In the latest econtalk, Russ Roberts just speaks himself. The result may be my favorite of all of his podcasts. If you had just one hour to learn essential, basic economics, listening to this talk would be the way to do it. The core topic is the reasons for income variation across people and over time. It is organized around refuting the claim that rich people need to keep poor people down. Along the way, he takes on (although not by name) the four main biases that Bryan has found among non-economists: anti-foreign bias, make-work bias, anti-market bias, and pessimistic bias.