Bonus: Kara and Kevin Roose Debrief on Chris Best

Kara’s conversation on Monday with Chris Best, the chief executive of Substack, hit on echo chambers, extremism and the future of journalism. Afterward, she called up the Times tech columnist Kevin Roose to discuss.You can find transcripts (posted midday) and more information for all episodes at nytimes.com/sway, and you can find Kara on Twitter @karaswisher. Subscribe today at nytimes.com/podcasts or on Apple Podcasts and Spotify. You can also subscribe via your favorite podcast app here https://www.nytimes.com/activate-access/audio?source=podcatcher. For more podcasts and narrated articles, download The New York Times app at nytimes.com/app. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.