Roughly 80% of the outputs come from 20% of the inputs. This applies to many events observed in the world of economy, biology, computing, sport and many other areas.
- Sometimes when my kitchen becomes a mess and I don’t have 20 min for a comprehensive clean-up I am doing a 2 min cleanup. It is incredible how much one can achieve in two minutes and later on the task of finishing the cleanup doesn’t seem that big.
It means you often can identify 20% of work that will bring you 80% of outcomes. Often to get to from 80% to 100% of outcomes requires 80% of effort.
Other names: Pareto principle (see Pareto Principle on Wikipedia)