The arc of innovation has reached aninflectionpoint: technological change now threatens to overwhelm us. Discovery is unstoppable, but it must be shaped for good. We ourselves—not just market forces—must manage it. WIRED OPINION ABOUT Ash Carter, former US Secretary of Defense, is the Director of Harvard Kennedy School’s Belfer Center for Science and International Affairs and its project on Technology and Public Purpose. He is also an Innovation Fellow at MIT.

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