I haven't read the article, but from Proteus' post, I can gather what it says. But I would just like to add, to what Proteus already said, is that metaphysics doesn't necessarily apply to the paranormal. In fact, I thought paranormal investigations were very much so dealings with physics . . . physical anamolies, if you will. A QUOTE-UNQUOTE ghost is probably best defined and understood through laws of physics than the abstract ponderings of metaphysicists.