Robert Shiller of Yale University is #48 on Foreign Policy’s list of the 100 Top Global Thinkers of 2010. He tells Chrystia that his big idea is that “finance can serve humanity, especially if it democratizes.” In fact, Shiller argues that the spread of finance is responsible for the super-cycle of economic growth that the world has enjoyed over the past half-century. He disputes the charge that finance is mainly beneficial to a small cabal of bankers in the world’s financial capitals.