final principle. Most production practices follow well-established procedures and, rather than reinventing the wheel repeatedly, use a specific method that has been shown to work before. But managers tend to be inconsistent and bring a welter of approaches to the same task. We should work to change that. As we become more consistent, we should also remember that the value of an administrative procedure is contained not in formal statements but in the real thinking that led to its establishment. This means that even as we try to standardize what we do, we should continue to think critically
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