One of the greatest strengths of Dune is its framing concepts. Frank Herbert was a master at justifying elements of his sci-fi reality with incredible narrative devices. Why does a culture that can travel faster than light fight with knives? Because everyone wears shields that block bullets, but slow-moving objects like air or knives can pierce them. Herbert extended this utility to his characters, creating fascinating orders like the Bene Gesserit to explain superpowers. The Suk doctors aren’t the most complex group, but they are a critical piece of the Dune universe.