The meeting with Adisa and the others was on Tuesday.
Dr. Woo had arranged it in the research annex, which had been rearranged for the occasion — the two tables pushed apart rather than together, four chairs in a loose configuration that was not quite a circle and not quite a row. A thermos. The bowl of rice crackers. Dr. Woo had a quality for this kind of preparation: she made spaces feel considered without making them feel constructed.
Adisa arrived first, which surprised Kai — Lagos to here was not a short trip, and he had expected him to be moving carefully, conserving energy. Instead he came in with the loose-limbed ease of someone who traveled often and had stopped needing to recover from it. He was taller than Kai had pictured from the name in Dr. Woo's notes. He had a specific quality of stillness that Kai clocked in the first ten seconds: not the stillness of someone suppressing movement, but the stillness of someone who had made a decision about what required their attention and this moment did not.
"Kai," he said, as if confirming something.
"Yes."
They shook hands. Adisa looked at him the way climbers sometimes looked at each other — not assessing, exactly. Placing.
"I read the statement," Adisa said. "The second one. *On What Cannot Be Transmitted.*"
"Yes."
"I kept wanting to send a response and couldn't figure out what it would add." He sat down. "That probably means it was right."
---
The Osaka climber arrived next. Her name was Sato Yuki, and she came in with the particular efficiency of someone who had calculated exactly how much time the journey would take and had arrived with two minutes to spare. She was younger than Kai had expected — mid-twenties, possibly. Floor 53.
"I am curious about this," she said, in precise, careful English, to Dr. Woo. "I don't know what we are going to find."
"Neither do I," Dr. Woo said. "That is intentional."
Sato looked at Kai. "You are the highest."
"Yes."
She nodded, filed this. "I will listen more than I speak, then."
"You don't have to," Kai said.
"I know." She sat. "I want to."
The São Paulo climber was joining remotely. Her name was Clara Voss — German family, third generation in Brazil, she had explained in a preliminary note that Dr. Woo had forwarded. Floor 51. Her video rectangle appeared in the laptop screen Dr. Woo had positioned at the edge of the table. She waved, a compact gesture, and said: "I can hear you all clearly."
---
Dr. Woo did not have an agenda. She said this at the start.
"I'm going to ask a few opening questions. Then I'm going to mostly stop talking. What I want is for you to be in a room together — or as close as we can get to that with Clara remote — and see what happens when people at this level have access to each other."
"Has this been done before?" Adisa asked.
"Not that I can find. There may be records I don't have access to. But the formal comparative study of upper-floor practitioners is essentially nonexistent. The sample size has always been too small."
Clara said, from the screen: "Insufficient."
A beat.
Kai looked at his hands.
"Yes," Dr. Woo said.
---
The first question Dr. Woo asked was: what did the upper floors start to feel like, relative to the earlier ones?
Adisa answered first. He had a quality for this — not rushing, not performing slowness either. He spoke the way someone spoke when they had been thinking about something for a long time and had arrived at a version they were willing to say out loud.
"The earlier floors felt like problems," he said. "That's not a criticism. They were problems, and solving them was right. But at some point the floors stopped feeling like problems and started feeling like — questions I was inside of. Not being asked. Inside."
Sato was quiet for a moment. Then: "Yes. That is the change."
Clara, on the screen: "For me it was a texture shift. The early floors had a texture like learning to read — effortful, then less effortful, but always the sense of decoding something external. Then, around Floor 40, the texture changed. It felt more like — remembering. Not a specific memory. Just the quality of remembering."
Kai listened to this. He had not been planning to speak yet. But the word Clara had used landed in a place that required acknowledgment.
"Sediment," he said.
Clara looked at the camera. "Yes. Exactly that."
Dr. Woo was writing something. She did not look up.
Sato said: "I used that word in my notes. About Floor 48."
Adisa: "I didn't use that word. I used archive."
The four of them were quiet for a moment.
---
It was not a dramatic moment. Nothing changed in the room. But there was a quality to it — the quality of several people recognizing simultaneously that something they had thought was specific to them was not only theirs, which was both a relief and a strange minor loss, and both of those were appropriate.
"The three of you," Dr. Woo said, carefully, "used archive or sediment, independently, before this meeting."
"Who's the fourth?" Clara asked.
"Kai used a different word. But the description matched."
Kai had actually not used either word in any document he was aware of. He had used the word *library* when talking to the intake desk man. Close enough.
"We arrived at similar language from different angles," Adisa said. "The thing we were describing generated similar words."
"Which means," Sato said, "the thing is consistent. Across different Tower installations. Different practitioners. Different backgrounds."
"It suggests that," Dr. Woo said. "The sample size is still — "
"Insufficient," Adisa said. Not unkindly. He was smiling slightly.
Dr. Woo made a sound that acknowledged the callback.
---
They talked for two hours.
Not structured — Dr. Woo's questions came occasionally, spaced enough that what happened between them was conversation rather than interview. Adisa described a floor at Floor 47 that had put him in a room with versions of himself at different ages, and the task had been to not try to change any of them. Sato described a floor at Floor 50 in which she had been required to do nothing for what turned out to be eleven hours, a session her Tower supervisor had flagged as potentially problematic until the floor opened. Clara described, from São Paulo, a floor at Floor 48 with a specific sound she could not identify that had eventually turned out to be, as far as she could tell, the sound of her own attention.
Kai listened to all of this. He spoke when something he had experienced corresponded directly, and he said so directly without elaborating beyond what corresponded. He was aware that Sato was doing the same — listening for the intersection, speaking into it, not performing comprehensiveness.
At one point Adisa said: "What I find is that the floors are more interested in what I'm carrying than what I can do. The early floors tested capacity. The later floors — " he paused. "They want to know what you brought in."
Kai thought about the Archive and the weight he'd noticed in the empty room. The grain of the wood.
"Yes," he said. That was all.
Adisa looked at him. "You know what I mean."
"I think so."
"But you found it differently."
"In an empty room."
Adisa nodded. "The floor chooses the format." He looked at the ceiling briefly. "I've stopped trying to predict the format."
---
At three o'clock Dr. Woo said she was going to wrap the formal session but that anyone who wanted to stay was welcome to.
Clara said she needed to go — it was nine PM in São Paulo and she had an early morning. She said goodbye with the same compact gesture she had used at the start, and her rectangle went gray.
Sato stayed. She sat with the quietness of someone who had decided to stay without requiring a reason to articulate.
After a few minutes she said to Kai: "The statement. *On What Cannot Be Transmitted.* There is a sentence in it — the one about participation. I have been thinking about it for three weeks."
"Which sentence."
She found it on her phone. "*Participation exists, but participation cannot be programmed.*" She looked up. "I wanted to ask: when you wrote that — did you already know it was true, or were you finding out while writing it?"
He thought about this honestly.
"Finding out," he said. "I wrote the sentence and then I understood it better than I had before I wrote it."
She nodded. "That is what I thought." She put her phone away. "Writing as knowing. Not recording knowing."
"Yes."
She was quiet for another moment. Then: "I think that is what the floors do also. They put you somewhere and you find out while being there."
He had not thought of it exactly that way. He thought of it that way now.
"Yes," he said. "I think that's right."
---
Floor 60 was in the Tower's upper section, in a part of the building he had not accessed before. The authorization had cleared two days ago, and he had waited. He was past the point of forcing access because access had opened.
He went in on Wednesday morning, the day after the meeting.
The floor was large. Larger than any floor he had been in since the early market rooms. High ceiling, indirect light, the floor itself a kind of pale stone that absorbed sound in a way that made his footsteps feel private.
There were other people in the room.
He stopped.
He had been told this was possible — the floors at this level could hold multiple practitioners from different installations simultaneously, because the Tower was structurally singular despite appearing in multiple cities. He had understood this intellectually since the explanation in Ch — since early in his time with the Tower. He had not encountered it before.
There were five of them. Spread around the room at irregular intervals, each one standing or sitting alone, each one present in the particular way that practitioners at this level were present — not looking around, not performing orientation, simply in the room with the quality of being fully arrived.
He recognized no one. That was expected — the three from yesterday had not mentioned entering Floor 60, and they were at 51, 52, and 53 respectively.
He found a place in the room and stood in it.
---
Nothing was asked of them.
He understood, within the first few minutes, that this was the floor's content: not something to do, but something to be in. The presence of others at the same height. The confirmation that he was not the only one who had gotten here, and that they had arrived independently, and that their paths had been different from his, and that here they were.
He looked at them, briefly. Not staring — taking in. A woman near the far wall, fifty maybe, with the contained stillness of someone who had been practicing longer than Kai had been paying attention to his practice. A man in his thirties near the center, sitting cross-legged on the floor, eyes closed, hands in his lap with a quality that was not performance. Two people on the far side he could not see clearly. One person standing near the window — the window was new, Kai had not seen windows in upper floors before — looking out.
He recognized something in all of them that he recognized in himself. Not a trait. A texture. The thing you developed over years of doing this kind of work, which was not visible in any specific attribute but which was present as a quality of the whole. Like grain. You could see it if you knew how to look.
He did not speak to them. None of them spoke to him. This was not unfriendly — it was appropriate. There was nothing to say that the room was not already saying more accurately.
He sat down near where he had been standing and let the room be what it was.
---
The floor took three hours.
When the door appeared, each of the six practitioners in the room moved toward it at different times, at their own pace, without coordinating. Kai went fourth. He did not look back as he went through, but he was aware of the other three behind him, and he thought: they will come through when they come through.
The corridor was empty when he arrived. He stood in it for a moment.
SABLE's message arrived as he was heading for the stairs: *How was it?*
He typed back: *There were five other people in the room.*
A pause longer than usual.
*That is the first time that has appeared in any session data I have.*
*It happened.*
*Yes,* SABLE said. *I believe you.*
The word *believe* had been in SABLE's vocabulary since Ch25. He had not stopped noticing it when SABLE used it, which was not often and never without reason.
He went down the stairs and out into the afternoon.