Cognitive Scaffold

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MENTAL MODEL · M4685

Inverse Gambler's Fallacy

Inverse Gambler's Fallacy
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

If you walk into a casino and see someone just rolled a double six, you tend to assume that he has rolled the dice many times (and just happened to get a double six). But in reality, whether it's his first roll or his thousandth, the probability of rolling a double six is the same. We mistakenly think that a low-probability event must be the result of a long series of attempts.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Be wary of over-inferring history. Seeing a startup succeed (a low-probability event), we tend to assume it must have gone through many hardships and attempts. But in reality, it might just be lucky and hit the double six on the first try. Don't fabricate a heavy history for accidental success.

anchor

Anchor fast decisions

The inverse error of the gambler's fallacy: seeing a rare outcome, one assumes it has been repeated many times before (e.g., seeing a double six and assuming the dice have been rolled for a long time).

MINIMUM ACTION

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Source support: Explicit

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    en.wikipedia.orghttps://en.wikipedia.org/wiki/Inverse_gambler%27s_fallacyZH · Explicit
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