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| Criterion |  Facilitation Dot Estimation |  Operations 5 Whys |  Delivery Value Stream Mapping |  Operations Root Cause Analysis |
|---|---|---|---|---|
Purposedifferent | When size or effort can only be estimated roughly, Dot Estimation condenses the group's experience into a quick range. It turns individual contributions into a visible selection. The result is captured as an Effort Heatmap, Risk Signals, and Discussion Targets. | 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. | When delivery work dissolves into wait times, handoffs, and hidden effort, Value Stream Mapping makes the actual flow visible. The method exposes bottlenecks, idle time, and feedback loops so lead time and improvement levers become tangible. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. |
Complexitydifferent | Low | Low | Medium | Medium |
Timedifferent | 5-20 min | 15-30 min | 1-3 h | 1-4 h |
Participantsdifferent | 3-20 | 2-6 | 4-10 | 3-8 |
Formatdifferent | Workshop | Workshop | Workshop | Workshop + async |
Outputdifferent | Effort Heatmap, Risk Signals, Discussion Targets | Root cause notes, Countermeasures | Current-state map, Future-state map, Bottleneck list | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | EstimationEffortRisk | Root causeIncidentLeanProblem solving | LeanFlowWasteDelivery | Root causeProblem solvingQualityIncident |