Harrigan and Davies discuss a wide range of issues: from the minimum wage to taxes, from gun control to government regulations, from the War on Terror to the War on Drugs to the War on Poverty. It turns out that coercion is necessary . . . sometimes. Even in a democracy, we all abide by rules, including plenty that we don’t agree with, in the name of getting along. But in the end, cooperation is the key to human happiness and progress. The more we encourage it, the better off we all are.