How can we use the triple round model to understand dependent origination?

In the Visuddhimagga (but not in the suttas) and possibly other commentaries, we can find the triple round model, which can be used to explain dependent origination (*paticcasamuppada*) . The first round is called the round of defilement (*kilesa-vaṭṭa*) which includes ignorance (*avijjā*), craving (*tanha*) and clinging (*upādāna*). The second round is called the round of action (*kamma-vaṭṭa*) which includes mental formations (*saṅkhāra*) and becoming (*bhava*). The third round is called the round of results (*vipāka-vaṭṭa*) which includes consciousness (*viññāṇa*), name-form (*nāmarūpa*), sixfold sense base (*saḷāyatana*), contact (*phassa*) and feeling (*vedanā*). Sometimes, it also includes birth (*jāti*), death and the rest of suffering (*jarāmaraṇa*). The meaning of *vaṭṭa* according to wisdomlib is: > Vaṭṭa, 1 (adj. -nt.) (pp. of vṛt, Sk. vṛtta in meaning of “round” as > well as “happened, become” etc. The two meanings have become > differentiated in Pāli: vaṭṭa is not found in meaning of “happened. ” > All three Pāli meanings are specialized, just as the pres. vaṭṭati is > specialized in meaning “behoves”) 1. round, circular; (nt.) circle > PvA. 185 (āyata+); KhA 50 (°nāli). See cpd. °aṅguli.—2. (fig.) > “rolling on, ” the “round” of existences, cycle of transmigrations, > saṃsāra, evolution (=involution) (as forward or ascending circle of > existences, without implying a teleological idea, in contrast to > vivaṭṭa “rolling back” or devolution, i.e. a new (descending) cycle of > existence in a new aeon with inverted (vi-) motion, so to speak) Question 1: How can we use the triple round model to understand dependent origination, **especially within this lifetime**? What is the correct interpretation of the triple round model? Question 2: How can we understand the link from the triple round to the Wheel of Becoming (*bhavachakra*)? (statement below from here ): > So this Wheel of Becoming, having a triple round with these three > rounds, should be understood to spin, revolving again and > again, forever, for the conditions are not cut off as long as the > round of defilements is not cut off. Question 3: Is it true that ignorance is always the starting point to get the perpetual wheel-turning started? Perspectives from different traditions are welcomed.