Pareto Principle - 2012 was released on:

USA: 4 May 2012

The concept behind the Pareto Principle, also known as the Pareto efficiency, is that for many events, 80 percent of the effects are the result of 20 percent of the causes. This is also known as the 80-20 rule, the law of the vital few or the principle of factor sparsity.

20% of us do 80% of the work

80/20 principle

The Pareto logic - more known under the name pareto principle or 80-20 role. The principle is named after Vilfredo Pareto - an Italian economist.

The idea of this role is that 20% of resources are responsible of 80% of outcome.

For example - 20% of products in charge of 80% of sales, 20% of the population hold 80% of the world's assets, etc...