The best part of Dune (the original book) is that Herbert built his world, his universe, his history with so few words. He did it through implication and just a few prompts, making his readers fill in the (vast) blanks.
Dune, more than most novels, is a forced exercise of the imagination.
A lesser writer would have lost himself in endless exposition.
The irony of it all....Herbert built his fortune on the reimagined uses of worm excrement....someone somewhere in the infernal regions was laughing at the foolishness of humans to so quickly part with their money. Obama used the same technique...vague positive generalities and open happy happy promises while castigating “enemies” by stoking voters’ paranoia with broadly general negative descriptives...and fools just filled in the blanks!