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Vacuous truth
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== Examples == These examples, one from [[mathematics]] and one from [[natural language]], illustrate the concept of vacuous truths: * "For any integer ''x'', if {{nowrap|''x'' > 5}} then {{nowrap|''x'' > 3}}."<ref>{{Cite web|url=https://math.stackexchange.com/questions/734418/what-precisely-is-a-vacuous-truth|title=logic β What precisely is a vacuous truth?|website=Mathematics Stack Exchange}}</ref> β This statement is [[Truth|true]] non-vacuously (since some [[integer]]s are indeed greater than 5), but some of its implications are only vacuously true: for example, when ''x'' is the integer 2, the statement implies the vacuous truth that "if {{nowrap|2 > 5}} then {{nowrap|2 > 3}}". * "All my children are goats" is a vacuous truth when spoken by someone without children. Similarly, "None of my children is a goat" would also be a vacuous truth when spoken by the same person.
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