Category: logic

English: syllogism and enthymeme

The tutor comments on constructions for making assertions. A syllogism is the familiar structure: Horses have four legs. Bessie is a horse. Bessie must have four legs. Sometimes, step 1 or 2 is left out. The resulting assertion is an

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English: the difference between “true” and “valid”

The tutor comments on subtleties of logic. According to Harbrace1, a true statement is one based on widely-accepted, well-supported belief. A valid argument, on the other hand, is based on sound logic. “True” and “valid”, therefore, don’t necessarily apply simultaneously.

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