She faded at eleven o'clock in the morning on the third day.

He was in the east room when it happened. He was at the secondary desk with his drafting materials — not the modification documents, those were complete and built; these were the preliminary sketches for something he was beginning to think about, something he had not yet named or described to her, an architectural question that had been forming since the morning of the first day and that was not ready to be shown. He was working through the question in the preliminary way, making marks on paper without deciding what the marks would become, and she was in the doorway of the east room with the research notebook, annotating the Zone's current state in the east room's materials.

She had been in the doorway for approximately twenty minutes. She moved through the house with him and positioned herself in doorways rather than inside rooms, in the specific way of someone managing their own spatial relationship to solid surfaces — maintaining the threshold position where movement in any direction remained available, where the wall was present but not immediately adjacent. He had noticed this pattern on the second day and had not commented on it, understanding it as a functional adaptation rather than a preference.

She was in the doorway making a notation and then she was not.

Not absent — he could still see her, barely. The quality of her presence dropped suddenly and dramatically, the edge diffusion he had been learning to read going from its usual degree to something significantly more pronounced. She was there in the way of something viewed through very thick glass, or very far away, or both: present in outline and absent in substance, the specific quality of a person becoming theoretical.

He was on his feet before he had decided to stand up.

He said: "Iris."

She said something. The sound that came through had the attenuated quality of the cross-section audio — present but translated, the words arriving in a form that required interpretation. He moved to the doorway and then stopped because moving through the doorway meant moving through her, which was possible in the technical sense and which he was not going to do.

He said: "Can you hear me?"

Her voice, translated: "Yes. I can hear you." A pause in which her outline remained approximately fixed in the doorway. "The mechanism is doing something. I'm documenting it."

He said: "Can you step back? To the corridor?"

A longer pause. Then her outline shifted — moved back, through the threshold, into the corridor space behind the doorway. The movement was effortful in a way he could see from the quality of it, the specific quality of effort translated into motion rather than held.

He went to the corridor.

She was there, in her reduced state, approximately two meters from the east room doorway. He stood in the corridor and looked at her and thought about the quality of looking at someone who was becoming less visible, and found that the quality was not something he had a prior category for in any professional or personal register.

He said: "Tell me what's happening."

Her voice, slightly less attenuated than before: "The diminishment rate has increased temporarily. It does this — the archive mentions episodic acceleration, periods of higher rate followed by stabilization. I knew to expect them. I wasn't certain when the first one would occur." A pause. "I should have told you to expect them as well. I apologize for the — " She stopped. "For the quality of what just happened."

He said: "Don't apologize."

She said: "I startled you."

He said: "Yes."

She said: "I should have warned you they were possible."

He said: "You're warning me now."

She said: "Yes. They will occur with increasing frequency as the mechanism advances. The duration is variable — the archive says between twenty minutes and three hours. The quality of the episode is — " She paused. "I am less accessible during them. The physical presence drops and the perceptual capacity reduces." A pause. "It's unpleasant. Not painful in the registered sense, but unpleasant. The world becomes less legible."

He said: "The world."

She said: "Everything at once. The visual resolution drops, the audio becomes what you are hearing now, the sense of spatial position becomes less reliable. I was in the east room doorway and then the east room doorway became — approximate. A general direction rather than a specific location."

He stood in the corridor and looked at her approximate presence and thought about what she had just described and found he did not have adequate vocabulary for his response to it, which was unusual; he had always had architectural vocabulary for the quality of space and physical vocabulary for the quality of materials and he had developed, across forty years, a vocabulary for the quality of her correspondence. He did not have vocabulary for this.

He said: "What do you need?"

She said: "Stay close. The archive indicates that the proximity of the attachment object moderates the episode duration. You being in the corridor rather than the east room is — " She paused. "Better. The legibility is improving."

He moved closer.

Not through her — he maintained the operational gap, the distance they had been navigating since the first morning. But he moved until the gap was smaller, until he was close enough to see the quality of her reduced presence in more detail, until the space between them was three feet rather than six.

Her outline clarified.

Not fully — not back to the quality he had been learning to read across two days of the east room and the kitchen and the corridor and the library. But it improved: the edge diffusion reduced slightly, the outline sharpening back toward its usual degree. The translated quality of her voice reduced as well, the audio becoming more standard, less attenuated.

She said: "Yes. That's — measurably better." A pause in which he could see her attending to the notebook, making a notation despite the reduced legibility. "The proximity variable is significant. More significant than the archive quantified."

He said: "Stay in the corridor. Don't go back to the doorway."

She said: "The doorway is a strategic position for Zone monitoring."

He said: "The corridor is a better position for your current state."

She said: "The Zone monitoring — "

He said: "The Zone monitoring can wait."

A pause. She said: "It cannot wait indefinitely. The boundary shift data needs to be collected at regular intervals or the model loses accuracy."

He said: "The model can tolerate reduced accuracy for the duration of this episode."

She said: "You are asking me to reduce the rigor of my data collection."

He said: "I am asking you to stay in the corridor."

Another pause. She said: "For how long."

He said: "Until you're back to your usual quality. I'll tell you when."

She said: "You are going to monitor my edge diffusion and inform me when it returns to its baseline value so that I can resume optimal Zone documentation."

He said: "Yes."

She said: "That is a division of labor I had not anticipated."

He said: "I have been learning to read your quality of presence for two days. I have sufficient observational data to monitor it."

She said: "You have been calibrating your observation of my edge diffusion."

He said: "I have been paying attention. Which is what I do."

The pause that followed had a different quality from her usual pauses — not the processing pause of someone building a precise answer, but the pause of someone who has received something and needs a moment before responding. She said: "I know. I have forty-three years of data on that." Another pause. "The east room can wait."

They stayed in the corridor.

He stood close enough that the episode continued to moderate — her outline sharpening by increments, the audio quality improving in small steps, the specific quality of her presence returning toward the level he had been learning to read. He watched her edge diffusion the way he watched a building settle: not expecting immediate change, willing to be with the process, attending to each increment of movement in the right direction as a fact rather than a relief.

She said, after approximately fifteen minutes: "The notebook is becoming more legible."

He said: "Good."

She said: "The corridor wall is becoming more legible. The Zone boundary is approximately — " She looked. "I can see the thermal differential at the storage room threshold more clearly now."

He said: "Don't move toward it."

She said: "I'm not. I'm observing from here." A pause. "The boundary is stable. The north corridor wall shows the expected propagation pattern."

He said: "Good."

She said: "You said that twice."

He said: "Both times I meant it."

She said: "I know." A pause. "Your voice sounds — different during the episodes. I don't have prior data for what voices sound like when they are genuinely concerned about you. It's a new variable."

He said: "I'll try to be more consistent."

She said: "Don't. The variation is informative." She made a notation. "I'm collecting data on what your voice sounds like when you are — " She paused.

He said: "When I am what."

She said: "I don't have the right term. I'll continue collecting until I can categorize it accurately."

He said: "In the meantime."

She said: "In the meantime, the evidence suggests it sounds different from your other vocal registers. Quieter. More — " She paused again. "Contained. Like something is being held in a smaller space than usual."

He said nothing.

She said: "Is that accurate?"

He said: "Yes. That is accurate."

She looked at him with the look that was fully open, the window at its widest, no management of what came through. She said: "I'm sorry. For the quality of what you just experienced. I know the archive doesn't prepare you for — for what it looks like from the outside when the episode happens."

He said: "No."

She said: "I should have been clearer about what to expect."

He said: "I would have found a way to be inadequately prepared regardless. There is no version of the preparation for that."

She said: "No. I don't think there is." A pause. "I could see you from inside it. When the spatial position became approximate — when the east room doorway became a direction rather than a location — you were still specific. The other things lost resolution but you were specific." She looked at her wrist. "I'm documenting that. For the data. But also — " She stopped.

He said: "Also."

She said: "Also because I want you to know it. Not as data. Just as a thing that was true."

He said: "I know."

She said: "Do you?"

He said: "You were in the doorway and then you were almost not in the doorway and then I moved closer and you clarified and I am going to continue moving closer when that happens, for as long as moving closer is available to me as an option." He paused. "That is also a thing that is true. Not as data."

The corridor held them at its current distance — the operational gap, the three feet that were now the normal geography of their being in the same space. He looked at her at three feet and thought about forty years of ten years and this was three feet and forty years of ten years had not prepared him for three feet and he thought it was possible that nothing adequately prepared you for the actual distance after the theoretical one, because the actual distance was a different kind of thing entirely.

He extended his hand.

Slowly, deliberately — not the reaching-without-thinking, not the notebook incident. The same extension he had made across the study desk on the first morning, palm-up, the considered movement of a specific intention. He extended it toward the space between them, not reaching to her, not bridging the gap, just offering the gesture — the shape of what the extension meant, without requiring it to arrive anywhere.

She looked at his hand.

She extended hers toward it — the same hovering, the same geometry as the first morning, her hand above his, the fracture visible at this proximity, the almost-meeting held in the space between.

Her presence was clearer at this distance. Clearer than it had been during the episode. Clearer, even, than it had been before the episode — as if the episode and the recovery and the corridor and the proximity variable and the voice-that-sounded-different had together produced a density of the present moment that was legible in a different way.

He looked at the space between their hands and thought: this is the distance we have been at for forty-three years. Not three feet. This distance. This specific distance between the almost and the actual. He thought: we have been in this distance since the coal diagram and the warm wall and the first letter and all of it, and I have been reaching across this distance and she has been reaching across this distance and neither of us has been in the same room to do it before now, and we are in the same room now, and the distance is still here, and it is also — different. From this side of it.

She said, very quietly: "When it changes. When the mechanism shifts. I'll tell you before it happens, if I can tell."

He said: "How will you know?"

She said: "The fracture quality changes first. It's happened twice today, small shifts. When it's a large shift, I think I'll know it's coming." She paused. "I can't promise. The mechanism is not fully characterized yet. But I'll try."

He said: "Trying is sufficient."

She said: "It's the most I can reliably commit to."

He said: "You said that last night. About the timeline data."

She said: "I have a consistent upper bound on what I can commit to."

He said: "I know. I'm not asking for more than the upper bound."

She said: "I know you're not." She withdrew her hand slowly. He withdrew his. "The Zone boundary in the corridor has shifted another two centimeters since the episode started. I should document it before the evening measurement."

He said: "How are you?"

She paused in the act of opening the notebook. She said: "Better. The episode quality has resolved to approximately baseline." She paused. "And — " She looked at him. "Better than that. By a margin I wasn't expecting."

He said: "Good."

She said: "You said it again."

He said: "I mean it again."

She looked at him for a moment in the way she looked at things that were going into the taxonomy — into the specific category that was developing sub-categories of its own as the days accumulated. She said: "Documenting now."

She opened the notebook.

He stayed in the corridor while she moved back toward the east room doorway, closer to the Zone boundary, resuming the monitoring position. He watched her go and thought about the episode and the three feet and the hand extended palm-up and the voice that sounded different when he was genuinely concerned and the thing she had said: *you were still specific.*

He thought: I have been specific to her since Cycle One. She has been specific to me since Cycle One. We have been specific to each other across forty-three years of letters and objects and one day in the same corridor. He thought: specificity is what you call it when you cannot name the larger thing. He thought: I have been learning to name the larger thing across forty years and I have more vocabulary now than I have ever had, and the vocabulary is still insufficient, and insufficient is closer than nothing.

He went back to the east room and the preliminary sketches and the question he was working on that was not ready to be named.

Outside the window, the morning was its ordinary self. The south corner tree stood in the midday light. Somewhere at the end of the corridor, the thing that observed was not currently observing. The Zone held its current extent, propagating slowly through the house's modified surfaces.

He picked up the pencil.

He made a mark on the paper that was not yet a decision and was already the beginning of one.