This is a lecture that Paul Krugman gave at MIT recently -- The Economic Meltdown: What Have We Learned, if Anything? Krugman tried to explain how we got here AND why it seems so hard to wrap our minds around strong policy to fix it. In many ways, he thinks that we never really learned the lessons of the Great Depression, including that for all of the risk that bankers put us in, the greatest risk may just be a government policy apparatus that will be happier with a political fix rather than a systemic one.