Both agree but have to remember there are a couple other things in play.
One is that afterwards they have mentats so the ultra wealthy have access to something at least somewhat equivalent in function.
Second, while general AI (and arguably even general purpose CPUs) are banned they clearly have ultra advanced fixed function computing devices at ultra low prices everywhere. The Freman make still suits in their cave cities that are basically magic by modern standards so access to advanced fixed function computing and materials science is clearly essentially universal.
Yea I agree.
I can’t remember if the Brian Herbert books or just my own trying to resolve that in my own head but I feel like I ran across an attempt at resolving that saying that even world sized computer systems of the thinking machines still had worse results than the guild navigators since the navigators weren’t actually computing routes so much as using dune’s bizarre mental abilities like telepathy etc. to directly reach out and connect to the destination.
Actually that could even be from one of the movies and TV. Blurry memory on it.
Love Dune overall and very glad it is in the world of well known stories now with things like the warnings against charismatic leaders etc. but it still definitely has its flaws.