The cover story on The Economist 1843. "Artificial intelligence is outperforming the human sort in a growing range of fields – but how do we make sure it behaves morally? Simon Parkin meets the men trying to teach ethics to computers":

In 2017, this is an urgent question. Self-driving cars have clocked up millions of miles on our roads while making autonomous decisions that might affect the safety of other human road-users. Roboticists in Japan, Europe and the United States are developing service robots to provide care for the elderly and disabled. One such robot carer, which was launched in 2015 and dubbed Robear (it sports the face of a polar-bear cub), is strong enough to lift frail patients from their beds; if it can do that, it can also, conceivably, crush them. Since 2000 the US Army has deployed thousands of robots equipped with machineguns, each one able to locate targets and aim at them without the need for human involvement (they are not, however, permitted to pull the trigger unsupervised).

Public figures have also stoked the sense of dread surrounding the idea of autonomous machines. Elon Musk, a tech entrepreneur, claimed that artificial intelligence is the greatest existential threat to mankind. Last summer the White House commissioned four workshops for experts to discuss this moral dimension to robotics. As Rosalind Picard, director of the Affective Computing Group at MIT puts it: “The greater the freedom of a machine, the more it will need moral standards.”