On health care: leave on one side the virtual impossibility of achieving single-payer. Beyond the politics, the Sanders “plan” isn’t just lacking in detail; as Ezra Klein notes, it both promises more comprehensive coverage than Medicare or for that matter single-payer systems in other countries, and assumes huge cost savings that are at best unlikely given that kind of generosity. This lets Sanders claim that he could make it work with much lower middle-class taxes than would probably be needed in practice.

To be harsh but accurate: the Sanders health plan looks a little bit like a standard Republican tax-cut plan, which relies on fantasies about huge supply-side effects to make the numbers supposedly add up. Only a little bit: after all, this is a plan seeking to provide health care, not lavish windfalls on the rich — and single-payer really does save money, whereas there’s no evidence that tax cuts deliver growth. Still, it’s not the kind of brave truth-telling the Sanders campaign pitch might have led you to expect.