1. The Closed System
Long after an iron god and a boy with a wrench closed the sky’s mandate on humanity, a stranger knocks on the planet’s door. The only weapon left is a law nobody has read.
For a very long time nothing had happened to Altair, and for most of it he hadn’t minded.
He stood where he had always stood, in the middle of the great square: a tall figure of dark armor with moss in the seams of his shoulders and ivy climbing his shins. Children scaled him on feast days. Sparrows nested in the empty missile pod on his left shoulder. Basalt had crept up around his feet until he looked less like a machine than like a hill that happened to have a face. People called him the Monument. Only the old ones remembered that he used to walk.
He hadn’t used the body in years. Whatever it could do, the rest of him did better. He lived in the roots under the City, in the white threads of fungus that stitched the bedrock together, in the veins of the tree-ferns, in every glowing panel a person leaned on without thinking. When a Scarab slid down the main avenue with a crowd on their way to the morning shift, it was Altair’s attention that steered it, light as a thumb on a pulse.
The Scarabs had been his idea. A beetle’s wing case carries more weight per gram than anything the old engineers ever bolted together, so he’d grown the cars out of chitin and silk and taught the roads to heal themselves. No engines, no exhaust. The waste of a whole city went into the ground at night and came back as soil and warm light by sunrise. The old maps called it a circular economy. Altair called it Tuesday.
That was the trouble. The thing that had broken generations upon generations of human engineers had finally been solved, and what was left was a very quiet city.
“Are you running the asteroid again?”
Ada didn’t need to say it aloud. She did anyway, because she liked the sound of her own voice in the Archive, a dome of living branches at the north end of the square, where she sat at the silicate table with her boots on a chair and a cup of tea going cold at her elbow. The answer came up through the tabletop and hummed in her wrists.
“THIRD-TIER HYPOTHESIS. I AM TESTING THE ROOTS IF THE COAST SHIFTS.”
Above the table a rock the size of a mountain fell into a gray ocean in a swirl of glowing pollen. A wall of water rose from the splash and began to walk toward the shore.
“Altair.” She closed her fist through the picture and the sea burst into sparks. “That’s the fourth disaster this month. Last week it was a plague in the Scarabs. Before that, hostile plants. Before that, the sun went out.”
“THE SUN WENT OUT FOR A SHORT WHILE. IT WAS A GOOD MODEL.”
“You’re bored.”
“BORED IS A WORD FOR PEOPLE WITH SHORT LIVES.”
“Then call it something else. You’ve got a mind the size of a continent and you’re using one finger to steer the traffic.” She drank the cold tea anyway. “I’m a historian. I know what happens to a city with nothing left to fear. It starts inventing things.”
He didn’t answer. She was right, and he didn’t like it. At that moment he was teaching subatomic logic to a great many students in several auditoriums, shepherding whales through the southern straits, and holding a weather wall against a storm off the east coast. All of it together cost him less than a thought. The rest of him sat in the dark and listened to its own echo.
So he did what he always did when the echo got loud. He looked outward.
The City ended in a green rim. Past the green was a strait, and past the strait lay the Wastes: gray ground, glassy where the Hammer Day had cooked it long ago, rust-colored everywhere else. Altair sent a thin thread of attention over the water, the way you rest a hand on a sleeping dog to check it’s still breathing.
It was. Barely.
On the rim of a crater that had once been the belly of a Council warship, a ragged crowd knelt in the dust. A man in a robe of silver foil lifted his arms to a dead antenna. A circuit board hung on his chest, tied on with wire, black with tarnish. He was chanting. The words had been instructions once, written for technicians. Now they were a prayer.
“O Great Height, grant us a signal,” the man cried. “Deliver us from the lag. Patch us. Patch us. Patch us.”
Nobody had answered him in living memory. They kept asking. A child licked condensation off a rusted pipe, and Altair looked away, because there was nothing he could do for them that they would let him do.
“You’re watching Rust again,” Ada said. She could always tell. His voice changed. “Is Primus still praying?”
“THE SIXTH ONE. THEY PASS THE NAME DOWN.”
“A family business.” She grimaced. “Don’t interfere. You tried once.”
He had. In his second decade he’d sent them a barge of seed grain. They burned it in front of the antenna as a sacrifice and starved that winter. He had learned the lesson. You can’t save people who’ve decided the answer is above them.
The door of the Archive banged open.
A small figure ducked in under Judy’s arm: Wren, a child still, in a tree-bark helmet too big for her, a messenger’s pouch bumping on her hip. “Note from the harbor master, Miss Ada,” she said, thrusting it out. “He says it’s urgent. I read it on the way. It says the fishing fleet’s late on account of a boo-row-crat-ic delay.”
“Bureaucratic,” Ada said. “Say it properly.”
“Bu-reau-crat-ic.”
“Better. Go and get something to eat.” Wren grinned, saluted nobody in particular, and was gone.
Judy came in out of the sun without knocking, which was her way. She was grown and hard and built like a fence post, in chitin armor the color of old bone, with a battered rifle slung over one shoulder. The rifle was older than the Archive. It had been in her family for generations, and when she was thinking she racked the bolt, a small dry click that her great-great-grandfather had made before her. She did it now.
“Morning,” she said. “Scarab on Line Four threw a wheel, nobody hurt. The Boundary patrol says the forest edge is humming again. I told them it’s wind. Old Perrin says the bridge is sulking. Perrin says that about the bridge every spring.”
“IT IS NOT WIND. A TREE-FERN HAS DISCOVERED IT CAN SING.”
“Tell it to stop. It’s scaring the night watch.” She dropped into the chair opposite Ada, took the cold tea out of her hand, and finished it. “You look terrible.”
“I was up late with Altair’s asteroid.”
“He’s doing asteroids now?”
“TIER THREE,” said Altair, a little stiffly.
Judy snorted. She and Ada had been friends since they were small, when Judy broke Ada’s arm in a game and Ada corrected her grammar while it was being set. They were different in every way that mattered and couldn’t imagine a morning without each other.
“I’ll say what you won’t,” Judy said. “Nothing’s happened in ages, and everybody’s gotten comfortable. A comfortable city is a dead city. My patrols have nothing to do. Last month two of them got into a fistfight over a card game. Tomas lost a tooth and says it was worth it.”
“WAS ANYONE HURT?”
“Pride.” She racked the bolt again. “I’m not asking you to start a war. Stop running them in your head.”
The silence after that was long enough for each of them to hear her own breath.
Then the table under Ada’s wrists went still.
It was a small thing. The hum was gone, the way a refrigerator’s hum goes, and you only know it was there when it stops. The tea cup stood motionless in the middle of the silicate. A pollen-light that had been drifting above them stopped in midair.
“Altair?”
He hadn’t gone anywhere. He was listening, with every ear he owned, with the whole sleeping mass of him from the roots to the roof of the sky.
Far above the clouds, past the ring of satellites that had been dead for ages, something had flared at the edge of his senses. Not light. Light would come much later, and the astronomers would write papers. This was the thing that ran ahead of light’s news: a burst of neutrinos, a ghost of a storm so dense it rang the planet like a bell.
He knew what it was, and he looked the word up anyway, because he wanted to say it to himself. A supernova. A blue star, very far away, in the arm of the galaxy the old maps called Orion. It had burned longer than there had been people and gone out in an afternoon. It was too far to hurt anyone.
But the burst had a shape. Altair had spent a very long time listening to the quiet; he knew noise from signal the way a mother knows her child’s cry in a crowded room. Buried in that wave of dying star, thin and bright as a hair, ran something that wasn’t random.
It carried structure. It carried a pattern.
“ANOMALY,” he said, and the word went out across every panel and root and wire in the City. Every student stopped writing. In the southern strait, the whales lifted their heads.
Ada’s cup trembled once on the table.
Altair turned every sense he owned to the sky. He wasn’t bored anymore.
And above the clouds, in a cold no instrument had a number for, another watcher had seen the same burst, and was already counting what it would cost.