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Rules of Inference (Part I: Overview)

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Many first-year logic students have heard of the "rules of inference"; in fact, many students may have even heard of a few. But would you be able to define the phrase? Would you be able to say how many of these rules exist? And would you be able to name each one? Here are the nine major rules, clearly listed and generally explained.

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The phrase "Rules of Inference" refers to the most fundamental, albeit simplistic, forms of rational argumentation in logic.

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The phrase "Rules of Inference" refers to the most fundamental, albeit simplistic, forms of rational argumentation in logic. These rules are technically argument forms, whereby substituting each of a rule's pieces with specific information given by the arguer can allow that arguer to offer a "proof" for ...

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