And I wasn't thinking of letting AI run everything and evolve on it's own
Yep, I know. It was just one of the early ones I could find - the searches aren't very good here.
However, I think that AIs are already kind of running things, as a lot of what is done is data driven. This doesn't mean they are fed good data though. I have an article somewhere describing an AI that sits behind the president, and the human just says whatever the AI tells it to. That way, people would accept it :)
When it comes to knowledge work automation for repetitive tasks, the replacement of humans is already happening.