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6.3.1 Decision Oriented Systems Engineering (DOSE)1 – A Structured, Systematic Approach to Function Allocation

Perhaps the most important reason Systems Engineering exists as a discipline lies in the observation that complex systems cannot be treated merely as an assemblage of so many building blocks. Systems Engineering employs techniques and practices that attempt to consider the whole throughout the design process. Systems Engineering offers quite an assortment of processes, and tools devices to capture, describe, derive, and otherwise characterize various aspects of systems under design or analysis. There are many evolving Systems Engineering processes and practices, including processes in which the object‐oriented paradigm dominates. Unfortunately, the set of available processes, models, and tools remains weakest where they are needed the most: where decision tradeoffs are most negotiable, where “requirements” are not yet firmly established, where the use of legacy systems can have the greatest impact, and where the (projected) life cycle impacts of such decisions are greatest.