The workshop smelled of cutting oil and hot metal and the particular brand of desperation that only exists in rooms where men are trying to invent the future before someone else does. Luca Bellardi stood over his lathe at three in the morning, watching a brass rod spin into a cylinder so perfectly round it seemed to defy the very concept of roundness, and felt the familiar ache behind his eyes that meant the visions were coming again.

They had started in the trenches of the Argonne, during the winter of 1917, when a mortar shell exploded in the dugout next to him and something in his brain shifted like a gear slipping its sprocket. For three days he lay in a field hospital in Champagne, half-conscious, listening to a French nurse sing lullabies in a voice that sounded like his mother's, and in those three days he saw machines. Not machines as they existed—the clunky, imprecise things that American factories produced in thousands—but machines as they could be. Machines with tolerances measured in ten-thousandths of an inch. Machines with cooling systems that prevented warping. Machines that could cut stainless steel the way a knife cuts butter.

When he woke up, the visions stayed. They lived behind his eyes like a second set of memories, clear and detailed and utterly impossible. He could see the machines in his mind's eye the way a musician hears a symphony—the geometry of every component, the sequence of every operation, the exact specifications of every tool required to build them.

He told himself they were dreams. He told himself they were the fevered product of a brain damaged by shock and noise and the particular kind of terror that only men who have watched their friends torn apart by high explosives can understand. But dreams don't come with technical drawings. Dreams don't include the precise angle of a cutting tool's edge or the optimal feed rate for a given material. Dreams don't tell you, in excruciating detail, how to build a four-axis numerical control system using parts you can buy at any hardware store in Brooklyn.

Luca built the workshop in 1919, with money he had saved from his army discharge pay and a loan from a cousin in Paterson who believed that Italians who came home from the war with ideas were worth investing in. He bought a used lathe, a milling machine, and a drill press from a bankrupt foundry. He worked sixteen hours a day, seven days a week, machining parts to tolerances that made the other shop owners in Brooklyn stare at his products with a mixture of admiration and suspicion.

By 1921, he had a waiting list of customers. By 1923, he had moved to a larger space in Williamsburg and hired three machinists. By 1925, his company—Bellardi Precision Manufacturing—was supplying components to Ford, to Westinghouse, to companies that had never heard of Luca Bellardi and didn't care about the Italian kid from Brooklyn who claimed he could machine anything.

The money came fast. The parties came faster. The jazz age was in full swing, and Luca found himself at the center of a world that would have been unimaginable to the family he had left behind in Naples. He wore tailored suits, drove a Packard, dined at the best restaurants in Manhattan. He danced with Claire Henderson, a singer at the Cotton Club whose voice could make a grown man weep and whose eyes held a sadness that Luca found both magnetic and terrifying.

Claire sang at the factory opening party in October 1925. She wore a silver dress that caught the light like liquid mercury and sang a song about a man who built a castle out of sand and watched the tide take it away. Luca watched her from the top of the factory stairs, surrounded by men in expensive suits and women in expensive dresses, and felt something crack inside his chest.

After the party, he walked home alone through the streets of Brooklyn. The city was quiet at two in the morning, the way only a city can be quiet—full of sounds that suggest silence rather than containing it. Streetcars clacked in the distance. A saxophone played somewhere down the block. The smell of fried food from a night market mixed with the cold October air.

He stopped on the Brooklyn Bridge and looked out at the Manhattan skyline, all lit up like a Christmas tree that had grown to enormous size. The factories were still running. He could see the smoke from the stacks, dark against the orange glow of the city. Every light was a machine. Every machine was a man, or a woman, or a child, feeding it something it would never give back.

He had spent six years building this. Six years of sixteen-hour days, of sleeping on a cot in the workshop, of eating cold beans from a can because he couldn't afford to take a lunch break. Six years of visions that came in the night and kept him awake, showing him machines he couldn't build fast enough, designs he couldn't refine quickly enough, improvements that always seemed just out of reach.

And for what?

He had made three hundred thousand dollars. He had a factory that employed forty people. He had a Packard and a suit collection and a relationship with a woman who looked at him the way a starving man looks at a feast—with hunger and fear and the terrible knowledge that nothing this good lasts.

He walked home and lay on his cot in the workshop and closed his eyes and saw machines. Not the beautiful, precise machines of his visions, but machines as they really were—greedy, insatiable things that consumed metal and fuel and human lives and produced nothing but more machines, each one requiring more machines to build it, in an endless loop of production that led nowhere and achieved nothing and would continue long after he was dead and the metal had rusted and the factories had collapsed and the city had moved on to the next thing.

He opened his eyes. The workshop was dark. The machines were silent. For the first time in six years, he was grateful for the silence.

The next morning, he called a meeting with his engineers. He sat at the head of the long table in his office, surrounded by blueprints and technical drawings and the accumulated detritus of six years of obsessive creation, and told them he was going to publish everything.

"Everything?" His head engineer, a German named Weber who had come to America in 1913 and never looked back, stared at him as if he had announced he was going to burn the factory down.

"Every design. Every process. Every technique. I'm going to publish it all in a technical journal. I'm going to send copies to every manufacturing association in the country. I'm going to make sure that every machinist in America has access to what I've figured out."

Weber was silent for a long time. Then he said, "You'll destroy your competitive advantage."

"I already destroyed it," Luca said. "The advantage was never mine. It was a dream. And dreams aren't owned by anyone."

He published the designs in January 1926. The technical journals printed them. The manufacturing associations distributed them. Within six months, Bellardi Precision Manufacturing was no longer precise, because everyone else was precise too. The contracts dried up. The customers went to cheaper suppliers. The factory that had taken six years to build collapsed in two.

Luca kept it running, barely. He fired half his workers. He sublet half the space. He worked the lathe himself every morning before his employees arrived, machining parts for customers who paid him in cash and didn't care about his reputation.

Claire left him in March. She didn't make a scene. She simply stopped coming to the factory, stopped answering his letters, stopped existing in the world he inhabited. He found out from a mutual acquaintance that she had taken a position in Chicago, singing at a club on State Street, and that she was happy.

He stood on the Brooklyn Bridge one more time in April, looking at the Manhattan skyline, and watched the smoke from the factories rise into the sky like prayers from a thousand churches. He didn't feel angry. He didn't feel sad. He felt something he couldn't name, something that was neither hope nor despair but existed in the space between them, the way a cutting tool exists in the space between the metal and the truth.

He went home and made himself a cup of coffee and sat in the workshop and listened to the machines breathe in their sleep. And for the first time in six years, he didn't see any new designs behind his eyes. He just saw metal. Just metal, waiting to be shaped, waiting to become something useful, waiting to be returned to the earth when its usefulness was done.

The coffee was warm. The workshop was quiet. The city was waking up. And Luca Bellardi, who had once seen the future in the geometry of spinning metal, sat very still and listened to the present, which was all he had ever really owned.