The beginning of Harry’s audition for “Star Seek” is a nightmare. A heckler in the audience disrupts his magic act, complaining that he’s seen Harry’s tricks before. After mopping flop sweat from his brow, Harry tries some new material. Using a piece of string and his knowledge of body math, he predicts the size of the heckler’s wrist, neck, arm span, and height. The crowd applauds wildly, and the club owner predicts Harry will be a big star.