Use of Smart but Unsound Reasoning

This page is the CodyCross answer for the clue below from Mexico, Group 1374, Puzzle 5 (Flyers of Papantla).

Question is: Use of Smart but Unsound Reasoning

and the answer is: CASUISTRY

Word Meaning:

CASUISTRY — The process of answering practical questions by means of interpretation of rules, or of cases that illustrate such rules, especially in ethics; case-based reasoning.

Definitions from Wiktionary.