director, was a forerunner of the many physicists and other scientists who have Dr. Derman, who spent 17 years at Goldman Sachs and became managing flooded Wall Street in recent years, moving from a world in which a discrepancy unending mockery to a world in which a few percent one way can land you in jail and a few percent the other way can win you your own private Caribbean island.

— Dennis Overbye, New York Times, 9 Mar. 2009