Interesting People - Stephen Hawking,

Renowned physicist, Professor Stephen Hawking, has warned that, quote: "The development of full artificial intelligence could spell the end of the human race,"

(His main worry is that super-smart machines could leave humans floundering, and they could find human affairs totally unimportant, and may even begin to view humanity as a hindrance.
Before you dismiss this as science fiction, Google has set up an ethics board to oversee its work in artificial intelligence.

It reminds me of this joke: Artificial Intelligence stands no chance against Natural Stupidity.)