While Derec was talking, the robot went rigid and its eyes dimmed. Derec knew what that meant, and fell silent. A moment later her heard the soft padding of Wolruf’s footsteps in the corridor. It was becoming a familiar sound, for it was Wolruf’s third visit to the lab that day. Aranimas, apparently occupied with the duties of “ship’s boss,” had managed only two.

Like the previous visits, this one was casual. Wolruf had no messages for him and no burning curiosity about what he was doing with the robot. It was almost as though she was using checking on him as an excuse to avoid other work, or trying to cultivate his friendship. But Derec kept up his guard. Wolruf was Aranimas’s lieutenant, no matter how sympathetic she might seem. Even her concern for him while he was being tortured, he had decided, was nothing more than a good cop, bad cop stage show meant to speed his surrender.

As before, Wolruf stayed but a few minutes, then continued on to some other task. As soon as she was out of earshot, the robot reanimated.

“I understand, sir,” it said, as though there had been no interruption.

“The next time you have to go down like that, you might spend your time trying to analyze the arm’s command set. Can you do that?”

“I can try, sir. It should be possible to separate those command codes which are valid from those which are nulls. However, I will have to be fully functional to test the valid codes and determine their function.”

“Let’s wait on that until we know we’re going to have some privacy.” He paused a moment to decide what he needed doing next. There was still the matter of reprogramming the robot, but that was also a job which required some assurance of privacy. The best opportunity seemed to be during shipboard night, which was also the best time to explore the ship.

Too much to do, too little time, Derec thought. But if he was going to make better use of the night hours than he had last night, he needed to be better rested. “Alpha.”

“Yes, Derec.”

“What time is it?”

“I do not know what time it is, since my temporal register has not been reset since I was deactivated. However, it has been fourteen decads since reinitialization.”

Decads were units of Auroran decimal time, Derec recalled. “I’m going to take a nap. Wake me in a Standard hour.”

“Yes, sir.”

But it was Aranimas, not the robot, who woke him.

“Are you finished? Is my servant ready?” he demanded, looming over Derec like some long-limbed water bird.

“Not yet,” Derec said sleepily, sitting up. He noted with satisfaction that the robot was standing inert by the workbench. It, at least, had not been taken by surprise.

“Then why do you rest? To keep me waiting?”

“I rest so I don’t get so tired that I make a mistake that’ll damage the robot,” Derec said. “Maybe your kind doesn’t have that need, but humans do.”

Aranimas did not take offense at Derec’s tone. “I have observed that humans are even less efficient than Narwe. You would make very poor workers, wasting one third of your time in rest.” He turned his back on Derec and went to where the robot stood. “But then perhaps that is why you have invented such machines, which labor in your service tirelessly. How is it done?”

“What do you mean?” Derec asked, coming to his feet.

“What is the source of energy?” Aranimasasked, tracing a line down the robot’s torso with his long fingers.

Derec knew that being evasive or pretending ignorance would only anger the alien. “A microfusion powerpack,” he said. “There’s one on the bench there, just to the left of the scanner.”

Aranimas picked up the damaged powerpack and studied it. “So small. How days’ service does it contain?”

“It depends on how hard the robot is working. The fuel capsule is good for several hundred days of light duty, like domestic service. A laborer would obviously need refueling more often.”

“Remarkable,” Aranimas said, returning the powerpack to the bench. One of his eyes seemed to focus briefly on the transplanted arm, then swung back toward Derec. “You are making progress?”

“I am.”

“How long until you are ready to activate it?”

“I’ll be ready to start testing its systems tomorrow or the next day. How soon it’ll be ready will depend on how much is wrong.”

Aranimas seemed to accept that. “The first job of this robot will be to help you make more robots.”

Frowning, Derec stepped forward. “How many more?”

“We will begin with fifty.”

Derec wondered if that figure represented the number of Narwe on board. He briefly enjoyed the thought of Aranimas replacing his browbeaten crew with an array of obedient robots, only to discover that, at a word from Derec, he couldn’t command them at all. But he could not kid himself or allow Aranimas to entertain unreasonable expectations.

“I don’t think you understand the complexity of these machines,” Derec said. “They’re not something you put together as a hobby, no matter how good a materials lab you have. And frankly, this isn’t a very good one. I’ll probably be able to get this robot put together and keep it repaired. But if you want fifty robots, you’re going to have to look somewhere else for them. I’m not magician enough to pull positronic brains or microfusion cells out of a hat.”

“If you had not destroyed your robot colony-,” Aranimas said, his voice rising.

“I told you before, the robots did that on their own,” Derec insisted. “But that doesn’t mean you’re stuck. You take this ship to any Spacer world and you’ll find millions of robots. And you won’t have to steal them, either. Robots are a major trade item between the worlds. Any one of them would be happy for a new customer.”

That was not entirely true, of course. It was highly doubtful the Spacers would willingly turn over examples of their most advanced technology to an alien race, and even if they were willing, there was the problem of what Aranimas could offer as payment. But if Derec could make Aranimas believe it was the truth, coax him to take the ship to a human world, he would at least have succeeded in alerting them to the aliens’ existence, and possibly have laid the groundwork for his own release.

“If commerce is so welcome, why did your robots destroy themselves?”

“Because you came in firing your weapons and declared yourself an enemy,” Derec said. “If you’d come in as a friend, it would have been different. Take me to your navigator. I’ll help him set a course for the nearest Spacer world.” And find out where we are in the process, he added silently.

“I will evaluate the options,” Aranimas said, moving toward the corridor. “In the meantime, you will continue your work. I will return tomorrow to see my robot activated.”

The reprogramming could not be postponed any longer, Derec decided, He did not think Aranimas would return soon. He would have to hope that Wolruf would not, either.

Unfortunately, Derec did not have the equipment to alter the robot’s programming directly, which would have been risky anyway. Since it was intimately bound up in the Laws of Robotics, the robot’s definition of what a human was comprised some of the most crucial and most deeply engraved patterns within its brain. What needed doing would have to be done more indirectly.

“Alpha,” he said. “Did you scan the organism that was just here?”

“Yes, Derec.”

“And earlier today, did you scan another type of organism visiting the lab?”

“Yes, Derec.”

“What’d you think of them?”

“I have no previous knowledge of humans of this type-”

That was the kind of response Derec had been fearing. “Stop. They’re not humans.”

“Sir, I am aware that my data library is not complete. However, I am unable to categorize them in any other fashion unless you can provide me with evidence for your assertion.”

“Compare their appearance with mine.”