The piece is well written and Benjamin Radford is a skeptic I've followed on my google reader for quite some time.Part of the difficulty in investigating ghosts is that there is not one universally agreed-upon definition of what a ghost is. Some believe that they are spirits of the dead who for whatever reason get "lost" on their way to The Other Side; others claim that ghosts are instead telepathic entities projected into the world from our minds.
30 January, 2013
Benjamin Radford has a hard-hitting piece about ghosts that lays out many of the questions and logical contradictions raised by ghost claims. The number one problem, like the god problem, is in tacking down a definition of "ghost."