Response to Bernanke On the Bubble Versus Financial Crisis Story of the Great Recession

Ben Bernanke responded to Paul Krugman's post last week, which agreed with my argument that the main cause of the Great Recession was the collapse of the housing bubble rather than the financial crisis. Essentially, Bernanke repeats his argument in the earlier paper that the collapse of Lehman and the resulting financial crisis led to a sharp downturn in non-residential investment, residential investment, and consumption. I'll let Krugman speak for himself, but I see this as not really answer...