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Thus, the top-management approach has these essential characteristics: 1. We make an overall diagnosis before we decide on the specific problems to be solved. 2. We determine the order in which problems should be solved. We try to persuade the client to let us put first things first. 3. In the solution of problems, we take an integrating approach and recognize that: (a) external factors are usually important in the solution of internal problems; (b) very few problems can be solved in any single department or section of the business or government agency.36
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Elizabeth Haas Edersheim (McKinsey's Marvin Bower: Vision, Leadership, and the Creation of Management Consulting)