ومنها: اختلاف التركيب بسبب شك
Another fallacy comes from a doubtful or ambiguous construction.
A restriction such as “only,” “alone,” “always,” or “every” may qualify the subject, the predicate, or a whole proposition. Moving it from one position to another can change the quantification and truth conditions.
The question is what the restriction actually governs. If its scope shifts between the premises and conclusion, the needed identity of logical terms has been lost.
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Semantic Fallacies: Defects of Matter, Form, and Predication
ومنها: اختلاف التركيب بسبب شك
Another fallacy comes from a doubtful or ambiguous construction.
A restriction such as “only,” “alone,” “always,” or “every” may qualify the subject, the predicate, or a whole proposition. Moving it from one position to another can change the quantification and truth conditions.
The question is what the restriction actually governs. If its scope shifts between the premises and conclusion, the needed identity of logical terms has been lost.