“Reversal” may be seen as a subset of correspondence and association; it denotes a case where the identification of two elements functions to invert their conventional meanings. The logic of original enlightenment itself entails precisely this sort of reversal. It proceeds not from cause (practice) to effect (realization) but from effect to cause. Thus, it inverts conventional notions of enlightenment as a linear process of cultivation culminating in eventual realization; rather, enlightenment is held to be inherent, and it is only when based upon this insight that cultivation is considered meaningful. Cultivation then becomes the expression of original enlightenment. It is because of this reversal of conventional perspective that original enlightenment thought has been referred to as representing a “Copernican revolution.” Reversal as an interpretive technique recapitulates this fundamental reversal at the heart of the notion of original enlightenment. (Page 164)
Original Enlightenment and the Transformation of Medieval Japanese Buddhism