Chatterbots bid to show their human side in artificial intelligence test

Computers will be hoping to finally vanquish humans today, in a contest at Bletchley Park. No computer has ever triumphed at the Loebner Prize - a version of the Turing Test, first proposed by the computer scientist Alan Turing, who worked at Bletchley codebreaking during World War Two. Steve Worswick is the person behind Mistuku, a bot anyone can chat with online and which was judged the best system in the 2013 contest.