The greater good scenario is looking better and better. In fact, I’d argue that from a legal, moral, and ethical standpoint, it’s the only viable option. It’s terrifying to think that your robot chauffeur might not have your back, and that it would, without a moment’s hesitation, choose to launch you off that cliff. Or weirder still, concoct a plan among its fellow, networked bots, swerving your car into the path of a speeding truck, to deflect it away from a school bus. But if the robots develop that degree of power over life and death, shouldn’t they have to wield it responsibly?