I should estimate that in my experience most troubles and most possibilities for improvement add up to the proportions something like this: 94% belongs to the system responsibility of management 6% special
W. Edwards DemingFailure of management to plan for the future and to foresee problems has brought about waste of manpower, of materials, of the machine-time, of all which raise the manufacturer's cost and price that the purchaser must pay
W. Edwards Deming