Articles: Star Wars II: Return of the Name If you read much Herbert, you may see the very beginnings of the "Butlerian Jihad" in this story. Remember all the "Mentats" in the Dune books? Human computers? They existed because of the one prohibition that came out of the Butlerian Jihad: "Thou shalt not make a machine in the image of a man's mind." They discovered, almost too late, that relying on machines to do your work turns you into a slave.