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| Criterion |  Operations Barrier Analysis |  Operations Family Tree Analysis |  Innovation Contradiction Analysis |  Innovation TRIZ |
|---|---|---|---|---|
Purposedifferent | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | For a series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring. | When a system should improve while another measure suffers as a result, the method makes the underlying conflict precisely formulable. It separates the desired effect from its side effect. This makes solutions possible that address the contradiction deliberately instead of half-heartedly. | 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. |
Complexitydifferent | Medium | Medium | Medium | High |
Timedifferent | 2-4 h | 2-4 h | 60-120 min | 1-4 h |
Participantsdifferent | 2-6 | 2-6 | 2-8 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Family Tree Diagram, Pattern Notes, Systemic Measures | Contradiction Statement, Abstraction Notes, Solution Principles, Concept Ideas | Contradiction Statement, Inventive Principles, Solution Concepts |
Tagsno overlap | Root causeSafetyIncident | Root causePatternsIncidentSystemic | ContradictionsInnovationProblem solving | InnovationProblem solvingContradictionsCreativity |