Doesn't it seem implausible that in the world of Dune they reached their level of technology without AGI? Perhaps all their tech is pre Butlerian Jihad, but even that seems questionable. Seems like if it was adopted as a policy, there would have to be many gray areas where people pretend that they aren't really using AI - the ship's computer is just a domain specific finetuned version, after all, etc. Additionally, t…
So I agree, I don't see why thinking machines are a worse alignment problem than enhanced humans. See also the Wrath of Khan.
I try not to think too deeply about it, or I won't enjoy the story. How could a society have gravity suspensors, "shields", and lasguns, but no advanced computing capability somewhere? And why use swords/knives for fighting, when projectile weapons are so much more deadly? I still love the books, but I have friends who can't enjoy the Dune world due to its many contradictions.
Edit: I realize that "shields" supposedly made ordinary projectile weapons ineffective - but they had advanced drone technology (e.g. the assassin drone used against Paul, which was also stupid)