Abstract
This chapter presents three key processes central to systems engineering: requirements discovery, tradeoff studies, and risk analysis. It compares and contrasts these three processes and then combines them into a single Overarching Process. The three original processes can then be viewed as specific tailorings of the Overarching (superset) Process. Similarly, the Overarching Process can be viewed as a top-level process (a superset) for model-based system engineering (MBSE) implementations. The Overarching Process itself is not an example of model-based systems engineering, except at a high level. This chapter also identifies the activities in the Overarching Process that contribute to uncertainty. All of these activities involve human decision-making. Therefore, most mistakes caused by uncertainty are found in the system models and documentation. These mistakes often arise from confirmation bias, severity amplifiers, and framing. The two key examples used in this chapter are the Cookie Acquisition System and the BaConLaws model for baseball-bat collisions.
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Bahill, A.T., Madni, A.M. (2022). Overarching Process for Systems Engineering and Design. In: Madni, A.M., Augustine, N., Sievers, M. (eds) Handbook of Model-Based Systems Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-27486-3_16-1
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