For grown-ups
ErrataQuest is about how science changes its mind. Each room shows an idea that sensible people held, why it made sense, and three observations. The learner picks the one the idea could not explain.
Every room links to a source. Wrong ideas are shown with respect: the point is that good thinkers were wrong for good reasons, and that evidence moved them.
Nothing is stored or sent.
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.