Guilde spatiale
By the events of "Dune", the spice is used all over the universe and is a sign of wealth. Duke Leto Atreides notes that of every valuable commodity known to mankind, "all fades before melange. A handful of spice will buy a home on Tupile." Jon Michaud of "The New Yorker" wrote: "Imagine a substance with the combined worldwide value of cocaine and petroleum[,] and you will have some idea of the power of melange." Due to the rarity and value of melange and its necessity as a catalyst for interstellar travel, the Padishah Emperor's power at the outset of "Dune" is secured by his control of Arrakis, which puts him on equal footing with both the assembly of noble families called the Landsraad and the Spacing Guild, which monopolizes interstellar travel. Seizing control of the planet, Paul Atreides intensifies this form of hydraulic despotism by asserting control over both the Landsraad and Spacing Guild, as well as other factions in the universe. Herbert wrote: