you're in a room with two doors. one door leads to immortality. the other leads to instant death. you don't know which is which. you want to find the door that leads to immortality. there are also two computers in the room. one computer is programmed to always tell the truth. one is programmed to always tell a lie. again, you don't know which is which. you are allowed to ask ONE computer ONE question to help you get out the door that leads to immortality. what is that one question?