Despite his lack of formal training in Islamic law, Mr. Yerushalmi has come to exercise a striking influence over American public discourse about Shariah.

CENTERFORSECURITYPOLICY: Center For Security Policy

He makes up for a lack of formal legal training by inhaling turgid court opinions and chatting up lawyers from both sides.

FORBES: Marlboro Man

One question this raises, the authors concede, is just how essential management education is indeed, the success of iconoclasts like Bill Gates might suggest that a lack of formal management training was a positive advantage in becoming a successful entrepreneur.

ECONOMIST: Do bosses need their own Hippocratic Oath?