It’s only fair to pay homage to HAL9000, the original disobedient A.I. from ‘2001 A Space Odyssey’. But as we hurtle into the future, fiction is becoming fact, and it might one day soon be a serious question: ‘Can’t we just turn it off?’

Military A.I. designers, for example, and then Big Tech, and then A.I. itself(?) will surely be contemplating higher and higher degrees of autonomy, to ensure continuity under enemy attack? So the short answer is ‘Yes we can, until suddenly we can’t!