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| Criterion |  Innovation Morphological Analysis |  Operations 5 Whys |  Innovation TRIZ |  Operations Root Cause Analysis |
|---|---|---|---|---|
Purposedifferent | For a search for solutions with many degrees of freedom, a grid emerges for systematic combinations. The method separates features, variants, and exclusion criteria, so the space gets explored deliberately. | 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. | For technical contradictions or trade-offs, the method looks for solutions that resolve opposing requirements at the same time. It translates limits into an explicit picture of conflict that becomes workable. This produces not just compromises but more elegant principles. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. |
Complexitydifferent | Medium | Low | High | Medium |
Timedifferent | 1-3 h | 15-30 min | 1-4 h | 1-4 h |
Participantsdifferent | 2-8 | 2-6 | 2-8 | 3-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Morphological Box, Concept Combinations, Idea Shortlist | Root cause notes, Countermeasures | Contradiction Statement, Inventive Principles, Solution Concepts | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | IdeationInnovationCreativity | Root causeIncidentLeanProblem solving | InnovationProblem solvingContradictionsCreativity | Root causeProblem solvingQualityIncident |