Pareto's Principle, also known as the 80/20 rule, is a concept that approximately 80% of the effects or outcomes result from 20% of the causes or inputs. In other words, a small portion of the factors or efforts often contributes to the majority of the results.

Inversion involves looking at a problem or situation from the opposite perspective or considering the reverse of the desired outcome. Instead of focusing on how to achieve a particular goal, inversion prompts you to think about how to avoid or prevent the unwanted outcome.