<Pietro Ispano, scholasticism, syllogism, Aristotle, logic>, <antinomy, fallacia in dictione, fallacia extra dictione> (Lat. a dicto simpliciter ad dictum secundum quid) the informal fallacy of applying a generally reliable rule to a particular case without considering the qualifying features that make it an exception to the rule. Example: "Since authors of best-selling books usually appear on television talk shows, and the Pope is in fact the author of a best-selling book, it follows that the Pope will soon appear on a television talk show". Unlimited applicability to every instance would follow syllogistically only from a genuinely universal proposition, the truth of which is often difficult to defend. Merely probable guidelines are easier to establish as "rules of thumb", but do not deserve to be applied so indiscriminately.
[A Dictionary of Philosophical Terms and Names]
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