In the sixth chapter of his Theory of Knowledge Roderick Chisholm refers to an example suggested by Alexius Meinong in order to show that the traditional definition of knowledge is in need of some modification. In this paper I should like to show that Chisholm's argument rests on a mistaken assumption as to what an individual's doxastic responsibilities are.

Edmund Gettier is Professor Emeritus at the University of Massachusetts, Amherst. This short piece, published in 1963, seemed to many decisively to refute an otherwise attractive analysis of knowledge. It stimulated a renewed effort, still ongoing, to clarify exactly what knowledge comprises.