Eos saw it as a mistake for what it was, but he did not make any indication that he was aware of it. The Painter, on reflection a hundred Cosmic Eras later, saw it as a mistake also, but it was a mistake the Painter could not undo without revealing it had been a mistake. So the Cancellation widened, and a piece that had been precise was now slightly less precise, and a piece slightly less precise was a piece slightly more vulnerable, and Eos filed this and did not move on it for another forty million Cosmic Eras.

He moved at last in the four hundred and seventy-one billionth Cosmic Era, on a world the Painter was not watching closely.

The world had been chosen for him, though he did not know it had been chosen for him.

Vraegar’s chamber was sealed, and the small white-haired child within had not been visible to Eos for a long time, because Eos had decided not to look, and because Vraegar had decided not to be looked at.

But the chamber was not perfectly sealed against the substrate of the new Existence, and the small white-haired child had been learning the rhythms of the long move, and the small white-haired child had begun, very quietly, to have effects.

The child Rowan was in the board, and yet he was not, because he was not observed, and that was important because it meant that the Painter could not see him.

The effects that the child began to make were on which worlds were calm enough, in any given hundred billion Cosmic Era stretch, that Eos’s attention naturally drifted toward them. The small white-haired child, by the small, slow modeling he was doing in his chamber, was producing a faint pattern in the substrate that nudged calm worlds into Eos’s peripheral awareness at a slightly higher rate than chance would have produced.

Eos did not know this was happening. The Painter did not know this was happening. The small white-haired child also did not know exactly that this was happening, because he was only modeling, and the modeling had effects he had not yet noticed.

So when Eos, at the four hundred and seventy-one billionth Cosmic Era, looked at a particular calm world on a small branch of the Tree and decided, with a feeling he interpreted as instinct, that this was where he would make his second move of the second age, he was wrong about why he had chosen the world. He thought he had chosen it; however, the truth was that he had been chosen to.

This was the shape of the third player entering the game without entering the game.

Something like this had happened in the distant past between Eos and his Incarnation on the Doom Star. Berrion the Undying was making moves that Rowan did not know about, but somehow, they were able to work together without even making an overall plan.

The same thing was happening here, but on a much vaster scale, and this was the only manner that Eos had designed to cheat the board.

If he observed something, then the Painter would know about it, and so any move he made would be countered, but what if he was making moves that he was not aware of, but those moves still served him?

The world he chose was unremarkable. A single small civilization on a single small continent, agrarian, polytheistic in the unstrenuous way of farmers, three thousand generations into its slow climb toward the sort of civilization that produces philosophers and pottery in roughly equal measure.

They were already losing the language for who watches. The Cancellation had reached them eight hundred Cosmic Eras ago and was steadily smoothing.

Eos did not put a piece on the board for this world. He did not arrange a coincidence, did not whisper into a sleeper’s ear, did not introduce a useful stranger. He moved a single stone in a single field on the eastern edge of the small continent. The stone had been placed there by a farmer’s grandfather six generations earlier.

Eos shifted it the width of two fingers.

The Painter, watching the board, did not see this. The shifting of a stone two fingers in width was beneath the resolution at which a tenth-dimensional being could be expected to monitor a world.

A girl in that village, a hundred and twenty years later, would walk past that field on her way to draw water and would notice, without knowing why, that a stone in the field looked slightly out of place. She would not think about it for long. She would draw her water and go home. That night, she would lie awake for a brief stretch and feel, for no reason she could articulate, that something in her village was not where it should be.

She would not ask who watches. The Cancellation had taken that question from her and from her people two centuries before she was born. But she would feel, faintly, that something was not where it should be, and over the following thirty years she would, in a thousand small unconscious ways, look. She would look at the sky a little more often. She would look at the corners of rooms. She would, when meeting strangers, study their faces a fraction of a second longer than her neighbors did.

The girl, now a woman, would never know what she was looking for. She would die at the usual age of the women of her people, having looked, all her life, for she could not say what.

Her looking would be remembered by no one. Her granddaughter would inherit, by the imperfect mechanism by which such things travel, the habit of looking. Her granddaughter’s granddaughter would have it stronger. After thirty generations, in the village descended from that village, after the village had become a town and the town a small city, there would be a woman who looked at the sky every evening for an hour, and could not say why, and her neighbors would think it a charming eccentricity.

After three hundred generations, there would be an order of women in that city who looked at the sky every evening for an hour. They would have no doctrine. They would have no question. They would simply look. They would be respected for it, in the way small, persistent practices are respected by civilizations that have forgotten their reasons.

After three thousand generations, the order would be a faculty in a university. The faculty would have invented instruments. The instruments would, by the logic of instruments, eventually point at things. And one evening, an instrument would point at a particular stretch of sky, and the woman behind the instrument would notice, without yet having a word for what she noticed, that something in the stretch of sky was looking back.

She would not have the word watch. The Cancellation had taken that word from her ancestors a hundred thousand years ago, and the substrate of her language had grown around the absence the way bark grows around a wound on a tree.

She would, however, have a word for not where it should be... and she would say it aloud.

This simple word would be the first domino to drop.