The input navigator drifted of its own accord back into the same location as the output navigator, and the fourth citizen abruptly vanished. The infotrope pushed the navigators apart again; the fourth citizen reappeared.

The "Inoshiro" citizen said, "What's it doing?"

The "Blanca" citizen replied, "Just watch, and be patient. You might learn something."

A new symbol was already forming, a representation of the strange fourth citizen—the only one whose icon seemed bound by a mutual attraction to the orphan's viewpoint in the scape, and the only one whose action the orphan could anticipate and control with such ease. So were all four citizens the same kind of thing-like all lions, all antelope, all circles… or not? The connections between the symbols remained tentative.

The "Inoshiro" citizen said, "I'm bored! Let some one else baby-sit it!" Ve danced around the group-taking turns imitating the "Blanca" and "Gabriel" icons, and reverting to vis original form. "What's my name? I don't know! What's my signature? I don't have one! I'm an orphan! I'm an orphan! I don't even know how I look!"

When the orphan perceived the "Inoshiro" citizen taking on the icons of the other two, it almost abandoned its whole classification scheme in confusion. The "Inoshiro" citizen was behaving more like the fourth citizen, now—though vis actions still didn't coincide with the orphan's intentions.

The orphan's symbol for the fourth citizen kept track of that citizen's appearance and location in the scape, but it was also beginning to distill the essence of the orphan's own mental images and short-term "goal" creating a summary of all the aspects of the orphan' state of mind which seemed to have some connection to the fourth citizen's behavior. Few symbols possessed sharply defined boundaries, though; most were as permeable and promiscuous as plasmid-swapping bacteria. The symbol for the "Inoshiro" citizen copied some of the state-of-mind structures from the symbol for the fourth citizen, and began trying them out for itself.

At first, the ability to represent highly summarized "mental images" and "goals" was no help at all—because it was still linked to the orphan's state of mind. The "Inoshiro" symbol's blindly cloned machinery kept predicting that the "Inoshiro" citizen would behave according to the orphan's own plans… and that never happened. In the face of this repeated failure, the links soon withered—and the tiny, crude model-of-a-mind left inside the "Inoshiro" symbol was set free to find the "Inoshiro" state-of-mind that best matched the citizen's actual behavior.

The symbol tried out different connections, different theories, hunting for the one that made most sense… and the orphan suddenly grasped the fact that the "Inoshiro" citizen had been imitating the fourth citizen.

The infotrope seized on this revelation—and tried to make the fourth citizen mimic the "Inoshiro" citizen back.

The fourth citizen proclaimed, "I'm an orphan! I'm an orphan! I don't even know how I look!"

The "Gabriel" citizen pointed at the fourth citizen and said, "Ve is an orphan!"

The "Inoshiro" citizen agreed wearily, "Ve is an orphan. But why does ve have to be this slow!"

Inspired—driven by the infotrope—the orphan tried playing the "Ve is-?" game again, this rime using the response "an orphan" for the fourth citizen. The other, confirmed the choice, and soon the words were bound to the symbol for the fourth citizen. When the orphan's three friends left the scape, the fourth citizen remained. But the fourth citizen had exhausted vis ability to offer interesting surprises, so after pestering some of the other citizens to no avail, the orphan returned to the library.

The input navigator had learned the simplest indexing scheme used by the library, and when the infotrope hunted for ways to tie up the loose ends in the patterns half-formed in the scape, it succeeded in driving the input navigator to locations in the library which referred to the four citizens' mysterious linear words: Inoshiro, Gabriel, Blanca, and Orphan. There were streams of data indexed by each of these words, though none seemed to connect to the citizens themselves. The orphan saw so many images of fleshers, often with wings, associated with the word "Gabriel" that it built a whole symbol out of the regularities it found, but the new symbol barely overlapped with that of the golden-furred citizen.

The orphan drifted away from its infotrope-driven search many times; old addresses in the library, etched in memory, tugged at the input navigator. Once, viewing a scene of a grimy flesher child holding up an empty wooden bowl, the orphan grew bored and veered back toward more familiar territory. Halfway there, it came across a scene of an adult flesher crouching beside,, bewildered lion cub and lifting it into vis arms.

A lioness lay on the ground behind them, motionless and bloody. The flesher stroked the head of the cub. "Poor little Yatima."

Something in the scene transfixed the orphan. It whispered to the library, "Yatima. Yatima." It had never heard the word before, but the sound of it resonated deeply.

The lion cub mewed. The flesher crooned, "My poor little orphan." The orphan moved between the library and the scape with the orange sky and the flying-pig fountain. Sometimes its three friends were there, or other citizens would play with it for a while; sometimes there was only the fourth citizen.

The fourth citizen rarely appeared the same from visit to visit—ve tended to resemble the most striking image the orphan had seen in the library in the preceding few kilotau—but ve was still easy to identify: ve was the one who only became visible when the two navigators moved apart. Every time the orphan arrived in the scape, it stepped back from itself and checked out the fourth citizen. Sometimes it adjusted the icon, bringing it closer to a specific memory, or fine-tuning it according to the aesthetic preferences of the input classifying networks—biases first carved out by a few dozen trait fields, then deepened or silted-up by the subsequent data stream. Sometimes the orphan mimicked the flesher it had seen picking up the lion cub: tall and slender, with deep black skin and brown eyes, dressed in a purple robe.

And once, when the citizen bound to "Inoshiro" said with mock sorrow, "Poor little orphan, you still don't have a name," the orphan remembered the scene, and responded, "Poor little Yatima."

The golden-furred citizen said, "I think it does, now.

From then on, they all called the fourth citizen "Yatima." They said it so many times, making such a fuss about it, that the orphan soon bound it to the symbol as strongly as "Orphan."

The orphan watched the citizen bound to "Inoshiro" chanting triumphantly at the fourth citizen: "Yatima? Yatima! Ha ha ha! I've got five parents, and five part, siblings, and I'll always be older than you!"

The orphan made the fourth citizen respond, "Inoshiro! Inoshiro! Ha ha ha!"

But it couldn't think what to say next. Blanca said, "The gleisners are trimming an asteroid—right now, in real time. Do you want to come see? Inoshiro's there, Gabriel's there. just follow me!"

Blanca's icon put out a strange new tag, and then abruptly vanished. The forum was almost empty; there were a few regulars near the fountain, who the orphan knew would be unresponsive, and there was the fourth citizen, as always.

Blanca reappeared. "What is it? You don't know how to follow me, or you don't want to come?" The orphan's language analysis networks had begun fine-tuning the universal grammar they encoded, rapidly homing in on the conventions of linear. Words were becoming more than isolated triggers for symbols, each with a single, fixed meaning; the subtleties of order, context, and inflection were beginning to modulate the symbols' cascades of interpretation. This was a request to know what the fourth citizen wanted.