This current financial crisis had many causes. It had its roots in the global imbalance in saving and consumption, in the widespread use of poorly understood financial instruments, in shortsightedness and excessive leverage at financial institutions. But it was also the product of basic failures in financial supervision and regulation. Our framework for financial regulation is riddled with gaps, weaknesses and jurisdictional overlaps, and suffers from an outdated conception of financial risk. In recent years, the pace of innovation in the financial sector has outstripped the pace of regulatory modernization, leaving entire markets and market participants largely unregulated. That is...