tried to debunk the Shawshank prison 'chair room' and I'm annoyed because I can't

You know the Ohio State Reformatory, Mansfield, the one they shot Shawshank in. Built 1886-1910, shut 1990, now it's a full ghost-tour operation. Fine. The bit that gets passed around endlessly is the 'Chair Room' — leave a chair in the centre, come back, it's moved. Poltergeist, scratches, the work……