until a jihad is ignited. This crusade against the machines lasts for nearly a century, with much loss of human life but ultimately ending in human victory. The Corrino-led Imperium The ancient Battle of Corrin—occurring 20 years after the end of the Butlerian Jihad—spawns the Padishah Emperors of House Corrino, who rule the known universe for millennia by controlling the Sardaukar, a brutally efficient military force. Ten thousand years later, Imperial power is balanced by the assembly of noble houses called the Landsraad, which enforces the Great Convention's ban on the use of atomics against human targets. Though the power of the Corrinos is unrivaled by any individual House, they are in constant competition with each other for political power and stakes in the omnipresent CHOAM company, a directorship that controls the wealth of the entire Empire. The third primary power in the universe is the Spacing Guild, which monopolizes interstellar travel and banking. Mutated Guild Navigators use the spice drug melange to successfully navigate "folded space" and safely guide enormous heighliner starships from planet to planet instantaneously. The matriarchal Bene Gesserit possess almost superhuman physical, sensory, and deductive powers developed through years of physical and mental conditioning. While positioning themselves to "serve" humanity, the Bene Gesserit pursue their goal to better the human race by subtly and secretly guiding and manipulating the affairs of others to serve their own purposes. By the time of Dune, they have secured a level of control over the current emperor, Shaddam IV, by marrying him to one of their own who intentionally bears him only daughters. The Bene Gesserit also have a secret, millennia-long selective breeding program to bolster and preserve valuable skills and bloodlines as well as to produce a theoretical superhuman male they call the Kwisatz Haderach. When Dune begins, the Sisterhood are only one generation away from their desired individual, having manipulated the threads of genes and power for thousands of years to produce the required confluence of events. But Lady Jessica, ordered by the Bene Gesserit to produce a daughter who would breed with the appropriate male to produce the Kwisatz Haderach, instead bears a son—unintentionally producing the Kwisatz Haderach a generation early. "Human computers" known as Mentats have been developed and perfected to replace the capacity for logical analysis lost through the prohibition of computers. Through specific training, they learn to enter a heightened mental state in which