Something I've wondered about...
A thought occurred to me today as I had to listen to someone harangue me that ghost hunters were the snake oil salesmen of the modern age: I'm not overly familiar with any 'hard' scientific studies of the phenomena.
Has anyone ever, say, tried to introduce controlled conditions into a supposedly haunted location and just recorded data, for example? I was being rather roughly treated as I could not off the top of my head recall anything more elaborate then field research and as far as I know no one has ever weighed a ghost.
So, where is the 'hard' scientific interest?