Joe Biden biographer Evan Osnos unpacks the DNC and Kamala Harris's nomination acceptance speech. Jaime Harrison, chair of the DNC, also breaks down the events in Chicago this week. Peter Friedman, Sydney Lemmon and Max Wolf Friedlich discuss their new play "Job" about the pitfalls of social media. Musician and producer Jack Antonoff talks about Taylor Swift, producing and his band, Bleachers.