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Criterion	Operations Fishbone Diagram	Architecture Architecture Communication Canvas	Operations Kepner-Tregoe	Operations Failure Mode and Effects Analysis
Purposedifferent	When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers.	The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design.	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.	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	Medium	High	High
Timedifferent	30-60 min	60-120 min	2-8 h	2-6 h
Participantsdifferent	2-8	2-8	2-8	3-10
Formatdifferent	Workshop	Workshop + async	Workshop + async	Workshop
Outputdifferent	Fishbone Diagram, Cause Categories, Investigation Backlog	Communication Canvas, Stakeholder Messages, Architecture Communication Plan	Problem Analysis, Decision Analysis, Risk Plan	FMEA Table, Risk Priority, Mitigation Actions
Tagsno overlap	Root causeQualityOperations	ArchitectureCommunicationStakeholdersCanvas	Problem solvingRoot causeDecisionOperations	RiskQualityOperationsRoot cause