SYSE.9:10 - Rationale

Whole-System decisions depend on results from unlike professional practices. The FPF distinctions between local system-role kinds, assignment, capability, Method, Work, production, evidence, deontic relations, and decisions help engineers establish how each result was obtained and how it may be used.

Engineers begin with the integrating decision, use available support, select worthwhile further acquisition, preserve each specialist Method and authority boundary, and make the useful answer or blocker available. Using the results together does not merge the contributing practices into one discipline.

Professional culture and project Work remain different structures. A discipline may vary, select, and retain new Methods over years. A project may select one of those Methods for intended use before it is enacted. Claim actual project use only after capable Agents perform dated Work under the needed enabling arrangements and enact the Method; accepted results and later evidence separately support continued use.