When their salary depends on not understanding it A Quote by Upton Sinclair It is difficult to get people to understand something, when their salary depends on not understanding it. understandingwork
The Pareto principle The Pareto principle (also known as the 80/20 rule, the law of the vital few, or the principle of factor sparsity) states that, for many events, roughly 80% of the effects come from 20% of the causes. Wikipedia en.wikipedia.org 80/20 is the new Half-Ass