A man dies and finds himself in purgatory. St. Peter offers him a way to avoid the thousand year wait to get into Heaven and offers him a deal. He leads the man to a special room with two doors. One door leads straight to Heaven, and the other will end the man up in hell for eternity. Inside the room are two guards. One guard is a ‘perfect liar’ and the other is a ‘perfect truth teller’. That is, the first will always tell a lie, and the other will always tell the truth. St. Peter tells the man that he has no way of knowing which door leads where, and no way of knowing which man tells the truth. He offers the man one question to either man. What is the one question that the man can ask to assure his salvation?
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