Earlier in the month, the former IMF chief economist Raghuram Rajan took a swipe at indirect housing subsidies, which gave Paul Krugman an excuse to pontificate on the relative innocence of Fannie Mae and Freddie Mac in creating the housing bubble. (Republicans, it seems, are more inclined to blame Fannie and Freddie and their liberal patrons for the financial crisis than Wall Street, K Street or themselves). Not to be outdone, Charles Lane, the veteran Washington Post columnist, gave Krugman’s argument a long cool look. We kinda think Lane won this round. But whatever you think, we’re guessing you’ll find it a pleasure to see these smart, well-informed policy nerds duking it out in public.