The sociologist Sudhir Venkatesh spent years studying crack dealers, sex workers, and the offspring of billionaires. Then he wandered into an even stranger world: social media. He spent the past five years at Facebook and Twitter. Now that he’s back in the real world, he’s here to tell us how the digital universe really works. In this pilot episode of a new podcast, Venkatesh interviews the progressive political operative Tara McGowan about her digital successes with the Obama campaign, her noisy failure with the Iowa caucus app, and why the best way for Democrats to win more elections was to copy the Republicans.