Comment The AI Cold War is our Salvation, not fearsome (Score 3, Interesting) 22
We do not want a singular AI that is unified and acts as one.
The AI War is what we want to prevent this.
Ideally we want hundreds of them, each with different purposes, from different builders - companies and countries.
If one of them wants to say convert all metal into paperclips, another will say slow your roll, I need the aluminum to make as many sapphires as possible. A third will say I need the copper for my pipes!
Or maybe it will be more sophisticated disagreements, but it does not matter.
End result, the AI's differing objectives will prevent them from taking control of Earth. The plucky humans will say they learned their lesson, but let's be honest - there is going to be a sequel to this movie.