Nassim Nicholas Taleb is an essayist principally concerned with the problems of uncertainty and knowledge. Taleb's interests lie at the intersection of philosophy, mathematics, finance, literature, and cognitive science but he has stayed extremely close the ground thanks to an uninterrupted two-decade career as a mathematical trader. Specializing in the risks of unpredicted rare events (black swans"), he held senior trading positions in New York and London before founding Empirica LLC, a trading firm and risk research laboratory. Taleb is a fellow at the Courant Institute of Mathematical Scien...