"All profound ideas are timeless. While the details may change, the underlying principles remain the same. Deming’s fundamental ideas came, in part, from his association with Shewhart and his concept of an operational definition... For years I observed managers telling Deming all the good things that they were going to do and heard him respond with one of two questions: 'By what method?' or 'How will you know?' It is just that basic. Until you can answer these two questions, all you have is wishful thinking."
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