Abstract
Justus Buchler’s 1966 Metaphysics of Natural Complexes seems so unique as to be sui generis. In it he declares that everything discriminable in any way is a “natural complex,” including every fact, substance, particular, process, universal, experience, property, mind, etc., even the concept of a natural complex itself. Every natural complex obtains in multiple orders of relations to other complexes, so each complex has indefinitely many “integrities,” each its function in some order. No complex is any more or less real than any other; witches and whales are equally real, one in an order of historical fiction, another in the order of zoology. The totality of complexes is not a...