From Rosabeth Moss Kanter: Coping with the unexpected is a leadership imperative. In every endeavor, the ability to recover quickly separates winners from losers, whether they are reacting to fumbles in a sports match or curve balls thrown by external events. I summarize the challenge of managing volatility in a simple equation: MTBS = or < MTMD. MTBS is the mean time between surprises, which is shrinking. MTMD is the mean time to make a decision, which better be fast.