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| Criterion |  Innovation Double Diamond |  Operations Root Cause Tree Analysis |  Operations A3 Problem Solving |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | For complex problems with a fuzzy situation, the method cleanly separates search space and decision. It first creates breadth in understanding and then focus in elaboration. This brings open questions, problem definition, and solution path into a traceable movement. | 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 a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | 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 | Medium | High |
Timedifferent | Wochen bis Monate | 1-3 h | 45-90 min | 2-6 h |
Participantsdifferent | 3-12 | 2-8 | 2-5 | 3-10 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | Cause Tree, Evidence Notes, Countermeasures | A3 Report, Action Plan, Root Cause Analysis | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | ProcessDivergenceInnovation | Root causeTreeIncidentQuality | LeanProblem solvingCoachingOperations | RiskQualityOperationsRoot cause |