ca·su·ist·ry /ˈkæʒwəstri, ˈkæʒə-/
 決疑論,決疑法,詭辯
 Cas·u·ist·ry a.
 1. The science or doctrine of dealing with cases of conscience, of resolving questions of right or wrong in conduct, or determining the lawfulness or unlawfulness of what a man may do by rules and principles drawn from the Scriptures, from the laws of society or the church, or from equity and natural reason; the application of general moral rules to particular cases.
    The consideration of these nice and puzzling question in the science of ethics has given rise, in modern times, to a particular department of it, distinguished by the title of casuistry.   --Stewart.
    Casuistry in the science of cases (i.e., oblique deflections from the general rule).   --De Quincey.
 2. Sophistical, equivocal, or false reasoning or teaching in regard to duties, obligations, and morals.
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 casuistry
      n 1: argumentation that is specious or excessively subtle and
           intended to be misleading
      2: moral philosophy based on the application of general ethical
         principles to resolve moral dilemmas