So much going on in this chapter - thank you Av for tackling it.
A whole culture based on kill or be killed - making superb warriors. Fake ancient prophecies spread by the BG just in case any of their members ever might need help - meshing perfectly with the circumstances of the surviving Atreides.
The Fremen cultural dream of running water, plants, and paradise - that will completely destroy their culture in the long run.
A so-called primitive people that plays the Game of Thrones (to bring in the heads up life and death political power games in George R. R. Martin's fantasy novels) better than the ruling Great Houses, when they go behind the backs of their planetary rulers and make their own bargains with the Spacing Guild.
And Jessica's bitterness at the machinations of the BG - and her not realizing that she is doing a lot more than merely playing a role. With the spice saturated environment of the Fremen, makes you wonder if prescience has meshed with the centuries old BG preparations...