Andrew waited. He looked past Smythe-Robertson toward the wall, where a holographic portrait looked back at him. It showed a dour, austere female face: the face of Susan Calvin, the patron saint of all roboticists. She had been dead nearly two centuries now, but after having delved into her working papers as deeply as he had during the course of writing his book, Andrew felt he knew her so well that he could half persuade himself that he had met her in life.
Smythe-Robertson said finally, "A total replacement, you say? But what does that mean?"
"Exactly what I said. When you call in an obsolete robot, you provide its owner with a replacement. Well, I want you to provide me with a replacement for me."
Still looking confused, Smythe-Robertson said, "But how can we do that? If we replace you, how can we turn the new robot over to you as owner, since in the very act of being replaced you would have to cease to exist?" And he smiled grimly.
"Perhaps Andrew hasn't made himself sufficiently clear," interposed Paul. "May I try? -the seat of Andrew's personality is his positronic brain, which is the one part that cannot be replaced without creating a new robot. The positronic brain, therefore, is the locus of Andrew Martin, who is the owner of the robot in which Andrew Martin's positronic brain is currently housed. Every other part of the robotic body can be replaced without affecting the Andrew Martin personality-most of those parts, as you may know, have already been replaced, sometimes more than once, in the hundred-odd years since Andrew was first manufactured. Those subsidiary parts are the brain's possessions. The brain, at its option, can have them replaced at any time, but the continuity of the brain's existence is unbroken. What Andrew actually wants, Mr. Smythe-Robertson, is simply for you to transfer his brain to a new robotic body."
"I see," Smythe-Robertson said. " A total upgrade, in other words." But his face showed perplexity again. "To what kind of body, may I ask? You already are housed in the most advanced mechanical body that we manufacture."
"But you have manufactured androids, haven't you?" said Andrew. "Robots that have the outward appearance of humans, complete to the texture of the skin? That is what I want, Mr. Smythe-Robertson. An android body."
Paul seemed astounded by that. "Good Lord," he blurted. "Andrew, I never dreamed that that was what you-" His voice trailed off.
Smythe-Robertson stiffened. "It's an absolutely impossible request. Impossible."
"Why do you say that?" Andrew asked. "I'm willing to pay any reasonable fee, as I have for all the numerous upgrades you've given me up to now."
"We don't manufacture androids," Smythe-Robertson said flatly. "You have, though. I know that you have."
"Formerly, yes. The line was discontinued."
"Because of technical problems?" Paul asked.
"Not at all. The experimental android line was quite successful, actually-technically speaking. Their appearance was strikingly human in form, and yet they had all the versatility and ruggedness of robots. We used synthetic carbon-fiber skins and silicone tendons. There was virtually no structural metal involved anywhere-the brain, of course, was still platinum-iridium-and yet they were nearly as tough as conventional metal robots. They were tougher, in fact, weight for weight."
"Despite all of which, you never put them on the market?" Paul asked.
"Correct. We worked up about a dozen experimental models and ran some marketing surveys and decided not to go ahead with the line."
"Why was that?"
"For one thing," said Smythe-Robertson, "a line of androids would have had to be far more expensive than the standard metal robots-so expensive that we would have had to regard them purely as luxury items, with a potential market so limited in size that it would take many years for us to be able to amortize the expense of setting up a production facility. But that was only a small part of the difficulty. The real problem was negative consumer reaction. The androids looked too human, you see. They reawakened all the ancient fears of making real humans obsolete that had caused us so much trouble two hundred years ago. It made no sense for us to open all that psychotic nonsense up again simply for the sake of setting up a line that was doomed from the outset to be unprofitable anyway."
"But the corporation has maintained its expertise in the area of making androids, has it not?" Andrew asked.
Smythe-Robertson shrugged. "I suppose we still could make them if we saw any sense to it, yes."
"You choose not to, though," said Paul. "You've got the technology but you simply decline to exercise it. That's not quite the same thing as what you told us before, that it would be impossible to manufacture an android body for Andrew."
"It would be possible, yes-technically. But completely against public policy."
"Why? There isn't any law that I know of against making androids."
"Nevertheless," Smythe-Robertson said, "we don't manufacture them and we don't intend to. Therefore we are unable to provide the android body that Andrew Martin has requested. And I suggest to you that this conversation has reached a point of no return. If you'll excuse me, therefore-" And he half rose from his seat.
"Just a little time longer, if you please," said Paul in an easy tone that had something more forceful just beneath its surface. He cleared his throat. Smythe-Robertson subsided, looking even more displeased than he had. Paul went on, "Mr. Smythe-Robertson, Andrew is a free robot who falls under the protection of the laws that govern robot rights. You are aware of this, of course."