Related:

• Grand Master Turing once dreamed that he was a machine.
  When he awoke he exclaimed: "I don't know whether I am Turing dreaming that I am a machine, or a machine dreaming that I am Turing!...
• How many husbands -- does it take to change a light bulb?
  We'll know as soon as one gets off the couch and does it....
• Liberal: I don't know how expensive this thing gets!
• As you know, birds do not have sexual organs because they would interfere with flight.
  [In fact, this was the big breakthrough for the Wright Brothers....
• We know how to speak many falsehoods that resemble real things, but we know, when we will, how to speak true things.
  Hesiod...
• You'd better stand back... I don't know how big this thing gets. -- Adam to Eve
• How many spies -- does it take to change a light bulb?
  Why bother? (I guess the point is that spies like to do everything in the dark anyway?)...