Pareto principle. 80/20 law. 80% of x is caused by 20% of y. . 80% of the sales come from 20% of the salespeople. 80% of the music played comes from 20% of

Pareto principle. 80/20 law. 80% of x is caused by 20% of y. . 80% of the sales come from 20% of the salespeople. 80% of the music played comes from 20% of the composers. 80% of the crime is commited by 20% of the people. . And not only that, out of those 20%, the 80/20 law still applies. of the 20% of the people who commit crimes, 80% of those crimes are commited by 20% of the people. And of those 20%, 80% of those are caused by 20% of them. Same with wealth, music, whatever. That's why, no matter what, most of the wealth will always be owned by a very small number of people. You can take all the money away from the wealthiest people, and in 50 years, the top 20% will own 80% of the wealth again. It will be a different 20%, but still, 20% will own 80% the wealth again. It's also if you have a company with employees, 20% of the employees do 80% of the work. So you do NOT want to lose those 20% of the employees who do most of the work.