… politics determine who has the power, not who has the truth. - Paul Krugman

The Sanders campaign has brought out a lot of idealism and energy that the progressive movement needs. It has also, however, brought out a streak of petulant self-righteousness among some supporters. Has it brought out that streak in the candidate, too?

In short, the success of macroeconomic activism, in both theory and practice, has made it possible for free market microeconomics to survive--again both in theory and in practice.

Any interesting model of must exhibit a tension between two kinds of forces: "centripetal" forces that tend to pull economic activity into agglomerations, and "centrifugal" forces that tend to break up such agglomerations or limit their size.