This is actually one of the big threat for humans. Don't get me wrong, I think AI's are really interessting, but many scientists says, that it could be bad for humankind, if AI gets to far.
Scientists should watch out! But you know, humans are greedy and bribery is the key for some powerful people. So the technology / AI's could get to the wrong hands and/ or makes itself independent. This independence is only a matter of time anyway.