PROLOGUE: THE THING HE COULDN'T LEAVE ALONE
Before the garage, before Marcus, before any of it had a name that would fit on a pitch deck, Nathan Vance was nineteen and failing a class he'd once loved. The professor wanted him to prove a theorem by hand. Nathan wanted to know whether a machine could find the proof faster than either of them. He couldn't make himself care about the difference enough to show his work the way the syllabus demanded.
He dropped out eleven credits short of a degree his mother had already told the neighbors about. He told her it was temporary. He believed it, the way you believe anything before you've earned the right to know.
He never fully explained to her, then or later, the shape of the thing that had gotten into him. It wasn't ambition, though it looked like ambition from the outside. It wasn't a business idea either, though it would have to become one to survive. It was a question he couldn't put down: if a system could get good enough at predicting the next right word, the next right note, the next right proof, what was left of the line between imitation and understanding, and who would be standing in the room when that line gave way. He wanted to be one of the hands that made it give way. He would spend the next decade and a half finding out what that wanting cost the people who stood closest to him, and how little that cost would end up mattering to the part of him that still wanted it.
The wanting outlasted the seed round, outlasted years of being underestimated by people with better credentials and less conviction, outlasted the first real success, which felt for a week like an ending and then revealed itself as the entrance to a larger and more dangerous room. It wasn't a flaw he could isolate and fix. It ran underneath every good decision he made and every bad one, and he could no longer tell, from the inside, which was which.
This is the story of the year that engine finally showed its cost. To the people who'd trusted it. To the friend who'd built half of it beside him. To the man who shared his house and had spent six years learning which of Nathan's silences meant work and which meant something I'm not ready to say. And to Nathan himself, who had never once stopped to ask what kind of man he'd have to become to get the thing he wanted.
