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Criterion	Engineering Failure Scenario Analysis	Systems Thinking Current Reality Tree	Operations 8D Problem Solving	Operations Failure Mode and Effects Analysis
Purposedifferent	In critical processes, it is not enough to plan only for the normal case. Failure Scenario Analysis looks at the path into failure and shows which failures, chains, and control gaps cause the most damage.	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 an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly.	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	Medium	High	High	High
Timedifferent	1-3 h	2-6 h	1-6 Wochen	2-6 h
Participantsdifferent	3-8	3-8	4-10	3-10
Formatdifferent	Workshop	Workshop	Workshop + async	Workshop
Outputdifferent	Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions	Current Reality Tree, Core Problems, Intervention Ideas	8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan	FMEA Table, Risk Priority, Mitigation Actions
Tagsno overlap	FailureResilienceRisk	Systems thinkingRoot causeConstraintsCausality	QualityProblem solvingRoot cause	RiskQualityOperationsRoot cause