Margrethe Vestager: 'This is the biggest wake-up call we've ever had'

Margrethe Vestager, Europe's commissioner for competition, talks with Recode's Kara Swisher in front of a live audience at Web Summit 2017 in Lisbon, Portugal. Vestager explains how the E.U. is trying to make tech companies more transparent and accountable for their dealings and why a "free" market needs government intervention to function. She says the algorithms that control what content gets surfaced on social media may "have to go to law school" before we can trust them again, and that Facebook or Snapchat's priorities cannot be allowed to supersede democracy's.

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Decoder is a show from The Verge about big ideas — and other problems. Verge editor-in-chief Nilay Patel talks to a diverse cast of innovators and policymakers at the frontiers of business and technology to reveal how they’re navigating an ever-changing landscape, what keeps them up at night, and what it all means for our shared future.