Martine stirred and sat up. "I am troubled," she said. "Troubled by many things."
"And who is not?" Florimel snorted.
"This thing about Kunohara having an informant among us?" Paul asked her.
"No. There is nothing we can do about that if it is true, and I am willing to believe you all when you say you know nothing about it." But her sightless gaze seemed to pause for a moment on T4b, who shifted uncomfortably. "I am troubled by the song that the . . . the operating system, as I suppose I must call it, was singing. A song that I think I taught it to sing."
"You can call it the Other," said Florimel. "Many others seem to, and it is easier to say."
Martine waved her hand in impatience. "It does not matter. The fact is, I am troubled because it might hold answers to some of our questions, but I can remember very little about that time, those events."
Paul shrugged. "We don't know anything except what you've told us."
"And that is as much as I wish to tell. I was . . . experimented upon. I communicated remotely with what I thought was another child—a strange, even frightening child, but also somehow pitiful. I played games with it, as I assume other children in the institute did. I taught it stories, songs. I think that I taught it the song it was singing. . . ." She broke off, staring at nothing.
"And now you think this playmate of yours was an AI?" Paul finished for her. "They were . . . training the operating system to be like a human, for some reason."
T4b shook his head. "Locktacious. Those old Grail-knockers scan freely, huh?"
"Stories," Martine said quietly. "Yes, there was a story that went with the song. What was it? God, it was so long ago!"
"I do not remember the song," Florimel said. "Much that happened on that mountaintop—it was all very confusing. Frightening."
Martine raised her hands as though trying to keep her balance. The others fell silent. When she spoke Paul expected some revelation, but instead the blind woman said, "We are almost there."
"What? Where?"
"The end of this simulation. I can feel the . . . the falling-off. The ending." She swiveled her head. "I must have quiet. I wish we could land and go through slowly, but we have no way to control our movement, so I must take this as it comes. If I can get us to Troy, I will. If not, there is no telling where we may find ourselves."
They were all still for a moment, the bubble rising and falling with the movement of the river.
"Will we have a boat on the other side?" Florimel asked hoarsely.
Martine shook her head in irritation, hardly listening, intent on something none of the others could perceive.
"What do you mean?" Paul asked.
"This was not a standard craft," Florimel said. "We walked out of this simulation the first time we were here. Renie and !Xabbu used one of the entomological institute's planes, which was translated into something else on the far side of the gateway. But what is this?" She spread her arms. "It is a bubble, something that did not exist until Kunohara made it. Will it be something on the far side? Or will it just . . . disappear?"
"Jesus." Paul reached out and clutched Martine's hand. "Everybody grab on. At least that way we'll go into the water together." The blind woman did not seem to notice. Florimel took her other hand, then they both linked with T4b, who had gone pale and as silent as Martine. The water seemed to be moving faster now, the bubble jouncing through streaks of white foam. "I think we're heading toward another waterfall." Paul tried hard to keep his voice steady.
"Going all blue, like," T4b growled, trying as hard as Paul. "Sparkly."
"Hold tightly." Florimel closed her eyes. "If we do go in the water, lake a big breath. Do not struggle, do not swim until you know what is up or down."
"If we can tell," Paul said, but it was nearly a whisper. Beside him Martine had gone rigid, locked onto some incomprehensible signal.
The current was definitely moving faster now. The bubble bounced from one swift-moving eddy to another, barely dimpling the surface of the water. A lurch turned them all sideways, and for a moment Florimel and T4b rose up above Paul's head before tumbling down on top of him in a bruising pile of elbows and knees. Somehow they managed to keep their hands locked; a moment later the bubble had righted itself, leaving them sprawled on their backs once more, panting and silent.
Blue fire began to rise around them in glittering cascades. The bubble rose, fell, skimmed, and spun.
Where next? Paul thought wildly as they were flung head over heels again. Good God, where next?
A fog of blue sparks surrounded them completely. Martine grunted in pain and fell sideways into Paul's lap just as the bubble evaporated around them and black water splashed in on all sides.
"We're still alive," Paul said. He spoke the words aloud in part because he was still not entirely certain it was true. Their bubble was gone and already he missed it dearly. It had been replaced by a small boat, a crude craft that seemed like something to be poled rather than rowed, although there were no implements on board to do either. The storm that had greeted them at the gateway had swept past, but it had left them drenched and the air was frosty. Paul could already feel his wet clothes crackling with ice.
The river around them was black. The land, such of it as they could see through the mists, was all white. They were surrounded by snow.
"How is Martine?" asked Florimel.
Paul pulled her upright against him. "Shivering, but I think she's okay. Martine, can you hear me?"
T4b squinted out across the apparently polar landscape. "Don't look like that Troy place to me."
Martine groaned quietly and shook her head. "It is not. I could not find the Trojan simulation in the information at the gateway." She wrapped her arms tight around her body, still shivering. "I had to work so fast! Many of the gateways are closed—the information system for the gateway was like a building with most of its lights out."
"So where are we?" Florimel asked. "And if we can't get to Troy, what are we going to do?"
"Freeze, if we don't make a fire," Paul said through clenched teeth; he was shivering now. "Time later to worry about other things if we manage to survive. We'll have to go ashore." He wished that he felt as confident, as certain as he was trying to sound. This simworld along the river-banks reminded him of nothing so much as the Ice Age, although he hoped it wasn't so; it was impossible to forget the giant hyenas that had chased him into an icy river much like this one. He did not want to encounter any more primitive megafauna.
"There is nowhere here to make a fire, and nothing to make one with." Florimel pointed at the hummocks of snow which seemed to extend from the riverbanks all the way to the dim, fogbound mountains. "Do you see any trees? Any wood?"
"Those hills up ahead," Paul said. "Where the river turns—who knows what's behind them, or even under them? Maybe this is some kind of futuristic simworld, and there are underground houses with atomic furnaces or something. We can't just give up. We'll freeze."
"Not necessarily," Florimel said sharply. "None of us is like Renie and !Xabbu, with their real bodies suspended in liquid. Our bodies are all resting at room temperature somewhere. How can we freeze? Our nerves can be fooled into feeling cold, but that is not the same as actually being cold." Despite her words, she too was now wracked with trembling. "Psychosomatically we can be convinced perhaps to radiate more heat, as though we had fever, but surely we cannot be forced to freeze ourselves?"
"By that logic," Martine pointed out through chattering teeth, "we could not be bitten in half by a giant scorpion, either—it would only be a tactile illusion. But none of us were very eager to test that assumption, were we?"