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Comment author: charon 05 January 2008 04:41:35PM 6 points [-]

I think one would be the closest to truth by replying: "I don't quite believe that your story is true, but if it is, you should... etc" because there is no way for you to surely know whether he was bluffing or not. You have to admit both cases are possible even if one of them is highly improbable.