“Vélez is playing Defensa. The probability just dropped to 31% even though the score is 0-0.”

Diego didn’t ask how he knew.

“Meaning of what?”

That was the night Diego stopped sleeping. He built a second phone—a burner—to run two instances of the app simultaneously. Sometimes they disagreed. When that happened, he’d sit motionless for hours, waiting for one number to surrender to the other. Lucia left on a Tuesday. He didn’t notice until Thursday, when he reached for her side of the bed to ask if she’d seen his charger.

He hasn’t been seen since.

“You’re shaking,” she said.

He picked up the paper.