FAULT LINES - HOW HIDDEN FRACTURES STILL THREATEN THE WORLD ECONOMY

The left has figured out who to blame for the financial crisis: Greedy Wall Street bankers, especially at Goldman Sachs. The right has figured it out, too: It was government's fault, especially Fannie Mae and Freddie Mac. Raghuram Rajan of the University of Chicago's Booth School of Business says it's more complicated: Fault lines along the tectonic plates of the global economy pushed big government and big finance to a financial earthquake. To him, this was a Greek tragedy in which traders and bankers, congressmen and subprime borrowers all played their parts until the drama reached the inevitably painful end. (Mr. Rajan plays Cassandra, of course.) But just when you're about to cast him as a University of Chicago free-market stereotype, he surprises by identifying the widening gap between rich and poor as a big cause of the calamity.