Jonathan Chait is one of the best liberal writers on fiscal matters, and James Capretta is one of the best conservative writers. That’s why it’s so instructive to compare and contrast these posts Chait and Capretta have written on Paul Ryan’s critique of Obamacare. Who’s more convincing? To me, it’s not even close. Chait titles his post “Paul Ryan Dubunks Himself,” but asserting it doesn’t make it so. One of Ryan’s supposed contradications or concessions is telling Ezra Klein that the federal government can’t be trusted to make modest cuts and therefore we’re headed toward bankruptcy. And this undermines Ryan’s case and demonstrates the plausibility of Obamacare how? Contrast Chait’s approach with Capretta’s thoroughness and care in dismantling the Orszag and DeParle op-ed the other day and you’ll see why liberals have been losing this debate.