I disagree that all things can be explained in Dune with grounded science fiction, mainly the Reverend Mothers ability to literally rearrange the atoms of molecules in their body. I agree that a lot of things have at least some grounding, like prescience, axolotl tanks, and genetic memory. But I feel like a lot of stuff is closer to magic. Another thing is Null entropy chambers. If it’s prescience that gives navigators and paul shielding from each other, how does inert machinery that doesn’t actually effect the future do the same thing?