 …for a given analysandum, there will often be multiple candidates for being the relevant extra-mental phenomenon. If we set out to study knowledge empirically, as Kornblith instructs us, we will have an excess of candidate extra-mental phenomena. Starting with Kornblith’s preferred candidate, there is the set of states that consist in a creature believing a true proposition as a result of using a reliable process. Second, there is the set of states that consist in a creature believing something true (period). Third, there is the set of states consisting in a creature believing a proposition justifiedly (without its being true). Finally, there is a host of additional candidates, each corresponding to a different theory that was floated in response to the Gettier problem. Which of these many candidate extra-mental phenomena should philosophers of knowledge seek to investigate empirically? And how should they choose the one that is really knowledge?