Understanding consisting in what is learned (Buddhism)

This is understanding acquired by from hearing another person; it is learned, effected by tradition .

On the Path of Purification of Hinayana Buddhism, panna (understanding) is considered as of one kind (monad), of two kinds (dyads), of three kinds (triads) or of four kinds (tetrads). There are five dyads, four triads and two tetrads. All have the characteristic of penetrating the individual essences or true nature of states (monad). In the first triad, this is compared with understanding consisting in what is reasoned or in development.