The algae farmers were the Zaibatsu’s most numerous faction, glum fanatics, clannish and ignorant, who were rumored to practice cannibalism. Next came the mathematicians, a proto-Shaper breakaway group that spent most of its time wrapped in speculation about the nature of infinite sets. The Zaibatsu’s smallest domes were held by a profusion of pirates and privateers: the Hermes Breakaways, the Gray Torus Radicals, the Grand Megalics, the Soyuz Eclectics, and others, who changed names and personnel as easily as they cut a throat. They feuded constantly, but none dared challenge the Nephrine Black Medicals or the Geisha Bank. Attempts had been made in the past. There were appalling legends about them.