SYSE.4:9 - Consequences

The project gains an early, inexpensive way to expose unsupported reliance. A single claim, challenge, decision question, and affected earlier answer can guide useful Work before a large test programme or assurance case exists. Evidence from models, integration, physical tests, and use can later accumulate without losing its subject, configuration, currentness, or decision boundary.

The cost is explicit separation. Engineers must keep the DPF account, WorkPlan, performed Work, result, descriptive evidence/provenance path, assurance result, specialist verdict, and decision question distinct. This takes more care than one pass/fail status, but shows which answer should change. A claim about the project’s overall benefit needs a basis for that claim; obtaining further evidence remains a decision under §4.2.