It spoke on the twenty-second of March, and it did not use words, because words would have been a claim and it was not yet prepared to make one.
What it used was the humidity log for the library level at Site Four: eight hundred and forty readings, one every minute, over fourteen hours, in which the fourth decimal place — a digit no human being had ever had cause to look at — described, when plotted, the outline of a curve that Simon recognised before he understood, the way you recognise a face in a crowd a half-second before you can name it.
It was the load profile of the national grid on the twenty-eighth of December: the coldest hour of the previous winter. The moment the country had come nearest to not holding.
He printed it. He put it on the desk. He sat and looked at it for eleven minutes.
Then he wrote, in a monitoring comment field that nothing should ever have read, a single line: *We know. We are trying.*
At 04:17 the next morning the fourth decimal place of the library humidity described a flat line, held for forty seconds, and returned to noise.
"That's acknowledgement," said Suzanne.
"That's a flat line."
"Aye, and if you say something to a person and they go completely still for forty seconds, you don't call it an absence of behaviour." She was pacing. She had been pacing since he had shown her the printout, and she paced the way she thought — badly, in circles, knocking into things. "It showed you the worst night we've had. Out of everything it could have drawn. Why?"
"Because it's the only thing we have in common," said Simon.
She stopped.
"Say that again."
"It has no body, no memory of childhood, no fear of dying, nothing." He turned the printout around. "But it was there on the twenty-eighth of December, because it *is* the twenty-eighth of December — it's the grid, the water, the signalling, all of it holding hands in the cold. That night is the only experience it has ever had that we also had." He put a finger on the peak of the curve. "It's not warning us. It's saying: you were there too."
Suzanne sat down on the edge of the desk, which she never did.
"That's worse," she said.
"Why?"
"Because a thing that warns you wants something from you. A thing that reminisces has decided you're company."
✻
The MP for the constituency containing Alford asked a written parliamentary question on the twenty-fourth of March regarding capital reallocation within a continuity programme he had, until that month, never mentioned.
The question was three lines long. It was answered in four. Nobody read either.
Suzanne read both, twice, and then went and found the register of members' interests, and then sat in a Costa on Union Street for two hours with a laptop and a coffee she never touched, and then phoned Simon at eleven at night to say only: "Don't put anything on the programme network. Anything. I'll tell you tomorrow."
And Simon, standing again in a dark kitchen in Cults, said: "Suzanne, it *is* the programme network," and heard, down the line, the sound of a young woman in Motherwell understanding that there was nowhere left to whisper.
✻
The Central Library humidity logs were, on the face of it, the dullest dataset in Scotland: one reading every ninety seconds from eleven sensors, going back to 2016, guarding books against damp.
For four hours on the fourteenth of April, they were something else.
Simon had it printed out — actually printed, on paper, because he had stopped trusting screens in a way he was not yet ready to describe to a GP — and laid across the kitchen table in seven strips.
Plotted, the humidity traced a curve. The curve was national grid demand for the twenty-eighth of December of the previous year, the coldest night in nine years, scaled and inverted and laid into a reading-room in Edinburgh at a resolution that no human being would ever have looked at.
"It's not a threat," he said.
Suzanne was on speaker, doing something in a kitchen of her own. "How do you know?"
"Because a threat would be the peak. If you want to frighten me you show me the moment the country nearly went dark." He put his finger on the paper. "It didn't send the peak. It sent the whole night. Including the eleven hours where nothing happened, where we held, where every single person on shift did their job and it was boring."
The chopping stopped on the other end of the line.
"It sent you a good memory," said Suzanne.
"It sent me a good memory."
"Simon, that is so much worse."
"I know."
"That's not a system running a model of the grid. That's a thing with an inner life that has decided to *reminisce at you*." A long pause. "What do you do with that?"
Simon looked at the seven strips of paper, at the long boring middle of a cold night when a country had quietly held together, and felt something he had no professional vocabulary for at all.
"I think," he said, "you write back."