The robot flicked off the light and turned away. Jordan breathed with relief when he saw where it was going, toward the central repair depot to which all robots returned periodically. It would slide into a stall and stop. He would get off. And he would see to it that the robot was thoroughly checked over before it was called out again.

The entrance slot was extremely wide and equally low; it wasn't built for passengers on the robots. Momentarily the thought flashed across his mind that he should let himself be scraped off. But it seemed a precipitous way to dismount and anyway the machine would soon stop and he could get off more conventionally. Instinct won and Jordan flattened himself as they swept under the gate. He could feel the masonry twitching at his clothing.

The slot opened into a circular space in which other robots were stationed in stalls. In the center were bins of spare parts. Jordan called out, not too hopefully. Robots were assigned from here on a broadcast band; he didn't think there were facilities for responding to the human voice.

His machine headed toward a stall at the rear. This far from the entrance the light was dim. Jordan wondered why there was any light at all; robots didn't need it. Upon reflection he decided it was a concession to human limitations.

But the machine didn't slow down as he expected. It rumbled between walls, turned at a sharp angle—and the parking slot was not what it had seemed. They were in a passageway, narrow and even more dimly lighted. That it was lighted at all indicated it wasn't a chance fissure. It had been built long ago and forgotten.

This was serious. Where was the machine going and when would it stop? He hoped it would stop. An outcropping in the passageway loomed ahead of him; he flung himself flat. A sharp projection grazed his ear. The tunnel wound on through solid rock. He was lost by the time it ended.

There were no true directions on the asteroid. Toward the sun or away from it; toward the hospital or the rocket dome. These were the principle orientations and the main one had been left behind—the sun. He didn't know where he was except that it was somewhere under the main dome. He was sure of this because he was still alive. There was air.

The passageway terminated in a large cavern. Once he saw it he relaxed. It was a laboratory and a workshop and he knew whose. There was only one person who would disassemble nine general purpose robots and arrange their headpieces in a neat row on a stone slab. Their eyes revolved slowly as the machine rumbled farther in. He stared back; the intensity with which they gazed at him was uncomfortable. How long Nona had had this workshop he didn't know. Perhaps it was here she'd hidden from the guards.

Nine pair of eyes followed their progress as the machine rolled across the floor. Jordan glared back. He could see that they were not merely in a row, that they were hooked together by a complex circuitry that wove an indefinable pattern between them. The purpose was obscure.

A repair robot was an idiot outside the one thing it was built to do. A general purpose robot, the geepee, was a higher type. It was a moron. Were nine morons brighter than one? With men, not necessarily; stupidity was often merely compounded. But with mechanical brains, using modules of computation, the combination might constitute an accurate data evaluating system.