Introduction — A prototype is a decision tool: it should be reviewed against approved

intent, use conditions and defined technical requirements. The review should explain what

the sample proves, what remains uncertain and what must change next.

Background — Unstructured feedback often mixes preference,

defects and new scope, making

it difficult to understand what

the next sample must prove.

Key Judgments — Each review note should identify the observed issue,

required change, responsible document and acceptance condition for

• the next
• review. New
• scope
• should
• be

separated from corrections to the approved direction.

Working Method — Inspect fit or dimensions, material response, construction, components and workmanship, then issue one controlled revision record. Compare the physical evidence with the governing specification before assigning a decision or requesting another sample.

Common Risks — Scattered review notes, contradictory markups and changes without version control allow old instructions to return during sampling. Review quality also declines when preference

is written as a defect or when the cause of an issue is assumed without evidence. Feedback spread across channels. Markups without a

governing file version. Symptoms recorded without location or evidence. New ideas mixed with correction requests. Acceptance conditions omitted from the next-sample brief.

Practical Deliverables — The practical deliverable is a consolidated review with annotated evidence, decision status, updated specifications and open questions. Review Record Observation Describe what is visible or measurable without assigning an unsupported cause. Decision Classify the point as accepted, revise, verify or open for further

evidence. Required change State the requested outcome and identify the document or product area it affects. Evidence link Connect photographs, measurements or handling observations to the numbered review point. Next gate Define what the revised sample must demonstrate before the point can close.

Next Article — Return to product definition to see how clear scope creates a stronger foundation for every

later review. The cycle restarts only when new evidence changes the approved product boundary.