. . . the Quaker Oats man was undergoing a hearing evaluation blindfolded. The audiologist placed her finger on the middle of an empty record player, on the small steel pole where a record would normally go, and said, "Can you hear this?"
The Quaker Oats man said, "Yes." Then she said, "Great. Now I'm going to move my finger to the edge of the record player, and I want you to tell me if you can hear when I move my finger." But she didn't move her finger. She kept it on the pole. It was a trick. And the Quaker Oats man fell for it. He said, "OK, yes. I can hear your finger moving."