We as a country are trying to figure out what is true. Or more accurately, whether we can agree on what is true. In his inaugural speech this week, President Joe Biden called for a return to truth and an end to the deliberate spread of misinformation. That happens on social media platforms; in fact, it’s built into their business models, and misinformation influencers abound. But that’s not the only vector. Molly speaks with Kevin Roose, who covers social media for The New York Times.