Knowledge as 'True Belief Plus Individuation' in Plato

In RepublicV, Plato distinguishes two differentcognitive powers, knowledge and belief, which operate differently on different typesof object. I argue that in Republic VI Plato modifies this account, and claims that there is a singlecognitive power, which under different circumtancesbehaves either as knowledge or as belief. I show that the circumtances which turn true belief into knowledge are the provision of an individuation accountof the object of belief, which reveals the ontological status and the nature of the object. Plato explores many alternative candidates of individuation accounts of objects of true belief, which he discards. I conclude with a Platonic sketch of a teleological account of individuationwhich would satisfy his requirements of turning true belief into knowledge