[John S Mosby]

Absolutely— Dune paraphrases Islamic absolutism, the whole desert and “water brother” water rights, or the value of a human is in the amount of water they can have squeezed from them after death.

A kind of soylent green of water on a desert like and very much islamo Arabian desert culture. Same monomaniacal leaders like imama. And also a very techno group insulting to Catholic nuns (of higher orders btw, and the Mendelian monk orders) — the Bene Geserit mothers.

[Retrofitted]

The islamics didn't get portrayed all that well, if you'll recall.

SPOILER... OF A BOOK THAT'S AS OLD AS I AM... SO MAYBE NOT THAT MUCH OF A SPOILER

The Missionaria Protectiva used the prophesies of the Lisan al-Gaib to set-up the whole "12th iman" thing just in case a Sister needed to use it to survive (and therefore ended up with their messiah being the white, European kid with the hot mom).