel Comics Multiverse acknowledges the existence of our world-line, one where superheroes don’t exist but are merely stories in books and movies. It could very well be that—since physical laws may be very different in other world-lines—these are not stories at all, but actual people and events transcribed from other realities. This goes for anything ever “imagined” or “created”—there exist world-lines where Hogwarts School and Harry Potter, Camp Crystal Lake and Jason Voorhees, Gotham City and Batman, all exist in physical reality.

http://themindunleashed.org/2014/02/10-mind-bending-implications-many-worlds-theory.html