Hi everyone I'm new here--a first year penn state undergrad--and the extent of what i know is the popularizations of quantum physics, so i might be a little off base, and I know that what i'm about to ask is borderline unscientific, but here goes Everett wrote his theory of the many-worlds without any mention of a physical world split, but rather on the lines of decoherence, with people only being able to pick up on certain frequencies. So, all around us, there are tons of different worlds existing, full of people, that we cannot interact with because they have been hit out of phase from us. I've also done some research on the paranormal, and assuming that ghosts do indeed exist (PLEASE do not come on here and complain about how ghosts scientifically cannot exist), and that Everett's theory is right, would it be possible for ghosts to be some people between phases? Maybe someone was knocked out of phase with their world, and only partly appears in ours...would this be consistent with Everett's theory? Thanks!