The Unintentional Unknowing of the Trainer

Hans the horse answered math questions and it would click its hoofs the number of times for the answer right. The thesis is that essentially the horse was reading the audience right. People are getting more and more tense as the horse gets closer to the correct answer, then kind of relieved when the horse doesn't get it wrong. "It just put a little doubt in my head of is maybe what's occurring people have a broken brain but the investigator is leading them down this path"