In this Trumpcast Plus preview, Virginia Heffernan talks to Wired columnist Siva Viadhyanathan about his piece on Mark Zuckerberg; and, later in the show, she speaks with New York Times Magazine writer Matthatias Schwartz about his profile of William Barr. Only Slate Plus members get to listen to every Trumpcast episode in full. Sign up now to access every Trumpcast episode and support the show. Learn more about your ad choices. Visit megaphone.fm/adchoices