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| Criterion |  Agile Ideal Days |  Systems Thinking Current Reality Tree |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|
Purposedifferent | When effort needs to be thought of as real working time, it offers a simple common denominator for comparison. It sorts work by value, risk, and delivery ability. The result is captured as Ideal Day Estimates, Assumption Notes, and Capacity Caveats. | 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. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. |
Complexitydifferent | Low | High | High |
Timedifferent | 15-60 min | 2-6 h | 2-6 h |
Participantsdifferent | 2-9 | 3-8 | 3-10 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | Ideal Day Estimates, Assumption Notes, Capacity Caveats | Current Reality Tree, Core Problems, Intervention Ideas | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | EstimationEffortAgile | Systems thinkingRoot causeConstraintsCausality | RiskQualityOperationsRoot cause |
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