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| Criterion |  Agile NoEstimates |  Operations 5 Whys |  Operations 8D Problem Solving |  Operations Root Cause Tree Analysis |
|---|---|---|---|---|
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 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 problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. |
Complexitydifferent | Medium | Low | High | Medium |
Timedifferent | laufend | 15-30 min | 1-6 Wochen | 1-3 h |
Participantsdifferent | 2-12 | 2-6 | 4-10 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Throughput Data, Flow Forecast, Slicing Rules | Root cause notes, Countermeasures | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | EstimationForecastingFlow | Root causeIncidentLeanProblem solving | QualityProblem solvingRoot cause | Root causeTreeIncidentQuality |