Managers are for Efficiency, Leaders are for Innovation
...the top down, command and control organization is rapidly becoming a thing of the past. First, it takes too long for commands to filter down through the organization, so the responsiveness of a top down command and control organization is limited, when the environment is changing rapidly. Second, the executives and leaders rotate through jobs and positions like a roulette wheel, in one slot and then on to another slot every two to three years. This lack of longevity in any role doesn't create much stability or desire for long term change. Third, most workers in large organizations have far more training and education than their forebears, and are able to make informed decisions, if they are informed of the goals of the organization.
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