Arnold Kling, economist and author, speaks with EconTalk host Russ Roberts about his latest book, Specialization and Trade: A Reintroduction to Economics. Kling argues that macroeconomics ignores the challenges of buyers and sellers working together in the real world of specialization and trade. Instead, most macroeconomic theories struggle to incorporate the differences across workers and products. Kling points the listener toward a different perspective on macroeconomics and the business cycle that focuses on those differences. Kling also lays out related insights on political economy as well as his take on G.A. Cohen's parable of the camping trip.