SYSE.21:4.1 - Pattern-Use Unfolding

The eight moves distinguish assessment, a current choice and selected later Work. They do not require an intervention or later study after a sufficient current result. Variant generation, transmission, enactment, selection, intervention and observation can overlap or occur through different Agents.

1. Practice boundary. The Agent names the engineering profile, project or organization, place, period, practitioner population, the project system-of-interest when one is designated or another decision-relevant world-side subject, affected Systems, and receiving decision. A U.Discipline is named only when a compatible C.20 result is available.
2. Enacted variant. From representative Work, identify the performing Agents, enacted Methods, subject configuration, results, and evidence window. A compatible SYSE.20 account can supply the local Method-and- Work architecture and one project variant observation.
3. Cultural claims. For each claim needed by the decision—for example generation, transmission, receiving enactment, recognition, cultural selection, memory, retention, or loss—the Agent states the variant, participants, relation, population, period, evidence, and uncertainty. Missing links remain gaps.
4. Decision and authority. For a project choice, identify the deciding Agent, assignment when attribution matters, decision Method, direct authority and permitted practice-change scope. A factual account grants no authority and need not create a change request.
5. Continuation alternatives. For the current choice, keep credible options that differ through a Method or another decision-bearing relation, including the feasible incumbent where available. Retain, change, branch and stop or revert receive concrete content; do not invent a fixed number of alternatives or causal explanations to finish a supported continuation.
6. Engineering comparison. Alternatives are compared on the engineering consequences that matter to this use. Evidence may include, for example, direct observations, small cases, qualified expert estimates, self-reports, institutional descriptions, or publication-visibility measures; each keeps its epistemic status.
7. Choice and selected intervention. Use C.11 or a domain decision Method for the formed choice. Return the supported option, accepted losses, fallback and relevant reopen conditions. Use C.11.DUA to appraise a questionable inquiry demand before committing to its design or execution. A probe or implementation request is included only when selected for a useful attainable contribution; a recommendation can finish as a proposal, while performed intervention Work needs its own evidence.
8. Observation and feedback. Use compatible observations for the cultural and engineering claims actually made. Select additional observation only when worthwhile and obtainable for the receiving use; an unavailable later observation withholds its dependent claim, not an independently supported current result. Reopen SYSE.15 only when compatible feedback crosses a repertoire limit. Supply HCD.1 only for a real human capability demand with recoverable holders, representative Work, capability need and evidence.