John Heilemann sits down with President Biden's first White House press secretary, Jennifer Psaki, who recently left the administration to join MSNBC as a political analyst and host of a new show that will launch next year on Peacock. Psaki discusses how no one was more surprised than her to see her regular smackdowns (aka, #psakibombs) of reporters trading in bullshit or bad faith, most notably Peter Doocy of Fox News, turn into a social-media sensation. She also talks about her struggles with imposter syndrome — her recurring worry that she wasn't really qualified for any of the jobs she's done so well.