A.15.9:10 - Rationale and SoTA use

The best-known current line for this problem is result-first and use-bounded: define what the receiving decision needs, reuse a qualified result when possible, retain a useful narrower answer, select worthwhile obtainable acquisition, and preserve the supplier’s Method and authority separately from the receiver’s decision. Current SYSE.9 demonstrates the bounded-request, specialist-Method, authority-split, and receiving-use parts of this move in engineering, while C.11.DUA governs acquisition value and feasibility; the unlike administration, finance, and governance cases show that the boundary transfers while their domain content does not.

This pattern does not select a professional standard, role framework, maturity model, organization chart, or review regime because it is official, new, popular, or widely taught. Such sources matter only when a distinction they supply changes the nine-step move, one direct domain result, or its limits. A source with institutional authority can still be obsolete for the live problem; a less famous source can be stronger when it identifies and repairs the older line’s failure.

A.10 already owns evidence, provenance, currentness, and bounded reliance, while RESULT-TO-NEXT-MOVE already routes an obtained result to the downstream question that is current. Repeating either Method here would create a shadow specification. A.15.9 contributes only the cross-practice receiving-decision boundary, the existing-result stop, the bounded request after acquisition is selected, the supplier/receiver authority split, and local reopen.