Affirming the consequent

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Science and technology

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What Wikipedia says

In propositional logic, affirming the consequent (also known as converse error, fallacy of the converse, or confusion of necessity and sufficiency) is a formal fallacy (or an invalid form of argument) that is committed when, in the context of an indicative conditional statement, it is stated that because the consequent is true, therefore the antecedent is true.

Excerpt from the Wikipedia article “Affirming the consequent”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

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