SIMON JOHNSON, former IMF chief economist and now professor at MIT's Sloan School of Management, has been one of the more vocal critics of the coziness of the ties between the financial sector and the government, particularly in the United States. He spoke on Saturday evening at INET's conference in Bretton Woods on a panel on "Too Big to Fail" (or, more formally, the regulatory challenge posed by large, complex financial institutions). He has lost none of his vim. Worth a listen: