I saw a talk about this one time and the lecturer said that 50-60% of people believe in ghosts (iirc). But I don't think this as crazy as it sounds. If you read

I saw a talk about this one time and the lecturer said that 50-60% of people believe in ghosts (iirc). But I don't think this as crazy as it sounds. If you read William James' on the varieties of religious experience, he talks a lot about peoples experiences feeling entities and stuff like that. Also if you read a bunch of psychedelic trip reports people say similar things like feeling spirits. So I think the more reasonable take is there is a part of the human brain whose function generates these weird paranormal feelings of presence. Some people have brains that do it more, some people less, and some chemicals can change that