Secundum quid
Secundum quid (also called secundum quid et simpliciter, meaning "[what is true] in a certain respect and [what is true] absolutely") is a type of informal fallacy that occurs when the arguer fails to recognize the difference between rules of thumb (soft generalizations, heuristics that hold true as a general rule but leave room for exceptions) and categorical propositions, rules that hold true universally.Since it ignores the limits, or qualifications, of rules of thumb, this fallacy is also named ignoring qualifications or sweeping generalizations.[1] Let me tell you: all great composers die young.Hundreds of songs, and he was only 31.The arguer cites only the cases that support his point, conveniently omitting Bach, Beethoven, Brahms etc The following quatrain can be attributed to C. H. Talbot: I talked in terms whose sense was hid, Dividendo, componendo et secundum quid; Now secundum quid is a wise remark And it earned my reputation as a learned clerk.Instances of secundum quid are of two kinds: