8020sääntö
8020sääntö, also known as the Pareto principle or the law of the vital few, is an observation that roughly 80% of effects come from 20% of causes. This principle was first articulated by Italian economist Vilfredo Pareto in 1906, who observed that approximately 80% of the land in Italy was owned by 20% of the population.
The 8020sääntö is not a strict mathematical law but rather a common rule of thumb that applies
Understanding the 8020sääntö can be beneficial for prioritizing efforts and resources. By identifying the critical 20%