Logos & Episteme Logos & Episteme
Marcoen J.T.F. CABBOLET
ABSTRACT: The JTB definition of knowledge has been shown by Gettier to be incomplete: its three conditions are necessary for knowledge, but not sufficient. We argue that the JTB definition can be completed with a very simple fourth condition, namely that the justification for the belief in p must be sufficient to exclude ¬p. It is shown that the resulting JTB+S definition solves the Gettier problem without giving rise to the opposite problem.
