GETTING 80% OF REQUIRED TESTING DONE IS RELATIVELY EASY. SO WHY DOES THE LAST 20% TAKE SO MUCH EFFORT, TIME AND MONEY?
The Pareto Principle, named after Italian economist Vilfredo Pareto, originally referred to the observation that 80% of Italy’s wealth belonged to only 20% of the population. More generally, this principle serves as a reminder that the relationship between inputs and outputs is not balanced. The Pareto Principle is also known as the 80/20 Rule.
In economics terms, there is diminishing marginal benefit. This is related to the law of diminishing returns: each additional hour of effort, each extra worker is adding less “oomph” to the final result. By the end, you are spending lots of time on the minor details.