[russellperry]

"Aristotle takes kind of the opposite tack - he is also very focused on building ontologies and taxonomies, but he views them as constructions of the intellect imposed upon their subjects, rather than being the most fundamental reality of the subject prior to its actual being."

Well, not exactly, and in fact this would turn Aristotle into his metaphysical opposite: a nominalist in the mold of Occam.

For Aristotle the formal cause of a substance is in fact absolute, every bit as real and 'prior' as with Plato, the big difference between the two being the question of epistemology, or how we become acquainted with the form to begin with. Yes, Aristotle argues that we know the form of a thing from experience, but the form of that thing, and the abstractions we produce from many experiences from similar things, are as real as with Plato and, as in Plato, point to higher, more organized spiritual structures that comprise ultimate reality.

Call me when somebody comes up with a Whitehead-ean programming paradigm.