There really is a multiverse. It must be a crowded place. Could this be an explanation for ghosts, watchers, and other assorted nasties? If each universe is an enclosed bubble surrounded by trillions of other universes, is it possible that occasionally two universes would "bump" weakening the barriers and thus allowing passing glimpses into alternate realities? Would these universes be aligned so that geographic locations would be adjacent in respect to each other? So many questions. It's kind of comforting to think that in another universe someone, or something is staring back at us saying "Holy crap, did you just see what I saw? No one's gonna believe this. Yes, I got a picture, but it's kinda blurry." As I had my math skills removed years ago by a head injury I can only speculate now on the physics involved. Is each universe surrounded by by a membrane of dark matter keeping each universe apart? If so, could the big bang be explained by a lack of dark matter that allowed two universes to collide? So many questions and so little understanding. Thank you, Neil Degrass Tyson for opening my mind to think about something other than whats for lunch.