Don't worry about AI going bad – the minds behind it are the danger John Naughton

As the science fiction novelist William Gibson famously observed: "The future is already here – it's just not very evenly distributed." I wish people would pay more attention to that adage whenever the subject of artificial intelligence (AI) comes up. Public discourse about it invariably focuses on the threat (or promise, depending on your point of view) of "superintelligent" machines, ie ones that display human-level general intelligence, even though such devices have been 20 to 50 years away ever since we first started worrying about them. The likelihood (or mirage) of such machines still remains a distant prospect, a point made by the leading AI researcher Andrew Ng, who said that he worries about superintelligence in the same way that he frets about overpopulation on Mars. That seems about right to me.