Understanding consisting in what is reasoned (Buddhism)

This is understanding acquired by one's own reasoning and not from hearing another person. It may be through ingenuity in work, craft, art or science; it may arise from pondering over things, concerning kamma, conformity with truth, conformity with axioms.

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 learned or in development.