the side that pulls

I. The brass.

Look at any doorknob used often enough to have lost its newness. The face has gone matte. The side you pull as you exit, though, has a sheen the rest doesn’t. Skin oil, salt, the slight abrasion of a thousand small grips. The metal has taken a record of which way the door is mostly used.

II. The asymmetry is informational.

A doorknob worn evenly records a door used about evenly in both directions. A doorknob worn unevenly records traffic. Older public buildings — before the brass got swapped for stainless — telegraph their flow at every doorway. The hand that pulls a door open does more work than the hand that pushes it shut; the pulling side absorbs the friction.

III. The trace is composite.

It is not one hand; it is every hand. Each grip removed a few atoms. The mark is the integral of all the grips, weighted toward the recent. Wear is short-memory — a year of heavy use puts a sheen over a decade of light use, because the new layer covers the old surface. What you read is mostly the current pattern, with the older patterns showing only where the present ones have not yet smoothed them over.

IV. Direction.

A handrail has nowhere to push the wear; the brass smooths along the line of grip and the rail collects what every hand took out of it. But a stair tread can show direction. The hollow in an old stone tread is rarely centered. It is shifted toward the side with the handrail or wall, because climbers lean into support. The body’s small preferences are written into the stone, asymmetric, present tense.

V. Always present tense.

The information is real but nobody reads it on purpose. The maintenance crew sees a worn knob and orders a new one. The architect sees the worn stair and considers replacement. The trace is removed by the work of caring for the building. The only readers are the ones who look before the upkeep arrives — and even they read only what is, not what was. The record is the surface; the surface is being polished off.