WHAT WE KNEWOn “epistemic closure,” the right, and the lessons of Tucsonhttp://www.washingtonmonthly.com/archives/individual/2011_01/027553.phpConservatives watched Fox News; they heard Limbaugh; and they read National Review the editorial page of the Wall Street Journal, and RedState; and they started drawing conclusions. The left was blaming Palin and the right for the tragedy, or so they