A talk with David Foster, who writes about polarization and media at knowthesystem.org and is the author of "Moderates of the World Unite!: Reworking the Political Media Complex." Topics discussed include: the optimal approach for reducing toxic political polarization (cultural change vs systemic changes); the difficulty of making any changes in a polarized, high-animosity environment; the ideas in David's book for improving the media environment and political discourse.Support the showTo get ad-free episodes, and more, get a premium subscription. To learn more about the show, go to behavior-podcast.com. I'm on Twitter at @apokerplayer. See a summary of my work.