Base120 · Decomposition

Pareto Decomposition (80/20)

DE · Decomposition

Identify vital few drivers producing most impact versus trivial many

Model code
DE7
Transformation
DE (Decomposition) — Break problems into factors, layers, and independent subproblems.
Priority
7 of 20
Framework
HUMMBL Base120 — 120 mental models across 6 transformations

When to use

"Use when resources are limited and outcomes are unevenly distributed. Identify the vital few drivers that produce most of the effect, and focus resources there rather than spreading evenly."

Example

"In many codebases, 20% of modules contain 80% of bugs. Focusing testing and refactoring on those modules produces more reliability improvement than spreading effort across all modules equally."

Common misuse

"Assuming the 80/20 split is exactly 80/20. The actual ratio varies — it might be 70/30 or 90/10. The principle is that distributions are uneven; the exact ratio must be measured."

Also known as

80/20 RulePareto PrincipleVital Few

Related models

DE2DE5P14