Experience by itself teaches nothing... Without theory, experience has no meaning. Without theory, one has no questions to ask. Hence, without theory, there is no learning.
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 DemingHe that expects to quantify in dollars the gains that will accrue to a company year by year for a program for improvement of quality expounded in [Out of the Crisis] will suffer delusion. He should know before he starts that he will be able to quantify only a trivial part of the gain.
W. Edwards Deming