"Oh," Malone said. "Sure. But you can find the circuits, if they're there?"
Leibowitz nodded slowly. "We can, Mr. Malone," he said. "They betray themselves. A microcircuit need not be more than a few microns thick, you see—as far as the conductors and insulators are concerned, at any rate. But the regulators-transistors and such—have to be as big as a pinhead."
"Enormous, huh?" Malone said.
"Well," Leibowitz said, and chuckled, "quite large enough to locate without trouble, at any rate. They're very hard to conceal. And the leads from the brain to the power controls are even easier to find—comparatively speaking, of course."
"Of course," Malone said.
"All the brain does, you see," Leibowitz said, "is control the mechanism that steers the car. But it takes real power to steer—a great deal more than it does to compute the steering."
"I see," Malone, who didn't, said desperately. "In other words, unless something radically new has been developed, you can find the circuits."
"Right," Leibowitz said, grinning. "It would have to be something very new indeed, Mr. Malone. We're up on most of the latest developments here; we've got to be. But I don't want you giving me the credit for this."
"No?" Malone said.
"Oh, no," Leibowitz said. "All I do is work out the general application to theory, as far as actual detection is concerned. It's my partner, Mr. Hardin, who takes care of all the engineering details."