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| Criterion |  Operations Root Cause Tree Analysis |  Innovation Lean Startup |  Operations Fishbone Diagram |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | For uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | 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 | Medium | Medium | Low | High |
Timedifferent | 1-3 h | Wochen bis Monate je Lernzyklus | 30-60 min | 2-6 h |
Participantsdifferent | 2-8 | 2-8 | 2-8 | 3-10 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Fishbone Diagram, Cause Categories, Investigation Backlog | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | Root causeTreeIncidentQuality | LeanStartupValidationMVP | Root causeQualityOperations | RiskQualityOperationsRoot cause |