I always though our biggest existential threat were Nukes and other WMDs. AI could potentially become yet another existential threat (especially if mixed with WMDs).

I would not fret over computers using AI to "see" or "hear" or even learn how to walk. I would start worrying the day computers start formulating judgments, I could not find any research in that direction. Anyone knows if such research exists?

On a more personal note, i can't say i agree with some people picking on Elon for formulating this opinion. Especially that it does not sound so unreasonable, really.