 The first time Rikud feels pain or discomfort is when
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. 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. For a whole week that view did not change, and Rikud had come to accept it as fact. If he, Rikud, walked from one part of the world to another, it was with a purpose—to eat, or to sleep, or perhaps to bathe in the health-rays.
 the light he peered into was too bright, and his eyes hurt as a result.
 the light he peered into was too bright, and his eyes hurt as a result.  he tried to hit his head intentionally.  he experienced hunger for the first time.  he hits his head and bleeds for the first time.