Commentary: Do Bernie Sanders supporters think he'll actually keep any of his promises?

If I promised to give you everything you ever wanted, you'd want to know whether I could actually deliver it, wouldn't you? Especially if you've heard a lot of promises from people like me over the years, and we had a long and well-documented history of failure?

This is what puzzles me about Sen. Bernie Sanders (I-Vt.), whose presidential campaign consists largely of promises he cannot reasonably be expected to fulfill. Are we so inured to the idea of politicians laying