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| Criterion |  Agile NoEstimates |  Operations 5 Whys |  Operations Barrier Analysis |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | When estimating slows a team down more than it helps, it shifts the focus to flow, small slices, and real lead time. It sorts work by value, risk, and delivery ability. The result is captured as Throughput Data, Flow Forecast, and Slicing Rules. | 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 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 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. |
Complexitydifferent | Medium | Low | Medium | High |
Timedifferent | laufend | 15-30 min | 2-4 h | 1-6 Wochen |
Participantsdifferent | 2-12 | 2-6 | 2-6 | 4-10 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Throughput Data, Flow Forecast, Slicing Rules | Root cause notes, Countermeasures | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | EstimationForecastingFlow | Root causeIncidentLeanProblem solving | Root causeSafetyIncident | QualityProblem solvingRoot cause |