…and  asked him a question with which he was most at  ease.

‘Would you mind telling me, Doctor,’ she asked,  ‘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.

Well, you might ask, ‘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.’