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| Criterion |  Operations Barrier Analysis |  Innovation Design Sprint |  UX Research Surveys |  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. | When the product question is unclear and time pressure is high, the method takes a team from an open idea to a testable solution. It connects problem understanding, decision, and learning in one compact format, lowering the risk of spending a lot of energy on a mere guess. | When a topic needs to be validated broadly and many people can answer the same question, surveys gather structured feedback in a scalable form. Answers become comparable and segmentable instead of remaining merely anecdotal. | 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 | High | Medium | Low |
Timedifferent | 2-4 h | 4-5 Tage | 3-14 Tage | 15-30 min |
Participantsdifferent | 2-6 | 5-8 | 50+ | 2-6 |
Formatdifferent | Workshop + async | Workshop | Async | Workshop |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Prototype, Test Findings, Decision Rationale | Survey Results, Charts, Segment Insights | Root cause notes, Countermeasures |
Tagsno overlap | Root causeSafetyIncident | Design sprintPrototypeValidationInnovation | QuantitativeResearchValidation | Root causeIncidentLeanProblem solving |