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| Criterion |  Delivery Value Stream Mapping |  Operations Causal Factor Analysis |  Operations Bottleneck Analysis |  Systems Thinking Current Reality Tree |
|---|---|---|---|---|
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 an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | For a flow that backs up at one point, the method looks for the capacity limit with the greatest leverage. It explains why extra effort elsewhere barely improves throughput. | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. |
Complexitydifferent | Medium | High | Medium | High |
Timedifferent | 1-3 h | 2-6 h | 1-3 h | 2-6 h |
Participantsdifferent | 4-10 | 3-10 | 3-8 | 3-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Current-state map, Future-state map, Bottleneck list | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Bottleneck Map, Flow Metrics, Improvement Options, Follow-up Measures | Current Reality Tree, Core Problems, Intervention Ideas |
Tagsno overlap | LeanFlowWasteDelivery | CausalityIncidentRoot causeTimeline | FlowMeasurementConstraints | Systems thinkingRoot causeConstraintsCausality |