The Caves of Steel - By Isaac Asimov Page 0,36

incident - and Spacer ships come down and occupy the Cities of Earth."

Fastolfe said, mildly, "We had an excuse in the Barrier Riots of twenty-five years ago."

"You weren't ready then. You are now." Baley's heart was pounding madly.

"This is quite a complicated plot you're attributing to us, Mr. Baley. If we wanted to occupy Earth, we could do so in much simpler fashion.

"Maybe not, Dr. Fastolfe. Your so-called robot told me that public opinion concerning Earth is by no means unified on your Outer Worlds. I think he was telling the truth at that time, anyway. Maybe an outright occupation wouldn't sit well with the people at home. Maybe an incident is an absolute necessity. A good shocking incident."

"Like a murder, eh? Is that it? You'll admit it would have to be a pretended murder. You won't suggest, I hope, that we'd really kill one of ourselves for the sake of an incident."

"You built a robot to look like Dr. Sarton, blasted the robot, and showed the remains to Commissioner Enderby."

"And then," said Dr. Fastolfe, "having used R. Daneel to impersonate Dr. Sarton in the false murder, we have to use Dr. Sarton to impersonate R. Daneel in the false investigation of the false murder."

"Exactly. I am telling you this in the presence of a witness who is not here in the flesh and whom you cannot blast out of existence and who is important enough to be believed by the City government and by Washington itself. We will be prepared for you and we know what your intentions are. If necessary, our government will report directly to your people, expose the situation for exactly what it is. I doubt if this sort of interstellar rape will be tolerated."

Fastolfe shook his head. "Please, Mr. Baley, you are being unreasonable. Really, you have the most astonishing notions. Suppose now, just quietly suppose, that R. Daneel is really R. Daneel. Suppose he is actually a robot. Wouldn't it follow that the corpse Commissioner Enderby saw was really Dr. Sarton? It would be scarcely reasonable to believe that the corpse were still another robot. Commissioner Enderby witnessed R. Daneel under construction and can vouch for the fact that only one existed."

"If it comes to that," said Baley, stubbornly, "the Commissioner is not a robotics expert. You might have had a dozen such robots."

"Stick to the point, Mr. Baley. What if R. Daneel is really R. Daneel? Would not the entire structure of your reasoning fall to the ground? Would you have any further basis for your belief in this completely melodramatic and implausible interstellar plot you have constructed?"

"If he is a robot! I say he is human."

"Yet you haven't really investigated the problem, Mr. Baley," said Fastolfe. "To differentiate a robot, even a very humanoid robot, from a human being, it isn't necessary to make elaborately shaky deductions from little things he says and does. For instance, have you tried sticking a pin into R. Daneel?"

"What?" Baley's mouth fell open.

"It's a simple experiment. There are others perhaps not quite so simple. His skin and hair look real, but have you tried looking at them under adequate magnification. Then again, he seems to breathe, particularly when he is using air to talk, but have you noticed that his breathing is irregular, that minutes may go by during which he has no breath at all. You might even have trapped some of his expired air and measured the carbon dioxide content. You might have tried to draw a sample of blood. You might have tried to detect a pulse in his wrist, or a heartbeat under his shirt. Do you see what I mean, Mr. Baley?"

"That's just talk," said Baley, uneasily. "I'm not going to be bluffed. I might have tried any of those things, but do you suppose this alleged robot would have let me bring a hypodermic to him, or a stethoscope or a microscope?"

"Of course. I see your point," said Fastolfe. He looked at R. Daneel and gestured slightly.

R. Daneel touched the cuff of his right shirt sleeve and the diamagnetic seam fell apart the entire length of his arm. A smooth, sinewy, and apparently entirely human limb lay exposed. Its short, bronze hairs, both in quantity and distribution, were exactly what one would expect of a human being.

Baley said, "So?"

R. Daneel pinched the ball of his right middle finger with the thumb and forefinger of his left hand. Exactly what the details of the manipulation that followed were, Baley could not