Several years before the financial crisis descended on us, I put forward the concept of “black swans”: large events that are both unexpected and highly consequential. We never see black swans coming, but when they do arrive, they profoundly shape our world:…. so writes Nassim Nicholas Taleb. Mr. Taleb goes on to explain how our basic understanding of the markets have to change from one of strength and consistency to one of organic strength where bad things can and will happen with regularity. The key will be how we react to them.