Should we worry about artificial intelligence?

Scientists at Facebook have been training robots to talk to each other in order to negotiate. Reportedly however, the bots in question have developed a language of their own - one we humans can't understand. It this something we should be worried about? Professor Zoubin Gharamani, who specialises in artificial intelligence at the University of Cambridge talks to the BBC's Rob Young. (Photo: The original T-800 Endoskeleton robot used in filming Terminator Salvation. Photo by Carl Court/ Getty Images)