Spark & Anvil Privacy

For grown-ups

PatchNotes is a model of running a small online game, built to teach two ideas that matter well beyond games. The first is Simpson's paradox: the overall table says one character wins more, but split by skill bracket it wins less in every bracket, because experts pick it most. The second is Goodhart's law, usually quoted in the anthropologist Marilyn Strathern's 1997 words: “When a measure becomes a target, it ceases to be a good measure.” (Charles Goodhart's 1975 version was about monetary statistics.) In the model, players meet across skill brackets and every game has one winner, so the two characters' wins always add up.

Each week your teenager reads a dashboard, makes one balance change, may pull a "dark lever" (a streak, a countdown timer, quietly tilted odds) that lifts this week's number and costs trust, and writes a patch note in their own words. The note stays on the page; it is never stored or sent.

At the end a debrief explains what happened in plain words and compares the season with one where nothing was changed. The numbers are made up; the traps are real.

A good conversation starter: which numbers at school, at work or online are targets that may have stopped measuring the thing they were meant to?

What it never does

  • No accounts, no ads, no tracking — anything kept stays on this device.
  • No streaks, timers to beat, points to chase or leaderboards.
  • No chat, and nothing anyone types is sent anywhere.

We describe what PatchNotes is designed to practise. We do not claim it raises test scores.

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