“U.S. dynamism is in the dumps: Americans are less likely to switch jobs, move to another state, or create new companies than they were 30 years ago (or 100 years ago). What’s going on?” The always interesting Derek Thompson takes a crack at answering that question, and debunks a few of the answers that seem most obvious.

+ CityLab: San Francisco’s Increasing Dominance Over U.S. Innovation. Aside from the occasional pause, we’re always having a gold rush. But don’t come out here. We’re full.