The grandfather kept his receipts in a tin shaped like a fish. Each one
was the proof of an hour: a streetcar ticket, a bowl of udon, a cigarette he
bought for a friend. When he died the tin was still half-full, and we could
not read most of the inks. Thermal paper, it turns out, is a tax on memory.
The text fades in proportion to the heat of the rooms it has lived through.
What is the cost of a moment that no one remembers? Less than nothing —
a small subtraction from the world. What is the cost of a moment that one
person remembers? More than the moment itself; it now contains the cost of
its own storage, the rent of the brain, the interest accrued by every
return visit.
— and so the tin grows lighter, even unopened.