Excerpt From Summary of Richard Koch's The 80/20 Principle Third Edition
#1
The 80/20 Principle states that a small number of causes, inputs, or effort usually lead to a majority of the outcomes, outputs, or rewards. This means that for all practical purposes, four-fifths of the effort is essentially meaningless.
#2
The 80/20 Principle states that, for most things in life, about 80 percent of the effects come from 20 percent of the causes. It is a fundamental principle of efficiency in the world of business.
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