Evil artificial intelligences are luckily confined to fiction. Yet leading scientists claim that intelligent machines are 'the most serious threat facing mankind'. Are they right or could a mind free from human prejudices create a better world? Or is all talk of artificial intelligence a deluded fantasy?
Physicist Roger Penrose, computer scientist Nigel Shadbolt and novelist and digital age icon Warren Ellis consider the threat of intelligent machines. Gabrielle Walker hosts. Sponsored by Wired.