This is a short overview of the biological functions debate in philosophy. While it was fairly comprehensive when it was written, my short book ​A Critical Overview of Biological Functions has largely supplanted it as a definitive and up-to-date overview of the debate, both because the book takes into account new developments since then, and because the length of the book allowed me to go into substantially more detail about existing views.

Classifying is a fundamental operation in the acquisition of knowledge. Taxonomic theory can help students of cognition, evolutionary psychology, ethology, anatomy, and sociobiology to avoid serious mistakes, both practical and theoretical. More positively, it helps in generating hypotheses useful to a wide range of disciplines. Composite wholes, such as species and societies, are “individuals” in the logical sense, and should not be treated as if they were classes. A group of analogous features is a natural kind, but a group of (...) homologous features is not. Imposing hypotheses justified only on the basis of nominalist, realist, phenomenalist, or conceptualist metaphysics upon the neurophysiology of organisms or upon the causes of behavior exemplifies the “psychologist's fallacy” of William James. Levels should be distinguished from their members and from classes of levels, and the ontological status of entities ranked at levels should be made clear. It is important not to confuse such categories as substance and process with one another. Several genetical terms, such as “gene” and chromosome,” are even more equivocal than has been realized. Discussions about units of selection, behavior, and thinking suffer from the ambiguity of a “unit of” an entity. An important source of misunderstanding about natural selection is the habit of treating it as an “agent”: in an important sense, natural selection does not “act” at all. (shrink)

The purpose of this essay is to defend the deductive-nomological model of explanation against a number of criticisms that have been made of it. It has traditionally been thought that scientific explanations were causal and that scientific explanations involved deduction from laws. In recent years, however, this three-fold identity has been challenged: there are, it is argued, causal explanations that are not scientific, scientific explanations that are not deductive, deductions from laws that are neither causal explanations nor scientific explanations, and (...) causal explanations that involve no deductions from laws. The aim of the present essay is to defend the traditional identities, and to show that the more recent attempts at invalidating them fail in their object. More specifically, this essay argues that a Humean version of the deductive-nomological model of explanation can be defended as the correct account of scientific explanation of individual facts and processes, and as the correct account of causal explanations of individual facts and processes. The deductive-nomological model holds that to explain an event E, say that a is G, one must find some initial conditions C, say that a is F, and a law or theory T such that T and C jointly entail E, and both are essential to the deduction. (shrink)

This volume is a collection of some of the most important philosophical papers by Peter Gärdenfors. Spanning a period of more than 20 years of his research, they cover a wide ground of topics, from early works on decision theory, belief revision and nonmonotonic logic to more recent work on conceptual spaces, inductive reasoning, semantics and the evolutions of thinking. Many of the papers have only been published in places that are difficult to access. The common theme of all the (...) papers is the dynamics of thought. Several of the papers have become minor classics and the volume bears witness of the wide scope of Gärdenfors’ research and of his crisp and often witty style of writing. The volume will be of interest to researchers in philosophy and other cognitive sciences. (shrink)

This paper reviews the debate on the notion of biological function and on functional explanation as this takes place in philosophy. It describes the different perspectives, issues, intuitions, theories and arguments that have emerged. The author shows that the debate has been too heavily influenced by the concerns of a naturalistic philosophy of mind and argues that in order to improve our understanding of biology the attention should be shifted from the study of intuitions to the study of the actual (...) practice of biological inquiry. (shrink)

This paper is concerned with reasonings that purport to explain why certain organisms have certain traits by showing that their actual design is better than contrasting designs. Biologists call such reasonings 'functional explanations'. To avoid confusion with other uses of that phrase, I call them 'design explanations'. This paper discusses the structure of design explanations and how they contribute to scientific understanding. Design explanations are contrastive and often compare real organisms to hypothetical organisms that cannot possibly exist. They are not (...) causal but appeal to functional dependencies between an organism's different traits. These explanations point out that because an organism has certain traits, it cannot be alive if the trait to be explained were replaced by a specified alternative. They can be understood from a mechanistic point of view as revealing the constraints on what mechanisms can be alive. (shrink)

Les critiques actuelles des diagnostics psychiatriques, qu’elles viennent des antipsychiatres, des béhavioristes, des constructionnistes sociaux, des szasziens et des foucaldiens, rejettent généralement l’idée que le concept de trouble mental est légitime du point de vue médical, ne laissant donc aucun argument solide à partir duquel il soit possible de mener une critique constructive et d’établir un dialogue avec la psychiatrie. Ces positions ne réussissent également pas à expliquer les fortes intuitions populaires qui permettent aux gens de distinguer les troubles psychologiques (...) des autres conditions psychologiques négatives. Selon l’analyse de la dysfonction préjudiciable présentée dans cet article, un trouble mental est une condition : 1) préjudiciable, un concept évaluatif basé sur des valeurs sociales ; et 2) causée par une dysfonction psychologique, un concept factuel se rapportant à un mécanisme psychologique qui accomplit une fonction pour laquelle il a été biologiquement conçu . L’analyse DP est ainsi une position hybride qui requiert à la fois que des critères évaluatifs et factuels soient satisfaits pour garantir l’attribution d’un trouble. Nous argumentons que l’analyse DP réussit admirablement à expliquer les jugements intuitifs quant à ce qui est un trouble et à ce qui en n’est pas. La composante factuelle permet également de critiquer le critère diagnostique du DSM, ce que nous ferons à l’aide de plusieurs exemples . Ces critiques déterminent où le DSM a dévié de ses propres hypothèses et ainsi considéré comme des troubles ce qui n’en est pas. Elles expliquent également pourquoi les tentatives du DSM de remédier au problème en introduisant le critère du « cliniquement significatif » échouent.Current antipsychiatric, behaviorist, social-constructivist, Szaszian, and Foucauldian critiques of psychiatric diagnosis generally reject mental disorder as a medically legitimate concept, thus allowing no place to stand from which to mount a constructive critique and dialogue with psychiatry. These views also fail to explain the robust folk intuitions by which people distinguish psychological disorders from other negative psychological conditions. According to the harmful dysfunction analysis presented in this paper, a mental disorder is condition that is harmful, a value concept judged by social values ; and caused by a psychological dysfunction, a factual concept referring to failure of a psychological mechanism to perform a function for which it is biologically designed . The HD analysis is thus a hybrid account that requires both value and factual criteria to be satisfied before attribution of disorder is warranted. It is argued that the HD analysis has considerable success in explaining intuitive judgments about disorder versus non-disorder. The factual component also allows for a critique of DSM diagnostic criteria for specific categories, with several examples discussed. These critiques identify where the DSM has deviated from its own deepest assumptions and labeled non-disorders as disorders, and why the DSM’s own attempts to fix the problem, as with the «clinical significance» criterion, do not succeed. (shrink)

Many think that evolutionary biology has relevance to ethics, but how far that relevance extends is a matter of debate. It is easy to show that pop sociobiological approaches to ethics all commit some type of naturalistic fallacy. More sophisticated attempts, like Donald Campbell's, or, more recently, Robert Richards', are not so easily refuted, but I will show that they too reason fallaciously from facts to values. What remains is the possibility of an evolutionary search for human nature. Unfortunately, evolutionary (...) theory itself seems to imply that the quest for human nature will not be very promising. As far as there is such a thing as human nature, we will have to know it before we can meaningfully talk about its evolution. Anthropological data suggest that we differ widely in our normative judgments. And even where we seem to agree, there is good reason to doubt that we really do so. (shrink)

Recent interest in the social and ethical aspects of biology raises the question of the disciplinary status of the study of these aspects of biology . In the traditional interpretations of theoretical biology the social and ethical aspects are usually not explicitly mentioned. In this article arguments are given for inclusion of the study of these aspects of biology within a broadened conception of theoretical biology.

Something is wrong with current discussions about theory reduction. The question of whether higher level theories are reducible to lower level theories cannot be posed in a sensible way if methodological principles that are needed to evaluate scientific theories are disregarded. If this is recognized, the problem looses much of its alleged importance.

La littérature épistémologique actuelle véhicule une image caricaturale de la philosophie popperienne de la biologie. En effet, on suppose sa position suffisamment claire et univoque pour pouvoir se résumer succinctement en quelques lignes. De plus, on la suppose toujours la même tout au long de l'évolution intellectuelle de son auteur. Dans le présent article, nous voudrions contester ces deux suppositions car sa pensée est non seulement vague et ambiguë mais encore elle est loin d'être constante et homogène. De ce fait, (...) nous entendons corriger une conception eronnée et généralement répandue de sa philosophie de la biologie.Popper's philosophy of biology is generally miscon- ceived. It is supposed to be homogeneous and clearly statable in a few lines. Worse, Popper's changes of mind on these questions are not even taken into account. In this article, we will try to show why these suppositions are erroneous and how they hinder us from forming a more adequate idea of his philosophy of biology. (shrink)

Revaluation of the problem of natural teleology seems an important precondition for elucidating our environmental crisis and for formulating an 'econological ethics', because it calls for a recognition of an intrinsic value in nature and organisms. Therefore, it is necessary to show that the concept of natural teleology is not in contradiction with scientific theories, in particular not with the theory of evolution. In this paper I shall argue that there is a fundamental misunderstanding about the concepts of teleology and (...) chance in modern thinking. This as a result of a radical transformation of the Aristotelian concept of teleology by Christian theologians during the Middle Ages. This confusion resulted in the rejection of teleology from evolution and in an exaggeration of the role of chance. However, not a solution for the problem of teleology is given here, but only an attempt to prove that neither the fossil-record, nor the role of chance in evolution can give adequate arguments for the negation of teleology in evolution. That is not to say that, therefore there exists teleology in evolution, but the problem of teleology in nature cannot, be solved by the scientific theory of evolution, but only be elucidated by philosophical analysis. At the end of the paper it is argued that teleology must be rather presupposed in evolution. (shrink)

In this paper I propose to examine, and in part revive, a time-honoured perspective to inquiry in general and scientific explanation in particular. The perspective is to view inquiry as a search for answers to questions. If there is anything that deserves to be called a working scientist's view of his or her daily work, it surely is that he or she phrases questions and attempts to find satisfactory answers to them.

The beginning of any rigorous interdisciplinary study, as Hegel and later Marx predicted, is going to be the occasion for opposition, contradiction, negation and mediation. Sociobiology is not a mature field (thesis). Kitcher's critical work entitledVaulting Ambition seeks to at once expose the failings of this field (serving as antithesis) while simultaneously defining the requirements for more mature, and thus epistemologically satisfying, sociobiological explanations (synthesis). The sociobiological research agenda is thus implicitly given a green light provided certain methodological precautions are (...) taken into consideration. Confucius believed that under these circumstances the only way to restore order would be so to arrange affairs that the Emperor would continue to be Emperor, the nobles to be nobles, the ministers to be ministers, and the common people common people. That is, the actual must in each case be made to correspond to the name. This theory Confucius called theRectification of Names (cheng ming), a doctrine which he recognized as being of the utmost importance. (Fung, 1952, p. 59). Tzu-lu said, “If the Lord of Wei left the adminstration (cheng) of his state to you, what would you put first?” The Master said, “If something has to be put first, it is, perhaps, the rectification (cheng) of names.” (The Analects (Lun yü) of Confucius, Book XIII: 3) (Besides being homophones, the two words in Chinese are cognate, thus showing that the concept of ‘governing’ was felt to be related to that of ‘correcting’.) . (shrink)

Function and teleology can be naturalized either by reference to systems with a particular type of organization or by reference to a particular kind of history. As functions are generally ascribed to states or traits according to their current role and regardless of their origin, etiological accounts are inappropriate. Here, I offer a systems-theoretical interpretation as a new version of an organizational account of functionality, which is more comprehensive than traditional cybernetic views and provides explicit criteria for empirically testable function (...) ascriptions. I propose, that functional states, traits or items are those components of a complex system, which are under certain circumstances necessary for their self-re-production. I show, how this notion can be applied in intra- and trans-generational function ascriptions in biology, how it can deal with the problems of multifunctionality and functional equivalents, and how it relates to concepts like fitness and adaptation. Finally, I argue that most intentional explanations can be treated as functional explanations. (shrink)

Our primary goal in this article is to discuss the cross-talk between biological and cultural factors that become manifested in the individual brain development, neural wiring, neurochemical homeostasis, and behavior. We will show that behavioral propensities are the product of both cultural and biological factors and an understanding of these interactive processes can provide deep insights into why people behave the way they do. This interdisciplinary perspective is offered in an effort to generate dialog and empirical work among scholars interested (...) in merging aspects of anthropology and neuroscience, and anticipates that biological and cultural anthropology converge. We discuss new theoretical developments, hypothesis-testing strategies, and cross-disciplinary methods of observation and data collection. We believe that the exigency of integrating anthropology and the neurosciences is indisputable and anthropology's role in an emerging interdisciplinary science of human behavior will be critical because its focus is, and has always been, on human biological and cultural systems. (shrink)

My book, "The Darwinian Revolution" gives an overview of the revolution as understood at the time of its writing (1979). It shows that many factors were involved, from straight science through philosophical methodology, and on to religious influences and challenges. Also of importance were social factors, not the least of which was the professionalization of science in Britain in the 19th century. Since the appearance of that book, new, significant factors have become apparent, and here I discuss some of the (...) most important -- especially the way in which evolution as an idea came into being as an epiphenomenon of the ideology of cultural progress; the (often tense) interaction between ideas of biological progress and the urge to professionalization, and of how this led to a delay in the full appreciation of what Charles Darwin had done in the "Origin;" and the ongoing divide between biological functionalists and biological formalists, a Kuhnian-type paradigm difference that persists across the Darwinian revolution. (shrink)

Ernan McMullin's 1982 presidential address to the Philosophy of Science Association dealt with the issue of science and values, arguing that although scientists are rightfully wary of the infiltration of cultural and social values, their work is guided by “epistemic values,” such as the drive for consistency and predictive fertility. McMullin argued that it is the pursuit of these epistemic values that drives nonepistemic values from science. Using the case study of the fate of the nonepistemic value of progress in (...) the history of evolutionary theorizing, I show that, vital though McMullin's thinking was for my own scholarship, in fact the study shows that the connections between epistemic and nonepistemic values in science are more complex than either of us supposed. (shrink)

Through autobiography, I explain why I cannot accept conventional Christianity or any other form of religious belief. I sketch how, through modern evolutionary theory, I try to find an alternative world‐picture, one which is, however, essentially agnostic about ultimate meanings. I characterize my position as being that of “David Hume brought up‐to‐date by Charles Darwin.” I express sad skepticism about ever realizing the hopes on which Zygon was founded.

Francis Collins, the director of the NEH and well-known Christian, has said that agnosticism is a bit of a cop-out. Either be a Christian or be an atheism, but have the guts to make up your mind. I shall argue in a positive way for agnosticism, showing that it can be as vibrant a position as belief or non-belief. It gives you a renewed appreciation of life and the world in which we live.