So it's for this psychological experiment I have to do for a science expo at school And i decided to do it on magic. So i remember stumbling upon some video where Teller talks about how the spectator's minds work. And the second video i'm looking for is an old one, and have almost no recollection on anything about it except that the test was that, the audience was filled with magicians and laymen alike, and the magician did a simple ambitious card. Afterwards everyone was interviewed about how they think the magician did it. all the laymen said that he had multiple of the same card, and all the magicians said that he was using a double lift or sleight of hand.