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It’s not a demo, more of a philosophical argument: Why did Sergey Brin and his team at Google want to build an eye-mounted camera/computer, codenamed Glass? Onstage at TED2013, Brin calls for a new way of seeing our relationship with our mobile computers — not hunched over a screen but meeting the world heads-up.

Sergey Brin is half of the team that founded Google. Now he’s leading the development of special projects like Google Glass.