Clade selection is unpopular with philosophers who otherwise accept multilevel selection theory. Clades cannot reproduce, and reproduction is widely thought necessary for evolution by natural selection, especially of complex adaptations. Using microbial evolutionary processes as heuristics, I argue contrariwise, that (1) clade growth (proliferation of contained species) substitutes for clade reproduction in the evolution of complex adaptation, (2) clade-level properties favoring persistence – species richness, dispersal, divergence, and possibly intraclade cooperation – are not collapsible into species-level traits, (3) such properties (...) can be maintained by selection on clades, and (4) clade selection extends the explanatory power of the theory of evolution. (shrink)

Here I advance two related evolutionary propositions. (1) Natural selection is most often considered to require competition between reproducing “individuals”, sometimes quite broadly conceived, as in cases of clonal, species or multispecies-community selection. But differential survival of non-competing and non-reproducing individuals will also result in increasing frequencies of survival-promoting “adaptations” among survivors, and thus is also a kind of natural selection. (2) Darwinists have challenged the view that the Earth’s biosphere is an evolved global homeostatic system. Since there is only (...) one biosphere, reproductive competition cannot have been involved in selection for such survival-promoting adaptations, they claim. But natural selection through survival could reconcile Gaia with evolutionary theory. (shrink)

In fact, nearly every scientist who has written on the general subject of evolution has felt compelled to show how deftly he can skate toward the abyss of teleology without falling in.J.H. Campbell, 163Molecular biology has as its primary objective the elucidation of the coupling between genotype and phenotype. This goal has so far been pursued within a neoDarwinian theoretical framework which is relatively limited. Within this framework we can indeed understand remarkably well the mechanisms of replication and expression of (...) genes and the means by which replication and expression are regulated in cells; we know how genotype determines phenotype at the molecular level, in single cells. We are also close to an understanding of the relationship between genes and development in muticellular animals and plants. (shrink)

The origin and prevalence of transposable elements may best be understood as resulting from “selfish” evolutionary processes at the within-genome level, with relevant populations being all members of the same TE family or all potentially mobile DNAs in a species. But the maintenance of families of TEs as evolutionary drivers, if taken as a consequence of selection, might be better understood as a consequence of selection at the level of species or higher, with the relevant populations being species or ecosystems (...) varying in their possession of TEs. In 2015, Brunet and Doolittle made the case for legitimizing claims for an evolutionary role for TEs by recasting such claims as being about species selection. Here I further develop this “how possibly” argument. I note that with a forgivingly broad construal of evolution by natural selection we might come to appreciate many aspects of Life on earth as its products, and TEs as—possibly—contributors to the success of Life by selection at several levels of a biological hierarchy. Thinking broadly makes this proposition a testable Darwinian one. (shrink)

This bold and brilliant book asks the ultimate question of the life sciences: How did the human mind acquire its incomparable power? In seeking the answer, Merlin Donald traces the evolution of human culture and cognition from primitive apes to the era of artificial intelligence, and presents an original theory of how the human mind evolved from its presymbolic form. In the emergence of modern human culture, Donald proposes, there were three radical transitions. During the first, our bipedal but still (...) apelike ancestors acquired "mimetic" skill—the ability to represent knowledge through voluntary motor acts—which made Homo erectus successful for over a million years. The second transition—to "mythic" culture —coincided with the development of spoken language. Speech allowed the large-brained Homo sapiens to evolve a complex preliterate culture that survives in many parts of the world today. In the third transition, when humans constructed elaborate symbolic systems ranging from cuneiforms, hieroglyphics, and ideograms to alphabetic languages and mathematics, human biological memory became an inadequate vehicle for storing and processing our collective knowledge. The modern mind is thus a hybrid structure built from vestiges of earlier biological stages as well as new external symbolic memory devices that have radically altered its organization. According to Donald, we are symbol-using creatures, more complex than any that went before us, and we may have not yet witnessed the final modular arrangement of the human mind. (shrink)

ABSTRACTMetaphors are a genuinely human construction. They are used to improve communication and they are a very powerful tool that might have an influence in human evolution. In this article I argue that metaphors, transformed in powerful memes, adapt to a new communicative niche and contribute to transform it. In order to prove this hypothesis, I study 319 cartoons published in the wake of the Germanwings air crash, where I inventory 144 metaphors. The study shows the conceptual metaphor evolution for (...) a period of 2 weeks, and how the metaphors changed as a result of the variations in the communicative niche, becoming much more efficient communicatively. (shrink)

In this article I study the genesis of metaphors from an evolutionary perspective. Analyzing 414 cartoons published after the death of the cartoonists of the French satirical magazine Charlie Hebdo, I propose a metaphoric founder effect with the metaphors “PENCIL IS A WEAPON,” “PENCIL IS A CARTOONIST,” and “PENCIL IS FREEDOM,” and a subsequent metaphor drift that creates many related metaphors. Additionally, the success of these metaphors turns the pencil meme into a very efficient and fast-spreading item representing not only (...) the work of cartoonists, but also the fundamental values of Western culture, such as freedom of expression. (shrink)

Fundamental aspects of human use of the environment can be explained by game theory. Game theory explains aggregate behaviour of the human species driven by perceived costs and benefits. In the 'game' of global environmental protection and conservation, the stakes are the living conditions of all species including the human race, and the playing field is our planet. The question is can we control humanity's hitherto endless appetite for resources before we irreparably harm the global ecosystem and cause extinction of (...) even more species? The central problem is that some proportion of the individuals or groups will behave selfishly. The inducement for using more than a fair share, or 'cheating', increases as that resource becomes rarer, thus the benefits of cheating increase. In addition, the total number of people is increasing, so the proportion of cheaters must decrease to even keep total resource use constant. Cost benefit analysis of the effect of regulation and incentives on potential cheaters may provide a rational approach to controlling environmental problems. While it is debatable that environmental values are constant across cultures, communal use of resources seems to follow global rules. Cooperative use and punishment of those who use more than their share appear to be ubiquitous in human societies. Schemes for controlling human impact on the global environment must take into consideration basic behaviours including development of social norms and the positive feedback created because resources become more valuable with increasing rarity leading to more incentive for consumption. (shrink)

Interdisciplinarity is one of the features of modern science, defined as blurring the boundaries of disciplines and overcoming their limitations or excessive specialization by borrowing methods from one discipline into another, integrating different theoretical assumptions, and using the same concepts and terms. Often, theoretical knowledge of one discipline and technological advances of another are combined within an interdisciplinary science, and new branches or disciplines may also emerge. Biosemiotics, a field that arose at the crossroads of biology, semiotics, linguistics, and philosophy, (...) enables scientists to borrow theoretical assumptions from semiotics and extend them to different biological theories. The latter applies especially to extended synthesis, wherein culture is viewed as one of the factors influencing evolution. In the present research, the semiotic system of Ukrainian folk ornament is analyzed through the theory of fractals, key features of which are recursion and self-similarity. As a result, an assumption is made about the fractal structure of culture and social life on a conceptual level. What follows is a discussion of how this assumption can contribute to the multilevel selection theory, one of the foundations of extended synthesis, which employs the concept of self-similarity at all levels of the biological hierarchy. (shrink)

The Modern Synthesis has received criticism for its purported gene-centrism. That criticism relies on a concept of the gene as a unit of instructional information. In this paper I discuss information concepts and endorse one, developed from Floridi, that sees information as a functional relationship between data and context. I use this concept to inspect developmental criticisms of the Modern Synthesis and argue that the instructional gene arose as an idealization practice when evolutionary biologists made comment on development. However, a (...) closer inspection of key claims shows that at least some associated with the Modern Synthesis were in fact adopting the data led definition I favour and made clear arguments for the role of developmental processes beyond genetic input. There was no instructional gene. (shrink)

The philosophy of biomimicry, I argue, consists of four main areas of inquiry. The first, which has already been explored by Freya Mathews, concerns the “deep” question of what Nature ultimately is. The second, third, and fourth areas correspond to the three basic principles of biomimicry as laid out by Janine Benyus. “Nature as model” is the poetic principle of biomimicry, for it tells us how it is that things are to be “brought forth”. “Nature as measure” is the ethical (...) principle of biomimicry, for it tells us that Nature places ethical limits or standards on what it is possible for us to accomplish. And “Nature as mentor” is the epistemological principle of biomimicry, for it affirms that Nature is the ultimate source of truth, wisdom, and freedom from error. Within this overall framework, I argue that seeing Nature as physis—understood as “self-production” or “self-placing-into-the-open”—constitutes the requisite ground for the poetic, ethical, and epistemological principles of biomimicry, and that biomimicry thus conceived involves a new philosophical paradigm, which I call “enlightened naturalism”. (shrink)

The beanbag genetics controversy can be traced from the dispute between Fisher and Wright, through Mayr''s influential promotion of the issue, to the contemporary units of selection debate. It centers on the claim that genic models of natural selection break down in the face of epistatic interactions among genes during phenotypic development. This claim is explored from both a conceptual and a quantitative point of view, and is shown to be defective on both counts.Firstly, an analysis of the controversy''s theoretical (...) origins demonstrates that this claim derives from a misinterpretation of the conceptual foundations of Fisher''s genetical theory of natural selection, and confounds his fundamentally different concepts of the average excess and average effect of a gene. Secondly, an extension of the genic approach is proposed which models the dynamics of selection among epistatically interacting complexes of many genes. Paradoxically, this preliminary, but fundamentally genic model provides quantitative support for some controversial qualitative claims regarding the evolutionary consequences of strong gene interactions made by opponents of genic selectionism, including Mayr''s theory of peripartric speciation. These findings foster hope that the proposed approach may eventually nudge the beanbag controversy out of its conceptual trenches into a more empirically oriented dialogue. (shrink)

Although classical evolutionary theory, i.e., population genetics and the Modern Synthesis, was already implicitly ‘gene-centred’, the organism was, in practice, still generally regarded as the individual unit of which a population is composed. The gene-centred approach to evolution only reached a logical conclusion with the advent of the gene-selectionist or gene’s eye view in the 1960s and 1970s. Whereas classical evolutionary theory can only work with (genotypically represented) fitness differences between individual organisms, gene-selectionism is capable of working with fitness differences (...) among genes within the same organism and genome. Here, we explore the explanatory potential of ‘intra-organismic’ and ‘intra-genomic’ gene-selectionism, i.e., of a behavioural-ecological ‘gene’s eye view’ on genetic, genomic and organismal evolution. First, we give a general outline of the framework and how it complements the—to some extent—still ‘organism-centred’ approach of classical evolutionary theory. Secondly, we give a more in-depth assessment of its explanatory potential for biological evolution, i.e., for Darwin’s ‘common descent with modification’ or, more specifically, for ‘historical continuity or homology with modular evolutionary change’ as it has been studied by evolutionary developmental biology (evo-devo) during the last few decades. In contrast with classical evolutionary theory, evo-devo focuses on ‘within-organism’ developmental processes. Given the capacity of gene-selectionism to adopt an intra-organismal gene’s eye view, we outline the relevance of the latter model for evo-devo. Overall, we aim for the conceptual integration between the gene’s eye view on the one hand, and more organism-centred evolutionary models (both classical evolutionary theory and evo-devo) on the other. (shrink)

Although classical evolutionary theory, i.e., population genetics and the Modern Synthesis, was already implicitly ‘gene-centred’, the organism was, in practice, still generally regarded as the individual unit of which a population is composed. The gene-centred approach to evolution only reached a logical conclusion with the advent of the gene-selectionist or gene’s eye view in the 1960s and 1970s. Whereas classical evolutionary theory can only work with fitness differences between individual organisms, gene-selectionism is capable of working with fitness differences among genes (...) within the same organism and genome. Here, we explore the explanatory potential of ‘intra-organismic’ and ‘intra-genomic’ gene-selectionism, i.e., of a behavioural-ecological ‘gene’s eye view’ on genetic, genomic and organismal evolution. First, we give a general outline of the framework and how it complements the—to some extent—still ‘organism-centred’ approach of classical evolutionary theory. Secondly, we give a more in-depth assessment of its explanatory potential for biological evolution, i.e., for Darwin’s ‘common descent with modification’ or, more specifically, for ‘historical continuity or homology with modular evolutionary change’ as it has been studied by evolutionary developmental biology during the last few decades. In contrast with classical evolutionary theory, evo-devo focuses on ‘within-organism’ developmental processes. Given the capacity of gene-selectionism to adopt an intra-organismal gene’s eye view, we outline the relevance of the latter model for evo-devo. Overall, we aim for the conceptual integration between the gene’s eye view on the one hand, and more organism-centred evolutionary models on the other. (shrink)

Christian ethics accentuates in manifold ways the unique character of human nature. Personalists believe that the mind is never reducible to material and physical substance. The human person is presented as the supreme principle, based on arguments referring to free‐willed actions, the immateriality of both the divine spirit and the reflexive capacity, intersubjectivity and self‐consciousness. But since Darwin, evolutionary biology slowly instructs us that morality roots in dispositions that are programmed by evolution into our nature. Historically, Thomas Huxley, “Darwin's bulldog,” (...) agreed with Darwin on almost everything, except for his gradualist position on moral behavior. Huxley's “saltationism” has recently been characterized by Frans de Waal as “a veneer theory of morality.” Does this mark the end of a period of presenting morality as only the fruit of socialization processes (nurture) and as having nothing in common with nature? Does it necessarily imply a corrosion of personalist views on the human being or do Christian ethics have to become familiar again with their ancient roots? (shrink)

Many marine invertebrates have the ability to combine tissues with conspecifics and form chimeras. This ability is usually accompanied by the presence of a polymorphic self/non-self recognition system that allows integration of closely related individuals, but blocks interactions between those more distantly related. The presence of a discriminatory allorecognition system suggests that there are costs and benefits to chimerism that are correlated to relatedness, but the nature of these costs and benefits is still poorly understood. Interestingly, allorecognition is found throughout (...) the animal kingdom, with examples in nearly all the multicellular phyla; however, the role of allorecognition in these different species is not always clear. In addition, the molecular mechanisms underlying allorecognition in different species are not related, suggesting a unique origin for each species. This brings up the question as to whether there is a universal need for self/non-self recognition processes among the metazoa, or if these systems evolve in response to different selective pressures. We are studying allorecognition and chimerism in the colonial ascidian, Botryllus schlosseri. Allorecognition takes place at the tips of the extracorporeal vasculature, and can result in a parabiosis, or a rejection reaction that blocks vascular fusion. Fusion has both hypothesized benefits as well as well-documented costs. This article will focus on characterizing the costs and benefits of fusion and chimerism in Botryllus, and put them into the broader context of the role of allorecognition in the metazoa. (shrink)

Abstract This paper turns the tables on the criticisms of sociobiology that stem from a sociological perspective; many of those criticisms lack cogency and coherence in such measure as to demand, in their turn, a psycho?sociological explanation rather than a rational justification. This thesis, after a brief exposition of the main ideas of sociobiology, is argued in terms of four of the most prominent complaints made against it. Far from embodying tired prejudices about the psychological and sociological implications of biology, (...) sociobiology actually reverses a number of naive assumptions about the consequences of natural selection. I surmise that what really provokes the critics of sociobiology is a certain philosophical relevance of sociobiology both in the broad sense (the application of natural selection principles to behaviour) and in the narrow sense (the insistence on the centrality of certain mechanisms, such as gene selection). In both cases, taking biology seriously affects our philosophical vision of the nature of human beings. At the deepest level, however, the distinction between the level at which rational criteria apply and those where we must have recourse to psycho?social explanations probably breaks down. (shrink)

Bernd Heinrich and Maine ravens are exemplars of Despret's concepts of politeness, “faire connaissance” and recruitment. He was dissuaded by his mentor from studying them due to their intelligence and their recalcitrance against reductive methods. Gaining their confidence would take years. Once he did so they allowed him to see an astonishing range of behaviors and they accepted him as a socius. This was research that took into account the interests of the ravens themselves to answer complicated questions about their (...) behavior. Ravens also practice this intermingling of interests and action with wolves. (shrink)

In this paper, I will conduct three interrelated analyses. First, I will develop an analysis of various concepts in the history of biology that used to refer to individual-level phenomena but were then reinterpreted by the Modern Synthesis in terms of populations. Second, I argue that a similar situation can be found in contemporary biological theory. While different approaches reflect on the causal role of developing organisms in evolution, proponents of the Modern Synthesis avoid any substantial change by reinterpreting and (...) explaining individual-level phenomena from a population perspective. Finally, I will approach this debate by advocating the statistical reading of natural selection, which holds that explanations by natural selection are statistical. I will argue that the above historical conceptual reinterpretations belong to a new explanatory strategy developed by the Modern Synthesis based on population thinking. The reinterpretation of concepts at the individual level is part of the explanatory framework of the Modern Synthesis and the empty role of development within this framework. Moreover, the statistical perspective adopted here allows for the integration of two explanatory models: population-statistical and individual-causal. Finally, I will argue that this pluralistic framework can help to define the explanatory scope of the different biological approaches in order to achieve a coherent integration of development into evolution without rejecting population thinking. (shrink)

A theoretical framework is provided to explore teleonomy as a problem of self-causation, distinct from upward, downward and reticulate causation. Causality theories in biology are often formulated within hierarchy theories, where causation is conceptualized as running up or down the rungs of a ladder-like hierarchy or, more recently, as moving between multiple hierarchies. Research on the genealogy of cosmologies demonstrates that in addition to hierarchy theories, causality theories also depend upon ideas of time. This paper explores the roots and impact (...) of both time and hierarchy thinking on causal reasoning in the evolutionary sciences. Within evolutionary biology, the Neodarwinian synthesis adheres to a linear notion of time associated with linear hierarchies that portray upward causation. Eco-evo-devo schools recognize the importance of downward causation and consequently receive resistance from the standard view because downward causation is sometimes understood as backward causation, considered impossible by adherents of a linear time model. In contrast, downward causation works with a spatial or presential time notion. Hybridization, lateral gene transfer, infective heredity, symbiosis and symbiogenesis require recognition of reticulate causation occurring in both space and time, or spacetime, between distinct and interacting ontological hierarchies. Teleonomy is distinct from these types of causation because it invokes the problem of self-causation. By asking how the focal level in a hierarchy can persist through time, self-causation raises philosophical concerns on the nature of duration, identity and individuality. (shrink)

The year 2009 has been a year of numerous commemorations of both scientific and non-scientific achievements that contributed to the advancement of human kind. Protestants celebrated the 500th anniversary of the birth of Calvin; literary critics celebrated the 200th anniversary of the poet Edgar Allan Poe; and the musical genius Felix Mendelssohn-Bartholdy was also born 200 years ago. 2009 further marked the bicentennial of the birth of Louis Braille, the inventor of Braille; and Abraham Lincoln, the 16th president of the (...) United States, who founded the National Academy of Sciences. Pierre Curie, famous for his work on radioactivity that he conducted together with his wife Marie Curie, was born 150 ago; as was John Dewey, a philosopher and psychologist who is recognized as one of the founding fathers of both pragmatism as well as functional psychology. UNESCO and the International Astronomical Union dubbed 2009 the International Year of Astronomy. By doing so, astronomers celebrated the 400th anniversary of Galileo Galilei’s telescopic observations as well as the publication of Johannes Kepler’s Astronomia nova wherein he formulated the first two laws of planetary motion. 2009 also marked the last of a 3-year-long celebration of Planet Earth, another UNESCO-governed initiative. However, for evolutionary biologists and philosophers of science, 2009 will be largely remembered for its worldwide commemorations of the 200th anniversary of the birth of Charles Darwin, and the 150th anniversary of the publication of his magnum opus On the origin of species by means of natural selection. Footnote1 In order to pay tribute to Darwin’s major contribution to the advancement of evolutionary science, the International Union of Biological Sciences and the International Union of History and Philosophy of Science have called the year 2009 the Darwin Year. Given that so many scientific discoveries were commemorated, COPUS, the Coalition on the Public Understanding on Science, called out 2009 as the Year of Science, in the hope to pay equal tribute to both the field of biology as well as astronomy. 2009 was indeed a year of biology. Somewhat overshadowed by the big Darwin celebrations, smaller-scaled events were held to commemorate the 200th anniversary of the publication of Lamarck’s Philosophie Zoologique; and the 150th anniversary of the death of Alexander von Humboldt, the father of biogeography. In 1910, Constantin Mereschkowsky wrote his article on symbiogenesis entitled ‘The Theory of Two Plasmas as the Basis of Symbiogenesis, a New Study for the Origins of Organisms’. The article was published in the German Biologisches Zentralblatt, the journal that would later evolve into the current Theory in Biosciences. Somewhat forgotten, but equally important for the field of symbiogenesis, was the 200th anniversary of the birth of Pierre-Joseph Van Beneden, a Belgian paleontologist and zoologist famous for distinguishing parasitism from commensalism. Finally, Henry Bergson, known for inventing the currently rejected notion of élan vital, was born 150 years ago. In order to memorialize the important role these biologists played in the advancement of our understanding of the evolutionary process, a 2-day international conference was organized entitled: Evolution today and tomorrow, Darwin evaluated by contemporary evolutionary and philosophical theories. The conference was organized by The Centre for Philosophy of Science of the University of Lisbon (Portugal), in collaboration with the Centre for Environmental Biology of the same university, and the Lisbon Centre for Applied Psychology. The articles presented here are a spin-off of this conference. The current volumes contain the peer-reviewed articles of a selection of the plenary and invited speakers, as well as those of scholars who were additionally invited to contribute to the volumes. (shrink)

Traditionally defined as the science of the living, or as the field that beyond anatomical structure and bodily form studies functional organization and behaviour, physiology has long been excluded from evolutionary research. The main reason for this exclusion is that physiology has a presential and futuristic outlook on life, while evolutionary theory is traditionally defined as the study of natural history. In this paper, I re-evaluate these classic science divisions and situate physiology within the history of the evolutionary sciences, as (...) well as within debates on the Extended Evolutionary Synthesis and the need for a Third Way of Evolution. I then briefly point out how evolutionary physiology in particular contributes to research on function, causation, teleonomy, agency and cognition. (shrink)

This essay explores the cultural and political processes which shape human worldviews. I examine the functions, mechanisms, and consequences of cultural distortions of perception, and the evolution of the western scientific worldview from its ancient animistic roots. From the evidence reviewed here I infer that collective deceptions are endemic in human culture, that physicalism is a collective deception and that the 'hard problem' of consciousness, defined in physicalist terms, is a false problem.

Explanatory Externalism states that the only adaptive force in evolution is natural selection. Explanatory Externalism is a central thesis of the Modern Evolutionary Synthesis. The etiological theory of natural selected-effect functions also advocates Explanatory Externalism. According to this theory, natural selection is the process responsible for determining the proper natural functions of traits. However, I will point out several challenges to Explanatory Externalism that are proposed primarily by developmental biology and its various subfields. Based on these challenges, this paper will (...) argue why biological functions cannot be fully explained by the selected-effect theory, i.e., that a theory of biological functions must adopt some kind of Explanatory Internalism. At the end of this paper, I will discuss whether or not Explanatory Internalism entails a pluralistic view of biological functions, and how this discussion is related to the different explanations of fit and diversity found in evolutionary biology. (shrink)

(English:) The article introduces conspiracy beliefs and considers the most relevant literature in the field. The main purpose of the article is phenomenological: it proposes to understand conspiracy beliefs within the broader genre of what I call general conceptual beliefs (or simply, general beliefs), whose central features are big issues, logical-conceptual fallacies, pseudorationality, bad faith, and monological bias. I claim that general beliefs are functional to a motivationally biased and inherently dishonest communication (the same one that conspiracy narratives share with (...) political extremism, religious fundamenta-lism and other eccentric belief systems), which is essentially conceived for practical and self-representational purposes (not for knowledge). The article argues against the mere stigmatization of this phenomenon and rather seeks to understand it by looking at a broader and murkier region of human experience, for which we are all responsible in some way. -/- (Castellano:) El artículo introduce al análisis de las creencias conspirativas y considera la literatura más relevante sobre el tema. El objetivo del escrito es fenomenológico: entender las creencias conspirativas colocándolas en un género más amplio, las creencias conceptuales generales (o, simple-mente, creencias generales), cuyas carac-terísticas esenciales son: grandes temas, falacias lógico-conceptuales, pseudoracionalidad, mala fe y tendencia monológi-ca. Las creencias generales son funcionales a una comunicación sesgada y tendencialmente deshonesta, la misma que las his-torias conspirativas comparten con ex-tremismos políticos, fundamentalismos religiosos y otros sistemas de creencias excéntricos, cuya finalidad es eminentemente práctica y autorepresentativa (no teorética). El artículo se opone a la mera estigmatización del fenómeno y trata más bien de comprenderlo, observando una región más amplia y turbia de la experiencia humana, de la que todos somos responsables de alguna manera. (shrink)

It is widely assumed that there is value in the biological tie between parent and child. An implication of this is that adoption is often considered a less desirable alternative to procreation. This paper offers a philosophical defence of adoptive parenthood as a valuable and authentic form of parenthood. While previous defences have suggested that society’s valorisation of the biological tie is unjustified, I argue herein that the conception of the biological tie that features in the normative discourse on parenthood (...) is too narrowly genocentric. Against this genocentric conception, recent work in the philosophy of biology has emphasised the roles of joint determination, dynamic construction, and extended inheritance in development, which I suggest can substantiate a more inclusive conception of the biological tie. Accordingly, I propose that adoptive parents form a rich variety of biological ties with their children, some of which are as heritable and formative as genetic relatedness. (shrink)

The aim of this paper is to develop a new connection between naming and necessity. I argue that Kripke’s historical account of naming presupposes the functional necessity of naming. My argument appeals to the etiological notion of function, which can be thought to capture the necessity of functionality in historical terms. It is shown that the historical account of naming entails all conditions in an etiological definition of function.

Agency is a central concept in the organisational approach to organisms, which accounts for their internal purposiveness. Recent recognition of the active role played by organisms in evolution has led researchers to use this concept in an evolutionary approach. Agency is then considered in terms of ‘unintentional’ choice: agents choose from a given repertoire the behaviour most appropriate to their goal, with this choice influencing evolutionary pathways. This view, while allowing for the evolutionary role of the activity of organisms, presents (...) two pitfalls. First, it restricts organisms’ agency by confining their choice within the bounds of a behavioural repertoire, and assuming their goals are dictated by natural selection. Second, this view, while claiming to eliminate the idea of intentionality, retains its structure: organisms are portrayed as rational entities, persistently pursuing specific goals. This leads us back to a teleological thinking, whose use in evolutionary theory has already been heavily criticised. This paper proposes a conception of biological agency which does not assume goal-directedness but considers agency as inventiveness. An organism will be said to be an agent if it is the triggering cause of behaviours falling outside the known repertoire and whose form can only be explained by the unique relationship between the organism and the environment. If these behaviours have implications in evolution, the agent will be considered an evolutionary agent. The merit of this approach is further validated by evidencing the significant role behavioural innovations play in evolution. Finally, the last section delves into the process of invention by examining animal play. (shrink)

The term “altruism” is used in many ways. In this thesis, I discuss altruism as a motivation, which is an influential notion in philosophy and the social sciences. Questions about the nature and the possibility of altruistic motivation have inspired much debate, both in academia and in everyday conversations. How can we know when we are truly altruistic and when we are merely helping others as a means to some egoistic goal? Are humans even capable of genuine altruistic motivation or (...) are we always egoistic deep down? Before answering questions like these, however, we need to ask a more fundamental question: how should we define altruistic motivation? The standard account of altruistic motivation in the literature defines it as an ultimate desire to increase the welfare of others. The central claim I will argue for in this thesis is that this standard account is intrinsically flawed and should be abandoned. -/- The problem with the standard account of altruistic motivation, in short, is its reliance on the notion of “ultimate desire”, which is a limited and unfruitful way of conceptualizing altruistic motivation. The criticism I propose is based on an interdisciplinary analysis of many aspects of the standard account, discussing its philosophical basis, its use in scientific research, its historical development, and its relation to common sense and morality. -/- This thesis is divided into four parts, each composed of two chapters. Part I presents the many technical accounts of altruism present in the scientific literature, distinguishing the standard account of altruistic motivation from alternative accounts of altruism. I discuss the hypotheses of psychological altruism, which states that some of our ultimate desires aim to increase the welfare of others, and psychological egoism, which states that all of our ultimate desires are egoistic. In this first part, I discuss some of the central philosophical concepts underlying the standard account of altruistic motivation, showing their implications for the debate about psychological altruism. -/- Part II discusses the main arguments for the existence of altruistic motivation. I argue that the main arguments in the scientific literature fail in making a defense of psychological altruism and that the definition of altruistic motivation makes the solution to the debate on psychological altruism virtually impossible. I conclude that the standard account makes altruistic motivation an unverifiable and unfruitful notion for scientific research. -/- Part III discusses the history of altruism and egoism, focusing particularly on early modern philosophy. I argue that the modern accounts of altruism and egoism diverge from the contemporary standard account of altruistic motivation. Reading the debates in modern philosophy through the lens of psychological altruism and psychological egoism oversimplifies and impoverishes the modern debate. I argue that the standard account also fails in representing the original use of “altruism”, proposed by Auguste Comte. In this third part, I show how the use of the standard account of altruistic motivation cannot be based on its historical foundations. -/- Finally, Part IV addresses the normative character of altruism and discusses some alternative ways of conceptualizing altruism. I argue that the standard account of altruistic motivation does not reflect the ordinary use of the term “altruism” and fails in accounting for its normative character. As an alternative, I propose an alternative account of altruism, virtue altruism. I claim that this account better reflects the ordinary intuitions about altruism, accommodates the descriptive and normative dimensions of altruism, is at home with most of the historical accounts of altruism, and may promote the active promotion of altruistic actions. (shrink)