Remarks on Propositional Functions
Department of Linguistics and Philosophy, Massachusetts Institute of Technology, 77 Massachusetts Avenue, 32-d808, Cambridge, MA 02139-4307, USA
Peter Geach has said that Russell's use of propositional function is hopelessly confused and inconsistent. Geach is right, and attempts to say what exactly a Russellian propositional function is, or is supposed to be, are bound to end in frustration. Nevertheless, it may be worthwhile to pursue an account of propositional functions that accommodates a good deal of what Russell says about them and that can provide some of what he expected of them.