I remember hearing about a blond news woman who was doing a live interview of a psychologist discussing low intelligence.
She asked him if there was a way to quickly determine if someone was of less than average intelligence.
He said that yes you can. You ask them a question that any one with reasonable intelligence will be able to answer correctly.
She asked for an example and he said.
Captain Cook circumnavigated the earth on three trips. He was killed on one of them. Which one.
The woman replies. Ah, can you give a different question? I'm no good at History.
She votes....sigh