Reductionism
The term “Reductionism” has been employed by Herbert V. Guenther
to render the Tibetan term dngos por smra ba (spelled wrongly
there as dngos smar ba), that is, Vastuvāda. This philosophy is
said to include “what seems to be a kind of naive realism through
representative realism towards subjective idealism” (of Vaibhāṣikas,
Sautrāntikas, and Vijñānavādins, respectively). See Guenther 1989: 162 “This
term may best be translated by ‘reductionism because each system so far
mentioned tries to reduce the whole of reality to one or more particular
existents (dngos-po).”
But I wonder if this term is useful at all in conveying the
ontology posited by those Buddhist schools. What is not made clear there is
that the designation Vastuvāda or Vastuvādin is not a term that the
proponents of those schools employ but has been (if I am not mistaken) given
(not quite flatteringly if not pejoratively) by their Mādhyamika opponents.
Some Tibetan schools have gone to the extent of claiming that a Vastuvāda
view is not in a position to independently cause the soteriological
breakthrough.
What is, however, true is that Vaibhāṣikas, Sautrāntikas, and
Vijñānavādins are said to posit some kind of entities (vastu: dngos po),
be they be cognitive (shes pa) or inanimate (bem po), to be
existent, not just nominally (prajñaptisat: btags par yod pa) but
substantially (dravyasat: rdzas su yod pa) and hence they are labelled
as Vastuvādins (dngos por smra ba) and also as Sasvabhāvavādins (ngo
bo nyid yod par smra ba) as opposed to Niḥsvabhāvavādins (ngo bo nyid
med par smra ba).
What is also true is that all Buddhist schools reject any
metaphysical substrate or cause (e.g. God or Self) of
the phenomena and each school reduces all existents to “x-mātra.” By understanding the value of
“x” that each school accepts and the value of “y” that it rejects, we may
understand the kind of ontology proposed by each system. Nonetheless, the term
“reductionism” here seems simply unserviceable.