 Concerning Pylyshyn’s (1984) attack on reductionist methodology (see  §1.5  above), Patricia Churchland (1986: Chapter 9) suggests that functional theories are constructed in lower level sciences. New levels of theory thus get inserted between those describing the structure of the lower level kinds and those of purely functional kinds: between, for example, the physiology of individual neurons and cognitive psychology. We might find a common neurofunctional property for a given type of psychological state across a wide variety of distinct brains (or even the same brain over time). And if the scope of the macro-theory doesn’t extend beyond that of its microfunctional counterpart, then reduction will be achieved despite vast multiple realizability at the microstructural level. Neurocomputational approaches that have blossomed since the early 1990s give real empirical credence to Churchland’s suggestion.