Cognitive Scaffold

Preparing your thinking workspace

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MENTAL MODEL · M12721

Zero-One Law

Zero-One Law
DecideHigh supportDecision Science
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Version 1.0.0 · Updated 2026-07-28

CORE DEFINITION

The Zero-One Law is a theorem in probability theory. It was discovered by Andrey Kolmogorov, so it is sometimes called Kolmogorov's Zero-One Law. Its content is: the probability of a tail event can only be one (almost surely occurs) or zero (almost surely does not occur). Tail events are defined by an infinite sequence of random variables. Suppose X1, X2, X3, ... are infinitely many independent random variables (not necessarily identically distributed). Let F be the sigma-algebra generated by Xi.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

The Zero-One Law is a theorem in probability theory. It was discovered by Andrey Kolmogorov, so it is sometimes called Kolmogorov's Zero-One Law. Its content is: the probability of a tail event can only be one (almost surely occurs) or zero (almost surely does not occur). Tail events are defined by an infinite sequence of random variables. Suppose X1, X2, X3, ... are infinitely many independent random variables (not necessarily identically distributed).

anchor

Anchor fast decisions

A task only takes 0 (not done) or 1 (done and releasable); "half done" is mathematically equivalent to 0, thus eliminating ambiguous progress.

MINIMUM ACTION

In progress 0/4

Practice this model in one real situation:

Check to track your progress (stored locally)
Learning progress0%
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Source support: Explicit

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    zh.wikipedia.orghttps://zh.wikipedia.org/wiki/%E9%9B%B6%E4%B8%80%E5%BE%8BZH · Explicit
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