"Come on, Doc, come ona come on." Rabbit danced a little jig. Its voice had a mocking lilt that Alfred had first heard some eighty years earlier. "Is there some kinda problem?"

"No problem," said Vaz. "Are your agents in place?"

"Never fear. All but Rivera and Gu are at the start point. I'm guiding them around the riot even as we speak. But if you want to snoop the fiber, you better hurry up."

The ground was firm and level. There was a surfaced path. Now their speed was limited by how fast his mechs could make their stealthy way.

There were crowds here, but almost everyone was walking toward the library. He caught a glimpse of Rivera and Gu. And, once, he saw two children on bicycles. Where did that fit with Hacekeans and Scoochis? He would have put the question to his analyst pool — if only he had his milnet link.

The Mysterious Stranger hustled Robert off the surface path, down past where administration bungalows used to be. Robert kept a virtual light on the rough ground. The view was up-to-the-second and clearer than a flashlight might have given him, but keeping up with the Stranger didn't leave time to ghost around the library. "Those are real lights back there," he said. "Even more than before. What — ?"

"The Hacek people got a little too enthusiastic. They've destroyed some camera infrastructure. They need real light." He was chuckling. "Don't worry. No one will be hurt, and it's a diversion that will be… useful."

The Stranger slowed. Robert looked away from the ground for a moment. Over the hill, he got a look — from a point high in the trees — at the people on the ground. In true view, they were students shouting at each other, a few involved in real scuffles. But shift a little away from strict reality, and the imagery became what one group or another wanted you to see. There were Hacek Knights and Librarians tussling with fluffy, colorful critters that might have been big-eyed mammals or — "Ah! So it's the Scooch-a-mout fans going after the Hacekeans?"

"Mostly." The Stranger seemed to be listening for something. Somebody was coming down the hill on an intercept course. A Librarian Militant. Carlos Rivera. The chubby librarian nodded at Stranger-Sharif and Robert. "What a mess."

"But a useful mess," said the Stranger.

"Yeah." Carlos dropped his costume: the Librarian's hat reverted to an everyday baseball cap worn backwards, and now his plate armor was just Bermuda shorts and the Rivera standard T-shirt. "I just hope this fighting doesn't become a tradition."

The Mysterious Stranger waved them on through the brush. "A tradition?" he said. "But that would be a plus. Like panty raids and putting automobiles on top of administration buildings. The sort of thing that made American universities great."

Rivera puffed along. "Maybe. We've had a lot more business since the library went virtual, but — "

Robert was still watching the mobs beyond the hill. "I thought the whole point of belief circles was that they can coexist in the same space."

"In principle," said Rivera. They took a big detour around a space that was dark even in the virtual. Sharif's image seemed to flicker and jerk. So few people walked through this area that the random network was sparse and your wearable had to make way too many guesses.

"But," Rivera continued, "the library is a tight fit. In principle we can morph to support the multiple beliefs, like on Pyramid Hill. In fact, our environment is often too close for conflicting haptics. So the administration tried to satisfy the Scoochis by giving them some space underground." Rivera paused, and Robert almost ran him over. "You knew that wouldn't work, didn't you?" Carlos was looking at Stranger-Sharif, or what Robert saw as Stranger-Sharif.

The Stranger turned and smiled. "I gave you the best advice I had, dear boy."

"Yeah." Rivera sounded close to surly. He looked over his shoulder at Robert. "What does he have on you, Professor?"

"I — — "

"Ah, ah, ah!" interrupted the Stranger. "I think we'd all be more comfortable without such revelations."

"Okay," said both victims.

"In any case," said the Stranger, "I'm rather proud of how I've morphed the Librareome controversy into this conflict between belief circles. This riot will distract people who would otherwise be paying attention to other things — such as what we're doing."

They were well south of the library now, out of the trees and coming down a steep slope. Just ahead was Gilman Drive. Carlos walked heedlessly into the street. The cars slowed or speeded up or changed lanes so there was always a wide bubble of empty space around him. Robert hesitated, looking for a crosswalk. Damn . Finally he scooted after Carlos, out into traffic.

Miri stopped ON the north side of Gilman Drive.

"So where are they going?" said Juan.

"They're coming down to Gilman Drive." Viewpoints in the eucalyptus showed Robert and the librarian, Carlos Rivera, walking through deep brush. The pictures were fragmentary, since there weren't many cameras there, but Miri was sure no one was pulling a swap on her. The two would reach the roadway in a couple of minutes.

"But that's true of anyone coming south."

Miri stopped her bike, put a foot on the ground. "Look! You want me to say I don't know where they're going, is that it?"

The Orozco kid stopped his wikiBay bike beside her. "Honest, I'm just wondering."

Xiu Xiang popped into existence, and a moment later, so did a young version of Lena Gu. Their images were Barbie-doll stiff, but every day they got better. For instance, Lena had mastered facial expressions — and right now her look was stern. "Juan isn't the only one with this question, young lady. If you don't know , you should say so."

Xiu just sounded anxious. "Lena and I are driving around the north side of campus. Maybe my research was all wrong. How can we help if the action is on the south?"

Miri struggled to make her own voice serene. "I think you got it right, Dr. Xiang. Juan and I have been following Robert closely, but now… I guess I don't know where he's going. That makes it even more important that we stay spread out. Please Dr. Xiang, if you and Lena can stay on the north side, that would be best." Over the last few days, Xiu had done some good detective work; she could be really smart when she wasn't doubting herself. They knew that Huertas kept the Librareome shredda in his labs on the north side. If Robert's friends planned a "direct protest," that would be the sensible place for them to break in. So why aren't Robert and the others heading that way ? Big boogers of uncertainty were beginning to form.

But Dr. Xiang nodded, and not even Juan Orozco asked the obvious embarrassing questions. This was still the Miri Gang. For better or worse.

The treetop cams had lost sight of Robert and Mr. Rivera. Miri dropped those viewpoints and glanced up the hillside, almost with a naked-eye perspective. The other two were still out of sight. They could come out on Gilman Drive almost anywhere.

Miri licked her lips. "The main thing is to keep these — "

" — crazy fools — " said Lena.

" — from doing anything too destructive."

"Yeah," said Juan, nodding. "Who do you think that remote guy is, the one who's walking with them?"

"What?" Juan was a mostly clueless kid, but sometimes he was accidentally very sharp. Miri played back her last images of Robert and Mr. Rivera. Those pics were fragmentary, but Juan was right. The two were looking at a consistent location that drifted along with them — and granting it a certain amount of open space. So. A private presence.

Juan said, "I'll bet they're seeing Zulfi Sharif."

"I'll bet you're right." Not for the first time tonight, she tried to bring up her Sharif control. Still no response.