Jim, your column today is excellent. Truly fine. But I actually think you give Chait too much credit. His hyperbolic nonsense is further evidence of a pathology gripping not just the left but most of the weak remnants of the center-left, a pathology that makes its sufferers utterly unable even to imagine that their philosophical opponents have any motives that aren’t pure evil or just plain nuts — and that therefore gives them, in their own minds, the right to level any smear at those on the right, no matter how vile the smear, because, after all, (they tell themselves), they are on the side of right and justice and of saving civilization itself. Those ends justify any means, any smears, any exaggerations, any hypocrisy, anything at all. The sheer nastiness that emanates from Chait and so many of his compatriots is mind-boggling, and in a better age it would not be fit for polite company, much less a once-respected magazine.
Oh, and besides that, as you point out so well, Chait ignores a veritable googleplex of boatloads of evidence that supply-side economics actually works.