 What happens when Rikud grows violent when the others don't believe him.
When nobody aboard ship remembers where it's going, how can they tell when it has arrived? But ever since the engines somewhere in the rear of the world had changed their tone, from the steady whining Rikud had heard all twenty-five years of his life, to the sullen roar that came to his ears now, the feelings had grown. But it came again, and each time it left him with a feeling he could not explain. Rikud knew that something which he could not explain had entered the elder man's head for a moment, but it had departed almost before Chuls knew of its existence. Rikud had been stopped in this action, although there was no real authority to stop him. There had been a revolt—again a term without any real meaning, a term that could have no reality outside of the reading machine—and the elders were overthrown. The people had decided that they did not know where they were going, or why, and that it was unfair that the elders alone had this authority. Much of this Rikud could not understand, but he knew enough to realize that the reading machine had sided with the people against the elders, and it said the people had won. But when, in another ten years, Chuls would perish of old age, the rays would no longer suffice. Rikud often thought of his own death, still seventy-five years in the future, not without a sense of alarm. True, this was the only case of its kind, the exception to the rule, but it proved the world was not perfect. But if he wasn't reading himself, Rikud usually went to sleep. "Astronomy says some stars are variable," Crifer offered, but Rikud knew his lame-footed companion understood the word no better than he did. Over on Rikud's right, Chuls began to dress. "Variability," he told them, "is a contradictory term. Variability and change are two words without meaning." Chuls hadn't even seen the connection between the two concepts, yet it was so clear. Rikud looked and looked until his eyes teared and he had to turn away. Rikud couldn't remember, and he suddenly wished he could read Crifer's book on astronomy, which meant the same as stars. Chuls' voice trailed off again, impotently. Rikud turned again to the port, where he could see nothing but an obscuring cloud of white vapor, murky, swirling, more confusing than ever. Anger welled up inside Rikud.
 They all start to do it, because they've never seen violence before and don't understand it.
 They start grabbing at one another to deescalate the situation.  They all start to do it, because they've never seen violence before and don't understand it.  Confusion breaks out.  Everyone grows fearful and watches what Rikud does.