FieldTechnique
Deception Check — MOM, POP, MOSES, EVE
Intelligence-community deception analysis, after Heuer
Motive, opportunity, and means; past opposition practices; my own sources and their vulnerability; evaluation of the evidence itself.
Use
Whenever a source is unusually convenient, or an adversary has a history of manipulation.
Limit
It raises the question; it rarely settles it. Deception belongs in the hypothesis set either way.