Teleology and Function

In this paper I defend a teleological explanation of normativity, i. e., I argue that what an organism is supposed to do is determined by its etiological function. In particular, I present a teleological account of the normativity that arises in learning processes, and I defend it from some objections.

The advent of contemporary evolutionary theory ushered in the eventual decline of Aristotelian Essentialism (Æ) – for it is widely assumed that essence does not, and cannot have any proper place in the age of evolution. This paper argues that this assumption is a mistake: if Æ can be suitably evolved, it need not face extinction. In it, I claim that if that theory’s fundamental ontology consists of dispositional properties, and if its characteristic metaphysical machinery is interpreted within the framework (...) of contemporary evolutionary developmental biology, an evolved essentialism is available. The reformulated theory of Æ offered in this paper not only fails to fall prey to the typical collection of criticisms, but is also independently both theoretically and empirically plausible. The paper contends that, properly understood, essence belongs in the age of evolution. (shrink)

One of the most pervasive and persistent questions in philosophy is the relationship between the natural sciences and traditional philosophical categories such as metaphysics, epistemology and the mind. _Contemporary Philosophical Naturalism and Its Implications _is a unique and valuable contribution to the literature on this issue. It brings together a remarkable collection of highly regarded experts in the field along with some young theorists providing a fresh perspective. This book is noteworthy for bringing together committed philosophical naturalists, thus diverging from (...) the growing trend towards anti-naturalism. The book consists of four sections: the first deals with the metaphysical implications of naturalism, in which two contributors present radically different perspectives. The second attempts to reconcile reasons and forward-looking goals with blind Darwinian natural selection. The third tackles various problems in epistemology, ranging from meaning to natural kinds to concept learning. The final section includes three papers each addressing a specific feature of the human mind: its uniqueness, its representational capacity, and its morality. In this way the book explores the important implications of the post-Darwinian scientific world-view. (shrink)

Normative characterization is a commonplace feature of biological and cognitive explanation. Such language seems to commit the biological and cognitive sciences to the existence of natural norms, but it is also difficult to understand how such normativity fits into a natural world of physical causes and forces. I propose to map normativity onto systems stabilized by counteractive constraints. Such a mapping, I believe, can explain normativity’s causal-explanatory role in biological and cognitive inquiry. The common approach in the literature is to (...) derive an account of natural normativity by way of a particular theory of function. I avoid that approach here and attempt to address directly the sort of physical systems that might satisfy naturalizing criteria for normativity. This has the advantages, I think, of allowing an account of normativity without first having to decide the correct theory of function as well as allowing for the theoretical possibility that normative and functional explanation might come apart within empirical explanation. (shrink)

Living systems are characterized as self-generating and self-maintaining systems. This type of characterization allows integration of a wide variety of detailed knowledge in biology.The paper clarifies general notions such as processes, systems, and interactions. Basic properties of self-generating systems, i.e. systems which produce their own parts and hence themselves, are discussed and exemplified. This makes possible a clear distinction between living beings and ordinary machines. Stronger conditions are summarized under the concept of self-maintenance as an almost unique character of living (...) systems. Finally, we discuss the far-reaching consequences that the principles of self-generation and self-maintenance have for the organization, structure, function, and evolution of single- and multi-cellular organisms. (shrink)

This chapter examines the mechanistic psychology of Descartes in the _Passions_, while also drawing on the _Treatise on Man_. It develops the idea of a Cartesian “psychology” that relies on purely bodily mechanisms by showing that he explained some behaviorally appropriate responses through bodily mechanisms alone and that he envisioned the tailoring of such responses to environmental circumstances through a purely corporeal “memory.” An animal’s adjustment of behavior as caused by recurring patterns of sensory stimulation falls under the notion of (...) “learning,” behavioristically conceived. Indeed, Descartes’s animal-machine hypothesis may well be a distant ancestor to Watsonian behaviorism, via T. H. Huxley (1884). The final two sections of the chapter take stock of what psychological capacities Descartes ascribed to mind, body, or both, and consider those capacities that we might now plausibly construe as being explicable by nonmentalistic mechanisms as opposed to those that at present remain unreducedly mentalistic. -/- This chapter derives from a lecture delivered at the University of King's College (Halifax, Nova Scotia) as part of a year-long series on Descartes and the Modern. The lecture series was co-sponsored by the programs in History of Science and Early Modern and Contemporary Studies. (shrink)

The purpose of this paper is to present a general mechanistic framework for analyzing causal representational claims, and offer a way to distinguish genuinely representational explanations from those that invoke representations for honorific purposes. It is usually agreed that rats are capable of navigation because they maintain a cognitive map of their environment. Exactly how and why their neural states give rise to mental representations is a matter of an ongoing debate. I will show that anticipatory mechanisms involved in rats’ (...) evaluation of possible routes give rise to satisfaction conditions of contents, and this is why they are representationally relevant for explaining and predicting rats’ behavior. I argue that a naturalistic account of satisfaction conditions of contents answers the most important objections of antirepresentationalists. (shrink)

Of the three traditional theories of truth, correspondence, coherence, and pragmatic, Peirce contributed the third. Truth, on this account, is what we will all agree to in the "long run." The long run is a form of teleology, but it is located outside of the present structure of inquiry, and draws inquiry toward a futuristic stasis. This account of teleology has been criticized by W. V. O. Quine, Rollin Workman, Michael Williams, Richard Rorty, Nicholas Rescher, and Paul Weiss. We are (...) no less critical of this account of teleology, but we do not believe that the entire idea of a teleology of inquiry in which truth is evolved is without merit. ;Our approach is to acknowledge that Peirce based his theory of the long run on a substance ontology, which he later discarded in favor of a process ontology. This process ontology is internally teleological, rather than externally teleological. By applying that internally teleological process ontology back into the early structural process of inquiry, we will emerge with an entirely new and internally teleological theory of inquiry. On this new account, there is a teleological dynamic evolving even through the various modes of logic, i.e., deduction , induction, and abduction. Each of these modes is evolving teleologically as an extension of Peirce's evolutionary cosmology. The new teleology of inquiry is the internally dynamic thrust toward truth in logical thinking. ;After developing this new teleology of inquiry, we will return to the secondary literature and give our own unique response on the evolution of mind and truth. (shrink)

Offering a new approach to scientific explanation, this book focuses initially on the explaining act itself.

Teleological terms such as "function" and "design" appear frequently in the biological sciences. Examples of teleological claims include: A (biological) function of stotting by antelopes is to communicate to predators that they have been detected. Eagles' wings are (naturally) designed for soaring. Teleological notions were commonly associated with the pre-Darwinian view that the biological realm provides evidence of conscious design by a supernatural creator. Even after creationist viewpoints were rejected by most biologists there remained various grounds for concern about the (...) role of teleology in biology, including whether such terms are: 1. vitalistic (positing some special "life-force"); 2. requiring backwards causation (because future outcomes explain present traits); 3. incompatible with mechanistic explanation (because of 1 and 2); 4. mentalistic (attributing the action of mind where there is none); 5. empirically untestable (for all the above reasons). Opinions divide over whether Darwin's theory of evolution provides a means of eliminating teleology from biology, or whether it provides a naturalistic account of the role of teleological notions in the science. Many contemporary biologists and philosophers of biology believe that teleological notions are a distinctive and ineliminable feature of biological explanations but that it is possible to provide a naturalistic account of their role that avoids the concerns above. Terminological issues sometimes serve to obscure some widely-accepted distinctions. (shrink)

There is an autonomy in life that contrasts with physico-chemical processes. It has its own biological causality. Each type of life has its teleological as well as causal side. The researches of biology should therefore be devoted to causality and teleology simultaneously, and not to one or other exclusively. Causal and teleological interpretations must not however be confused. Every life is a whole; in the organism all vital processes are integrated, and causality and teleology inherent in the whole. For the (...) concept of teleology we can substitute that of sense. The sense of vital processes transcends the individual organism. Man must also be considered as a whole: physical and psychical are different modes of expression of an organism which functions as a whole.Comparée aux phénomènes physico-chimiques, la vie possède une autonomie; elle obéit à sa propre causalité biologique. Tout phénomène de vie présente non seulement un aspect causal, mais encore un aspect final; aussi le devoir de la biologie n'est-il jamais de diriger ses recherches uniquement en raison de la causalité ou uniquement en raison de la finalité, mais toujours simultanément en raison de l'une et de l'autre. Il ne faut pas confondre l'interprétation tirée de la causalité et celle tirée de la finalité. Chaque vie forme un tout; tous les phénomènes de la vie se produisent intégrés dans l'organisme; causalité et finalité appartiennent à la totalité de l'organisme. L'idée de la finalité peut se remplacer par celle du „sens”; le sens des phénomènes de la vie dans l'organisme n'est pas seulement individuel, mais toujours aussi supraindividuel. L'homme doit pareillement être considéré comme un tout; le physique et le psychique sont deux formes différentes d'expression de l'organisme humain, qui se comporte comme une totalité. (shrink)

Agnes Arber's international reputation is due in part to her exceptional ability to interpret the German tradition of scholarship for the English-speaking world. The Mind and the Eye is an erudite book, revealing its author's familiarity with philosophy from Plato and Aristotle through Aquinas to Kant and Hegel; but it is not dull, because the quiet enthusiasm of the author shines through. In this book she turns from the work of a specialist in one science to those wider questions which (...) any scientist must ask at intervals. What, in short, is the relationship between the eye that sees and the mind that weighs and pronounces? An important feature of this Cambridge Science Classics reissue is the introduction provided by Professor P. R. Bell, who as a Cambridge botany student at the time that Agnes Arber was writing The Natural Philosopby of Plant Form, is uniquely able to set The Mind and the Eye in the context of contemporary biological research. (shrink)

AristotleÕs central argument for teleologyÑthough not necessarily his conclusionÑis repeated in the teleological arguments of Isaac Newton, Immanuel Kant, William Paley, and Charles Darwin. To appreciate AristotleÕs argument and its influence I assert, first, that AristotleÕs naturalistic teleology must be distinguished from PlatoÕs anthropomorphic one; second, the form of AristotleÕs arguments for teleology should be read as instances of inferences to the best explanation. On my reading, then, both NewtonÕs and PaleyÕs teleological arguments are Aristotelian while their conclusions are Platonic. (...) Kant and DarwinÕs arguments are likewise Aristotelian while their conclusions are unique. (shrink)

Teleology in biology is making headline news in the United States. Conservative Christians are utilizing a teleological argument for the existence of a supremely intelligent designer to justify legislation calling for the teaching of "intelligent design" (ID) in public schools. Teleological arguments of one form or another have been around since Antiquity. The contemporary argument from intelligent design varies little from William Paley's argument written in 1802. Both argue that nature exhibits too much complexity to be explained by 'mindless' natural (...) forces alone. We need to postulate the existence of an intelligent designer, a creator with forethought and purpose. The inference to an intelligent creator harkens back to Plato’s teleological argument for the order of the cosmos. Plato’s demiurge is a creator that imposes order on the cosmos. Yet, as we shall see when we analyze the distinctly biological form of the more contemporary teleological arguments we will find remanants of Aristotle’s distinctive argument from functional arrangement, but without his distinctive form of telos which is unconscious and immanent rather than intelligent and creative from on high. The aim of this article is to survey various teleological arguments since Antiquity. Since a variant on Paley's argument—ID—is getting so much recent press I will start with a discussion on the nature of Paley’s teleology. (shrink)

Many physicians, anatomists and natural philosophers engaged in attempts to map the seat of the soul during the so-called Scientific Revolution of the European seventeenth century. The history of these efforts needs to be told in light of the puzzlement bred by today's strides in the neurological sciences. The accounts discussed here, most centrally by Nicolaus Steno, Claude Perrault and Thomas Willis, betray the acknowledgement that a gap remained between observable form, on the one hand, and motor and sensory functions, (...) on the other. Observation yielded information about form, but did not guarantee a constant correlation with presumed function, while the mechanisms of sense and movement did not fit in with accounts of action and cognition whose purpose was to place the connection between active body and willful, conscious soul onto a descriptive rather than metaphysical plane. Teleology was now no longer a helpful tool in the disciplines of anatomy and physiology; the consequences of this are still with us. (shrink)

This work is an examination of the metaphysical presuppositions involved in the science of organic form. Taking the dichotomy of structuralism versus functionalism in nineteenth century biology as the central subject of my study, I explore a network of unquestioned premises and isolate areas where empirical research programs and underlying metaphysical commitments both inform and hinder each other. ;I begin with the Cuvier-Geoffroy debate of 1830--a debate that clearly articulates the tensions between structuralist and functionalist approaches to organic form. On (...) the side of functionalism, I am led to confront the rich concept of teleological causality. The concept of teleology, frequently taken to be semantically univocal, in fact unfolds into a cluster of related notions. I begin to demarcate significant differences between "intentional," "heuristic," "cosmic," and "organismic" teleology. On the side of structuralism, I set out to unearth the presuppositions of materialist versus idealist conceptions of structure--showing where naturalists have been both liberated and enslaved by their respective metaphysical commitments. With the basic divisions between structuralist and functionalist drawn, I set out to trace the dichotomy through the paradigm shift from fixism to transformism. ;In Darwin's system the structural/functional tensions become synthesized into complementary principles of causality. Here I explore the underlying presuppositional shifts which enabled Darwin to harmonize the previously intractable oppositions. These shifts include: rethinking teleology without "design," rethinking the archetype as real progenitor, and adopting a pluralistic perspective regarding causal mechanisms. ;The relative success of Darwin's appropriation of structuralism and functionalism leads to a discussion of the dichotomous character of the central subject itself. I argue that at the root of the dichotomous characterization of structure and function lies an impoverished understanding of teleology. I then offer "organicist" teleology as a powerful alternative to the French-Anglo tradition of "intentional" teleology. Presupposing the alternative teleology forms a challenge to the way in which French-Anglo naturalists have understood structural and functional relations. Together with Darwin's causal pluralism, a richer notion of teleology provides a different set of metaphysical assumptions and leads to an alternative model for empirical research programs. (shrink)

Knives, birds' wings, and mountain slopes are used for certain purposes: cutting, flying, and climbing. A bird's wings have in common with knives that they have been 'designed' for the purpose they serve, which purpose accounts for their existence, whereas mountain slopes have come about by geological processes independently of their uses for climbing. A bird's wings differ from a knife in that they have not been designed or produced by any conscious agent; rather, the wings, like the slopes, are (...) outcomes of natural processes without any intentional causation. Evolutionary biologists use teleological language and teleological explanations. I propose that this use is appropriate, because teleological explanations are hypotheses that can be subject to empirical testing. The distinctiveness of teleological hypotheses is that they account for the existence of a feature in terms of the function it serves; for example, wings have evolved and persist because flying is beneficial to birds by increasing their chances of surviving and reproducing. Features of organisms that are explained with teleological hypotheses include structures, such as wings; processes, such as development from egg to adult; and behaviours, such as nest building. A proximate explanation of these features is the function they serve; an ultimate explanation that they all share is their contribution to the reproductive fitness of the organisms. I distinguish several kinds of teleological explanations, such as natural and artificial, as well as bounded and unbounded, some of which but not others apply to biological explanations. (shrink)

The ultimate source of explanation in biology is the principle of natural selection. Natural selection means differential reproduction of genes and gene combinations. It is a mechanistic process which accounts for the existence in living organisms of end-directed structures and processes. It is argued that teleological explanations in biology are not only acceptable but indeed indispensable. There are at least three categories of biological phenomena where teleological explanations are appropriate.

The view of teleology sketched in the above remarks seems to me to offer a piece of candy to both the critics and guardians of teleology. The critics want to defend against a number of things: the importation of unverifiable theological or metaphysical doctrines into the sciences; the idea that goals somehow act in favor of their won realization; and the view that biological systems require for their study concepts and patterns of explanation unlike anything employed in the physical sciences. (...) An important part of their defense has been the contention that teleological language can be eliminated without loss from the sciences. I have argued that this is true: any phenomenon that can be described in teleological language can be described otherwise.On the other hand, eliminability does not mean translatability. I have suggested—I do not see how to prove it—that the teleological character of a sentence is so fundamental that it would be preserved under translation. Teleological character is conferred on a sentence by the manner in which it fits into a conceptual scheme designed for the description of certain classes of systems possessing net-like organization. The elimination of teleological language thus involves a conceptual shift, and involves a different method of classifying the elements of a system.The guardians of teleology—myself among them—have insisted that teleological language is perfectly legitimate. This conclusion is plain if my account of “appropriateness” is correct. Indeed, the development of conceptual schemes which render functional ascriptions appropriate is seen to be just a special case of a general scientific procedure: the designing of languages aimed at bringing to light those causal relations which are most interesting to us. (shrink)