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| Criterion |  Decision Making Constraint Analysis |  Systems Thinking Current Reality Tree |  Operations Root Cause Analysis |  Operations Kepner-Tregoe |
|---|---|---|---|---|
Purposedifferent | When an initiative stalls, the limit often lies not in the idea but in hard or soft boundary conditions. Constraint Analysis separates these limits and shows which of them can actually be shaped. | 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. | 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. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. |
Complexitydifferent | Low | High | Medium | High |
Timedifferent | 30-90 min | 2-6 h | 1-4 h | 2-8 h |
Participantsdifferent | 2-8 | 3-8 | 3-8 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries | Current Reality Tree, Core Problems, Intervention Ideas | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | ConstraintsDecisionPlanningOptions | Systems thinkingRoot causeConstraintsCausality | Root causeProblem solvingQualityIncident | Problem solvingRoot causeDecisionOperations |