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Criterion
Paper illustration for Fault Isolation.
Engineering
Fault Isolation
A hypothetical failure makes concrete risks, signals, and fitting mitigations visible.
Decision Making
Pre-Mortem
Paper illustration for Constraint Analysis.
Decision Making
Constraint Analysis
Purposedifferent
In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected.In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures.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.
Complexitydifferent
MediumLowLow
Timedifferent
30-180 min20–45 min30-90 min
Participantsdifferent
1-6Small cross-functional group2-8
Formatdifferent
Workshop + asyncWorkshopWorkshop + async
Outputdifferent
Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault AreaRisk list, Mitigation plan, Assumption logConstraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries
Tagsno overlap
TroubleshootingDiagnosisEngineering
RiskDecisionFailurePlanning
ConstraintsDecisionPlanningOptions
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Often compared together

Methods with strong topical overlap with the current selection, not yet in the comparison.

Paper illustration of an assumption matrix with prioritized test cards
Decision Making
Assumption Surfacing
Paper illustration of Business Model Stress Test with its method-specific working model.
Business Strategy
Business Model Stress Test
Decision Tree method illustration showing its working structure
Decision Making
Decision Tree
Paper illustration for Failure Scenario Analysis.
Engineering
Failure Scenario Analysis