"Dr. Morris, two-four-seven-one."

"Thank you." That was the extension for the seventh floor nurses' station. It was odd how he had learned all these extensions. The telephone network of University Hospital was more complicated than human anatomy. But over the years, without any conscious attempt to learn it, he came to know it quite well. He dialed the floor. "Dr. Morris."

"Oh, yes," a female voice said. "We have a woman with an overnight bag for patient Harold Benson. She says it's personal things. Is it all right to give it to him?"

"I'll come up," he said.

"Thank you, Doctor."

He went back to his tray, picked it up, and carried it to the disposal area. As he did so, his beeper went off again. He went to answer it.

"Dr. Morris."

"Dr. Morris, one-three-five-seven."

That was the metabolic unit. He dialed. "Dr. Morris."

"This is Dr. Hanley," an unfamiliar voice said. "We wondered if you could take a look at a lady we think may have steroid psychosis. She's a hemolytic anemic up for splenectomy."

"I can't see her today," Morris said, "and tomorrow is tight." That, he thought, was the understatement of the year.

"Have you tried Peters?"

"No…"

"Peters has a lot of experience with steroid mentation. Try him."

"All right. Thanks."

Morris hung up. He got onto the elevator and pressed the button for the seventh floor. His beeper went off a third time. He checked his watch; it was 6:30 and he was supposedly off-duty by now. But he answered it anyway. It was Kelso, the pediatric resident.

"Want your ass whipped?" Kelso said.

"Okay. What time?"

"Say, about half an hour?"

"If you've got the balls."

"I've got them. They're in my car."

"See you on the court," Morris said. Then he added, "I may be a little late."

"Don't be too late," Kelso said. "It'll be dark soon."

Morris said he would hurry, and hung up.

The seventh floor was quiet. Most of the other hospital floors were noisy, jammed with relatives and visitors at this hour, but the seventh floor was always quiet. It had a sedate, calm quality that the nurses were careful to preserve.

The nurse at the station said, "There she is, Doctor," and nodded to a girl sitting on a couch. Morris went over to her. She was young and very pretty in a flashy, show-business sort of way. She had long legs.

"I'm Dr. Morris."

"Angela Black." She stood up and shook hands, very formally. "I brought this for Harry." She lifted a small blue overnight bag. "He asked me to bring it."

"All right." He took the bag from her. "I'll see that he gets it."

She hesitated, then said, "Can I see him?"

"I don't think it's a good idea." Benson would have been shaved by now; pre-op patients who had been shaved often didn't want to see people.

"Just for a few minutes?"

"He's heavily sedated," he said.

She was clearly disappointed. "Then would you give him a message?"

"Sure."

"Tell him I'm back in my old apartment. He'll understand."

"All right."

"You won't forget?"

"No. I'll tell him."

"Thank you." She smiled. It was a rather nice smile, despite the long false eyelashes and the heavy make-up. Why did young girls do that to their faces? "I guess I'll be going now." And she walked off, short skirt and very long legs, a briskly determined walk. He watched her go, then hefted the bag, which seemed heavy.

The cop sitting outside the door to 710 said, "How's it going?"

"Fine," Morris said.

The cop glanced at the overnight bag but said nothing as

Morris took it inside the room.

Harry Benson was watching a Western on television. Morris turned down the sound. "A very pretty girl brought you this."

"Angela?" Benson smiled. "Yes, she has a nice exterior. Not a very complicated internal mechanism, but a nice exterior." He extended his hand; Morris gave him the bag.

"Did she bring everything?"

Morris watched as Benson opened it, placing the contents on the bed. There were a pair of pajamas, an electric razor, some after-shave lotion, a paperback novel.

Then Benson brought out a black wig.

"What's that?" Morris asked.

Benson shrugged. "I knew I'd need it sooner or later," he said. Then he laughed. "You are letting me out of here, aren't you? Sooner or later?"

Morris laughed with him. Benson dropped the wig back into the bag, and removed a plastic packet. With a metallic clink, he unfolded it, and Morris saw it was a set of screwdrivers of various sizes, stored in a plastic package with pockets for each size.

"What's that for?" Morris asked.

Benson looked puzzled for a moment. Then he said, "I don't know if you'll understand…"

"Yes?"

"I always have them with me. For protection."

Benson placed the screwdrivers back into the overnighter. He handled them carefully, almost reverently. Morris knew that patients frequently brought odd things into the hospital, particularly if they were seriously ill. There was a kind of totemic feeling about these objects, as if they might have magical preservative powers. They were often connected with some hobby or favorite activity. He remembered a yachtsman with a metastatic brain tumor who had brought a kit to repair sails, and a woman with advanced heart disease who had brought a can of tennis balls. That kind of thing.

"I understand," Morris said.

Benson smiled.

Telecomp was empty when she came into the room; the consoles and teleprinters stood silently, the screens blinking up random sequences of numbers. She went to the corner and poured herself a cup of coffee, then fed the test card from Benson's latest psychodex into the computer.

The NPS had developed the psychodex test, along with several other computer-analyzed psychological tests. It was all part of what McPherson called "double-edged thinking." In this case, he meant that the idea of a brain being like a computer worked two ways, in two different directions. On the one hand, you could utilize the computer to probe the brain, to help you analyze its workings. At the same time, you could use your increased knowledge of the brain to help design better and more efficient computers. As McPherson said, "The brain is as much a model for the computer as the computer is a model for the brain."

At the NPS, computer scientists and neurobiologists had worked together for several years. From that association had come Form Q, and programs like George and Martha, and new psycho-surgical techniques, and psychodex.

Psychodex was relatively simple. It was a test that took straightforward answers to psychological questions and manipulated the answers according to complex mathematical formulations. As the data were fed into the computer, Ross watched the screen glow with row after row of calculations.

She ignored them; the numbers, she knew, were just the computer's scratch pad, the intermediate steps that it went through before arriving at a final answer. She smiled, thinking of how Gerhard would explain it - rotation of thirty by thirty matrices in space, deriving factors, making them orthogonal, then weighting them. It all sounded complicated and scientific, and she didn't really understand any of it.

She had discovered long ago that you could use a computer without understanding how it worked. Just as you could use an automobile, a vacuum cleaner - or your own brain.

The screen flashed "CALCULATIONS ENDED. CALL DISPLAY SEQUENCE."

She punched in the display sequence for three-space scoring. The computer informed her that three spaces accounted for eighty-one percent of variance. On the screen she saw a three-dimensional image of a mountain with a sharp peak. She stared at it a moment, then picked up the telephone and paged McPherson.

McPherson frowned at the screen. Ellis looked over his shoulder. Ross said, "Is it clear?"

"Perfectly," McPherson said. "When was it done?"

"Today," she said.

McPherson sighed. "You're not going to quit without a battle, are you?"

Instead of answering, she punched buttons and called up a second mountain peak, much lower. "Here's the last one previously."

"On this scoring, the elevation is- "

"Psychotic mentation," she said.

"So he's much more pronounced now," McPherson said. "Much more than even a month ago."

"Yes," she said.

"You think he was screwing around with the test?"

She shook her head. She punched in the four previous tests, in succession. The trend was clear: on each test the mountain peak got higher and sharper.

"Well, then," McPherson said, "he's definitely getting worse. I gather you still think we shouldn't operate."

"More than ever," she said. "He's unquestionably psychotic, and if you start putting wires in his head- "

"I know," McPherson said. "I know what you're saying."

"- he's going to feel that he's been turned into a machine," she said.

McPherson turned to Ellis. "Do you suppose we can knock this elevation down with thorazine?" Thorazine was a major tranquilizer. With some psychotics, it helped them to think more clearly.

"I think it's worth a try."

McPherson nodded. "I do, too. Janet?"

She stared at the screen and didn't reply. It was odd how these tests worked. The mountain peaks were an abstraction, a mathematical representation of an emotional state. They weren't a real characteristic of a person, like fingers or toes, or height or weight.

"Janet? What do you think?" McPherson repeated.

"I think," she said, "that you're both committed to this operation."

"And you still disapprove?"

"I don't 'disapprove.' I think it's unwise for Benson."

"What do you think about using thorazine?" McPherson persisted.

"It's a gamble."

"A gamble not worth taking."