Pareto principle

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Notion

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Science and technology

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What Wikipedia says

The Pareto principle (also known as the 80:20 rule, the law of the vital few and the principle of factor sparsity) states that, for many outcomes, roughly 80% of consequences come from 20% of causes (the "vital few").

Excerpt from the Wikipedia article “Pareto principle”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Belbury, CC BY 4.0, via Wikimedia Commons.