An Infinite Number of Monkeys David Beaver Abstract: Many theories of presupposition fail to account for the pragmatic nature of presuppositional justification. An alternative account will be presented in which accommodation is essentially nonstructural: the material to be accommodated cannot be predicted purely by consideration of the form of the utterance, but instead makes essential use of worldknowledge and commonsense reasoning. The account will essentially consist of the extension of (a reformulated version of) the Context Change Potential (CCP) model due to Heim, Karttunen and Stalnaker, with a pragmatic module.