The Chore Roster Problem

There is a whiteboard in every share house in this country and it works for about three weeks. Understanding why it stops working is most of the way to fixing it.

It fails on memory, not on effort

Nobody is dodging the bins on purpose. The roster is on a wall that people walk past without reading, and the person whose turn it is genuinely does not know it is their turn. It is an information problem dressed up as a character problem.

Then it fails on arithmetic

Somebody covers for somebody. Somebody else buys the milk twice. Two weeks later nobody can reconstruct who is up and who is owed, so the honest thing is to drop it and the resentful thing is to remember it silently. Most houses do the second one.

What a shared space changes

The roster rotates on its own, so whose turn it is has an answer that nobody has to remember. Bills are tracked as they happen, so who owes what is a fact rather than a negotiation. And because there is a character in the space who can see both, somebody can just ask instead of raising it at dinner.

The part that surprised me

The thing people actually wanted was not the roster. It was not having to be the one who brings it up. Once the space says it, nobody has to.