“Yes.”
“And the guidelines that are built into your definition of a human are simply shortcuts to make it unnecessary for you to subject everyone you encounter to a biological assay. The final criterion is DNA.”
“That is correct, Derec.”
“But you have no way of examining a person’s DNA directly.”
“No, sir.”
“Fine. You said that each of the anomalies in Aranimas’s appearance fell within the acceptable parameters for natural variation and mutation.”
“Yes, sir.”
“I ask you to calculate the probability that all of Aranimas’s anomalies would appear in a single organism.”
The robot scarcely hesitated. “The probability is extremely small.”
“And for Wolruf?”
“The probability is somewhat higher, but still on the order of one chance in ten to the fifteenth power.”
“In other words, there is less than a one in ten thousand chance that a mutation this extreme would have arisen once in all of human history. And here there are two of them, not only alive at the same time but in the same place, and both as different from each other as they are from me.”
“It is quite remarkable. No doubt further study of these individuals would be of great benefit.”
Derec sighed exasperatedly. “Listen, my thick-headed robot friend. Stop thinking one step at a time. Isn’t the probability that an independently evolved lifeform might be bipedal, bilateral, and oxygen-breathing greater than the probability that these creatures are mutant humans? Can’t Aranimas and Wolruf be intelligent without being human?”
“Yes, that is possible.” The robot paused, a sign of great activity in its positronic pathways. “However, since no independently evolved intelligent lifeforms are known, it is difficult to assign a probability to a specific form.”
“I challenge your premise,” Derec pounced. “Why are most robots humanoid?”
“Higher robots are humanoid because it is a successful generalized design and because-”
“The other reasons don’t matter,” Derec said. “Apply that standard to the question of Aranimas and Wolruf.”
Again the robot paused before answering. “My positromotive potentials are extremely high on both sides of the question,” it said at last. “I believe this state may be similar to that which a human describes as confusion.”
“Get to the point. What’s the verdict?”
“It is my tentative conclusion that Aranimas and Wolruf are not human.”
“You are not obliged by the First Law to protect them or the Second Law to obey them?”
“No, Derec.”
“Good,” he said with relief. “You can live. Now listen closely. I have some important instructions for you concerning our alien hosts-”
Chapter 11. Tampering
Within the greater world of the raider ship, Derec had been confined to one small island. As he prepared to begin his nocturnal wanderings, that island consisted of the route from the lab (in what he thought of as Hull L) to the dispensary and Personal (in Hull D). Linking the ends of the trail were two sections of storage corridor forming a short transfer tunnel between the hulls. And that was all Derec knew.
He did not know where the lab was in relation to Aranimas’s command center, though he felt certain that it was some distance away. For that matter, he did not know the way to any of the other places he had been-the hull where he had seen the star-creatures, the corridor in which he had awoken, the hold from which the salvage team had operated, the section of lockers where the robot parts had been stored. He did not know where Wolruf slept, or where the fifty Narwe were most likely to be found.
The corridor to the dispensary was also the only part of the ship which he had explicit permission to be in. Aranimas had not forbidden him to roam farther afield, but neither had he invited it. It seemed to Derec as though it might be some kind of test. The problem was, he didn’t know whether he would fail through action or inaction: by exploring, or by staying close to home.
In the end, Derec set aside his uncertainties with the thought that it was always better to know more than to know less. If Aranimas found out and objected, Derec could always offer the excuse that he was scouting for places and tasks to test the robot.
The ranks of closed lockers in the transfer tunnel had been gnawing at his curiosity for nearly two days, and he started by opening all that were within his reach. He did not know exactly what he had expected to find, but the fact that more than half the lockers were empty came as a surprise.
Those that were full contained some recognizable objects, such as bolts of the cloth from which the Narwe clothing was made, replacement electrodes for the microwelder in the lab, and vacuum-sealed food stores. A few of the lockers were either jammed or locked-Derec could not determine which.
Just as he was finishing in the section closest to the dispensary, one of the false-horned Narwe entered through the single side door. Startled, Derec jumped guiltily, then froze. Without making any sign of acknowledgment Derec could recognize, the alien turned its back and left by the lab-end door, saying nothing.
Alone again, Derec felt foolish, for he had every right to be there and the alien had seen nothing incriminating. But his heart raced as though he had been caught by Aranimas himself. He was not worried about the Narwe trying to stop him, since he was confident that he could be at least as intimidating as Wolruf.
But there was always the chance a Narwe, perhaps hoping to curry favor, would carry a tale to Aranimas and bring him investigating. Since Derec did not want to give Aranimas reasons to mistrust him, he decided he would have to forego rummaging through the lockers, at least as long as there were still Narwe afoot. It was the one activity his excuse would not cover.
Derec next took up a fuller exploration of the two hulls he had ready access to. Three doors down from the Personal in Hull D, he found a compartment containing five deep-cushioned chairs arrayed in a circle and facing inward. At the center of the circle was a pale white globe mounted on a black cylindrical base. The globe was so large that Derec’s arms could reach barely halfway around.
But finding did not mean understanding. For all he could divine, the globe could as easily be a religious totem as a communications device, and the compartment as easily a sanctuary as a bridge.
And there was no point in risking his position just to multiply his ignorance. So for the second time in half an hour, Derec altered his strategy. All that mattered was rediscovering the route back to Hull A-Aranimas’s quarters-and to Hull T, where the transfer bay and perhaps his augment could be found. Nothing else was of any consequence whatsoever.
There were five exits from the deck of Hull D, two from Hull L, and two from the transfer tunnel. He considered simply taking one and following it wherever it led, but he did not trust himself to find his way back.
Instead, he worked at expanding the boundaries of his known world slowly. Each time he opened a new door and started off on an unfamiliar corridor, he would turn left and then left again as soon as possible in the hopes of returning in a loop to some part of the world he knew. Only when he had memorized each of those additions would he take a branch off a branch.
The first time, his strategy worked. The side door in the transfer tunnel led him, three turns later, to Hull L, one deck down from the lab. Despite the fact that he sighted two Narwe along the way, the success gave him a rush of confidence.
But then it began to get messy. The other exit from the lab level of Hull L went on through seven sections with no side branches. Possibly it went on still farther, but Derec would never know, since he grew timid and turned back.
One of the exits from Hull D led down a sloping ramp into a weapons turret occupied by one of Aranimas’s kin and a Narwe-another hasty retreat. Another, farther aft, led to one of the hexagonal junction points. He chose a door at random and found himself in another junction.