a quick search of OneLook gave me this:

(in other words, it looks to have been a typo, or he mis-spoke...)


Quick definitions (Casuistry)

# noun: moral philosophy based on the application of general ethical principles to resolve moral dilemmas
# noun: argumentation that is specious or excessively subtle and intended to be misleading

Encyclopedia article

Casuistry is any attempt to determine the correct response to a moral problem, often a moral dilemma, by drawing conclusions based on parallels with agreed responses to pure cases, also called paradigms. Another common everyday meaning is "complex reasoning to justify moral laxity."


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