Washington Post reporter Ezra Klein has a thoughtful piece in The New Yorker this week that walks through the psychology and politics of how Republicans pulled a 180-degree turn in their position on the individual healthcare mandate. Klein’s argument revolves around several of the forms of motivated reasoning that I’ve discussed here over the past few weeks, including how partisans reflexively dislike whatever their opponent proposes and how we construct our ideals of fairness based on whatever suits our current purposes.