This is sweet:
On Wednesday four former Democratic chairmen and chairwomen of the president’s Council of Economic Advisers — three who served under Barack Obama, one who served under Bill Clinton — released a stinging open letter to Bernie Sanders and Gerald Friedman, a University of Massachusetts professor who has been a major source of the Sanders campaign’s numbers. The economists called out the campaign for citing “extreme claims” by Mr. Friedman that “exceed even the most grandiose predictions by Republicans” and could “undermine the credibility of the progressive economic agenda.”
That’s harsh. But it’s harsh for a reason.
The claims the economists are talking about come from Mr. Friedman’s analysis of the Sanders economic program. The good news is that this isn’t the campaign’s official assessment; the bad news is that the Friedman analysis has been highly praised by campaign officials.
And the analysis is really something. The Republican candidates have been widely and rightly mocked for their escalating claims that they can achieve incredible economic growth, starting with Jeb Bush’s promise to double growth to 4 percent and heading up from there. But Mr. Friedman outdoes the G.O.P. by claiming that the Sanders plan would produce 5.3 percent growth a year over the next decade...
Sorry, but there’s just no way to justify this stuff. For wonks like me, it is, frankly, horrifying...
The point is that if you dismiss the likes of Mr. Krueger or Ms. Romer as Hillary shills or compromised members of the “establishment,” you’re excommunicating most of the policy experts who should be your allies.
So Mr. Sanders really needs to crack down on his campaign’s instinct to lash out. More than that, he needs to disassociate himself from voodoo of the left — not just because of the political risks, but because getting real is or ought to be a core progressive value.
Of course, this is coming from Krugman, a major league interventionist, so it doesn't have the full explosive power of a free market critique of Sanders. Krugman's value here is that he can get past the palace guards and unload on the socialist from close range, the damn op-ed page of The New York Times!