Should machines have a concrete Mr Spock-like regard for logic or are there times when the best decision is a more human one?

Ian Sample takes a look at the future of machines - not the dystopian nightmares of science fiction but the real challenges and big wins that might come with ever-smarter robots.

He’s joined by Paul Newman, professor of Information Engineering and head of Oxford University’s Mobile Robotics Group, and Joanna Bryson, who studies natural intelligence and robot ethics at the University of Bath.