In the Pali tradition it is only for the sake of definition and description that each dhamma is postulated as if it were a separate entity; but in reality it is by no means a solitary phenomenon having an existence of its own...If this Abhidhammic view of existence, as seen from its doctrine of dhammas, cannot be interpreted as a radical pluralism, neither can it be interpreted as an out-and-out monism. For what are called dhammas -- the component factors of the universe, both within us and outside us -- are not fractions of an absolute unity but a multiplicity of co-ordinate factors. They are not reducible to, nor do they emerge from, a single reality, the fundamental postulate of monistic metaphysics. If they are to be interpreted as phenomena, this should be done with the proviso that they are phenomena with no corresponding noumena, no hidden underlying ground. For they are not manifestations of some mysterious metaphysical substratum, but processes taking place due to the interplay of a multitude of conditions.