As the size and complexity of a company change in the course of its evolution it experiences predictable stages of growth. During these stages, a company discovers that what worked in the past no longer works. At such times, managers have to juggle the three variables of organizational evolution--the firm's purpose, its business and management processes, and its human resource issues--and keep them in balance as they reinvent new ways of structuring the firm. Typically, tension develops as one variable is stressed at the expense of the others. Managers need to know how to delegate decision...