MENTAL MODEL · M3900

Pareto Principle

BusinessHigh supportEconomics

Included

Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

Also known as the 80/20 rule, it states that approximately 80% of results come from 20% of causes, or 80% of value is concentrated in 20% of inputs.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Resource allocation guide. It helps us identify and focus on the key factors that have the greatest impact, optimize resource allocation, and improve efficiency and effectiveness.

anchor

Anchor fast decisions

The Pareto principle (80/20 rule): In many systems, approximately 80% of results come from approximately 20% of causes. It is an empirical generalization of 'unbalanced distribution', reminding us to focus on the vital few.

MINIMUM ACTION

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Practice this model in one real situation:

Identify the few factors that contribute the most (customers, defects, features)
Concentrate resources on the critical 20%
Use it to set priorities rather than as an exact ratio.

Check to track your progress (stored locally)

Learning progress0%

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Source support: Explicit

link
en.wikipedia.orghttps://en.wikipedia.org/wiki/Pareto_principleZH · Explicit
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