What are Ghosts, anyway?!
Many of us, starting out on paranormal investigation would be quite happy to see a ghost, or poltergeist activity of some kind. But, after a while, some of us start to wonder what they really are.
Here are some of the options which we might consider ...
1. WYSIWYG or simply a ghost is a ghost is a ghost ... end of!
2. The appearance of a ghostly apparition is something constructed in the perceiverís mind due to local conditions and, or something going on within that person.