Dan Klein, of George Mason University, talks with EconTalk host Russ Roberts on truth in economics, bias, and groupthink in academic life. Along the way they discuss the Food and Drug Administration (and the drug approval process), the culture of academic life and the roles of empirical evidence and prediction markets in adjudicating academic disagreement. The conversation closes with a discussion of Econ Journal Watch--the watchdog journal Klein founded and edits--and an invitation to listeners to join a discussion of The Theory of Moral Sentiments by Adam Smith.