 The examination of “reliable cognition” (tshad ma) is the core subject of Buddhist epistemological works in India and Tibet. In the Tibetan tradition, it is subsumed under the broader enterprise of classification of “mind” or “mental episodes” (Tib. blo) and involves the determination of the objects which the respective cognitions bear on. Tibetan authors typically proceed by establishing various typologies of objects and of mental episodes and elucidating the various ways in which mental episodes are related to objects. Mental episodes are associated with different operations and are categorized via progressive subdivisions based on criteria that are also instrumental in defining reliable cognition. The characterization of the different types of objects, in particular within the typology of “apprehended objects” (see 2.1.2, a), is tied with the adoption of a specific ontological and epistemological framework. 