What is implicitly involved in making an assertion Hence, according to P F Strawson, a presupposition is a necessary condition for either the truth or the falsity of the statement that presupposes it Thus, for example, "My grand-daughter is a smart baby"whether or not she exhibits intelligent behaviorpresupposes that I do, in fact, have at least one female grand-child Recommended Reading: Douglas N Walton, Argumentation Schemes for Presumptive Reasoning (Erlbaum, 1995) {at Amazon com}; Nirit Kadmon, Formal Pragmatics: Semantics, Pragmatics, Presupposition, and Focus (Blackwell, 2001) {at Amazon com}; and Gennaro Chierchia, Dynamics of Meaning: Anaphora, Presupposition, and the Theory of Grammar (Chicago, 1995) {at Amazon com} Also see OCDL and noesis
A presupposition is something that you assume to be true, especially something which you must assume is true in order to continue with what you are saying or thinking. the presupposition that human life must be sustained for as long as possible
1 - Something that has to be taken for granted for a behavior or statement to make sense 2 - The linguistic equivalents to assumptions Of NLP, Convenient beliefs or assumptions you make when you are doing therapy with someone