Originally, the Pareto Principle referred to the observation that 80% of Italy’s wealth belonged to only 20% of the population. Further deviations are:
- 20% of the input creates 80% of the result
- 20% of the workers produce 80% of the result
- 20% of the customers create 80% of the revenue
- 20% of the bugs cause 80% of the crashes
- 20% of the features cause 80% of the usage
- And on and on…
But be careful when using this idea! First, there’s a common misconception that the numbers 20 and 80 must add to 100 — they don’t! Ha, to much things wont work if only 8/10 is done…
Anyway, it remains an interesting thought or (un)convenient observation, doesn’t it?
PS: Vilfredo Federico Damaso Pareto (IPA: [vil’fre:do pa’re:to]; July 15, 1848 – August 19, 1923), born Wilfried Fritz Pareto, was an Italian industrialist, sociologist, economist, and philosopher.
PPS: 10/90 gap refers to the statistical finding of the Global Forum for Health Research that only ten per cent of worldwide expenditure on health research and development is devoted to the problems that primarily affect the poorest 90 per cent of the world’s population. The Global Forum for Health Research is located in Geneva.