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| Criterion |  Innovation Design Sprint |  Operations 5 Whys |  Operations 8D Problem Solving |  Operations Barrier Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | 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 an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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. |
Complexitydifferent | High | Low | High | Medium |
Timedifferent | 4-5 Tage | 15-30 min | 1-6 Wochen | 2-4 h |
Participantsdifferent | 5-8 | 2-6 | 4-10 | 2-6 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Prototype, Test Findings, Decision Rationale | Root cause notes, Countermeasures | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | Design sprintPrototypeValidationInnovation | Root causeIncidentLeanProblem solving | QualityProblem solvingRoot cause | Root causeSafetyIncident |