She argued with Nico in the light of his notebook. "What does forgetting someone do for the rest of the world?" she demanded. "If he forgets, will he make worse choices, thinking no past keeps him accountable?"

"It asks what it needs," Eva replied. "The Blume is old in the way of weather. It is patient as tides. It chooses thus, and those who inherit it must pay attention."

Kama learned to measure weight in emotion as much as in objects. She learned that the Blume's ledger worked in convoluted math: a returned photograph might mean another person's loss, a bloom might ferry memory where forgetting had been paid. She and Nico kept a list—an ethics of sorts, written in his cramped handwriting—of trades that should be refused, of those that might cause harm if misaligned. They became, in the building and beyond, a kind of council: people came with things they could not hold and asked for the plant's intervention. Sometimes the Blume obliged; sometimes it did not.