to incorporate the total system point of view, • to incorporate the point of view that systems exist to serve human needs, • to incorporate the system life-cycle point of view, • to apply to the design of personnel/machine/software systems in any functional or technological context, • to be independent of but adaptable to any customer, • to be couched in informal and intuitive terms but to constitute the basis for mathematical definitions, • to provide the basis for professional education and activity, and • to clarify the concepts of system design and system analysis and the relationship of
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