If the multiverse theory is real, and there are infinite parallel universes and infinite different versions of yourself, have you ever thought that maybe the times when you suddenly get sad for no reason that one of your parallel selves is sad and you're feeling what they're feeling. That when you laugh out of nowhere it's because something funny happened to one of your parallel selves. That when a song suddenly appears in your head and you haven't listened to it in a long time, it's because one of your parallel selves happens to be listening to that song?