"Atro had once explained to him how this was managed, how the sergeants could give the privates orders, how the lieutenants could give the privates and the sergeants orders, how the captains... and so on and so on up to the generals, who could give everyone else orders and need take them from none, except the commander in chief. Shevek had listened with incredulous disgust. "You call that organization?" he had inquired. "You even call it discipline? But it is neither. It is a coercive mechanism of extraordinary inefficiency--a kind of seventh-millennium steam engine! With such a rigid and fragile structure what could be done that was worth doing?" This had given Atro a chance to argue the worth of warfare as the breeder of courage and manliness and weeder-out of the unfit, but the very line of his argument had forced him to concede the effectiveness of guerrillas, organized from below, self-disciplined. "But that only works when the people think they're fighting for something of their own--you know, their homes, or some notion or other," the old man had said. Shevek had dropped the argument. He now continued it, in the darkening basement among the stacked crates of unlabeled chemicals. He explained to Atro that he now understood why the Army was organized as it was. It was indeed quite necessary. No rational form of organization would serve the purpose. He simply had not understood that the purpose was to enable men with machine guns to kill unarmed men and women easily and in great quantities when told to do so."