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| Criterion |  Product Discovery Context Canvas |  UX Research Contextual Inquiry |  Operations 8D Problem Solving |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | When an environment of users, systems, and constraints is hard to grasp, it puts the context compactly on the table. It creates a clear reading of influence, boundary, and dependency. | When work processes are known only from accounts and the real context stays hidden, Contextual Inquiry makes behavior at the workplace visible. Observation and follow-up questions together show how people actually work, get interrupted, and improvise. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Low | Medium | High | Low |
Timedifferent | 45-90 min | 1-3 Wochen | 1-6 Wochen | 15-30 min |
Participantsdifferent | 3-10 | 4-12 Beobachtungen | 4-10 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Context canvas, Open questions, Shared context notes | Field Notes, Workflow Insights, Pain Points | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Root cause notes, Countermeasures |
Tagsno overlap | ContextFramingRequirementsCanvas | UX researchObservationContext | QualityProblem solvingRoot cause | Root causeIncidentLeanProblem solving |