Don't worry about artificial intelligence taking over the world and endangering humans -- at least not to start with, said Demis Hassabis, the head of Google's AI project. Hassabis, CEO of Deep Mind, a British business Google bought in 2014, said he has rebuked the likes of Microsoft founder Bill Gates and SpaceX and Tesla founder Elon Musk for their comments on AI, the Times of London reported Monday. AI is the theory and development of computer systems that can perform tasks that mornally take human intelligence. "I don't think it's very helpful for other people who are incredible in their domains commenting on something they actually know very little about, but because they are quite big celebrities now, more than just scientists or businessmen, it gets picked up a lot," he said at a Cambridge Society for the Application of Research event. He said the "general meme of fearfulness doesn't help reasoned debate.