>>20The symbolic 2 as dualist counter-parent to 0 - nothigness.
Duality and Nothingness - Duality of Good and Evil is born out of Abrahamic metanarrative while nothingness(Śūnyatā lit. emptiness, nothingness, hollowness) is the ultimate nature of reality in Buddhism.
We could argues Śūnyatā is truer description of our hollow reality than theistic dualism, with its illusions of free will counteracted by interdependence of all beings(Pratītyasamutpāda lit. dependent arising) which provides far more logical and objective picture of the universe.
Dualism is ultimately a system of guilt putting the responsibility of actions from the entire illusory Maya realm into a specific being - who has free will to sin, but due essentially being a part of the system is driven into a position of creating evil. If we divorce morality from our concept of dualism, being good is what benefits humans or beings we like. Buddhism encapsulates this behavior without creating a system of guilt and atonement for sins of self: instead the person is made to realize their self does exist(a hollow form of Śūnyatā , just like all material beings are), and their suffering is the product of delusion of being attached to self. 20 symbolizes the system coming to meeting point, some form of syncretic belief system that incorporates both dualism and Śūnyatā as valid descriptions of reality on different levels. 0 being at the last place signifies its subtle position, an esoteric doctrine that is dependent on dualism(2) to reach its own refutation, without falling into nihilistic ideas of moral relativism which dualists view as corruption and denial of God(the ultimate good).
20 encapsulates religious zeitgeist as the Eastern philosophy merges with Judeo-Christian morality.