'Most' vs 'More Than Half': An Alternatives Explanation

While ‘most’ and ‘more than half’ are generally assumed to be truth-conditionally equivalent, the former is usually interpreted as conveying greater proportions than the latter. Previous work has attempted to explain this difference in terms of pragmatic strengthening or variation in meanings. In this paper, we propose a novel explanation that keeps the truthconditions equivalence. We support this explanation with a computational model of usage in the Rational Speech Act framework. We find that the difference in typical proportions associated with the two expressions can be explained with previously independently motivated semantic and pragmatic mechanisms.