Politicians often avoid the most beneficial policies because they lack the political courage or skill to introduce them.

courage Acting despite fear: whether it waits for the fear to go, how it is built, and why so few people show it.

government What states are for and what they are worse at than markets and networks: legitimacy, moral hazard, and who may be entrusted with power.

politics How people actually hold political views: tribes, partisanship, and whether anybody reasons their way in.