Spotting the difference between formal and informal fallacies

I know the theoretical difference between the two (error in logical form vs error in content/expression) but is there a hard-and-fast method for discerning between them?


asked on Saturday, Aug 01, 2020 02:38:33 PM by Rationalissimo

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Jason Mathias

The composition of the contents is formal logic, the contents within the composition is informal logic. Kind of like a fine art painting, the composition is the placement of the contents within the painting. 

Formal will work with any argument, informal wont. Likewise, a good compositions will work with any subject matter in a painting. 

answered on Saturday, Aug 01, 2020 06:17:36 PM by Jason Mathias

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Bo Bennett, PhD

I know of no such rule (not that one doesn't exist). There aren't that many deductive fallacies, so perhaps memorization is the best method.

answered on Sunday, Aug 02, 2020 08:44:03 PM by Bo Bennett, PhD

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