Brian O'Kelley O'Kelley is CEO of AppNexus. The organizational theorist Geoffrey Moore once argued that “without big data, you are blind and deaf and in the middle of a freeway.” But without human intelligence, all the data and machine learning in the world won’t set you free. Moore’s freeway analogy is in fact more apt than he knew. In 2011, John Gass, a Massachusetts resident with a stellar driving record, received an automated notice informing him that his license had been revoked, effective immediately. It turned out that the commonwealth’s motor vehicle agency used a facial-recognition program to scan its database in search of “fraudulent” licenses. In a perfect mishap, the algorithm powering