Elon Musk and Stephen Hawking have brought up the potential dangers of super intelligent AI several times over the past few years (Musk even donated $10 million toward cautious AI research), but now Bill Gates is also getting into the mix. In his Reddit "AmA" Q&A session today, Gates made it clear that he agrees with Musk's stance, which basically amounts to being very careful about how we approach the rise of intelligent machines:
I am in the camp that is concerned about super intelligence. First the machines will do a lot of jobs for us and not be super intelligent. That should be positive if we manage it well. A few decades after that though, the intelligence is strong enough to be a concern. I agree with Elon Musk and some others on this and don't understand why some people are not concerned.