""Something seems to have happened to the life-support system, Dave.” Bowman took no notice. He was carefully studying the little labels on the logic units. "I think there's been a failure in the pod-bay doors," Hal remarked conversationally. "Lucky you weren't killed.” Bowman released the locking bar on the section labeled COGNITIVE FEEDBACK… "Hey, Dave," said Hal. "What are you doing?” He began to pull out the panel marked EGO-REINFORCEMENT. "Look here, Dave," said Hal, "an irreplaceable amount of effort has gone into making me what I am.” He started on the AUTO-INTELLECTION panel. "Dave," said Hal, "I don't understand…"