““The other common Tibetan classification scheme is to label streams z and 3 as Mere Mentalism and place them doxographically below Centrism, which is then called "the system of self-emptiness" (rangtong). The system of Maitreya, Asanga, and Vasubandhu is labeled "the Centrism of other-emptiness" (shentong) and categorized under Centrism. This approach is usually taken by the followers of Shentong-Madhyamaka, such as Jamgon Kongtrul Lodro Taye. Often then, this latter form of "Centrism" is considered to be superior to the former. In this approach too, the system of epistemology and reasoning of stream 3 is usually treated separately as the distinct topic of valid cognition.””