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David's Time With Peter F. Drucker 2020.2.10 A great many of these organizations will, of course, be business. And a great many of the individual knowledge workers affected by these challenges will be employees of business or working with business. Yet this is a MANAGEMENT book rather than a BUSINESS management book.The challenges it presents affect ALL organizations of today’s society. In fact, some of them will affect nonbusinesses even more, if only because a good many nonbusiness organizations-the university, for instance, or the hospital, let alone the government agency-are more rigid and less flexible than businesses are, and far more deeply rooted in the concepts, the assumptions, the policies of yesterday or even, as are universities, in the assumptions of the day before yesterday(i. e., of the 19th century).——《Management Challenges for the 21st Century·Introduction》(Peter F.Drucker,1999)