See Joab's Economic Theory of Rational Haunting

If you are wondering what to get a loved one for the holidays, consider tickets to the Morgantown Paranormal Conference, which will feature TPS friend and economist Joab Corey as a guest speaker. We've referred to or written about Joab several times now, but this may be my favorite Joab story yet. He plans on presenting his rational ghost hypothesis, which is a game thoery demonstration of when it is rational to fear ghosts (assuming they exist). We'll try and get him to send us the abstract when he's ready for that talk.