 Gelug considers the two natures of each phenomenon as the defining factor of the two truths. It argues that the conventional nature of an entity, as verified by a conventionally reliable cognitive process, determines the defining criterion of conventional truth; the ultimate nature of the same entity, as verified by an ultimately reliable cognitive practice, determines the defining criterion of ultimate truth. Since both truths are ontologically as well as epistemologically interdependent, knowledge of conventionally real entitity as dependently arisen suffices for knowledge of both truths. In contasty non-Gelug schools—Nyingma, Kagyü and Sakya Non-Gelug, as we have seen, rejects Gelug’s dual-nature theory, treating each conventional entity as satisfying only the definition of conventional truth and taking the definition of ultimate truth to be ontologically and epistemologically transcendent from conventional truth. They argue, instead, it is through the perspectives of either an ordinary being or an unenlightened exalted being (āryas) that the definition of conventional truth is verified—fully enlightened being (buddhas) do not experience the conventional truth in any respect. Similarly, for non-Gelug, no ordinary being can experience the ultimate truth. Ultimate truth transcends conventional truth, and the knowledge of empirically given phenomena as dependently arisen could not satisfy the criterion of knowing ultimate truth.