ABSTRACT
Keywords: accommodation, background assumption, defeasibility, entailment, factivity, metalinguistic negation, pragmatic presupposition, presupposition trigger, projection problem, semantic presupposition
3.1 Introduction This chapter is about information that is accommodated by the addressee as part of the non-controversial background necessary for utterance to be a sensible or an appropriate thing to say. Sometimes these accommodations seem to be triggered by a particular grammatical structure or lexical item, sometimes their recovery appears to be required for pragmatic reasons. Traditionally, the accommodated beliefs necessary for an utterance to make sense are known as semantic presuppositions and the accommodations needed for an utterance to be appropriate are known as pragmatic presuppositions.
