" The professors' conceit was to think that models could forecast the limits of behavior. In fact, the models could tell them what was reasonable or what was predictable based on the past. The professors overlooked the fact that people, traders included, are not always reasonable. This is the true lesson of Long-Term's demise. No matter what the models say, traders are not machines guided by silicon chips; they are impressionable and imitative; they run in flocks and retreat in hordes. "
― Roger Lowenstein , When Genius Failed: The Rise and Fall of Long-Term Capital Management