The girl who sat next to him in chemistry kept a list of things she was sure about. He saw it once when her notebook fell open: tides, bread dough, her sister's middle name. The list was short.
He asked her about it after class. She said she'd started it the year her parents split up, when everything felt provisional. Three items and a lot of white space.
By spring the list hadn't grown. She said that was the point. Most things don't survive checking. The ones that do aren't the ones you'd guess.
He started his own list. Put down: water freezes at zero degrees. Crossed it out. Put down: water freezes at zero degrees given certain conditions. Crossed that out too. The conditions kept multiplying.
What he wanted to say was that the list reminded him of the crystal they grew in lab — how you had to hold the solution just below saturation and wait. Too much and nothing happens. Too little and nothing happens. The crystal needs the interval, the held breath between too much and not enough. And when it finally forms, the shape isn't a choice. It's what the lattice allows.
She graduated. He didn't get her number. Years later, stirring sugar into coffee, he thought about supersaturation — how the spoon itself could be the seed, how the whole cup was waiting for something to organize around. He set the spoon on the counter and watched the coffee settle.
His own list, by then, had one item. It wasn't about water.