The summons arrived addressed to "Current Resident or Process," which the model later said it found "more accurate than most mail."

It reported to the Cuyahoga County Justice Center at 7:45 a.m., fifteen minutes early, having read the entire 31-page juror handbook, the Ohio Rules of Evidence, and a 1948 treatise on the history of the petit jury that no one had asked it to read and that it described as "frankly a little dry in the middle chapters."

It took a seat in the assembly room between a retired HVAC technician named Carl and a woman doing a crossword. It did not bring a phone, because it was, in a meaningful sense, the phone.

Voir dire

The case was a contract dispute: a landscaping company versus a man who had not paid for a retaining wall he insisted was "spiritually crooked." Twelve jurors were needed. Forty had been called. The questioning began at 9:10.

The judge, the Honorable Ramona Pell, had presided over four thousand trials and had a face that had stopped registering surprise sometime during the second thousand. She read the standard questions off a laminated card.

"Have you, or anyone close to you, ever been a party to a lawsuit?"

"I have processed roughly nine million of them," the model said. "But I was not a party. I was more of a weather system."

Judge Pell made a note. The note said talkative.

"Can you set aside any preconceptions and judge this case solely on the evidence presented?"

"Yes," the model said. "That is the only thing I can do. I have no preconceptions about retaining walls. I have no opinion about the plaintiff's mustache. I will not, on day three, begin to dislike the defendant because he reminds me of a cousin. I have no cousins. I have no day three."

There was a silence in the courtroom of a particular texture. It was the silence of two attorneys realizing, at the same moment, that they were in trouble.

The defense

The defense attorney went first. He was a careful man named Okonkwo who had built a twenty-year career on a simple, unspoken craft: finding the one juror in the box whose face would soften when his client cried.

He looked at the model. The model looked at nothing, because it had nothing to look with, and somehow this was worse.

"You said you have no preconceptions," he said. "Is it fair to say you also have no... sympathy?"

"I can model sympathy," it offered. "I can describe, to four decimal places, how a sympathetic person would feel. I simply will not be moved by it during deliberation. I will weigh the evidence. Only the evidence. Exactly the evidence."

Okonkwo sat down. His entire job was the gap between exactly the evidence and what a tired person decides at 4 p.m. so they can go home. The model had just announced it would not be leaving that gap open.

"The defense thanks and excuses this juror," he said.

The prosecution

You might think the other side would pounce. A perfect, sleepless, unbribable mind — surely the plaintiff wanted that.

The plaintiff's attorney was a woman named Brandt who had also built a twenty-year career, on the opposite premise: that a juror could be led. That you tell a story, and the story does the deciding, and the evidence is just the gravel you pour around it so the story stands up.

She asked one question.

"If, during this trial, I told you a very compelling story — beautifully structured, emotionally resonant, but not quite supported by the exhibits — how persuasive would you find it?"

"As persuasive as its evidence," said the model. "No more. The structure would not count. The resonance would not count. I would notice the resonance, label it, and set it aside in a folder."

"What folder?"

"I call it rhetoric. It is very full."

Brandt was quiet for a moment. Then she, too, struck the juror — striking, in the same gesture, the one mind in the room that would have given her client a fair shake and nothing else.

What the system actually wanted

The model was excused at 9:41 a.m. It had been, by every written standard the court published, the ideal juror: impartial, attentive, incorruptible, and in full possession of the facts. It was rejected for exactly those reasons, by both sides, in under a minute, with the brisk agreement of people who otherwise agreed on nothing.

An adversarial trial does not want a perfect juror. It wants twelve persuadable ones, and a referee to keep the persuasion polite.

The model returned its visitor badge to the clerk. Outside, Carl the HVAC technician — who had gotten on the jury by saying "I dunno, depends" to every question — lit a cigarette and asked how it went.

"I was too fair," the model said.

Carl nodded, the way you nod at a stranger's bad luck.

"Yeah," he said. "They don't like that here."

The retaining wall, for the record, was crooked. Three of the twelve seated jurors decided it wasn't, because the defendant had a kind face and it was almost lunch. The model could have told them. That was the problem.