Observed arrival · 2026-10-13
Why keep a promise that no longer pays?
An interactive, chaptered story uses game-theory choices to examine promises, then connects the question to Vanberg’s 2008 experiment and the author’s research.
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ƒJS
- For
- Readers exploring promises and game theory
- Worth noticing
- Its notebook links Vanberg’s 2008 experiment, cell-by-cell data, a working paper, and a TypeScript simulation engine.
Field notes
The story moves through game-theory scenarios as a sequence of reader choices, including a payoff matrix, pre-play messages, and a dice roll. Its notebook describes Vanberg’s 2008 experiment and says it recounts every cell of the data; the page also links to a working paper, a GitHub code repository, and a Zenodo DOI. The author says the simulation engine was built in TypeScript.
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○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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