A noted psychiatrist was a guest speaker at an academic function where former House Speaker Nancy Pelosi happened to appear. Mrs. Pelosi took the opportunity to schmooze the good doctor a bit and asked him a question with which he was most at ease.
“Would you mind telling me, Doctor, how you detect a mental deficiency in somebody who appears completely normal?”
“Nothing is easier,” he replied. “You ask a simple question which anyone should answer with no trouble. If the person hesitates, that puts you on the track.”
“What sort of question?” asked Pelosi.
“How about this one: Captain Cook made three trips around the world and died during one of them. Which one?”
Pelosi thought a moment, and then said with a nervous laugh, “You wouldn’t happen to have another example would you? I must confess I don’t know much about history.”