“This logic path that you devised-am I correct in thinking that you and Monitor 5 are the only Supervisors who were able to follow it without hitting a First Law conflict?”

“Yes.”

“Why? Why you?”

“My experience with human beings has provided me with a more sophisticated perspective on their nature and behavior.”

“You’ve had contact with other humans? Besides me?”

“Yes.”

“Who?”

“I am not permitted to say,”

Dead end. “Are the other robots even aware of what you asked me to try to do?”

“No.”

“How were you going to destroy the complex?”

“The material used to line all the tunnel walls contains an explosive. Once all the other Supervisors have been destroyed, the last Monitor and Analyst will together transmit the trigger signal. The resulting explosion should cause the entire excavated portion of the asteroid to subside.”

“I see,” Derec said. Great, he thought to himself. If I stay in the complex, the raiders will bring it down on my head. If I leave, the robots will blow it up under my feet.

Unless-

Unless there was some way to get off the surface, some source of thrust adequate to give him and his augment escape velocity. Considering the weakness of the asteroid’s gravity, escape velocity did not amount to much. He could probably put a ball in orbit just by throwing it as hard as he could. The leg servos of the augmented suit were likely powerful enough to permit him to literally jump clear.

Unfortunately, the safety regs on augment design required governors on the leg servos to prevent someone from trying exactly that. But what engineers had joined together, tinkerers could tear asunder-

At that moment, a bright flare seemed to appear on the body of the ship, and an instant later the energy beam burned out the eyes of the camera unit relaying the picture. Another camera some distance away took over, and the low angle at which it was focused showed not only the ship but the bilious clouds boiling off the surface where its weapons were trained.

The sight spurred Derec to action. “There doesn’t seem to be any escape for any of us,” he lied, wearing his best look of resignation. “I guess there’s nothing else for me to do but go prepare to die. I would be grateful if you could grant me privacy while I carry out the appropriate rituals.”

The lie passed. “I do not fully understand the purpose of such rituals,” the robot said, “but I will respect your privacy.”

Derec did not need long to put his rapidly developing plan in motion. Returning to his cabin, he swept up the pillows off two of the bunks, then ran to the airlock with them cradled in his arms.

“Open.”

The sound of the inner seal opening brought Analyst 17 out of the wardroom, but by then it was too late. Derec stepped inside the lock, and the door closed behind him.

“Cycle,” he said, fumbling with the straps of a breather.

When the outer door opened, he draped the pillows over the bottom sill of the hatch and then stepped out over them. Just as Derec had expected, the pillows kept the outer door from sealing, interrupting the cycle and imprisoning the robot inside. He did not know how long it would hold, whether there was some way for the robot to override the lock system, and he did not wait around to find out.

The line at the smelter included Supervisors, but they took no notice of him as he passed by. He rode the lift up to Level Zero, where he discovered that Monitor 5 had been busy taking precautions against his return. Two of the augments were missing, vanished as though they had never been there. The third was wedged against the wall by one of the tracked carriers, which in turn was barricaded in place by a four-legged auger unit.

He did not think the suit was damaged-tampering with safety equipment would almost certainly invoke the First Law-but it was going to take a little getting to. And part of the problem would be Monitor 5. The robot was seated at the console when Derec arrived, and rose and started for Derec the moment he stepped off the lift and placed it on standby.

Their paths intersected when Derec was a few meters short of the carrier. “The surface is a restricted area,” the robot said.

“I know that,” Derec said, circling and staying out of reach of the robot’s hands. “This equipment is improperly stored. I’m going to take care of it.”

But Monitor 5 was not going to be put off that easily.

“You may not leave. You are in no danger here,” it said, reaching for him.

Derec backed away and scrambled up the steps into the enclosed operator’s station. “Wrong. If I stay here, I’ll be killed when the ship destroys the station.”

“We will protect you.”

Derec wasted no time or breath arguing the point. “You can’t even protect yourselves,” he said, and slammed and locked the door.

The operator’s interface was standard, and the functions of those few controls which weren’t were clear at a glance. He touched the power switch, and the display came alive with information on the vehicle’s status. The most important item was near the bottom:

POWER CELL…100,000 Kw… OK

The robot was politely knocking on the window and trying to attract Derec’s attention, but Derec ignored it. With a touch on one of two small joysticks in the armrest at his right hand, Derec unshipped the small crane which lay crosswise behind the control cab.

Since the controls had been designed primarily for robots with their fine motor control, Derec found them a little touchy. But the crane was semi-automatic, so when he had managed to swing the boom out over the backend of the carrier and bring the auger in range of the crane’s camera, all he had to do was say, “Pick it up.” The crane handled the rest.

Monitor 5 seemed slow to realize what was happening. Derec couldn’t decide if that was because it was still experiencing some internal conflict, or if he was just seeing the difference between a Monitor and an Analyst. But when Derec lifted the auger off the floor of the chamber and began to swing it out of the way, the robot suddenly became agitated.

“Analyst 17 was in error,” it said, grasping the door latch and shaking violently. “Derec-you cannot escape. You cannot leave. I am required to protect you. I am responsible.”

Saying nothing, Derec used the dangling mass of the auger to brush the robot away from the side of the carrier and back it toward the wall. The robot’s protestations went up in volume, but Derec did not stop until he had gently pinned the robot against the wall ten meters to the left of where it had done the same to the augment.

“Reverse slow,” Derec said, and the carrier crawled away from the wall. “Stop. Standby.”

He jumped out and ran to the augment. As he wrestled the suit away from the wall, Monitor 5 was struggling to extricate itself. It was a race Derec had to win.

Finally the access door was clear, and Derec levered himself inside. At that moment, Monitor 5 clambered to the top of the auger, free from its makeshift prison. But it was too late to stop him. The access door was closing to seal Derec in the suit.

“Power on,” he said.

His next objective was the open control cab on the other side of the carrier, meant for use by workers in augments. But before he could reach it, Monitor 5 was again trying to block his way.

“I don’t want to harm you,” Derec said. “You can’t stop me. You’ve done your duty by trying. Now stand aside.”

“You are attempting to commit suicide. I am not required to comply with your orders under these circumstances.”

“I’m trying to save myself,” Derec said. “If you really want me to live, you’ll step aside and give me a chance.”

“I will take you to a safe place within the community-”

“There are no safe places here!” Derec shouted. “Don’t you understand?”

“I cannot allow-”

“I can’t stand here and debate it,” Derec said. “I’m sorry.”