Journalist and author Jonathan Rauch talks about his book  The Constitution of Knowledge with EconTalk host Russ Roberts. Rauch argues that the constitution of knowledge--the norms and institutions for testing the reliability of new ideas and accumulating knowledge--has been dramatically altered by the internet and social media. Along the way, they discuss epistemology, the parallels between journalism and the sciences, the waning of religion, the value of new ideas, tribalism, and how incentives affect journalists who want to pursue truth.