Preface

The chief executive officer (CEO) of X2X, Inc. moved uneasily in his chair. He had just been informed that the company’s newly developed phone had not passed its acceptance testing. Clients who had tried out the new model had complained that the device emitted heat. The research and development (R&D) vice president (VP) updated him that they had found a design flaw. The hell with it, thought the CEO. We know what is wrong. We previously had encountered that same problem in our model developed 2 years ago. Then, too, we detected a design flaw; lessons had been learned. How are we back at square one 2 years later? How was a lesson, previously learned, totally ignored, forcing us to learn it once again from scratch?

Confucius, a Chinese ...

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