you need to add one more option because if there are an infinite number of universes with an infinite number of possibility's than even if none exist here than they definitely exist in a lot of universes and if there are an infinite number of universes than there should be an infinite number of universes with ghosts, spirits and everything. plus it may sound weird but there are universes that are exactly like video games!!! so nomad and master chief are running around teabaging aliens. there are even universes that have cheat codes for life like you can walk down a street and see people jumping out of buildings over and over again without even getting dusty or as hard as it is to think of how it would work ones that are pretty much video games i mean they even look the same and have glitches but there are conscience beings there. one other thing is their could be people or other things that live in a different layer of our own universe it could even be they see us but we dont see them it could even be almost identical except with different people or they cant see us and we cant see them so no one could ever know that the other people where there. so yes no it depends on which membrane or what ever else there is or what ever is out there that we cant even comprehend you are talking about. oh and i forgot to mention there are tons of them that consist entirely of talking pies!!!