The famous theoretical physicist Stephen Hawking has revived the debate on whether our search for improved artificial intelligence will one day lead to thinking machines that will take over from us.
The British scientist made the claim during a wide-ranging interview with the BBC. Hawking has the motor neurone disease, amyotrophic lateral sclerosis (ALS), and the interview touched on new technology he is using to help him communicate.
It works by modelling his previous word usage to predict what words he will use next, similar to predictive texting available on many smart phone devices.

British theoretical physicist professor Stephen Hawking speaks to members of the media at a press conference in London on Dec. 2, 2014. Justin Tallis/AFP/Getty Images