The Half That Came Back

The corridor smelled like lemon cleaner over something older. Soren sat on a bench bolted to the wall and counted the ceiling tiles because his mother had said counting was better than worrying, and he did not entirely believe her, but he was doing it anyway.

Thirty-one tiles to the double doors. Behind the doors, his uncle Petr was asleep with a line of staples down his belly.

A nurse came out with a clipboard. Her badge said Ama, and she had the tired, kind look of someone at the end of a long shift.

"You're the nephew," she said. "He asked about you before he went under. Said you'd have questions."

"They took part of his liver," Soren said. "For the lady in room nine."

"Sixty percent, roughly."

Soren pulled his notebook out of his jacket. He turned to a clean page and held his pen above it without writing yet.

"Sixty percent," he said. "So he has forty percent of a liver now."

"For now."

"That doesn't sound like enough." He was thinking about a car with sixty percent of its engine gone. About a book with sixty percent of the pages torn out. "How does a person live on forty percent of an organ?"

Ama leaned against the wall. "You know what the liver does?"

"Cleans blood."

"That's one thing. It does more than five hundred things. It builds the stuff that clots your blood so you don't bleed out from a paper cut. It stores sugar and hands it back when you need it. It takes the poison out of things and packs the leftovers away. It makes the fluid that helps you digest fat. Five hundred jobs, give or take, all happening at once, all the time, in the dark, without you asking."

Soren wrote the number five hundred. Then he stopped, because the next part did not fit.

"If it does five hundred things," he said slowly, "and you take away most of it, shouldn't the five hundred things break?"

"That's the good question," Ama said. "That's the one your uncle said you'd get to."

She was not going to answer it. Soren could tell. She had the look of a person who wanted him to arrive somewhere himself.

He looked at the double doors. Forty percent, awake, doing five hundred things with less than half the tools.

"It grows back," he said.

Ama smiled but did not confirm it.

Soren kept going, out loud, because the inside of his head had gotten crowded. "A cut on your arm grows back skin. But that's just skin, the same skin. This is different. He's missing a piece of the whole thing. The blood vessels. The tubes. All five hundred jobs." He pressed the pen harder. "You can't just grow a wall back. You'd have to grow the whole factory back. The right size. And then know when to stop."

"His will be close to full size in a couple of weeks," Ama said. "Most of the way there. The woman in room nine, the piece he gave her, that grows too. Two livers, out of one and a half."

Soren stared at her.

"The piece he gave away is growing into a whole liver inside someone else," he said.

"Yes."

"And his is growing back to fill the space where that piece used to be."

"Yes."

Soren sat very still. He was thinking about the word whole, and how he had used it wrong his entire life. He had thought whole meant all the pieces present. But his uncle was down to forty percent and still whole, still Petr, still going to wake up and make bad jokes and every one of those five hundred jobs was still running in the dark with pieces missing.

"How does it know?" he asked. "How does it know how big it's supposed to be? If you take sixty percent it grows back sixty percent. It doesn't keep going and make a liver too big. It stops at the right size." He looked up. "Something is counting. Something in there is measuring itself."

Ama opened her mouth, and then closed it.

"We don't fully know," she said. "That part. How it knows when to stop. There are ideas. Signals in the blood, pressure, chemicals that say enough. But if you're asking me exactly how the liver measures itself and knows it's finished, I'd be making it up."

Soren wrote the word ENOUGH and put a question mark after it, and looked at it.

Here was a thing inside every person he had ever met. A thing that could lose most of itself and rebuild, that could be halved and given away and become two, that ran five hundred jobs without being asked. And it knew how to stop growing at exactly the right size, and nobody, not Ama, not the surgeons behind the doors, not the textbooks, could say precisely how it knew.

He had thought the mysteries were all far away. In space, at the bottom of the ocean. He had not known there was one folded up under his uncle's ribs. Under his own ribs. Doing it right now, this second, while he sat on a bolted bench counting tiles.

"It's doing it in me too," he said. "Right now."

"Right now," Ama said. "All five hundred. You never once told it to."

Soren put his hand flat against the side of his own stomach, low, under the ribs, where he had never once thought to pay attention.

The double doors swung open. An orderly wheeled a cart through, and for a moment Soren could see down the far hall, all the closed doors, room after room, and behind every one a person, and inside every person the same quiet impossible thing, halving and doubling and measuring itself and stopping at exactly enough.

He kept his hand where it was and did not write anything down, because his hand was busy feeling something he had never bothered to feel before.