An independent number sense lab
Gyesanwang (계산왕, “calculation king”) is made in Korea for curious people everywhere. We turn familiar mistakes about probability and percentages into predictions, experiments and short explanations.
Our simulations are educational models. We separate theory from a random run, explain assumptions and avoid invented population rankings. The games are not intelligence tests.
Start with an untimed experiment or a daily 45-second game. If a result seems wrong, send the page, inputs and expected result to [email protected].
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