Necessary and Sufficient Conditions

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[Revised entry by Andrew Brennan on July 6, 2022.
Changes to: Main text, Bibliography]
A handy tool in the search for precise definitions is the specification of necessary and/or sufficient conditions for the application of a term, the use of a concept, or the occurrence of some phenomenon or event. For example, without water and oxygen, there would be no human life; hence these things are necessary conditions for the existence of human beings. Cockneys, according to the traditional definition, are all and only those born within the sound of the Bow Bells. Hence birth within the specified area is both a…

Originally appeared on Stanford Encyclopedia of Philosophy Read More

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