The thin man looked shocked, angry. Hari asked Dors, “What was the root mean deviation?”

“Always the skeptic! Not sufficient to prove that prayer had an actually harmful effect.”

“Ah.” The crowd seemed to find this example of tag-team puffery entertaining. Best to leave them wanting more. “Thank you,” he said, and they melted away behind a screen of Specials.

That left the crowd itself. Cleon had urged him to mingle with these folk, supposedly his basic power base, the meritocrats. Hari wrinkled his nose and nonetheless plunged in.

It was a matter of style, he realized after the first thirty minutes.

He had learned early in rural Helicon to place great store in good manners and civility. Among the alert, hard-edged academics he had found many who seemed poorly socialized, until he realized that they were operating out of a different culture, where cleverness mattered more than grace. Their subtle shadings of voice carried arrogance and assurance in precarious balance, which in unguarded moments tilted into acerbic, cutting judgment, often without even the appealing veneer of wit. He had to make himself remember to say “With all due respect,” at the beginning of an argument, and even to mean it.

Then there were the unspoken elements.

Among the fast-track circles, body language was essential, a taught skill. There were carefully designed poses for Confidence, Impatience, Submission (four shadings), Threat, Esteem, Coyness and dozens more. Codified and understood unconsciously, each induced a specific desired neurological state in both self and others. The rudiments for a full-blown craft lay in dance, politics, and the martial arts. By being systematic, much more could be conveyed. As with language, a dictionary helped.

A nonlinear philosopher of Galaxy-wide fame gave Hari a beaming smile, body language screaming self-confidence, and said, “Surely, Professor, you cannot maintain that your attempt to import math into history can somehow work? People can be what they wish. No equations will make them otherwise.”

“I seek to describe, that’s all.”

“No grand theory of history, then?”

Avoid a direct denial, he thought. “I will know I’m on the right track when I can simply describe a bit of human nature.”

“Ah, but that scarcely exists,” the man said with assurance, arms and chest turned adroitly.

“Of course there’s a human nature!” Hari shot back.

A pitying smile, a lazy shrug. “Why should there be?”

“Heredity interacts with environment to tug us back toward a fixed mean. It gathers people in all societies, across millions of worlds, into the narrow statistical circle that we must call human nature.”

“I don’t think there are enough general traits-”

“Parent-child bonding. Division of labor between the sexes.”

“Well, surely that’s common among all animals. I-”

“Incest avoidance. Altruism-we call it ‘humanitarianism,’ a telling clue, eh?-toward our near kin.”

“Well, those are just normal family-”

“Look at the dark side. Suspicion of strangers. Tribalism-witness Trantor’s eight hundred Sectors! Hierarchies in even the smallest groups, from the Emperor’s court to a bowling team.”

“Surely you can’t make such leaps, such simplistic, grotesque comparisons-”

“I can and do. Male dominance, generally, and when resources are scarce, marked territorial aggression.”

“These are little traits.”

“They link us. The sophisticated Trantorian and an Arcadian farmer can still understand each other’s lives, for the simple reason that their common humanity lives in the genes they share from many tens of millennia ago.”

This outburst was not received well. Faces wrinkled, mouths pouched in disapproval.

Hari saw he had overstepped. What’s more, he had nearly exposed psychohistory.

Yet he found it hard to not speak frankly. In his view the humanities and social sciences shrank to specialized branches of both mathematics and biology. History, biography, and fiction were symptoms. Anthropology and sociology together became the sociobiology of a single species. But he could not get a feel for how to include that in the equations. He had spoken out, he saw suddenly, because he was frustrated-by his own lack of understanding.

Still, that did not excuse his stupidity. He opened his mouth to smooth over the waters.

He saw the agitated man coming up on his left. Mouth awry, eyes white, hand-extended, poking forward, a tube in it, chromed and sleek and with a precise hole at the tip, a dark spot that expanded as he looked at it until it seemed like the Eater of All Things that lurked at Galactic Center, immense

Dors hit the man quite expertly. She deflected the arm up, jabbed him in the throat, struck next at the belly. Then she twisted the arm and forced him into a quarter-turn, her left leg coming around and cutting his feet from beneath him, her right hand forcing the head down-

And they struck the floor solidly, Dors on top, the gun skittering away among the shoes of the crowd-which was falling back in panic.

Specials blocked in around him and he saw no more. He shouted to Dors. Screams and shouts hammered at him from all sides.

More bedlam. Then he was clear of the Specials and the man was getting up and Dors was standing, holding the pistol, shaking her head. The man who had pointed it struggled to his feet.

“A recording tube,” she said in disgust.

“What?” Hari could barely hear in the noise.

The man’s left arm was sticking out at a wrong angle, plainly broken. “I-I agreed with your every word,” the man croaked out, his face a ghastly white. “Really.”

Hari’s father had derisively referred to most public affairs as “dust-ups” -a big cloud on the horizon, a tiny speck underneath. His lip had curled back in a farmer’s disdain for making more of a thing than it was.

The incident at the Grand Imperial Universities Colloquy had become a grand dustup. Fully 3D’d, the scandal-PROF’S WIFE SOCKS FAN-burgeoned with each replaying.

Cleon called, tsk-tsking, and commenting broadly on how wives could be a burden in high office. “This will hurt your candidacy, I fear,” he had said. “I must do some mending.”

Hari did not report this to Dors. Cleon’s hint was clear. It was common practice among Imperial circles to divorce on grounds of general unsuitability-which meant unfashionability. In matters of vast power, appetite for more often overwhelmed all other emotions, even love.

He went home, irked by this conversation, to find Dors at work in the kitchen. She had her arms open-literally, not in greeting.

The epidermis hung loose, as if she had pulled a tight glove halfway off. Veins interlaced with the artificial neural net and she was working with tiny tools among them. Supple skin peeled back in a curved line down from elbow to wrist, moist crimson and intricate electronics. She was working on the augmented wrist, a thin yellow collar that did not look as though it could take three times the normal human’s impact.

“That fellow damaged you?”

“No, I did it to myself-or rather, overdid it.”

“A sprain?”

She smiled without humor. “My pivots don’t sprain. The collar mounts don’t mend. I’m replacing them.”

“Jobs like this, it’s not the parts, it’s the labor.”

She looked at him quizzically and he decided not to pursue the joke. He normally put from his mind the fact that his true love was a robot-or more accurately, a humaniform, vastly technically assisted, human-robot synthesis.

She had come to him through R. Daneel Olivaw, the ancient positronic robot who had saved Hari when he first came to Trantor and ran afoul of nasty political forces. She had been assigned at first as a bodyguard. He had known what she was from the start, at least approximately, but that did not prevent him from falling in love with her. Intelligence, character, charm, a simmering sexuality-these were not purely human facets, he had learned-by direct example.