View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  Operations Barrier Analysis |  Operations Family Tree Analysis |  Innovation Contradiction Analysis |  Operations 5 Whys |
|---|---|---|---|---|
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 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. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 2-4 h | 2-4 h | 60-120 min | 15-30 min |
Participantsdifferent | 2-6 | 2-6 | 2-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Family Tree Diagram, Pattern Notes, Systemic Measures | Contradiction Statement, Abstraction Notes, Solution Principles, Concept Ideas | Root cause notes, Countermeasures |
Tagsno overlap | Root causeSafetyIncident | Root causePatternsIncidentSystemic | ContradictionsInnovationProblem solving | Root causeIncidentLeanProblem solving |