LessonsSophistical Syllogism: Illusory Premises, Deceptive Resemblances and FallaciesQuiz

قياس فاسد إما من جهة المادة فقط، أو من جهة الصورة فقط، أو كليهما
A corrupt syllogism may be defective in its matter, its form, or both.

DefectDiagnostic question
MatterAre the premises trustworthy and true?
FormDoes the conclusion follow from them?
BothAre both the premises and the entailment defective?

This applies the earlier distinction between the matter and form of a syllogism. An adequate evaluation uses both tests independently.

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Three locations of inferential error

Sophistical Syllogism: Illusory Premises, Deceptive Resemblances and Fallacies

قياس فاسد إما من جهة المادة فقط، أو من جهة الصورة فقط، أو كليهما
A corrupt syllogism may be defective in its matter, its form, or both.

DefectDiagnostic question
MatterAre the premises trustworthy and true?
FormDoes the conclusion follow from them?
BothAre both the premises and the entailment defective?

This applies the earlier distinction between the matter and form of a syllogism. An adequate evaluation uses both tests independently.