Abstract

In "Truth" Michael Dummett presents a case for intuitionist logic as the logic of ordinary discourse. The case depends on a supposed need to make two intuitions mesh: first, that it is senseless to suppose, of any statement, that it is neither true nor false; second, that there is no guarantee, for every statement, that either there is something in the world to make it true, or there is something to make it false. This paper argues, developing a notion of natural isostheneia, that Dummett's first intuition is wrong as he reads it, and that, consequently, his case for intuitionist logic collapses.