Ok, I suppose I should explain the title. The formula represents “Pareto’s Law” of income distribution. The Italian economist Vilfredo Pareto used the formula to show that the distribution of income and wealth follows a logarithmic pattern. In essence, 20% of the people have 80% of a nation’s wealth.
Pareto was one of the leaders of The Lausanne School, a Neoclassical school of thought and a proponent of the General Equilibrium Theory, an attempt to use a “tastes-and-obstacles” structure as opposed to a “demand-and-supply” structure in economics. The structure is also called “The Law of the Unequal Distribution of Results”. So what in the world could the 80/20 formula have to do with Photoshop? Read on. . .