In Posterior Analytics 71b9 12, we find Aristotle’s definition of scientific knowledge. The definiens is taken to have only two informative parts: scientific knowledge must be knowledge of the cause and its object must be necessary. However, there is also a contrast between the definiendum and a sophistic way of knowing, which is marked by the expression “kata sumbebekos”. Not much attention has been paid to this contrast. In this paper, I discuss Aristotle’s definition paying due attention to this contrast (...) and to the way it interacts with the two conditions presented in the definiens. I claim that the “necessity” condition ammounts to explanatory appropriateness of the cause. (shrink)

Aristotle refers to some animal kinds as μέγιστα γένη, or greatest kinds. The goal of this paper is to make clear the nature and significance of these kinds. I argue that Aristotle thinks of greatest kinds as the most general kinds within a specified domain. I then consider the fact that Aristotle’s discussion of animals’ reproductive parts and modes of reproduction in Generation of Animals is organized around divisions related to the cause of each of the features being explained. I (...) conclude that, while classification is an important goal in Aristotle’s biological treatises, it is of little significance that some of the kinds he identifies are referred to as greatest kinds. The important divisions are, for Aristotle, the divisions that best serve his goal of explaining the various features of animals and these divisions sometimes group together and sometimes cut across the commonly recognized, including the greatest, animal kinds. (shrink)

Aristotle refers to some animal kinds as μέγιστα γένη, or greatest kinds. The goal of this paper is to make clear the nature and significance of these kinds. I argue that Aristotle thinks of greatest kinds as the most general kinds within a specified domain. I then consider the fact that Aristotle’s discussion of animals’ reproductive parts and modes of reproduction in Generation of Animals is organized around divisions related to the cause of each of the features being explained. I (...) conclude that, while classification is an important goal in Aristotle’s biological treatises, it is of little significance that some of the kinds he identifies are referred to as greatest kinds. The important divisions are, for Aristotle, the divisions that best serve his goal of explaining the various features of animals and these divisions sometimes group together and sometimes cut across the commonly recognized, including the greatest, animal kinds. (shrink)

We have reason to think that a fundamental goal of natural science, on Aristotle’s view, is to discover the essence-specifying definitions of natural kinds—with biological species as perhaps the most obvious case. However, we have in the end precious little evidence regarding what an Aristotelian definition of the form of a natural kind would look like, and so Aristotle’s view remains especially obscure precisely where it seems to be most applicable. I argue that if we can get a better understanding (...) of how the forms of natural kinds are or come to be known, and how they make things intelligible, we can get a better appreciation of the nature of form in general, as well as solve certain puzzles about form and definition. (shrink)

Theories of epistemology make reference—via the perspective of an observer—to the structure of information transfer, which generates reality, of which the observer himself forms a part. It can be shown that any epistemological approach which implies the participation of tautological structural elements in the information transfer necessarily leads to an antinomy. Nevertheless, since the time of Aristotle the paradigm of mathematics—and thus tautological structure—has always been a hidden ingredient in the various concepts of knowledge acquisition or general theories of information (...) transfer. We hold that Darwin's Evolutionary Theory is the first scientific theory which consistently presupposes a non-tautological structure for the information transfer and, at the same time, keeps it strictly distinct from the tautological metric of scientific observation. The consequences of this technique—namely the dissociation of information from intentionality—have not yet been fully drawn. Erkenntnistheorien beziehen sich über die Perspektive eines Beobachters auf die Struktur des Informationstransfers, der die Realität erzeugt, von der der Beobachter selbst ein Element ist. Man kann zeigen, dass jeder erkenntnistheoretische Ansatz, der an diesem Transfer von Information tautologische Strukturelemente teilnehmen lässt, zu einer Antinomie führt. Dennoch bilden das Paradigma der Mathematik—und damit tautologische Strukturen—seit Aristoteles einen festen Bestandteil von Erkenntnistheorien und generell von Theorien des Informationstransfers. Unserer These zufolge ist Darwins Evolutionstheorie die erste wissenschaftliche Theorie, die den Informations-transfer ausschließlich als nicht-tautologische Struktur auffasst und diese zugleich strikt von der tautologischen Struktur der Beobachtungsmetrik getrennt hält. Die Konsequenzen für die Erkenntnistheorie—namentlich die Trennung von Information und Intentionalitätsind bisher nicht gezogen worden. (shrink)

Aristotle's notion of experience plays an important role in his epistemology as the link between perception and memory on the one side, and higher cognitive capacities on the other side. However, Aristotle does not say much about it, and what he does say seems inconsistent. Notably, some passages suggest that it is a non-rational capacity, others that it is a rational capacity and that it provides the principles of science. This paper presents a unitary account of experience. It explains how (...) experience grows from perception and memory into a rational capacity, and in what way it provides the principles. (shrink)

A naturalistic account of the strengths and limitations of cladistic practice is offered. The success of cladistics is claimed to be largely rooted in the parsimony-implementing congruence test. Cladists may use the congruence test to iteratively refine assessments of homology, and thereby increase the odds of reliable phylogenetic inference under parsimony. This explanation challenges alternative views which tend to ignore the effects of parsimony on the process of character individuation in systematics. In a related theme, the concept of homeostatic property (...) cluster natural kinds is used to explain why cladistics is well suited to provide a traditional, verbal reference system for the evolutionary properties of species and clades. The advantages of more explicitly probabilistic approaches to phylogenetic inference appear to manifest themselves in situations where evolutionary homeostasis has for the most part broken down, and predictive classifications are no longer possible. (shrink)

Aristotle’s biology is based on his method of division of animal kinds by multiple differentiae. This results in complex clusters of non-subordinate terms, between which Aristotle seeks to establish universal correlations. The form of these, however, does not correspond to that prescribed by his theory of syllogism. Mereological relations between terms are not linear and quantification is far more complex than the distinction between universal and particular propositions. Thus the axiomatisation of Aristotle’s biology requires a tool designed for analysing such (...) complex universal correlations into valid syllogistic premises. Prosleptic-like premises turn out to be the solution outlined by Aristotle. They make it possible to handle both the logic of consequence which translates from and into mereological relations between term clusters, and the complex quantification required by division based on multiple differentiæ, through the instantiation of a variable ideally consisting of indivisible groups of animals. (shrink)

I discuss Aristotle's anomalous terminology in Physics A.1 (involving "universals" and "particulars") and its coherence with Aristotle's notion of scientific demonstration.

This dissertation explores Aristotle’s use of teleology as a principle of explanation, especially as it is used in the natural treatises. Its main purposes are, first, to determine the function, structure, and explanatory power of teleological explanations in four of Aristotle’s natural treatises, that is, in Physica (book II), De Anima, De Partibus Animalium (including the practice in books II-IV), and De Caelo (book II). Its second purpose is to confront these findings about Aristotle’s practice in the natural treatises with (...) the theoretical picture of the structure of teleological explanations gained from Aristotle’s theory of scientific demonstration. For this purpose a new interpretation of Analytica Posteriora II.11 is presented. This study thereby contributes to recent scholarship on the relation between Aristotle’s philosophy of science and his philosophy of nature, while at the same time adding to our knowledge of Aristotle’s notion of teleology in terms of its explanatory merits and limits. (shrink)