Taxonomies of living things and the methods used to produce them changed little with the institutionalization of evolutionary thinking in biology. Instead, the relationships expressed in existing taxonomies were merely reinterpreted as the result of evolution, and evolutionary concepts were developed to justify existing methods. I argue that the delay of the Darwinian Revolution in biological taxonomy has resulted partly from a failure to distinguish between two fundamentally different ways of ordering identified by Griffiths : classification and systematization. Classification consists (...) of ordering entities into classes, groups defined by the attributes of their members; in contrast, systematization consists of ordering entities into systems, more inclusive entities whose existence depends on some natural process through which their parts are related. Evolutionary, or phylogenetic, systematics takes evolutionary descent to be the natural process of interest in biological taxonomy. I outline a general framework for a truly phylogenetic systematics and examine some of its consequences. (shrink)

Darwinism is ‘much more than a theory’, said the German botanist Albert Wigand in 1875; ‘it is a frame of mind which dominates thought, a resuscitated “Naturphilosophie”, in which the terms “Polarity”, “Totality”, “Subject”, “Object” are replaced by terms such as “Struggle for Existence”, “Inheritance”, “Selection”, and so on.’ Subsequent events have indicated that Wigand had a point. But it is not clear to us yet what exactly the point is. Interest in Man's Place in Nature, and in his alleged (...) biological uniqueness as a language-user and tool-maker, is as great now as it was in 1871 when Darwin's Descent of Man was first published. We now have access to well over a hundred years' worth of material sparked off by The Origin of Species , linking Darwin's theory of evolution by natural selection to almost every field under the sun. Yet the precise status of his theory is still the subject of vigorous controversy in philosophy of science. (shrink)