Journalist and author Jonathan Rauch talks about his book The Constitution of Knowledge with EconTalk host Russ Roberts. People come up with ideas all the time. But the vast majority of these ideas aren't worthwhile. 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. The conversation explores the norms and institutions that once helped create a shared body of knowledge, how the internet threatens those norms and institutions, and what might be done to repair the damage.