No one would want a steady diet of it, but every now and then it's not bad to reflect on weighty matters such as this question: What is really at the core of the business and what are we actually doing? For instance, suppose you're in the telephone business: Should the core business be considered the stringing of wires along poles, or should the activity be premised on providing services that make possible personal communication by voice? Then, suppose you're in the periodical publishing ...

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