Engineer, Mathematician, Physicist

The physicist interrupted him: ". . . but you didn't take individual variations into account. I did a statistical analysis of their previous performances and bet on the horses with the highest probability of winning . . ."

". . . so if you're so hot why are you broke?" asked the engineer. But before the argument can grow, the mathematician takes out his pipe and they get a glimpse of his well-fattened wallet. Obviously here was a man who knew something about horses. They both demanded to know his secret. "Well," he says, between puffs on the pipe, "first I assumed all the horses were identical and spherical . . ."