My point is that AI doesn’t need to have any idea what it’s doing—it doesn’t need to have sentience etc.—to produce unexpected output and be very dangerous. Facebook AI only has the tool of matching users with news or posts. So I suppose the worst that can happen is that users get matched with the worst posts (sometimes injected by bad actors) in a systematic way. Bad enough. Give an AI more capabilities—browse the web, provide arbitrary information, perform physical actions, be controlled by users with different intents—and much worse things can happen. There’s a textbook (extreme) example of an AI being tasked to eradicate cancer that launches nuclear missiles and kills everyone, as that is the fastest cancer cure. Even that AI wouldn’t need to have sentience, just more capabilities. Note this does not equate to more intelligence.