Vilfredo de Pareto was an Italian sociologist and economist who, during his studies, realized that, in general, 80% of a nation’s income was in the hands of only 20% of the population.
Pareto defined a rule, known as the Pareto 80/20 rule, which he summarized as follows:
A high percentage of effects in any large system are caused by a low percentage of variables.
The 80/20 rule states that a small proportion of causes (20%) drives a disproportionately large proportion of results (80%). A few examples of 80/20 rules include:
- 80 percent of a product’s usage involves 20 percent of its features.
- 80 percent of a town’s traffic is on 20 percent of its roads.
- 80 percent of a company’s revenue comes from 20 percent of its products.
- 80 percent of innovation comes from 20 percent of the people.
- 80 percent of progress comes from 20 percent of the effort.
- 80 percent of errors are caused by 20 percent of the components.
This rule can help us in our business or in creating user experience design. It works in our day-to-day life. A phrase reminiscent of Pareto’s law was enunciated by the 34th American President, Dwight D. Eisenhower:
“What is important is rarely urgent, what is urgent is rarely important.”
Causality
We can implement the 80/20 rule in almost anything. It guides you to focus on the important things. Elements in a design have varying levels of significance, and designers should recognize and prioritize them accordingly. Use the 80/20 rule to assess the value of elements, target areas of redesign and optimization, and focus resources in an efficient manner.
Designers should minimize or remove noncritical functions that make up the less-important 80 percent altogether. Prioritize the vital 20 percent and refrain from over-optimizing the less critical 80 percent when resources are scarce. Generally, apply the 80/20 rule only to variables in a system that many small and unrelated effects influence.
you can read more about these rules in the Universal Principles of Design Book I will encourage you to read this book it will shape you to build robust design.
Thank you for reading.
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