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| Criterion |  Delivery Value Stream Mapping |  Operations 5 Whys |  Operations Fishbone Diagram |
|---|---|---|---|
Purposedifferent | 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. | 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 a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 1-3 h | 15-30 min | 30-60 min |
Participantsdifferent | 4-10 | 2-6 | 2-8 |
Formatsame | Workshop | Workshop | Workshop |
Outputdifferent | Current-state map, Future-state map, Bottleneck list | Root cause notes, Countermeasures | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | LeanFlowWasteDelivery | Root causeIncidentLeanProblem solving | Root causeQualityOperations |
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