With his book, Dianetics, a best-seller, Ron Hubbard was America's new guru. In August 1950, at a lecture hall in Los Angeles he presented to a crowd of 6,000 the first person to be what he called a 'clear'. She was a student called Sonya Bianca. As a clear, she was supposed to have total recall.
"Various members of the audience called questions at her. Could she remember what was said on page 217 of her physics textbook? She couldn't. Could she remember what she had for breakfast on the morning of August 17, 1946? She couldn't. Then various people called out for Hubbard to turn his back on her and see if she could remember the colour of his tie. She couldn't. At that moment, the whole business sort of collapsed. People started leaving the auditorium."
Suddenly Hubbard was in trouble. He was accused of being a con-man and Dianetics a form of hypnotism., a technique at which he was so expert. Full audio and transcripts available here.