The Pareto principle states that, for many events, roughly 80% of the effects come from 20% of the causes. Takeaways Inputs and outputs are often not evenly distributed. A large group may contain only a few meaningful contributors to the desired outcome. Focus the majority of effort on the areas that will bring the largest benefits to the most users. Origins Its origins stem back to Vilfredo Pareto, an economist who noticed 80% of Italy’s land was owned by 20% of the population.
