Reduction, Emergence, and Ordinal Physicalism

A metaphysics of the world described by contemporary science faces the problem of the relative ontological status of microphysical constituents (e.g. elementary particles), ultimate mathematical structures (e.g. of the Standard Model and General Relativity), and complex macroscopic systems with their arguably emergent properties. Justus Buchler's ordinal metaphysics, which provides a "view from anywhere" by analyzing whatever is under consideration through its location in an order of relationships, refusing to privilege any type of being, contributes a fresh perspective to this discussion. While Buchler's metaphysics of natural complexes might seem too pluralistic to be compatible with physicalism—since the latter grants metaphysical priority to the physical and to science's claims about it—a physicalist account can be conceived inside his ordinal metaphysics. Like the Aristotelian "metaphysics of the middle," such an approach avoids both the Democritean metaphysics of Simples and the Platonist metaphysics of the Whole. In so doing it provides special resources for conceiving the status of wholes and components commonly disputed by reductionists and emergentists, e.g. complex material systems, organisms, and minds. Towards that end, this paper sketches the outlines of an ordinal physicalism.