The ultimate objective is to achieve a statement of the “top-level” problem first in human terms and then, consistently, in mathematical terms and to show that the mathematical problem has a solution in the real world. The statement of the customer’s problem ought to be comprehensive, complete, consistent, and precise. Such a problem statement can only rarely be achieved by one systems engineer working alone with the customer or even by a group of systems engineers. Almost always a comprehensive, complete, consistent and precise statement of the problem of the design of a system can be
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