"Deming's Rule" is an aphorism in industrial engineering and management, based on a principle promulgated by engineer and statistician W. Edwards Deming (1900- 1993). His name is sometimes misspelled Demming, and the rule itself is sometimes given incorrectly, as I learned in an online discussion this week.
Basically, Deming's Rule can be stated as, "85% of a worker's effectiveness is determined by the system he/she works within, only 15% by the worker's own skill." It is also often stated as, "85% of the problems/mistakes in the workplace are caused by the management and/or the physical infrastructure, and only 15% are the fault of the workers themselves." It is also sometimes reported as, "85% of faults lie with systems, processes, structures and practices of an organization, and 15% are due to operator/worker skill/error."
Sometimes 95%/5% is quoted rather than 85%/15%.
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