DJ Patil, America's first Chief Data Scientist, talks about his nearly two years in the White House’s Office of Science and Technology Policy, working on initiatives around health care and policing. Patil grew up in Silicon Valley, and has worked at Skype, LinkedIn and eBay; he says that techies in the private sector should consider a "tour of duty" in the government to be one of their civic duties. He says opening up the vast amounts of data collected by government agencies can make everyone better-off — as long as personal data like health records can be properly secured.

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