Homogeneity, Non-Maximality, and all

This article develops a theory of the non-maximal readings of sentences with plural definite descriptions that treats them as a pragmatic phenomenon that arises from the context-dependent interaction of the well-known homogeneity property of plural predication on the one hand, with independent pragmatic principles on the other. This allows us to, among other things, explain the dual effect of all: as a matter of its semantics, it removes the homogeneity property, but because that is one of the necessary ingredients for non-maximal readings, the function of all as a maximiser/'slack regulator' emerges as a consequence. This theory will then be further explored in the context of an improved empirical picture of the homogeneity phenomenon.