Could a machine do something that human soldiers throughout the centuries have rarely done, but sometimes do to very important effect — to refuse to follow orders? I’m convinced that, if these weapons are developed, they’re not just going to be deployed by the United States and Sweden, they’re going to be deployed by dictatorships. They’re going to be deployed by countries that primarily see them as a way of controlling domestic unrest and domestic opposition. I imagine a future Bashar Assad with an army of fully autonomous weapons thirty years from now, fifty years from now. We’ve seen in history that one limit on the ability of unscrupulous leaders to do terrible things to their people and to others is that human soldiers, their human enforcers, have certain limits. There are moments when they say no. And those are moments when those regimes fall. Robotic soldiers would never say no. And I’d like us not to go there.