Below is a teaser. The full conversation is here. Nick Schulz and I discuss with him Too Big to Know, his new book.
Yes, there will be a podcast version. I just need a place to put it--my own web hosting service notified me that I have used up most of my bandwidth, mostly because over 1000 people have downloaded the Greve podcast.
During the podcast, the topic of "echo chamber" came up. If I had it to do over again, I would press David on his definition of the term. He implicitly defined it as any group of people with shared demographic characteristics and cultural norms. By that definition, many groups are echo chambers.
A better definition would be based on Bryan's ideological Turing test. If no one in your group can pass an ideological Turing test in describing an important opposing point of view, then you are in an echo chamber.