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| Criterion |  Operations Causal Factor Analysis |  Operations 8D Problem Solving |  Product Discovery Smoke Test |
|---|---|---|---|
Purposedifferent | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | 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. | When demand only needs to be roughly verified, it tests interest with minimal effort. It measures whether people would take a next step at all. |
Complexitydifferent | High | High | Low |
Timedifferent | 2-6 h | 1-6 Wochen | 1-5 Tage |
Participantsdifferent | 3-10 | 4-10 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Async |
Outputdifferent | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Interest Metrics, Conversion Signal, Learning Note |
Tagsno overlap | CausalityIncidentRoot causeTimeline | QualityProblem solvingRoot cause | ValidationExperimentsDemandGrowth |
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