The Great Recession wasn't the result of subprime mortgage madness, according to a new report from the National Bureau of Economic Research. It was just a plain old bank panic. Yeah, but weren't bank panics supposed to be a thing of the past, thanks to the creation of the Federal Deposit Insurance Corporation in 1934? That's the problem. The report, by Yale economics professor Gary Gorton, says subprime mortgage securitization was a mess -- a house of cards probably doomed to fall -- but subprime by itself simply wasn't big enough to put the entire financial system at risk. That...