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Selected:Assumption SurfacingHypothesis-Driven Troubleshooting8D Problem SolvingFailure Mode and Effects Analysis
| Criterion |  Decision Making Assumption Surfacing |  Engineering Hypothesis-Driven Troubleshooting |  Operations 8D Problem Solving |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | When systems fail unexpectedly, spontaneous attempts often produce more noise than insight. Hypothesis-driven Troubleshooting translates symptoms into testable assumptions and makes troubleshooting learnable. | 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 process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. |
Complexitydifferent | Low | Medium | High | High |
Timedifferent | 45-90 min | 30-240 min | 1-6 Wochen | 2-6 h |
Participantsdifferent | 2-8 | 1-6 | 4-10 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Assumption List, Critical Assumptions, Learning Plan | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | AssumptionsRiskDecisionDiscovery | TroubleshootingProblem solvingDiagnosis | QualityProblem solvingRoot cause | RiskQualityOperationsRoot cause |