The Spool Room

The rain came down so hard the bus didn't come, so Soren sat in the back room of his aunt's yarn shop and tried to fix a knot.

It was a skein of dark green wool that had collapsed in on itself. Somewhere inside there was one loose end and one tight center, and the center was so wound up that no thread could move past it.

"Leave the tight part," Aunt Priya said. She was sorting spools into a wooden tray. "You can't read a tight part. Find the loose loops first."

Soren wrote that down. He had a notebook, and most people thought that was strange for someone his age, but the inside of his head felt too small for a sentence like you can't read a tight part.

"Read it how?" he asked.

"With your fingers. Pull where it gives." She held up two spools. "Same yarn, these two. Same dye lot. But this one's wound loose and this one's wound tight. The tight one, I can't even start the loose end. It's all there. I just can't get to it."

Same yarn. Soren turned that over. Both spools held the identical thread. The only difference was how hard it was wrapped.

He looked back at his skein. The loose loops near the outside slid apart easily when he pulled. The wound center stayed locked, every strand pressed against its neighbors so nothing could lift free.

"So the yarn's the same," he said slowly, "but whether you can use it depends only on the wrapping."

"That's the whole trade," Priya said. "Half my job is wrapping. The yarn never changes."

Soren stopped pulling.

He was thinking about a thing his science teacher had said and then moved past too fast, the way teachers do. That every cell in his body had the same DNA. The cell in his eye and the cell in his thumb and the cell in his liver, all carrying the exact same instructions. He had written it down and underlined it and it had bothered him for a week.

Because if they all had the same instructions, why was an eye not a thumb?

He looked at the two spools. Same dye lot. Same thread. One you could read, one you couldn't.

"Aunt Priya," he said. "What does the tight spool look like up close? The thread."

"Wrapped around the core. Around and around the little cardboard tube in the middle."

A core. The thread wound around something solid, again and again.

Soren felt the back of his neck go cold and bright at the same time.

DNA was a thread. He knew that much. A long, long thread, kilometers of it crammed into something too small to see. It couldn't just float loose. It had to be wound. It had to be wound around something.

And if it was wound around little cores, then some of it would be wrapped loose and some wound tight, exactly like the spools. The loose parts, your fingers could get into. The tight parts, locked, every strand pressed flat, no loose end to start from.

"That's it," he said out loud.

"That's what?"

"The eye and the thumb." He was talking fast now, the way he didn't usually. "They have the same thread. The same instructions, all of them, the whole skein. But in an eye cell, the eye part is wound loose so the cell can read it. And the thumb part is wound up so tight the cell can't get a finger in. Same yarn. Different wrapping."

Priya set down her spools. "You lost me somewhere around eyes."

"It's not which instructions you have," Soren said. "Everybody's cells have all of them. It's which ones are wound loose enough to read."

He looked down at the green skein in his hands. The loose outer loops. The locked center. He had been treating the locked center as a problem. But it wasn't broken. It was wound tight on purpose, the way a spool was wound tight on purpose, so that nothing would unravel that wasn't supposed to.

His own cells were doing this. Right now. In his fingers holding the wool, there were threads wound tight over tiny cores so that the eye instructions stayed locked away, never read, never started, while the skin instructions sat loose and open and busy.

Something inside him had been wound and something had been left loose, and that, not the instructions, was the reason he had hands at the ends of his arms and not eyes.

"Can it change?" he asked. "The wrapping. Can a tight part get loosened later?"

Priya picked up the tight spool and pressed her thumbnail into the wound thread, working at it. After a moment a single loop lifted free.

"With work," she said. "You can always loosen a wrap. That's not the yarn changing. That's just somebody deciding to open it."

Somebody deciding to open it. Soren wrote that down so hard the pen nearly went through the page.

Because if the wrapping could change, then the locked parts of him were not locked forever. They were just closed. And things that are closed are a different kind of thing from things that are gone. The same instructions everyone was born with. Just waiting on the wrapping.

"The bus is here," Priya said, looking past him at the window. The rain had thinned to a gray drizzle. "You fixed your knot?"

Soren looked down. He hadn't fixed the knot. He had only found the one loose end.

He pulled it, gently, where it gave. The outer loops fell open in his hands, and the tight green center began, slowly, to turn.