In his late lecture course titled “Nature and Logos: The Human Body” (1959-1960), Merleau-Ponty proposed that we understand human symbolism, language, and reason by viewing the human being initially as a variant on animal embodiment and perception prior to being a rational animal. To elaborate this project, he outlined an “esthesiology” informed by the study of evolution. However, in the sketches that survive of “Nature and Logos,” we find neither a detailed explanation of how Merleau-Ponty understood this approach nor (...) its concrete execution with respect to the human body. In this paper I reconstruct Merleau-Ponty’s esthesiology. An animate body possesses two “sides”: it is a sensing organism open onto the world and a sensible part of the natural world. Visual animals such as humans can see, see themselves, and be seen by others. To understand their way of life, we must study not only the body’s capacities for perception and action, but also how those capacities are seen by other organisms, especially conspecifics. The body’s visibility shapes the social prospects of a species and its potential for developing complex sociality, language, and cognition. I apply this basic esthesiological principle to study the human eye. Both in its vision and its visibility, the human eye is a distinctive variation of animality and one that conditions and shapes human sociality and cognition. I develop this insight with respect to a central philosophical theme of Merleau-Ponty’s late work, the relation of the visible and the invisible. I conclude by discussing the importance of Merleau-Ponty’s esthesiology for his late thought and current discussions of the naturalization of phenomenology. (shrink)

Stalk‐eyed flies of the family Diopsidae exhibit a unique form of hypercephaly, which has evolved under both natural and sexual selection. Male hypercephaly is used by female diopsids as an indicator of male quality. By choosing to mate with males expressing the most‐exaggerated hypercephaly, females can benefit both from the enhanced fertility of these males and the transmission of other heritable advantages to their offspring. Stalk‐eyed flies are close relatives of the model organism, Drosophila melanogaster. We have shown that similar (...) genetic and cellular mechanisms regulate the initial development of the head capsule in fruitflies and diopsids. The great diversity of stalk‐eyed fly species, exhibiting varying degrees of hypercephaly and sexual dimorphism, constitutes a major advantage for comparative studies of their development and evolution. BioEssays 29: 300–307, 2007. © 2007 Wiley Periodicals, Inc. (shrink)

The compound eyes of insects exhibit stunning variation in size, structure, and function, which has allowed these animals to use their vision to adapt to a huge range of different environments and lifestyles, and evolve complex behaviors. Much of our knowledge of eye development has been learned from Drosophila, while visual adaptations and behaviors are often more striking and better understood from studies of other insects. However, recent studies in Drosophila and other insects, including bees, beetles, and butterflies, have begun (...) to address this gap by revealing the genetic and developmental bases of differences in eye morphology and key new aspects of compound eye structure and function. Furthermore, technical advances have facilitated the generation of high‐resolution connectomic data from different insect species that enhances our understanding of visual information processing, and the impact of changes in these processes on the evolution of vision and behavior. Here, we review these recent breakthroughs and propose that future integrated research from the development to function of visual systems within and among insect species represents a great opportunity to understand the remarkable diversification of insect eyes and vision. (shrink)

CD-ROM contains: Pt. I. Language and the motor theory. -- Pt. III. Gesture and animation. -- Pt. III. Applications of the motor theory. -- Pt. IV. Evolutionary biology: culture and society.

The open rhabdoms of the fly's eye enhance absolute sensitivity but to avoid compromising spatial acuity they require precise optical geometry and neural connections.1 This neural superposition system evolved from the ancestral insect eye, which has fused rhabdoms. A recent paper by Zelhof and co‐workers2 shows that the Drosophila gene spacemaker (spam) is necessary for development of open rhabdoms, and suggests that mutants revert to an ancestral state. Here I outline how open rhabdoms and neural superposition may have evolved via (...) nocturnal intermediates, and discuss the implications for the role of spam in insect phylogeny. BioEssays 29: 111–115, 2007. © 2007 Wiley Periodicals, Inc. (shrink)

Mystery: the scalpel that split consciousness -- Beauty: sirens of the gene -- Reality: capers of the unseen sun -- Sensory: fitness beats truth -- Illusory: the bluff of a desktop -- Gravity: spacetime is doomed -- Virtuality: inflating a holoworld -- Polychromy: mutations of an interface -- Scrutiny: you get what you need, in both life and business -- Community: the network of conscious agents -- Precisely: the right to be wrong.

Evolution and Religion in American Education shines a light into one of America’s dark educational corners, exposing the regressive pedagogy that can invade science classrooms when school boards and state overseers take their eyes off the ball. It sets out to examine the development of college students’ attitudes towards biological evolution through their lives. The fascinating insights provided by interviewing students about their world views adds up to a compelling case for additional scrutiny of the way young people’s (...) educational experiences unfold as they consider—and indeed in some cases reject—one of science’s strongest and most cogent theoretical constructs. Inevitably, open discussion and consideration of the theory of evolution can chip away at the mental framework constructed by Creationists, eroding the foundations of their faith. The conceptual battleground is so fraught with logical challenges to Creationist dogma that in a number of cases students’ exposure to such dangerous ideas is actively prevented. This book provides a detailed map of this astonishing struggle in today’s America—a struggle many had thought was done and dusted with the onset of the Enlightenment. (shrink)

Insect and crustacean lineages diverged over 500 Myr ago, and there are continuing uncertaintles about whether they evolved from a common arthropod ancestor or, alternatively, they evolved independently from annelid worms. Despite the diversity of their limbs and lifestyles, the nervous systems of insects and crustaeeans share many common features both in development and in function. Cellular and molecular embryology techniques reveal good evidence for homologies in the developing segmental ganglia. In the visual system, this seemingly common programme of insect (...) and crustacean CNS development culminates in common adult neural function. Comparisons of the cellular anatomy and physiology of animals as diverse as flies and crayfishes indicate that the neural circuits in the lamina of their optic lobe have been inherited largely unchanged from a common ancestor with good compound eyes. (shrink)

Most chelicerates operate the world with two kinds of visual organs, the median and lateral eyes of the arthropod ground plan. In harvestmen (Opiliones), however, members of the small and withdrawn suborder Cyphophthalmi lack eyes except for two genera with lateral eyes. In the other suborders (Eupnoi, Dyspnoi, and Laniatores), lateral eyes are absent but median eyes pronounced. To resolve the phylogenetic history of these contrasting trait states and the taxonomic position of a four‐eyed harvestmen fossil, visual system development was (...) recently studied in the daddy longleg Phalangium opilio (Eupnoi). This effort uncovered not only a highly regressed and internalized pair of lateral eyes but also a similarly cryptic pair of additional median eyes. After recounting the evo‐devo discovery journey of uncompromising harvestmen taxonomists, this review explores comparative evidence that the enigmatic P. opilio relict eyes might serve the multichannel zeitgeber system of the biological clock. (shrink)

Easy to read, adorned with Mel Calman's brilliant illustrations, passionately argued, yet never less than scientifically profound, this book remains the...

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)

Natural language processing (NLP) has undergone significant changes in its methods, reflecting advances in computing technology and cognitive research. This article reviews the key stages of the evolution of natural language processing methods. The article touches on the topic of the first NLP systems developed, provides justification for the reasons for the complexity of some processed texts and the possible depth of analysis. In addition, it describes not only NLP methods before and after the GPT revolution, but also current (...) trends and prospects in the field of natural language processing. The article allows us to trace how the idea of natural language text has changed during the development of computer analysis methods, as well as to understand what text is in the mirror of natural language processing, what is really the subject of natural language processing research and what cannot be seen through the eyes of a simple researcher who does not use NLP methods. (shrink)

RésuméIl n'y a pas de sujet plus idoine à justifier la philosophie ouverte qui est celle de Dialectica que l'étude de l'évolution du concept de raison dans la pensée occidentale.C'est avec la création de la géométrie déductive que le mot raison prit un sens chez les Grecs du ***Ve siècle av. J.‐C. A l'évidence sensible qui résulte du témoignage de nos sens et ne constate que le comment d'un fait observé, les géomètres grecs substituent l'évidence intelligible qui en explique le (...) pourquoi, en montrant qu'il est la conséquence nécessaire d'un petit nombre de propositions admises comme évidentes. S'élevant du concret à l'abstrait, ils dégagent l'essence intelligible de l'accident sensible et substituent au réel le possible. Les disciplines empiriques des Orientaux font place aux sciences théoriques et explicatives: l'astronomie, la mécanique, l'optique, la théorie musicale. Toutefois, au lieu de voir dans les concepts mathématiques une création de l'esprit, les penseurs‐géomètres de la Grèce les assimilent à une découverte par les yeux de l'ǎme d'essences préexistantes. Ils méprisèrent, en outre, les applications pratiques qui seules peuvent stimuler les sciences expérimentales. De là procèdent les limites, puis l'arrět de la science hellénique.Les conquětes d'Alexandre déversèrent sur l'Occident méditerranéen les religions de salut de l'Orient. A la recherche désintéressée du vrai se substitue la gnose, la révélation de mystères transcendants à la raison. Lorsque le message chrétien devint une philosophie puis une théologie, on en vint à distinguer » la démonstration hellénique « par le raisonnement et la dialectique, et » la démonstration hébraique « par les prophéties et les miracles des articles de la foi. La Scolastique rechercha l'accord de la raison et de la foi, en entendant par raison l'apport de la science et de la philosophie helléniques, assimilées, à partir du XIIIe siècle dans la Latinité, à l'encyclopédie aristotélicienne. La Scolastique échoua dans cette tentative. La doctrine de » la double vérité « fut l'aveu de cette impuissance.Pour se libérer de la mentalité scolastique, il fallut s'affranchir dans l'étude des phénomènes naturels de l'autorité d'Aristote, du joug de la théologie et parvenir à une théorie correcte de la connaissance, en particulier de la valeur des idées abstraites et de la distinction des vérités formelles et des vérités empiriques. Il fallut interpréter comme une création de l'esprit ce que les Grecs assimilaient à une découverte de vérités préexistantes. La désagrégation de l'a priori synthétique, conçu à la façon des Cartésiens et des Kantiens, conduit à se demander ce qui subsiste des exigences a priori de la raison. C'est à quoi s'évertue de répondre la dernière partie de l'article.ZusammenfassungEs gibt keinen geeigneteren Gegenstand zur Rechtfertigung der offenen Philosophie, die von der Dialectica vertreten wird, als das Studium der Entwicklung des Vernunftsbegriffes im abendländischen Denken.Mit der Entstehung der deduktiven Geometrie erhält das Wort Vernunft bei den Griechen des 5. Jahrhunderts vor Christo einen Sinn. An Stelle der gefühlsmässigen Evidenz, die auf der Gewissheit unserer Sinne beruht und lediglich das Wieeiner beobachteten Tatsache feststellt, setzen die griechischen Geometer die logische Evidenz, die das Warum erklärt, indem sie zeigt, dass es eine Folge einer kleinen Zahl von Voraussetzungen ist, die als evident angesehen werden können. Sich vom Konkreten zum Abstrakten erhebend, befreien sie das intelligible Wesen von der Zufälligkeit des Sinnlichen und ersetzen das Reelle durch das Mögliche. Die empirischen Disziplinen der Morgenländer schaffen Platz für die theoretischen und erklärenden Wissenschaften wie Astronomie, Mechanik, Optik, Musiktheorie. Immerhin, anstatt in den mathematischen Konzepten eine Schöpfung des Geistes zu sehen, setzen die geometrischen Denker Griechenlands diese der Entdeckung präexistenter Essenzen durch die Augen der Seele gleich. Sie verachten im übrigen die praktischen Anwendungen, die nur die Experimentalwissen‐schaften anregen können. Daher kommt es, dass die griechische Wissenschaft bei einer gewissen Grenze Halt machen musste.Die Schlachten Alexanders verschlangen im Abendland des Mittelmeeres die Heilsreligionen des Orients. An Stelle des uneigennützigen Suchens nach der Wahrheit tritt die Gnosis, das Erheben des mysteriös‐Transzendenten in den Bereich der Vernunft. Als die christliche Botschaft eine Philosophie, darauf eine Theologie wurde, begann man zu unterscheiden zwischen der » griechischen Beweisführung « mittels Vernunft und Dialektik und der » hebräischen Beweisführung « mittels Prophezeiungen und Wundern des zu Glaubenden. Die Scholastik forschte nach dem Zusammenhang zwischen Vernunft und Glaube, indem sie unter Vernunft den Beitrag der griechischen Wissenschaft und Philosophie verstand, der Aristotelischen Enzyklopädie angeglichen in der Folgezeit des 13. Jahrhunderts im Römischen Reich. Die Scholastik scheiterte in diesem Versuch. Die Lehre der » doppelten Wahrheit « war das Geständnis dieses Unvermögens.Um sich von der scholastischen Mentalität zu befreien, hiess es sich im Studium der Naturereignisse von der Autorität des Aristoteles befreien, vom Joch der Theologie und zu einer korrekten Theorie der Erkenntnis zu gelangen, speziell des Wertes der abstrakten Ideen und der Unterscheidung zwischen formellen und empirischen Wahrheiten. Was die Griechen einer Entdeckung von präexistenten Wahrheiten gleichsetzten, musste als Schöpfung des Geistes interpretiert werden. Die Desagregation des synthetischen Apriori, aufgefasst im Sinne von Descartes und Kant, führte zur Frage, was vorhanden sei von den apriori‐Erfordernissen der Vernunft.Dies zu beantworten, bemüht sich der letzte Teil des Artikels.There is no subject more suitable to the open philosophy of Dialectica than the study of the development of the concept of reason in Western thought.The word » reason « acquired a meaning with the creation of deductive geometry by the Greeks of the Vth cent. B. C. These geometers substituted for the sensible evidence, which only establishes the » what « of an observed fact, the intelligible evidence which explains the » why « of such an observed fact, by showing that it is the necessary result of a small number of statements, accepted as self‐evident. Rising from the concrete to the abstract, the geometers isolated the intelligible essence from the sensible accident, and substituted for the real the possible. The empirical technics of the Orientals made place for the theoretical sciences of the Greeks: astronomy, mechanics, optics and musical theory. Instead, however, of seeing mathematical concepts as creations of the mind, the Greek geometers considered them as preexisting entities, discovered by the eyes of the soul. They furthermore disregarded the practical applications which alone can stimulate experimental sciences. These were the limitations and the causes of the eventual end of hellenic science.The conquests of Alexander brought to the Western Mediterranean the religions of salvation of the East. The gnose, revelation of mysteries transcending reason, took the place of the disinterested search for truth. As the Christian message became a philosophy and then a theology, the distinction came to be made between the » hellenic demonstration of the faith « by logic and dialectics, and the » hebrew demonstration « by the prophecies and the miracles. The scholastics sought to reconcile reason with faith, by defining reason as the legacy of Greek science and philosophy, identified, after the XIIIth century, with the Aristotelian Encyclopedia. They failed in this endeavour. The doctrine of the » double truth « was the admission of this failure.In order to progress beyond the scholastic outlook, it was necessary to reject the precepts of Aristotle in the study of natural phenomena, to become free of the tyranny of theology, to develop a correct theory of knowledge, especially as regards the role of abstract ideas and the distinction between formal and empirical truths. It was necessary to interpret as a creation of the mind what the Greeks considered the discovery of preexisting truths. The breakdown of the synthetic apriori of the Cartesians and the Kantians leads one to wonder what remains of the a priori requisites of reason. The last part of the article suggests an answer to this question. (shrink)

Evolution has shaped all living organisms on Earth, although many details of this process are shrouded in time. However, it is possible to see, with one's own eyes, evolution as it happens by performing experiments in defined laboratory conditions with microbes that have suitably fast generations. The longest‐running microbial evolution experiment was started in 1988, at which time twelve populations were founded by the same strain ofEscherichia coli. Since then, the populations have been serially propagated and have (...) evolved for tens of thousands of generations in the same environment. The populations show numerous parallel phenotypic changes, and such parallelism is a hallmark of adaptive evolution. Many genetic targets of natural selection have been identified, revealing a high level of genetic parallelism as well. Beneficial mutations affect all levels of gene regulation in the cells including individual genes and operons all the way to global regulatory networks. Of particular interest, two highly interconnected networks—governing DNA superhelicity and the stringent response—have been demonstrated to be deeply involved in the phenotypic and genetic adaptation of these experimental populations. BioEssays 29:846–860, 2007. © 2007 Wiley Periodicals, Inc. (shrink)

Not only does Hoffman claim that we do not see reality as it is, but that unperceived brains, trees and moons do not exist. His “interface theory of perception” is a peculiar blend of metaphorical ontology (objects are icons, space-time is a desktop) and mathematical modelling (the game-theoretical argument that fitness trumps truth. Conflating abstractions with concrete experience, evolution is used to refute everything (including evolution itself. Hoffman’s sweeping iconoclasm then lands where it took off: addressing the problem (...) of consciousness. After arguing against reality, he will tell us what it is. (shrink)

The striking color patterns of butterflies and birds have long interested biologists. But how these animals see color is less well understood. Opsins are the protein components of the visual pigments of the eye. Color vision has evolved in butterflies through opsin gene duplications, through positive selection at individual opsin loci, and by the use of filtering pigments. By contrast, birds have retained the same opsin complement present in early-jawed vertebrates, and their visual system has diversified primarily through tuning of (...) the short-wavelength-sensitive photoreceptors, rather than by opsin duplication or the use of filtering elements. Butterflies and birds have evolved photoreceptors that might use some of the same amino acid sites for generating similar spectral phenotypes across 540 million years of evolution, when rhabdomeric and ciliary-type opsins radiated during the early Cambrian period. Considering the similarities between the two taxa, it is surprising that the eyes of birds are not more diverse. Additional taxonomic sampling of birds may help clarify this mystery. (shrink)

Given a subject so imbued with contention and conflicting theoretical stances, it is remarkable that automated instruments ever came to replace the human eye as sensitive arbiters of color specification. Yet, dramatic shifts in assumptions and practice did occur in the first half of the twentieth century. How and why was confidence transferred from careful observers to mechanized devices when the property being measured – color – had become so closely identified with human physiology and psychology? A fertile perspective on (...) the problem is via the history of science and technology, paying particular attention to social groups and disciplinary identity to determine how those factors affected their communities’ cognitive territory. There were both common and discordant threads motivating the various technical groups that took on the problems of measuring light and color from the late nineteenth century onwards, and leading them towards the development of appropriate instruments for themselves. The transition from visual to photoelectric methods could be portrayed as a natural evolution, replacing the eye by an alternative roviding more sensitivity and convenience – indeed, this is the conventional positivist view propounded by technical histories. However, the adoption of new measurement technologies seldom is simple, and frequently has a significant cultural component. Beneath this slide towards automation lay a raft of implicit assumptions about objectivity, the nature of the observer, the role of instruments, and the trade-offs between standardization and descriptive power. While espousing rational arguments for a physical detector of color, its proponents weighted their views with tacit considerations. The reassignment of trust from the eye to automated instruments was influenced as much by the historical context as by intellectual factors. I will argue that several distinct aspects were involved, which include the reductive view of color provided by the trichromatic theory; the impetus provided by its association with photometry; the expanding mood for a quantitative and objective approach to scientific observation; and, the pressures for commercial standardization. As suggested by these factors, there was another shift of authority at play: from one technical specialism to another. The regularization of color involved appropriation of the subject by a particular set of social interests: communities of physicists and engineers espousing a ‘physicalist’ interpretation, rather than psychologists and physiologists for whom color was conceived as a more complex phenomenon. Moreover, the sources for automated color measurement, and instrumentation for measuring color, were primarily from the industrial sphere rather than from academic science. To understand these shifts, then, this chapter explores differing views of the importance of observers, machines and automation. (shrink)

The retina pigment epithelium (RPE) is a highly specialised epithelium that serves as a multifunctional and indispensable component of the vertebrate eye. Although a great deal of attention has been paid to its transdifferentiation capabilities and its ancillary functions in neural retina development, little is known about the molecular mechanisms that specify the RPE itself. Recent advances in our understanding of the genetic network that controls the progressive specification of the eye anlage in vertebrates have provided some of the initial (...) cues to the mechanisms responsible for RPE patterning. Here, we have outlined many recent findings that suggest that a limited number of transcription factors, including Otx2, Mitf and Pax6 and a few signalling cascades, are the elements required for the onset of RPE specification in vertebrates. Furthermore, using this information and the data available on the specification of the pigmented cells of primitive chordates, we have ventured some hypotheses on the origin of RPE cells during evolution. BioEssays 26:766–777, 2004. © 2004 Wiley Periodicals, Inc. (shrink)

The paper reconstructs the evolution process of scientific knowledge. The evolution theory has been applied hitherto exclusively to the famous reference problem. It the eye would be incapable seeing something really available it could not establish itself it the reality as such evolutional achievement. Contrary to this view the author states that the cognitive apparatus could survive not due to their achievements in the representations of the external world but rather due to their selfreproductive capabilities. By extrapolation of (...) this view on the level of the epistemology it means that the knowledge itself selects that it can know on the base of that it already knows. The author suggests the principles of such cognitive evolution - the mechanisms of variety, selection and restabilization. The mechanism of variety concerns exclusively some particular operations (i.e. the communicative occurrences). Something innovative (unexpected, out of the ordinary) which has been recently created would occasionally be uttered, suggested, described, and probably printed under sole condition that it is apprehensible and writable. The selection is always based on some structures i.e. on the expectations of some reproductive use of some meaning affitudes. Only the structures can be marked out symbolically: applied to the science it means that they are marked as the true or the false ones. Finely, the stabilization level consists in the continuality of the autopoesis of the scientific communication. (shrink)

Early modern Protestant scholars closely engaged with Islamic thought in more ways than is usually recognized. Among Protestants, Lutheran scholars distinguished themselves as the most invested in the study of Islam and Muslim culture. Mehmet Karabela brings the neglected voices of post-Reformation theologians, primarily German Lutherans, into focus and reveals their rigorous engagement with Islamic thought. Inspired by a global history approach to religious thought, Islamic Thought Through Protestant Eyes offers new sources to broaden the conventional interpretation of the Reformation (...) beyond a solely European Christian phenomenon. -/- Based on previously unstudied dissertations, disputations, and academic works written in Latin in the seventeenth and eighteenth centuries, Karabela analyzes three themes: Islam as theology and religion; Islamic philosophy and liberal arts; and Muslim sects (Sunni and Shi‘a). This book provides analyses and translations of the Latin texts as well as brief biographies of the authors. -/- These texts offer insight into the Protestant perception of Islamic thought for scholars of religious studies and Islamic studies as well as for general readers. Examining the influence of Islamic thought on the construction of the Protestant identity after the Reformation helps us to understand the role of Islam in the evolution of Christianity. (shrink)

Historical language change (), like evolution itself, is a fact; and its implications for the biological evolution of the human capacity for language acquisition () have been ably explored by many contemporary theorists. However, Christiansen & Chater's (C&C's) revolutionary call for a replacement of phylogenetic models with glossogenetic cultural models is based on an inadequate understanding of either. The solution to their lies before their eyes, but they mistakenly reject it due to a supposed Gene/;culture co-evolution poses (...) a series of difficult theoretical and empirical problems that will be resolved by subtle thinking, adequate models, and careful cross-disciplinary research, not by oversimplified manifestos. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Art and Evolution:Spiegelman's The Narrative CorpseBrian BoydIHas art evolved, like opposable thumbs and the whites of our eyes? If it has, will knowing so help us understand better not just art in general but particular works, even works of avant-garde art? Over recent decades many have come to accept that not only have humans evolved from other animals but that many features of their minds and behavior can (...) be explained by the deep past of evolution.1 Yet art remains a puzzle for biocultural analysis. How can we explain art in the hard-nosed terms of biological advantage, especially if it lacks analogies or precursors in other species and seems so pleasurably part of being distinctly human?2Nevertheless we have good reasons to examine whether art might be an adaptation. All cognitively normal individuals in all known societies engage in some form of art, actively or at least passively: music and dance, story, visual art. No one has to be pressured into listening to music on a radio or an iPod. And like language but unlike reading and writing, art develops reliably to a basic level without special training.Art could be what evolutionary biologists call a byproduct, a mere side-effect of our bigger brains or of culture. Yet that seems unlikely. Byproducts by definition do not offer advantages in terms of survival and reproduction: a bodily or behavioral feature whose design offers such advantages we classify as an adaptation. But if art were a byproduct, if it offered on average no advantage in terms of survival and reproduction, many generations of intense evolutionary competition would have eliminated it. If art offered no benefits but exacted the costs it does in time, [End Page 31] energy and resources, it would over many generations have been selected against through the superior fitness of those less inclined to pay such costs, those who preferred to devote their time and energy to securing material or social advantage or simply to save energy by resting.We can understand art in all its varieties, I suggest, as cognitive play with pattern, with multiple, high-intensity patterns. Play exists throughout much of the animal kingdom: in all mammals in which it has been looked for, in birds, and even in invertebrates like octopi. Play, like sleep and dreaming, puzzles and fascinates biologists because it is so widespread and so highly conserved (evolutionary lineages in which play has arisen do not lose it as they continue to evolve) that it must fulfill some function, because it has high costs in energy and risk, and because its functions are not as evident as those of "serious" behavior.3The amount of play in a species correlates highly with the flexibility of its behavior. In all species in which it occurs, play seems remarkably self-rewarding. Animals like pigs and rats play compulsively. In fact this seems the core of play: the self-rewarding nature of play makes animals engage in exuberant, intense behaviors that, under conditions of relative security, allow them to extend their capacities and improve their competence in situations of minimal risk. The skills honed will prove of advantage in real world situations where it is too late to learn on the job, in situations like fight or flight. Because play is compulsive, animals engage in it again and again, incrementally altering their neural wiring, strengthening and speeding up synaptic pathways, improving their capacity and performance.Humans uniquely inhabit what has been called "the cognitive niche":4 we gain most of our advantages from intelligence. We have an appetite for information, and especially for pattern, for information that falls into meaningful arrays from which we can make rich inferences. We therefore like bright, distinct colors, crisp outlines, complex shape or surface design: think of our special fondness for butterflies and flowers. And we have an appetite for open-ended pattern, new kinds of patterns, not only the patterns we have evolved to detect automatically. Vervet monkeys signal to one another in different ways when they see snakes, or leopards, or eagles, because they need to react in different ways to different threats, but they never learn to associate... (shrink)

This book offers a radical challenge to accounts of the common law's development. Contrary to received jurisprudential wisdom, it maintains there is no grand theory which will explain satisfactorily the dynamic interactions of change and stability in the common law's history. Offering original readings of Charles Darwin's and Hans-Georg Gadamer's works, the book shows that law is a rhetorical activity that can only be properly appreciated in its historical and political context; tradition and transformation are locked in a mutually reinforcing (...) but thoroughly contingent embrace. In contrast to the dewy-eyed offerings of much contemporary work, it demonstrates that, like life, law is an organic process rather than a miraculous one. In short, common law is a perpetual work-in-progress - evanescent, dynamic, messy, productive, tantalising, and bottom-up. (shrink)

"Every culture needs to appropriate the universal truth of human suffering," says Fernando Escalante, ". . . to give its own meaning to this suffering, so that human existence is bearable." Originally published in Spanish as La mirada de Dios: Estudios sobre la cultura del sufrimiento, this book is a remarkable study of the evolution of the culture of suffering and the different elements that constitute it, beginning with a reading of Rousseau and ending with the appearance of the (...) Shoah in the Western consciousness--"The memory endures, and this constitutes a fundamental transition for the Western conscience: we have witnessed." Drawing on writings from the Greeks to Cervantes, Voltaire to Nietzsche, and Freud to William James, Escalante combines his considerable knowledge of politics and political theory with a vast array of literary examples to arrive at an intellectual understanding of the history and meaning of suffering. His investigation encompasses the rise of popular politics, the role of messianism in modern nationalism, and the contemporary implications of the Shoah. This book will appeal to a wide audience: students of political theory, humanism, and philosophy, as well as the general reader interested in a glimpse into the mind of a highly original Latin American thinker. (shrink)

This is a short popular version of my views on aesthetic pleasure published in the online magazine, Aeon.

Among non-human animals, crows, octopuses and honeybees are well-known for their complex brains and cognitive abilities. Widening the lens from the idiosyncratic abilities of exemplars like these to those of animals across the phylogenetic spectrum begins to reveal the ancient evolutionary process by which complex brains and cognition first arose in different lineages. The distribution of 35 phenotypic traits in 17 metazoan lineages reveals that brain and cognitive complexity in only three lineages (vertebrates, cephalopod mollusks, and euarthropods) can be attributed (...) to the pivotal role played by body, sensory, brain and motor traits in active visual sensing and visuomotor skills. Together, these pivotal traits enabled animals to transition from largely reactive to more proactive behaviors, and from slow and two-dimensional motion to more rapid and complex three-dimensional motion. Among pivotal traits, high-resolution eyes and laminated visual regions of the brain stand out because they increased the processing demands on and the computational power of the brain by several orders of magnitude. The independent acquisition of pivotal traits in cognitively complex (CC) lineages can be explained as the completion of several multi-trait transitions over the course of evolutionary history, each resulting in an increasing level of complexity that arises from a distinct combination of traits. Whereas combined pivotal traits represent the highest level of complexity in CC lineages, combined traits at lower levels characterize many non-CC lineages, suggesting that certain body, sensory and brain traits may have been linked (the trait-linkage hypothesis) during the evolution of both CC and non-CC lineages. (shrink)

Alexandra Maryanski's cladistic analysis of the last common ancestor to humans and apes reveals biological propensities in hominoids for autonomy, individualism, and weak-tie formation. The evolution of emotional capacities in humans, and the neuroanatomical bases for these capacities, are viewed as representing one of the many compensatory mechanisms for overcoming the low sociality contained in humans’ape ancestry. Speculation on the selection forces involved in hominids’growing capacity to use complex arrays of emotions for mobilizing energy, attuning, sanctioning, moral coding, exchanging (...) and decision-making is conducted with an eye towards redirecting micro-level theorizing in sociology. (shrink)

"You must learn first how to choose a woman" says the character Don Love to the protagonist of the Book of Good Love (fourteenth-century Castile) who has suffered a few setbacks in love. Don Love then goes on to describe in detail the ideal woman, beginning with her physical characteristics: a small head; blond hair; eyebrows set apart, long and arched; a narrow chin; large, prominent, colorful, and shining eyes, with long lashes; small, delicate ears; a long throat; a finely (...) chiseled nose; small, even, sharp and white teeth, close together; red gums; red lips finely-drawn; a small mouth; and her face white, hairless, bright and smooth.1 Formally, this description of the "beautiful woman" is typical of many works .. (shrink)

Remapping Biology with Goethe, Schelling, and Herder recruits a Romantic philosophy of biology into contemporary debates to both integrate the theoretical implications of ecology, evolution, and development, and to contextualize the successes of the Modern Evolutionary Synthesis's gene's-eye-view of biology. The dominant philosophy of biology in the twentieth century was one developed within and for the Modern Evolutionary Synthesis. As biologists like those developing an Extended Evolutionary Synthesis have pushed the limits of this paradigm, fresh philosophical approaches have become (...) necessary. This book makes the case that an organicism developed by the 19th century figures Goethe, Schelling, and Herder offers surprising resources to navigate the contemporary biological and evolutionary terrain. This "metamorphic organicism" resonates with present trends in biological theory that emphasize process, organismal dynamics, ecology, and agency. It also proposes strategies for reintegrating reductive and mechanistic maps of biology, like those of the Modern Evolutionary Synthesis, into richer theoretical representations of life. Drawing from cutting-edge biology, Romantic history, and perspectival pluralist literatures, this integrated history-and-philosophy-of-biology will be of interest to students and scholars interested in the genesis of current theoretical tensions in evolutionary biology, and to those seeking constructive ways to resolve those tensions, including practicing biologists and educators. (shrink)

Modern biology has not yet come to terms with the presence of many organic codes in Nature, despite the fact that we can prove their existence. As a result, it has not yet accepted the idea that the great events of macroevolution were associated with the origin of new organic codes, despite the fact that this is the most parsimonious and logical explanation of those events. This is probably due to the fact that the existence of organic codes in all (...) fundamental processes of life, and in all major transitions in the history of life, has enormous theoretical implications. It requires nothing less than a new theoretical framework, and that kind of change is inevitably slow. There are too many facts to reconsider, too many bits of history to weave together in a new mosaic. But this is what science is about, and the purpose of the present paper is to show that it can be done. More precisely, it is shown that the whole natural history of the brain can be revisited in the light of the organic codes. What is described here is only a bird’s-eye view of brain macroevolution, but it is hoped that the extraordinary potential of the organic codes can nevertheless come through. The paper contains also another message. The organic codes prove that life is based on semiosis, and are in fact the components of organic semiosis, the first and the most diffused form of semiosis on Earth, but not the only one. It will be shown that the evolution of the brain was accompanied by the development of two new types of sign processes. More precisely, it gave origin first to interpretive semiosis, mostly in vertebrates, and then to cultural semiosis, in our species. (shrink)

According to most Evolutionary Psychologists, human moral attitudes are rooted in cognitive modules that evolved in the Stone Age to solve problems of social interaction. A crucial component of their view is that such cognitive modules remain unchanged since the Stone Age, and I question that here. I appeal to evolutionary rollback, the phenomenon where an organ becomes non-functional and eventually atrophies or disappears—e.g. cave-dwelling fish losing their eyes. I argue that even if cognitive modules evolved in the Stone Age (...) to solve problems of social interaction, conditions since then have favoured rollback of those modules. This is because there are institutions that solve those problems—e.g. legal systems. Moreover, evidence suggests that where external resources are available to perform cognitive tasks, humans often use them instead of internal ones. In arguing that Stone Age cognitive modules are unchanged, Evolutionary Psychologists say that evolutionary change is necessarily slow, and that there is high genetic similarity between human populations worldwide. I counter-argue that what is necessarily slow is the building-up of complex mechanisms. Undoing this can be much quicker. Moreover, rollback of cognitive mechanisms need not require any genetic change. Finally, I argue that cross-cultural similarity in some trait need not be rooted in genetic similarity. This is not intended as decisive evidence that rollback has occurred. To finish, I suggest ways we might decide whether moral attitudes are likely to be rooted in unchanged Stone Age modules, given that I have argued that cross-cultural similarity is not enough. (shrink)

Over 10 years ago, Pax‐6 was shown to play an evolutionarily conserved role in controlling eye formation from Drosophila to humans.1 Since then, the identification of an entire cascade of conserved eye determination genes has brought a new understanding to the developmental relationship between the insect compound eye and the vertebrate camera eye.2 Additional studies are now beginning to suggest that even late aspects of eye development, including cell type specification, also share common molecular machinery. In this commentary, I will (...) discuss some of these findings, with a particular focus on the recent study by Dyer et al.3 describing a novel role for the Prox1 transcription factor in specifying horizontal cells in the mouse retina. As Prospero, the Drosophila homolog of Prox1, also participates in retinal cell specification, these data provide a forum for asking new questions concerning pathways that may regulate retinogenesis across evolution. BioEssays 25:921–925, 2003. © 2003 Wiley Periodicals, Inc. (shrink)

Medieval literature often used stock descriptions of beautiful women following a well-established rhetorical canon which included expressions such as "golden hair," "sparkling eyes," or "skin whiter than snow." But were these terms mere rhetorical conventions derived from Latin poetry, as generally accepted by medieval scholars? And what happens if we examine these descriptions at the "literal" level of interpretation? This survey of works in the languages of medieval Iberia shows that the medieval rhetorical portrait synthesized a widely shared ideal of (...) female beauty which coincides with today's male perceptions of female attractiveness, and is consistent with evolved psychological preferences. (shrink)

Although it originated in theological debates, the general will ultimately became one of the most celebrated and denigrated concepts emerging from early modern political thought. Jean-Jacques Rousseau made it the central element of his political theory, and it took on a life of its own during the French Revolution, before being subjected to generations of embrace or opprobrium. James Farr and David Lay Williams have collected for the first time a set of essays that track the evolving history of the (...) general will from its origins to recent times. The General Will: The Evolution of a Concept discusses the general will's theological, political, formal, and substantive dimensions with a careful eye toward the concept's virtues and limitations as understood by its expositors and critics, among them Arnauld, Pascal, Malebranche, Leibniz, Locke, Spinoza, Montesquieu, Kant, Constant, Tocqueville, Adam Smith and John Rawls. (shrink)

While influential works since the 1970s have widely assumed that imitation is an innate skill in both human and non-human primate neonates, recent empirical studies and meta-analyses have challenged this view, indicating other forms of reward-based learning as relevant factors in the development of social behavior. The visual input translation into matching motor output that underlies imitation abilities instead seems to develop along with social interactions and sensorimotor experience during infancy and childhood. Recently, a new visual stream has been identified (...) in both human and non-human primate brains, updating the dual visual stream model. This third pathway is thought to be specialized for dynamics aspects of social perceptions such as eye-gaze, facial expression and crucially for audio-visual integration of speech. Here, we review empirical studies addressing an understudied but crucial aspect of speech and communication, namely the processing of visual orofacial cues and its integration with vocal auditory cues. Along this review, we offer new insights from our understanding of speech as the product of evolution and development of a rhythmic and multimodal organization of sensorimotor brain networks, supporting volitional motor control of the upper vocal tract and audio-visual voices-faces integration. (shrink)

The problem considered in the article that follows has a long and complicated history. The many different solutions proposed reflect the process of development, deepening, and broadening of knowledge as a whole. They correspond to particular levels of knowledge, determining the character of thought both of the times and of particular individuals. Specifically, it is the understanding of the essence of contradiction that governs the entire theoretical exposition that follows, its substance and approximation to truth. Here we shall consider for (...) analysis only one aspect of this fundamental theme — dialectical contradiction in the evolution of knowledge. Thus, for the most part the discussion will be of the laws of thought; only when necessary will we turn to analysis of contradictions in the objective world. It is quite understandable that the process of thought should occur according to the same, more general laws that are operative in the objective world; nevertheless, the manifestation of these laws has its own special features. Therefore, the questions posed by philosophers of antiquity concerning the degree to which reality itself corresponds to the understanding thereof in terms of the exactness, comprehensiveness, and depth of reflection of the objective world by a subject have not lost their timeliness. Such questions include those associated with the phenomenon of contradiction. For example, is contradiction in thought adequate to the contradictions among things ? How does contradiction in thought take shape, and what are its forms and structures? Is the relationship between opposites always a contradiction? Is it possible to solve antinomies, and so forth? An extensive literature has been published on these subjects. There is hardly a philosopher who can avoid them and not express his attitude toward them. As it is impossible, within the confines of an article, to adduce a full list of published works on contradictions, the authors, with an eye to what has been achieved in this sphere, also regard it as undesirable to analyze the diversity of points of view, and will confine themselves to presenting their own understanding of the problem under consideration. (shrink)

In this paper, we claim that Jesus’ command “Love your enemies” is compatible with the fact that (1) for a group of Cooperators and Defectors repeatedly playing the Prisoner’s Dilemma game with each other, Defection will be the dominant strategy, and (2) the Tit-For-Tat strategy, a variant of the Eye-For-Eye principle that Jesus refuted in his Sermon on the Mount, had won Robert Axelrod’s tournaments of Iterated Prisoner’s Dilemma game in the 1980s. By incorporating relevant biblical commands into an informed (...) cooperative strategy, we find that it itself is a strong contender in a secular world of social evolution. (shrink)

Based on the conception of life and semiosis as co-extensive an attempt is given to classify cognitive and communicative potentials of species according to the plasticity and articulatory sophistication they exhibit. A clear distinction is drawn between semiosis and perception, where perception is seen as a high-level activity, an integrated product of a multitude of semiotic interactions inside or between bodies. Previous attempts at finding progressive trends in evolution that might justify a scaling of species from primitive to advanced (...) levels have not met with much success, but when evolution is considered in the light of semiosis such a scaling immediately catches the eye. The main purpose of this paper is to suggest a scaling of this progression in semiotic freedom into a series of distinct steps. The elleven steps suggested are: 1) molecular recognition, 2) prokaryote-eukaryote transformation, 3) division of labor in multicellular organisms, 4) from irritability to phenotypic plasticity, 5) sense perception, 6) behavioral choice, 7) active information gathering, 8) collaboration, deception, 9) learning and social intelligence, 10) sentience, 11) consciousness. In light of this, the paper finally discusses the conceptual framework for biosemiotic evolution. The evolution of biosemiotic capabilities does not take the form of an ongoing composition of simple signs into composite wholes. Rather, it takes the shape of the increasing subdivision and control of a primitive, holophrastic perception-action circuit already committed to “proto-propositions” reliably guiding action already in the most primitive species. (shrink)

The stories -- Preparation for the journey -- The journey -- The view from infinity -- The evolution of the field -- The knower of the field -- Awakening to the knower and transformation of the field.

Agnes Arber (1879-1960) was a British botanist who was a leading plant morphologist during the first half of the 20th century. She also wrote on the history and philosophy of botany. I argue in this article that her philosophical work on form and on how the work of the mind and the eye relate to each other in morphological research are relevant to the science of today. Arber's unusual blend of interests - in botany, history, philosophy, and art - put (...) her in a unique position to examine issues of form. Even her unorthodox ideas on evolution can now be seen as fitting in well with discussions of natural selection as the predominant engine of evolutionary change. Arber's views also throw light on present work dealing with developmental plant genetics and with the study of protein form. I will further argue that her marginal position relative to institutional science, while it may have left her vulnerable to criticism, also made possible her deep philosophical reflections on morphology. (shrink)

How did the human brain evolve so that consciousness of art could develop? In The Psychology of Art and the Evolution of the Conscious Brain, Robert Solso describes how a consciousness that evolved for other purposes perceives and creates art.Drawing on his earlier book Cognition and the Visual Arts and ten years of new findings in cognitive research, Solso shows that consciousness developed gradually, with distinct components that evolved over time. One of these components is an adaptive consciousness that (...) includes the ability to imagine objects that are not present--an ability that allows us to create visual art.Solso describes the neurological, perceptual, and cognitive sequence that occurs when we view art, and the often inexpressible effect that a work of art has on us. He shows that there are two aspects to viewing art: nativistic perception--the synchronicity of eye and brain that transforms electromagnetic energy into neuro-chemical codes--which is "hard-wired" into the sensory-cognitive system; and directed perception, which incorporates personal history and knowledge--the entire set of our expectations and past experiences. Both forms of perception are part of the appreciation of art, and both are products of the evolution of the conscious brain over hundreds of thousands of years.Solso also investigates the related issues of neurological and artistic perception of the human face, the effects of visual illusions, and the use of perspective. The many works of art used as examples are drawn from a wide range of artistic traditions, from ancient Egypt to Africa and India and the European Renaissance. (shrink)

Recently theorists have developed competing accounts of the origins and nature of protolanguage and the subsequent evolution of language. Debate over these accounts is lively. Participants ask: Is music a direct precursor of language? Were the first languages gestural? Or is language continuous with primate vocalizations, such as the alarm calls of vervets? In this article I survey the leading hypotheses and lines of evidence, favouring a largely gestural conception of protolanguage. However, the “sticking point” of gestural accounts, to (...) use Robbins Burling’s phrase, is the need to explain how language shifted to a largely vocal medium. So with a critical eye I consider Michael Corballis’s most recent expression of his ideas about this transition. Corballis’s view is an excellent foil to mine and I present it as such. Contrary to Corballis’s account, and developing Burling’s conjecture that musicality played some role, I argue that the foundations of an evolving musicality provided the means and medium for the shift from gestural to vocal dominance in language. In other words, I suggest that an independently evolving musicality prepared ancient hominins, morphologically and cognitively, for intentional articulate vocal production, enabling the evolution of speech. (shrink)

Offering a systematic analysis of texts produced between the court of Burgundy in the 1470s and the court of the Austrian Habsburgs in the early 1700s, this book traces the development of the idea of successful and competent political behaviour as seen through the eyes of court historians between the fifteenth and the eighteenth centuries.