A book by Maro Ghappato published by Diana: Synonym. It states that Bene Gesserat males, primary defenders of the culture, were unable to function efficiently in battle when they could feel the immediate pain of their wounded or captured companions. The men's conscious participation in birth pangs tended to produce impotence, thus preventing the reproduction of male bearers with dominant active genes. The book was not a part of the Rakis Hoard.