LING 201 Lecture Notes - Lecture 26: Presupposition, Microsoft Powerpoint, Logical Consequence
Document Summary
Presupposes: there is exactly one cocktail bar in leacock. November 30th: they met in the cocktail bar in leacock, [they met in the cocktail bar in leacock] and [they went to a philosophy lecture]. *truth tree in powerpoint: they will not meet in the cocktail bar in leacock. Usually, presuppositions are not affected by the addition of negation: the presupposition is said to project past negation. In this regard, presuppositions are very different from semantic entailments, which are affected by negation. We will meet in the cocktail bar in leacock. semantically entails. We will not meet in the cocktail bar in leacock. does not semantically entail. Perhaps john was laid off yesterday: if [they met in the cocktail bar in leacock], [they went to a philosophy lecture]. Complex sentences (usually) inherit the presupposition of their parts. This means that usually truth-value gaps spread upwards. Presupposes: there is only one cocktail bar in leacock.
