Secondary decisions are those choices made by the analyst that determine the way in which
systems analysis of a given problem or issue will be performed. They include making the simplifying assumptions by which a complex issue will be made tractable in analysis, choosing the forms of
models, selecting the techniques of computation and
simulation, deciding what data have to be acquired, judging what support by experts of various disciplines to use in performing the analysis, and so on. The secondary decisions are distinguished from PRIMARY
decisions, that is, the decisions to be taken by the
decision maker and related to the object problem or issue to which a systems analysis is applied. (IIASA)
