Although the firm had a long-established practice of hiring M.B.A.s, Levy, a man without a degree, had his own system for staff recruitment. Early in the morning, before the markets opened, he would invite high school seniors into the office to play bridge or poker with him. He would play whichever game each visitor knew best, watching how his opponent’s mind worked. Did he remember which cards had been played? Could he judge risk? Under pressure, could he keep his wits about him? These were the skills he sought. Successful trading, Levy believed, rested on ability as well as steely nerves, integrity, and luck. For years many of the firm’s best traders had no higher education, but had passed Levy’s entrance exam.45