Professor Alan Winfield - Bristol Robotics Laboratory

As research and development into artificial intelligence intensifies, is there any sphere of human activity that won't be revolutionised by A.I. and robotics? HARDtalk's Stephen Sackur speaks to Alan Winfield, a world renowned professor of robot ethics. From driving, to education, to work and warfare, are we unleashing machines which could turn the dark visions of science fiction into science fact?