Professor Stephen Hawking has received a major upgrade to his computer-generated speech system. The 72-year-old says he fears the development of full artificial intelligence could spell the end of the human race. Intel has provided Hawkings computer-based communication system since 1997 and has been replacing his computer every two years Intel redesigned the software Hawking uses; SwiftKey has been working for two years to come up with a new text-prediction system specially designed for Hawking.”]