MEGAN MCARDLE: “This is sort of impressive: Paul Krugman simultaneously castigates Republicans for the fiscal irresponsibility of wanting to extend tax cuts for the rich that cost about $700 billion–and for irresponsibly threatening the extension of tax cuts for the middle class which cost three times as much. Yet you could read the entire column and not realize that it’s the middle class tax cuts which are the really expensive, budget-busting bit.” Or you could just . . . skip the entire column and put your time to some productive or enjoyable use.