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)

The close kinship between humans, chimpanzees, gorillas, and orangutans is a central theme among participants in the debate about human treatment of the other apes. Empathy is probably the single most important determinant of actual human moral behavior, including the treatment of nonhuman animals. Given the applied nature of questions about the treatment of captive apes, it is entirely appropriate that the close relationship between us should be highlighted. But the role that relatedness should play in ethical theory is less (...) clear. To the extent that legal and regulatory challenges to keeping apes in captivity are likely to be based on principles of theory, it is important to understand what roles evolutionary theory can play in deriving such principles. The development of ethically correct policies for captivity of animals will depend on taking into account both species-specific and individual differences in the ways that individuals perceive and conceptualize the spaces in which they live, and the choices with which they are presented. A fully evolutionary approach to cognition, a cognitive ethology, that is not just limited to the great apes or to primates is the best hope we have for understanding such perceptions and conceptions. (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)

The idea of integrating evolutionary biology and psychology has great promise, but one that will be compromised if psychological functions are conceived too abstractly and neuroscience is not allowed to play a contructive role. We argue that the proper integration of neuroscience, psyychology, and evolutionary biology requires a telelogical as opposed to a merely componential analysis of function. A teleological analysis is required in neuroscience itself; we point to traditional and curent research methods in neuroscience, which make critical use of (...) distinctly teleological functional considerations in brain cartography. Only by invoking teleological criteria can researchers distinguish the fruitful ways of identifying brain components from the myriad of possible ways. One likely reason for reluctance to turn to neuroscience is fear of reduction, but we argue that, in the context of a teleological perspective on function, this concern is misplaced. Adducing such theoretical considerations as top-down and bottom-up constraints on neuroscientific and psychological models, as well as existing cases of productive, multidisciplinary cooperation, we argue that integration of neuroscience into psychology and evolutionary biology is likely to be mutually beneficial. We also show how it can be accommodated methodologically within the framework of an interfield theory. (shrink)

I consider some hitherto unexplored examples of teleological language in the sciences. In explicating these examples, I aim to show (a) that such language is not the sole preserve of the biological sciences, and (b) that not all such talk is reducible to the ascription of functions. In chemistry and biochemistry, scientists explaining molecular rearrangements and protein folding talk informally of molecules rearranging “in order to” maximize stability. Evolutionary biologists, meanwhile, often speak of traits evolving “in order to” optimize some (...) fitness-relevant variable. I argue that in all three contexts such locutions are best interpreted as shorthands for more detailed explanations which, were we to spell them out in full, would show that the relevant process would robustly converge towards the same end-point despite variation in initial conditions. This suggests that, in biology, such talk presupposes a substantial form of adaptationism. The upshot is that such shorthands may be more applicable in the physical sciences than the biological. (shrink)

Teleology is the study of ends and goals, things whose existence or occurrence is purposive. Aristotle’s views on teleology are of seminal importance, particularly his views regarding biological functions or purposes. This article surveys core examples of Aristotle’s invocations of teleology; explores philosophically puzzling aspects of teleology (including their normativity and the fact that ends can, apparently, act as causes despite never coming to exist); articulates two of Aristotle’s arguments defending commitment to teleology against critics who attempt to explain nature (...) solely through appeal to nonteleological efficient and material causes; and argues that Aristotle was an ontological realist when it came to teleology: he conceived of ends as an irreducible and ineliminable aspect of the causal structure of reality. Other interpretive controversies are addressed more briefly. (shrink)

The reigning orthodoxy on biological teleology assumes that teleology either must be reduced (or eliminated) or it depends on a supernatural agent. The dominant orthodox sect rejects supernaturalism and eliminitivism, and, given the poverty of competing views has been allowed to become complacent about the adequacy of favored reductivist accounts. These are beset by more serious problems than proponents acknowledge. Moreover, the assumption underlying orthodoxy is false; there is an alternative scientifically and philosophically plausible naturalistic account of teleology. We can (...) share reductivists’ realism about biological teleology, embrace ontological and epistemological naturalism about science as well as science’s the ontic authority yet accept sui generis teleology conceived along ontologically emergentist lines. I sketch one such emergentist account, one that deserves serious consideration if supernaturalism and eliminitivism are as impoverished as reductionists believe. (shrink)

Modern philosophy is, for what appear to be good reasons, uniformly hostile to sui generis final causes. And motivated to develop philosophically and scientifically plausible interpretations, scholars have increasingly offered reductivist and eliminitivist accounts of Aristotle's teleological commitment. This trend in contemporary scholarship is misguided. We have strong grounds to believe Aristotle accepted unreduced sui generis teleology, and reductivist and eliminitivist accounts face insurmountable textual and philosophical difficulties. We offer Aristotelians cold comfort by replacing his apparent view with failed accounts. (...) And so we ought to admit Aristotle’s prima facie commitments and deal with — if not accept — the consequences. (shrink)

Part I [sections 2–4] draws out the conceptual links between modern conceptions of teleology and their Aristotelian predecessor, briefly outlines the mode of functional analysis employed to explicate teleology, and develops the notion of cybernetic organisation in order to distinguish teleonomic and teleomatic systems. Part II is concerned with arriving at a coherent notion of intentional control. Section 5 argues that intentionality is to be understood in terms of the representational properties of cybernetic systems. Following from this, section 6 argues (...) that intentional control needs to be seen as a particular type of relationship between the system and its environment. (shrink)

von Goethe was a daring and wide-ranging biologist as well as a great playwright. His work was a whole: for him, theory and theatre were both based on keen observation of life. Even ‘Faustian’ striving, the blind upward urge of life, can be found in significant details of organisms and their evolution, according to Goethe. Such observations cannot be dismissed as sheer poetry. On the contrary, his teleology provides a broad empirical background for the organismic approach in bio-medical science, while (...) exposing inconsistencies in strict reductionist doctrines. Keywords: anastomosis, anatomical type, dialectic, Faustian, Platonic idealism, serial homology, sociobiology, teleology CiteULike Connotea Del.icio.us What's this? (shrink)

This article outlines in details specific experiments that Galen performed. It explores how his methodology for experimentation was a sophisticated response to the rationalist-empirist debate as it occurred in ancient medicine. -/- .

In Aristotle's biological works, there is an apparent conflict between passages which seem to insist that only hypothetical necessity (anagk ex hypotheses) operates in the sublunary world, and passages in which some biological phenomena are explained as simply (hapls) necessary. Parallel to this textual problem lies the claim that explanations in terms of simple necessity render teleological explanations (in some of which Aristotle puts hypothetical necessity to use) superfluous. I argue that the textual conflict is only apparent, and that Aristotle's (...) notion of coincidental sameness allows him to avoid the superfluity problem. (shrink)

Darwin''s biology was teleological only if the term teleology is defined in a manner that fails to recognize his contribution to the metaphysics and epistemology of modern science. His use of teleological metaphors in a strictly teleonomic context is irrelevant to the meaning of his discourse. The myth of Darwin''s alleged teleology is partly due to misinterpretations of discussions about whether morphology should be a purely formal science. Merely rejecting such notions as special creation and vitalism does not prevent the (...) pernicious effects of teleological reasoning, even at the present time. (shrink)

The article surveys Kant’s treatment of biological teleology in the ’Critique of Judgment’, with special attention to the question of whether the notion of natural teleology is coherent. It argues that our entitlement to regard nature as teleological is not established by the argument of the ’Antinomy’, but rather results from our entitlement to regard the workings of our own cognitive faculties in normative terms. This implies a view of the relation between biological teleology and the representational character of mind (...) which is the reverse of that adopted by naturalistic theorists of mind like Fred Dretske and Ruth Millikan. (shrink)

Though many would prefer to have nothing to do with teleological explanations, it is evident that the writings of biologists and social scientists abound with them, and it is worth paying attention to the conditions under which they may be made responsibly. It emerges that responsible teleological statements would have to be made about instances of recurrent structures having specifiable characteristics, a situation which is patently the case for biology but still unsettled in, say, anthropology. In the final part of (...) the paper it is shown that satisfying this condition provides a basis for formulating general laws of the more orthodox kind. (shrink)

In this paper I examine the role of optimality reasoning in Aristotle’s natural science. By “optimality reasoning” I mean reasoning that appeals to some conception of “what is best” in order to explain why things are the way they are. We are first introduced to this pattern of reasoning in the famous passage at Phaedo 97b8-98a2, where (Plato’s) Socrates invokes “what is best” as a cause (aitia) of things in nature. This passage can be seen as the intellectual ancestor of (...) Aristotle’s own principle, expressed by the famous dictum “nature does nothing in vain but always what is best for the substance from among the possibilities concerning each kind of animal” (Progression of Animals II, 704b12-18). The paper is focused around exploring three questions that arise in connection with Aristotle’s use of this optimality principle: (1) How do we understand the concept of “the best” at work in the principle? (2) How does Aristotle conceive of “the range of possibilities”? And, finally, (3) what role does optimality reasoning play in Aristotle’s natural science? Is it a special form of demonstration in which the optimality principle functions as one of its premises, or is it a heuristic device that helps uncover those causally relevant features of a natural substances that ultimately serve as middle terms in demonstrations? In the final section I return to the comparison between Plato and Aristotle and argue that, while both see the natural world as the product of an optimizing agent and while both see this assumption as licensing a pattern of reasoning that appeals to a certain conception of “the best”, they disagree fundamentally over what the optimization agent is and how it operates. Thus, despite their general agreement, it would be a mistake to think that Aristotle simply took over Plato’s use of optimality reasoning without significant modifications. (shrink)

The main claim in this paper is that because organisms have teleological constitutions, the reduction of biology to physical science is not possible. It is argued that the teleology of organisms is intrinsic and not merely projected onto them. Many organic phenomena are end-oriented and reference to ends is necessary for explaining them. Accounts in terms of functions or goals are appropriate to organic parts and processes. siis is because ends as systemic requirements for survival and health have explanatory significance (...) with respect to the processes that contribute to and constitute them. Reductionism cannot accommodate this sort of higher-level to lower-level explanation and so cannot account for why lower-level phenomena are as they are. Reductionism, it is claimed, is ultimately descriptive and not explanatory because it cannot regard teleological requirements as themselves basic. In seeking to explain them away it forfeits explanatory power. (shrink)

Aristotle's has been the most influential philosophy in the whole history of science. Monte Johnson examines its most controversial aspect: Aristotle's emphasis on the importance of goals and purposes to scientific understanding--his teleology. In some cases this policy has proved deeply flawed, for example in his earth-centric cosmology, or his anthropology purporting to justify slavery and male domination. But in many areas Aristotle's teleology has been successful, and remains influential, for example in adaptationist evolutionary theory, embryology, and genetics. Johnson's book (...) shows also how Aristotle's theory has profound implications for environmental ethics and for the theory of value in general. (shrink)

The Critique of the Power of Judgment (a more accurate rendition of what has hitherto been translated as the Critique of Judgment) is the third of Kant's great critiques following the Critique of Pure Reason and the Critique of Practical Reason. This entirely new translation of Kant's masterpiece follows the principles and high standards of all other volumes in The Cambridge Edition of the Works of Immanuel Kant. This volume includes: for the first time the indispensable first draft of Kant's (...) introduction to the work; the only English edition notes to the many differences between the first (1790) and second (1793) editions of the work; and relevant passages in Kant's anthropology lectures where he elaborated on his aesthetic views. All in all this new edition offers the serious student of Kant a dramatically richer, more complete and more accurate translation. (shrink)

Recent proposals by Taylor, Bennett, Wright and Cohen to identify teleological systems as systems governed by teleological laws and teleological laws as laws of a certain logical form are discussed. Suggested logical forms are treated with both extensional and simple non-extensional models of nomic necessity and shown to generate problematic entailments not derivable from the causal form alone.

This essay examines Kant's idea of organic teleology. The first two sections are devoted to Kant's analysis and justification of teleological conceptions in biology. Both the idea of teleology and Kant's anti-reductionism are derived from basic elements of his critical treatment of the human intellect. The third section discusses the limitations Kant places on accounts of origins in the life world. It is argued that the limitations Kant places on accounts of the origins of species do not follow from his (...) idea of teleology. The final section briefly outlines the fate of the Kantian formulation of teleology in the nineteenth century. (shrink)

Kant’s position on teleology and biology is neither inconsistent nor obsolete; his arguments have some surprising and enduring philosophical strengths. But Kant’s account will appear weak if we muddy the waters by reading him as aiming to defend teleology by appealing to considerations popular in contemporary philosophy. Kant argues for very different conclusions: we can neither know teleological judgments of living beings to be true, nor legitimately explain living beings in teleological terms; such teleological judgment is justified only as a (...) “problematic” guideline in our search for mechanistic explanations. These conclusions are well supported by Kant’s defense of his demanding analysis, according to which teleological judgment literally applies to a complex whole only where teleology truly explains the presence of its parts. (shrink)

Both von Neumann and Wiener were outsiders to biology. Both were inspired by biology and both proposed models and generalizations that proved inspirational for biologists. Around the same time in the 1940s von Neumann developed the notion of self reproducing automata and Wiener suggested an explication of teleology using the notion of negative feedback. These efforts were similar in spirit. Both von Neumann and Wiener used mathematical ideas to attack foundational issues in biology, and the concepts they articulated had lasting (...) effect. But there were significant differences as well. Von Neumann presented a how-possibly model, which sparked interest by mathematicians and computer scientists, while Wiener collaborated more directly with biologists, and his proposal influenced the philosophy of biology. The two cases illustrate different strategies by which mathematicians, the “professional outsiders” of science, can choose to guide their engagement with biological questions and with the biological community, and illustrate different kinds of generalizations that mathematization can contribute to biology. The different strategies employed by von Neumann and Wiener and the types of models they constructed may have affected the fate of von Neumann’s and Wiener’s ideas – as well as the reputation, in biology, of von Neumann and Wiener themselves. (shrink)

It is often claimed that one of Darwin''s chief accomplishments was to provide biology with a non-teleological explanation of adaptation. A number of Darwin''s closest associates, however, and Darwin himself, did not see it that way. In order to assess whether Darwin''s version of evolutionary theory does or does not employ teleological explanation, two of his botanical studies are examined. The result of this examination is that Darwin sees selection explanations of adaptations as teleological explanations. The confusion in the nineteenth (...) century about Darwin''s attitude to teleology is argued to be a result of Darwin''s teleological explanations not conforming to either of the dominant philosophical justifications of teleology at that time. Darwin''s explanatory practices conform well, however, to recent defenses of the teleological character of selection explanations. (shrink)

In Aristotle's teleological view of the world, natural things come to be and are present for the sake of some function or end (for example, wings are present in birds for the sake of flying). Whereas much of recent scholarship has focused on uncovering the (meta-)physical underpinnings of Aristotle's teleology and its contrasts with his notions of chance and necessity, this book examines Aristotle's use of the theory of natural teleology in producing explanations of natural phenomena. Close analyses of Aristotle's (...) natural treatises and his Posterior Analytics show what methods are used for the discovery of functions or ends that figure in teleological explanations, how these explanations are structured, and how well they work in making sense of phenomena. The book will be valuable for all who are interested in Aristotle's natural science, his philosophy of science, and his biology. (shrink)

Despite the renewed interest in Aristotle’s Generation of Animals in recent years, the subject matter of GA V, its preferred mode(s) of explanation, and its place in the treatise as a whole remain misunderstood. Scholars focus on GA I-IV, which explain animal generation in terms of efficient-final causation, but dismiss GA V as a mere appendix, thinking it to concern (a) individual, accidental differences among animals, which are (b) purely materially necessitated, and (c) are only tangentially related to the topics (...) discussed in the earlier books. In this paper, we defend an alternative and more integrated account of GA V by closely examining Aristotle’s methodological introduction in GA V.1 778a16-b19 and his teleological explanation of the differences of teeth in GA V.8. We argue for the unity of both GA V and of GA as a whole and present a more nuanced theory of teleological explanation in Aristotle’s biology. (shrink)

A brief comment on Mark Bedau's critique of naturalist theories of teleology. A positive account is offered in "Teleology and the Product Analogy".

Woodfield's analysis of teleology, though it has many virtues, nevertheless exhibits defects that are by no means peripheral. The acknowledged unity of teleological statements is removed because of the unnoticed difference between something being good and something appearing good. It is removed again because "good" does not have one meaning throughout but means desired in purposive and artifact-function TDs and beneficial in behavioral function and biological function TDs. In addition, the analyses of purposive and artifact-function TDs incorrectly claim that all (...) goals are desired. Further, if "desired" is substituted for "good," those same analyses become incoherent. Finally, the interpretation of "belief" assigned to "S believes B is good" makes unintelligible "S believes B causally contributes to G.". (shrink)

Kant stresses the regulative status of teleological attributions, but sometimes he seems to treat teleology as a constitutive condition for biology. To clarify this issue, the concept of natural purpose and its role for biology are examined. I suggest that the concept serves an identificatory function: it singles out objects as natural purposes, whereby the special science of biology is constituted. This relative constitutivity of teleology is explicated by means of a distinction of levels: on the object level of biological (...) science, teleology is taken as constitutive, though it is merely regulative on the philosophical meta level. This distinction also concerns the place of Aristotelian teleology in Kant: on the object level, the Aristotelian view is accepted, whereas on the meta level, as agnostic stance is taken concerning teleology. (edited). (shrink)

Teleological explanations in evolutionary biology, from Cuvier to the present (and into the future), depend on the metaphor of design for heuristic power and predictive fertility.

In his discussions of dreaming in the Parva Naturalia, Aristotle neither claims nor denies that dreams serve a natural purpose. Modern scholarship generally interprets dreaming as useless and teleologically irrelevant for him. I argue that Aristotle's teleology permits certain types of dream to have a natural role in end-directed processes. Dreams are left-overs from waking experience, but they may, like certain bodily residues, be used by nature, which does ‘nothing in vain’ and makes use of available resources, for the benefit (...) of the beings in which they occur. Contrary to prevalent opinions, Aristotle does not assimilate dreams to sensory illusions and does not hold that they have no interaction with our reasoning capacity. Dreams constitute a special class of the products of phantasia, but this does not prevent them from functioning like other (waking) phantasmata. In Aristotle's view, dreams regularly generate 'natural signs' of diseases and cause waking actions. I show that this preparatory power of dreams, often dismissed or attributed to divine intervention in antiquity, is captured within Aristotle’s natural philosophy, and provides evidence that (some) dreams are (or should be) regarded by him as having a teleological significance. (shrink)

The Dutch biologist C J. van der Klaauw (1893–1972) structuralized the epistemology of oecology using concepts which exceeded the limits of a strictly teleological interpretation of nature. This article relates to his theory of holistic oecology which van der Klaauw formulated departing from a critical confrontation with Kant's teleological view on nature. He substituted this extra-scientifically heuristic maxim by the holistic notion of network-like associations between organisms within a community. The analogous similarities between the organization of individual organisms and communities (...) drawn up by van der Klaauw, merely remained propaedeutics for a genuine holistic oecology, which would only employ epistemological principles specifically referring to the organization of supra-individual communities of organisms. This article discusses the process of structuralizing the theory of holistic oecology by van der Klaauw in his dialogue with Kantian philosophy. (shrink)

We have been accustomed at least since Kant and mainstream history of philosophy to distinguish between the ‘mechanical’ and the ‘teleological’; between a fully mechanistic, quantitative science of Nature exemplified by Newton (or Galileo, or Descartes) and a teleological, qualitative approach to living beings ultimately expressed in the concept of ‘organism’ – a purposive entity, or at least an entity possessed of functions. The beauty of this distinction is that it seems to make intuitive sense and to map onto historical (...) and conceptual constellations in medicine, physiology and the related natural-philosophical discussions on the status of the body versus that of the machine. In this presentation I argue that the distinction between mechanism and teleology is imprecise and flawed, on the basis of a series of examples: the presence of ‘functional’ or ‘purposive’ features even in Cartesian physiology; work such as that of Richard Lower’s on animal respiration; the fact that the model of the ‘body-machine’ is not at all a mechanistic reduction of organismic properties to basic physical properties but on the contrary a way of emphasizing the uniqueness of organic life; and the concept of ‘animal economy’ in vitalist medical theory, which I present as a kind of ‘teleo-mechanistic’ concept of organism (borrowing a term of Timothy Lenoir’s which he used to discuss 19th-century embryology) – neither mechanical nor teleological. (shrink)

INTRODUCTION I What is teleology? If you ever look closely at an ants' nest, you will see an intricate network of pathways and chambers teeming with ...

This paper develops and draws the consequences of an etiological analysis of goal-directedness modeled on one that functions centrally in Charles Taylor's work on action. The author first presents, criticizes, and modifies Taylor's formulation, and then shows his modified formulation accounts easily for much of the fine-structure of teleological concepts and conceptualizations. Throughout, the author is at pains to show that teleological explanations are orthodox from an empiricist's point of view: they require nothing novel methodologically.

Kant -- drawing on his eighteenth-century predecessors -- provided a discerning and powerful characterization of what biologists had to explain in organic form. His difference from the rest is that he opined that was impossible to explain it. Its ’inscrutability’ was intrinsic. The third ’Critique’ essentially proposed the reduction of biology to a kind of prescientific descriptivism, doomed never to attain authentic scientificity. By contrast, for Locke, and ’a fortiori’ for Buffon and his followers, ’intrinsic purposiveness’ was a fact of (...) the matter about concrete biological phenomena; the features of internal self-regulation were hypotheses arising out of actual research practice. The difference comes most vividly to light once we recognize Kant’s distinction of the concept of organism from the concept of life. (edited). (shrink)

It’s recently been argued that biological fitness can’t change over the course of an organism’s life as a result of organisms’ behaviors. However, some characterizations of biological function and biological altruism tacitly or explicitly assume that an effect of a trait can change an organism’s fitness. In the first part of the paper, I explain that the core idea of changing fitness can be understood in terms of conditional probabilities defined over sequences of events in an organism’s life. The result (...) is a notion of “conditional fitness” which is static but which captures intuitions about apparent behavioral effects on fitness. The second part of the paper investigates the possibility of providing a systematic foundation for conditional fitness in terms of spaces of sequences of states of an organism and its environment. I argue that the resulting “organism–environment history conception” helps unify diverse biological perspectives, and may provide part of a metaphysics of natural selection. (shrink)

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)

Recently something close to a consensus about the best way to naturalize the notion of biological function appears to be emerging. Nonetheless, teleological notions in biology remain controversial. In this paper we provide a naturalistic analysis for the notion of natural design. Many authors assume that natural design should be assimilated directly to function. Others find the notion problematic because it suggests that evolution is a directed process. We argue that both of these views are mistaken. Our naturalistic account does (...) not simply equate design with function. We argue that the distinction between function and design is important for understanding the evolution of the physical and behavioral traits of organisms. (shrink)

Philosophers of evolutionary biology favor the so-called etiological concept of function according to which the function of a trait is its evolutionary purpose, defined as the effect for which that trait was favored by natural selection. We term this the selected effect (SE) analysis of function. An alternative account of function was introduced by Robert Cummins in a non-evolutionary and non-purposive context. Cummins''s account has received attention but little support from philosophers of biology. This paper will show that a similar (...) non-purposive concept of function, which we term causal role (CR) function, is crucial to certain research programs in evolutionary biology, and that philosophical criticisms of Cummins''s concept are ineffective in this scientific context. Specifically, we demonstrate that CR functions are a vital and ineliminable part of research in comparative and functional anatomy, and that biological categories used by anatomists are not defined by the application of SE functional analysis. Causal role functions are non-historically defined, but may themselves be used in an historical analysis. Furthermore, we show that a philosophical insistence on the primary of SE functions places practicing biologists in an untenable position, as such functions can rarely be demonstrated (in contrast to CR functions). Biologists who study the form and function of organismal design recognize that it is virtually impossible to identify the past action of selection on any particular structure retrospectively, a requirement for recognizing SE functions. (shrink)

But what are functions? Here, 15 leading scholars of philosophy of psychology and philosophy of biology present new essays on functions.

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 idea of integrating evolutionary biology and psychology has great promise, but one that will be compromised if psychological functions are conceived too abstractly and neuroscience is not allowed to play a contructive role. We argue that the proper integration of neuroscience, psyychology, and evolutionary biology requires a telelogical as opposed to a merely componential analysis of function. A teleological analysis is required in neuroscience itself; we point to traditional and curent research methods in neuroscience, which make critical use of (...) distinctly teleological functional considerations in brain cartography. Only by invoking teleological criteria can researchers distinguish the fruitful ways of identifying brain components from the myriad of possible ways. One likely reason for reluctance to turn to neuroscience is fear of reduction, but we argue that, in the context of a teleological perspective on function, this concern is misplaced. Adducing such theoretical considerations as top-down and bottom-up constraints on neuroscientific and psychological models, as well as existing cases of productive, multidisciplinary cooperation, we argue that integration of neuroscience into psychology and evolutionary biology is likely to be mutually beneficial. We also show how it can be accommodated methodologically within the framework of an interfield theory. (shrink)

The survival enhancing propensity (SEP) account has a crucial role to play in the analysis of proper function. However, a central feature of the account, its specification of the proper environment to which functions are relativized, is seriously underdeveloped. In this paper, I argue that existent accounts of proper environment fail because they either allow too many or too few characters to count as proper functions. While SEP accounts retain their promise, they are unworkable because of their inability to specify (...) this important feature. However, I suggest that this problem can be overcome by the application of a new strategy for specifying proper environment that is grounded in the operation of natural selection and I conclude by offering a first approximation of such an account. (shrink)

I consider some hitherto unexplored examples of teleological language in the sciences. In explicating these examples, I aim to show (a) that such language is not the sole preserve of the biological sciences, and (b) that not all such talk is reducible to the ascription of functions. In chemistry and biochemistry, scientists explaining molecular rearrangements and protein folding talk informally of molecules rearranging “in order to” maximize stability. Evolutionary biologists, meanwhile, often speak of traits evolving “in order to” optimize some (...) fitness-relevant variable. I argue that in all three contexts such locutions are best interpreted as shorthands for more detailed explanations which, were we to spell them out in full, would show that the relevant process would robustly converge towards the same end-point despite variation in initial conditions. This suggests that, in biology, such talk presupposes a substantial form of adaptationism. The upshot is that such shorthands may be more applicable in the physical sciences than the biological. (shrink)

The reigning orthodoxy on biological teleology assumes that teleology either must be reduced (or eliminated) or it depends on a supernatural agent. The dominant orthodox sect rejects supernaturalism and eliminitivism, and, given the poverty of competing views has been allowed to become complacent about the adequacy of favored reductivist accounts. These are beset by more serious problems than proponents acknowledge. Moreover, the assumption underlying orthodoxy is false; there is an alternative scientifically and philosophically plausible naturalistic account of teleology. We can (...) share reductivists’ realism about biological teleology, embrace ontological and epistemological naturalism about science as well as science’s the ontic authority yet accept sui generis teleology conceived along ontologically emergentist lines. I sketch one such emergentist account, one that deserves serious consideration if supernaturalism and eliminitivism are as impoverished as reductionists believe. (shrink)

In this paper we consider the emerging position in metaphysics that artifact functions characterize real kinds of artifacts. We analyze how it can circumvent an objection by David Wiggins (Sameness and substance renewed, 2001, 87) and then argue that this position, in comparison to expert judgments, amounts to an interesting fine-grained metaphysics: taking artifact functions as (part of the) essences of artifacts leads to distinctions between principles of activity of artifacts that experts in technology have not yet made. We show, (...) moreover, that our argument holds not only in the artifactual realm but also in biology: taking biological functions as (part of the) essences of organs leads to distinctions between principles of activity of organs that biological experts have not yet made. We run our argument on the basis of analyses of artifact and biological functions as developed in philosophy of technology and of biology, thus importing results obtained outside of metaphysics into the debate on ontological realism. In return, our argument shows that a position in metaphysics provides experts reason for trying to detect differences between principles of activities of artifacts and organs that have not been detected so far. (shrink)

Part I [sections 2–4] draws out the conceptual links between modern conceptions of teleology and their Aristotelian predecessor, briefly outlines the mode of functional analysis employed to explicate teleology, and develops the notion of cybernetic organisation in order to distinguish teleonomic and teleomatic systems. Part II is concerned with arriving at a coherent notion of intentional control. Section 5 argues that intentionality is to be understood in terms of the representational properties of cybernetic systems. Following from this, section 6 argues (...) that intentional control needs to be seen as a particular type of relationship between the system and its environment. (shrink)

Neo-teleology is the two part thesis that, e.g., (i) we have hearts because of what hearts are for: Hearts are for blood circulation, not the production of a pulse, so hearts are there--animals have them--because their function is to circulate the blood, and (ii) that (i) is explained by natural selection: traits spread through populations because of their functions. This paper attacks this popular doctrine. The presence of a biological trait or structure is not explained by appeal to its function. (...) To suppose otherwise is to trivialize natural selection. (shrink)

A persistent boast of the historical approach to functions is that functional properties are normative. The claim is that a token trait retains its functional status even when it is defective, diseased, or damaged and consequently unable to perform the relevant task. This is because historical functional categories are defined in terms of some sort of historical success -- success in natural selection, typically -- which imposes a norm upon the performance of descendent tokens. Descendents thus are supposed to perform (...) the associated task even when they cannot. The conceit, then, is that malfunctions are explicable in terms of historical success. The aim of this paper is to challenge this conceit. My thesis is that the historical approach to functions lacks the resources with which to account for the possibility of malfunctions. If functional types are defined in terms of historical success, then tokens that lack the defining property due to defect, and tokens that have lost the defining property due to disease or damage, are excluded from the functional category. Historically based malfunctions, in consequence, are impossible. The historical approach is no better than its non-historical competitors in accounting for the presumed normativity of functional properties. (shrink)

I defend and revise the systematic account of normative functions (teleofunctions), as recently developed by Gerhard Schlosser and by W. D. Christensen and M. H. Bickhard. This account proposes that teleofunctions are had by structures that play certain kinds of roles in complex systems. This theory is an alternative to the historical etiological account of teleofunctions, developed by Ruth Millikan and others. The historical etiological account is susceptible to a general ontological problem that has been under-appreciated, and that offers important (...) reasons to adopt the systematic account. However, the systematic account must be revised to allow for two distinct kinds of teleofunctions in order to avoid another ontological problem. (shrink)

A meaningful distinction can be made between functions and mere effects in biological systems without resorting to teleological arguments: (i) biological systems must cope with a multitude of problems or they will cease to exist; (ii) the solutions to these problems invariably depend on circular causal chains (“feedback loops”); and (iii) biological functions are attributes of elements in biological systems that have an effect which, by contributing to the correcting behavior of a feedback control system, assists in solving a biological (...) problem. The analysis is applied to several biological systems. The proposed solution is discussed primarily in its relation to two popular approaches to the concept of biological function, i.e., the “causal role accounts” and the “selected effect accounts”. (shrink)

There is an argument that has recently been deployed in favor of thinking that the mind is mostly (or even exclusively) composed of cognitive modules; an argument that draws from some ideas and concepts of evolutionary and of developmental biology. In a nutshell, the argument concludes that a mind that is massively composed of cognitive mechanisms that are cognitively modular (henceforth, c-modular) is more evolvable than a mind that is not c-modular (or that is scarcely c-modular), since a cognitive mechanism (...) that is c-modular is likely to be biologically modular (henceforth, b-modular), and b-modular characters are more evolvable (e.g., Sperber 2002, Carruthers 2005). In evolutionary biology, the evolvability of a character in an organism is understood as the “organism’s capacity to facilitate the generation of non-lethal selectable phenotypic variation from random mutation” with respect to that character. Here I will argue that the notion of cognitive modularity needed to make this argument plausible will have to be understood in terms of the biological notion of variational independence; that is, it will have to be understood in such a way that a cognitive feature is c-modular only if few or no other morphological changes (cognitive and not) are significantly correlated with variations of that feature arising in members of the relevant population. I will also argue that all –except for (possibly) one—of the connotations contained in a cluster of notions of cognitive modularity widely accepted in some of the mainstream currents of thought in classical cognitive science, are simply irrelevant to the argument. In order to argue for this, I will have to examine the question as to whether there are any strong theoretical connections between (1) those connotations and (2) notions of modularity accepted in biology, specially in evolutionary and in developmental biology, that are thought to be most relevant to arguments to the effect that biological modularity enhances evolvability. (shrink)