He shook his head. There was nothing to worry about. Nothing at all. He picked up his pen again and adjusted his glasses, allowing his concentration to blot out all external distractions.

His pen hovered over the paper, and then started to write. Symbols and letters spilled out, each line getting progressively longer than the one before. Then, with a blink and a pair of raised eyebrows, he started whittling away at the expressions, reducing pairs of them to simpler equations or single values.

He’d almost finished, and he felt a rush of cold heat inside. Something was falling out of the mass of complex mathematics, something that he didn’t recognize but which carried the elegance and beauty of true meaning.

He stared at the final line. Now that he was done, he felt growing doubt. Pif would look at it and laugh, then show him where he’d gone wrong. It wasn’t that he was terrible at math, just that he wasn’t as good as she was. She only had to look at an equation to taste its use and quality.

Petrovitch started to work backward, trying to justify each step to himself, testing each part for error, when he was interrupted by a polite knock at the door.

No one ever knocked. No one he knew was emotionally or socially equipped to knock and wait. Doors were to be shoulder-charged and burst through.

He set down his pen and cleared his throat. “Come in?”

It was Hijo who stepped in first. “Petrovitch-san? Is this a convenient time?”

Petrovitch felt the sudden drop in his blood pressure, and its equally sudden surge as his defibrillator compensated. His hands shook and he clamped them flat on his desk to stop their telltale movement.

“Petrovitch-san?” asked Hijo again.

“Convenient for what, precisely?”

“Mister Oshicora would like to talk to you about a matter of some delicacy.”

Petrovitch had no idea what he meant. It didn’t sound good but not only did he have nowhere to run to, he had no way of running. In his current state, he’d get halfway down the corridor before keeling over clutching at his chest.

“I suppose now’s as good a time as any.”

Hijo looked around the room, and took in the closed blinds, the pre-Armageddon paint, the unpleasantly sticky lino, the vague, haphazard attempts to humanize the workspace. He nodded and stepped back outside.

Petrovitch peeled his sweaty palms off the desk top and started to stand. Oshicora came in and closed the door. He smiled and gave his little bow.

“Vsyo govno, krome mochee,” said Petrovitch to himself, closing his eyes.

“Pardon, Petrovitch-san?”