This work aims to describe how developments in thinking on evolutionary biology require re-assessment of initial rejection of the relevance and applicability of neo-Darwinian evolution to the Gaia hypothesis.

That holobionts are units of selection squares poorly with the observation that microbes are often recruited from the environment, not passed down vertically from parent to offspring, as required for collective reproduction. The taxonomic makeup of a holobiont’s microbial community may vary over its lifetime and differ from that of conspecifics. In contrast, biochemical functions of the microbiota and contributions to host biology are more conserved, with taxonomically variable but functionally similar microbes recurring across generations and hosts. To save what (...) is of interest in holobiont thinking, we propose casting metabolic and developmental interaction patterns, rather than the taxa responsible for them, as units of selection. Such units need not directly reproduce or form parent-offspring lineages: their prior existence has created the conditions under which taxa with the genes necessary to carry out their steps have evolved in large numbers. These taxa or genes will reconstruct the original interaction patterns when favorable conditions occur. Interaction patterns will vary in ways that affect the likelihood of and circumstances under which such reconstruction occurs. Thus, they vary in fitness, and evolution by natural selection will occur at this level. It is on the persistence, reconstruction, and spread of such interaction patterns that students of holobiosis should concentrate, we suggest. This model also addresses other multi-species collectively beneficial interactions, such as biofilms or biogeochemical cycles maintaining all life. (shrink)

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)

Our understanding of what microbes are and how they evolve has undergone many radical shifts since the late nineteenth century, when many still believed that bacteria could be spontaneously generated and most thought microbial “species” (if any) to be unstable and interchangeable in form and function (pleomorphic). By the late twentieth century, an ontology based on single cells and definable species with predictable properties, evolving like species of animals or plants, was widely accepted. Now, however, genomic and metagenomic data show (...) that lateral gene transfer compromises this picture of stability and predictability, and refocuses our attention on multilineage communities. Treating such communities as unstable but identifiable evolving “individuals” makes us again pleomorphists, of a sort. (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 paper, like many before it, aims to solve the “species problem” by declaring it a non-problem. It borrows its title from an earlier article by Jeff Lawrence and its philosophical concepts from Marc Ereshefsky, John Dupré, Peter Godfrey-Smith, Ken Waters, and Jody Hey. The emphasis is on bacteria, but my pragmatic species anti-realist conclusion may be a general one.

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)

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 genome contains elements which are most easily understood as the products of selection operating at the level of the genome, without regard to phenotypic effect. The properties of such elements, and more general implications of molecular biological data, are discussed.

To date, no definition of life has been unequivocally accepted by the scientific community. In frustration, some authors advocate alternatives to standard definitions. These include using a list of characteristic features, focusing on life’s effects, or categorizing biospheres rather than life itself; treating life as a fuzzy category, a process or a cluster of contingent properties; or advocating a ‘wait-and-see’ approach until other examples of life are created or discovered. But these skeptical, operational, and pluralistic approaches have intensified the debate, (...) rather than settled it. Given the failure of even these approaches, we advocate a new strategy. In this paper, we reverse the usual line of reasoning and argue that the “life problem” arises from thinking incorrectly about the nature of life. Scientists most often conceptualize life as a class or kind, with earthly life as a single instance of it. Instead, we advocate thinking about Earth’s Life as an individual, in the way that species are now thought to be. In this view, Life is a monophyletic clade that originated with a last universal common ancestor, and includes all its descendants. We can continue to use the category ‘life’ pragmatically to refer to similarities between various phenomena and Life. But the relevant similarities are a matter of interest and preference, not a matter of fact. The search for other life in the Universe, then, is merely a search for entities that resemble parts of Life in whatever sense astrobiologists find most appealing. This does not mean that the search for evolved complexity elsewhere in the universe or its creation in the lab are futile endeavors, but that debates over whether they count as ‘life’ are. Ironically, finally abandoning the concept ‘life’ may make our searches for evolved complexity more fruitful. We explain why. (shrink)

The purpose of this work is to elaborate an empirically grounded mathematical model of the magnitude of consequences component of "moral intensity", 366, 1991) that can be used to evaluate different ethical situations. The model is built using the analytical hierarchy process and empirical data from the legal profession. One contribution of our work is that it illustrates how AHP can be applied in the field of ethics. Following a review of the literature, we discuss the development of the model. (...) We then illustrate how the model can be used to rank-order three well-known ethical reasoning cases in terms of the magnitude of consequences. The work concludes with implications for theory, practice, and future research. Specifically we discuss how this work extends the previous work by Collins regarding the nature harm variable. We also discuss the contribution this work makes in the development of ethical scenarios used to test hypotheses in the field of business ethics. Finally, we discuss how the model can be used for after-action review, contribute to organizational learning, train employees in ethical reasoning, and aid in the design and development of decision support systems that support ethical reasoning. (shrink)

Whether firms can be said to be moral agents and to have the capacity for moral responsibility has significant practical consequences. In most legal systems in the world, business firms are recognized as persons with the ability to own property, to maintain and defend lawsuits, and to self-organize governance structures. To recognize that these business persons can also act morally or immorally as organizations, however, would justify the imposition of other legal constraints and normative expectations on organizations. In the criminal (...) law, for example, the idea that an organized firm may itself have criminal culpability is accepted in many countries (such as the United States) but rejected in others (such as Germany). This book collects new contributions by leading business scholars in business ethics, philosophy, and related disciplines to extend our understanding of the moral responsibility of firms. (shrink)

The primary appeal of stakeholder theory in business ethics derives from its promise to help solve two large and often morally difficult problems: (1) how to manage people fairly and efficiently and (2) how to determine the extent of a firm's moral responsibilities beyond its obligations to enhance its profits and economic value. This article investigates a variety of conceptual quandaries that stakeholder theory faces in addressing these two general problems. It argues that these quandaries pose intractable obstacles for stakeholder (...) theory which prevent it from delivering on its large promises. Acknowledging that various versions of stakeholder theory have made a contribution in elucidating the complex nature of firms and business decision making, the article argues that it is time to move on. More precise explications of the nature of modern firms focusing on the application of basic moral principles to different business contexts and situations are likely to prove more accurate and useful. (shrink)

In “Generalizing Generalizability in Information Systems Research,” Lee and Baskerville try to clarify generalization and classify it into four types. Unfortunately, their account is problematic. We propose repairs. Central among these is our balance-of-evidence argument that we should adopt the view that Hume’s problem of induction has a solution, even if we do not know what it is. We build upon this by proposing an alternative classification of induction. There are five types of generalization: theoretical, within-population, cross-population, contextual, and temporal, (...) with theoretical generalization being across the empirical and theoretical levels and the rest within the empirical level. Our classification also includes two kinds of inductive reasoning that do not belong to the domain of generalization. We then discuss the implications of our classification for information systems research. (shrink)

Eukaryogenesis is widely viewed as an improbable evolutionary transition uniquely affecting the evolution of life on this planet. However, scientific and popular rhetoric extolling this event as a singularity lacks rigorous evidential and statistical support. Here, we question several of the usual claims about the specialness of eukaryogenesis, focusing on both eukaryogenesis as a process and its outcome, the eukaryotic cell. We argue in favor of four ideas. First, the criteria by which we judge eukaryogenesis to have required a genuinely (...) unlikely series of events 2 billion years in the making are being eroded by discoveries that fill in the gaps of the prokaryote:eukaryote “discontinuity.” Second, eukaryogenesis confronts evolutionary theory in ways not different from other evolutionary transitions in individuality; parallel systems can be found at several hierarchical levels. Third, identifying which of several complex cellular features confer on eukaryotes a putative richer evolutionary potential remains an area of speculation: various keys to success have been proposed and rejected over the five-decade history of research in this area. Fourth, and perhaps most importantly, it is difficult and may be impossible to eliminate eukaryocentric bias from the measures by which eukaryotes as a whole are judged to have achieved greater success than prokaryotes as a whole. Overall, we question whether premises of existing theories about the uniqueness of eukaryogenesis and the greater evolutionary potential of eukaryotes have been objectively formulated and whether, despite widespread acceptance that eukaryogenesis was “special,” any such notion has more than rhetorical value. (shrink)

Although contemporary methods of environmental regulation have registered some significant accomplishments, the current system of environmental law is not working well enough. First the good news: Since the first Earth Day in 1970, smog has decreased in the United States by thirty percent. The number of lakes and rivers safe for fishing and swimming has increased by one-third. Recycling has begun to reduce levels of municipal waste. Ocean dumping has been curtailed. Forests have begun to expand. One success story is (...) the virtual elimination of airborne lead in the United States. Another is the rapid phase-out of ozone-layer depleting chemicals worldwide. Nevertheless, prominent commentators of diverse political persuasions agree in an assessment that conventional models of environmental law have “failed.” Many environmental problems remain unsolved: species extinction, global desertification and deforestation, possible global climate change, and continuing severe air and water pollution in urban areas and poor countries. What is more, successful environmental protection has come only at enormous economic cost. By the year 2000, the Environmental Protection Agency estimates that the United States will spend approximately two percent of its gross national product on environmental pollution control. Academic economists have pointed out the nonsensical inefficiency of many environmental regulations, but usually to no avail. (shrink)

This Derridean reading of Freud asks the question of how we should read Freud with respect to sexual difference and what Derrida considers a radicalized concept of trace, a "scene of writing" of differance ---that is, how we should read Freud with respect to phallogocentrism. Throughout I consider the possible relationships between the "mainstyles" of various psychoanalyses, deconstructions, and feminisms. By analyzing what is most original for Freud---the cause of hysteria, the navel of the dream, the perceptual identity, the primal (...) phantasies, for example---I find that Freud consistently seeks a single origin, a "caput Nili," on which to base a grand narrative. At first this narrative is an etiology of hysteria, but it evolves into a masterplot of sexual development and later into one of humanity. The establishment of an oedipal origin and telos, and the masterplot based on them, moves psychoanalysis toward a totalizing theory, and therefore its openness to chance and something beyond what that theory can master is greatly reduced. ;I approach these topics in terms of a question of the ethics of psychoanalysis. This appropriative or reductive process of Freud's masterplotting is based on what Derrida calls "castration-truth" in his reading of Lacan, "Le facteur de la verite." In contrast to some theorists who appeal to the radical spirit of Freudian theory as a basis for their radicalization of psychoanalysis---specifically Barnaby B. Barratt's Psychoanalysis and the Postmodern Impulse---I argue that Lacan's phallogocentric "return to Freud" is actually a more faithful one since I find both "mainstyles" of these psychoanalyses based on a logic of lack or "castration-truth." I argue throughout that the radical spirit of Freud is at times overemphasized or exaggerated by Derridean theorists---and even Derrida himself, though rarely---and that the dominant specter of Freud is an "establishment" or appropriative one, rather than one which is radical or "other-wise." I connect this trend of Derridean thinkers claiming too much debt to psychoanalysis to these thinkers not taking seriously Freud's commitment and interest in an idealized phylogenetics: "phylo-'genetics.'" Since my establishment of this establishment specter of Freud as the "mainstyle" of Freudian theory itself risks reproducing exactly the kind of appropriative discourse I hope to problematize, I attempt to avoid such a reproduction by considering what remains of the radical spirit of Freudian theory in what might be called a deconstructive "technology of iterability;" a "cyborg-analysis;" or what I call "post-psychoanalysis.". (shrink)

According to standard late medieval Christian thought, humans in heaven are unable to sin, having been “confirmed” in their goodness; and, nevertheless, are more free than humans are in the present life. The rise of voluntarist conceptions of the will in the late thirteenth century made it increasingly difficult to hold onto both claims. Peter Olivi suggested that the impeccability of the blessed was dependent upon a special activity of God upon their wills and argued that this external constraint upon (...) their wills did not eliminate their freedom. Later voluntarists largely agreed with Olivi in attributing the confirmation of the blessed to be dependent upon God’s activity in some way, but disputed the means by which and the extent to which the wills of those in heaven could be said to retain their freedom. This paper will examine various attempts made to either harmonize these two claims or else to soften the blow of rejecting one of them; among the authors surveyed will be Peter John Olivi, John Duns Scotus, Henry of Harclay, William of Ockham, Walter Chatton, and Margurite Porete. (shrink)

The purpose of this work is to elaborate an empirically grounded mathematical model of the magnitude of consequences component of “moral intensity” (Jones, Academy of Management Review 16 (2),366, 1991) that can be used to evaluate different ethical situations. The model is built using the analytical hierarchy process (AHP) (Saaty, The Analytic Hierarchy Process , 1980) and empirical data from the legal profession. One contribution of our work is that it illustrates how AHP can be applied in the field of (...) ethics. Following a review of the literature, we discuss the development of the model. We then illustrate how the model can be used to rank-order three well-known ethical reasoning cases in terms of the magnitude of consequences. The work concludes with implications for theory, practice, and future research. Specifically we discuss how this work extends the previous work by Collins ( Journal of Business Ethics 8 , 1, 1989) regarding the nature of harm variable. We also discuss the contribution this work makes in the development of ethical scenarios used to test hypotheses in the field of business ethics. Finally, we discuss how the model can be used for after-action review, contribute to organizational learning, train employees in ethical reasoning, and aid in the design and development of decision support systems that support ethical reasoning. (shrink)

Biological science uses multiple species concepts. Order can be brought to this diversity if we recognize two key features. First, any given species concept is likely to have a patchwork structure, generated by repeated application of the concept to new domains. We illustrate this by showing how two species concepts (biological and ecological) have been modified from their initial eukaryotic applications to apply to prokaryotes. Second, both within and between patches, distinct species concepts may interact and hybridize. We thus defend (...) a semantic picture of the species concept as a collection of interacting patchwork structures. Thus, although not all uses of the term pick out the same kind of unit in nature, the diversity of uses reflects something more than mere polysemy. We suggest that the emphasis on the use of species to pick out natural units is itself problematic, because that is not the term’s sole function. In particular, species concepts are used to manage inquiry into processes of speciation, even when these processes do not produce clearly delimited species. (shrink)

Lateral gene transfer, the exchange of genetic information between lineages, not only makes construction of a universal Tree of Life difficult to achieve, but calls into question the utility and meaning of any result. Here I review the science of prokaryotic LGT, the philosophy of the TOL as it figured in Darwin’s formulation of the Theory of Evolution, and the politics of the current debate within the discipline over how threats to the TOL should be represented outside it. We could (...) encourage a more realistic and supportive public understanding of evolution by admitting that what we believe in is not a unified meta-theory but a versatile and well-stocked explanatory toolkit. (shrink)

This book investigates how citizens who have differences and disagreements ought to relate to one another in a liberal democracy. Specifically, this book advances a metaphor of citizenship that I call 'role-based constitutional fellowship.' Role-based constitutional fellowship, I argue, is a desirable way for citizens to relate to one another in conditions of modern pluralism, where multiple races, ethnicities, religions, and economic statuses exist ('difference') and where citizens adhere to and pursue competing political interests, creeds, and objectives ('disagreement'). Under role-based (...) constitutional fellowship, citizens share a sense that they are united in a common aim and that they are largely committed to doing what is necessary to pursue that aim - that they are fellows. I describe this sense of fellowship as constitutional and role-based. (shrink)

It has been recently argued by a number of metaphysicians—Trenton Merricks and Eric Olson among them—that any variety of dualism that claims that human persons have souls as proper parts (rather than simply being identical to souls) will face a too-many-thinker problem. In this paper, I examine whether this objection applies to the views of Aquinas, who famously claims that human persons are soul-body composites. I go on to argue that a straightforward readingof Aquinas’s texts might lead us to (...) believe that he falls prey to Merricks and Olson’s objection, but that a more heterodox interpretation reveals a way to avoidthis problem. (shrink)

Among the most widely discussed of William of Ockham’s texts on ethics is his Quodlibet III, q. 14. But despite a large literature on this question, there is no consensus on what Ockham’s answer is to the central question raised in it, specifically, what obligations one would have if one were to receive a divine command to not love God. (Surprisingly, there is also little explicit recognition in the literature of this lack of consensus.) Via a close reading of the (...) text, I argue, contrary to much of the literature, that Ockham believes that if one were given this command, one would be obligated to refrain from loving God and would also be able to fulfill this obligation without any moral wrongdoing. Among other results, this study will help clarify Ockham’s much-discussed claim that loving God is “a necessarily virtuous act.”. (shrink)

In Generalizing Generalizability in Information Systems Research Lee and Baskerville (2003) attempt to clarify generalization and distinguish four types of generalization. Although this is a useful objective, what they call generalization is often not generalization at all in the proper sense of the word. We elucidate generalization by locating their major errors. A main source of these is their failure to understand the depth of Hume’s problem of induction. We give a thorough explication of the problem and then give a (...) solution. Lastly, we propose an alternative taxonomy of generalization: theoretical, within-population, cross-population, contextual, and temporal. (shrink)

An overview of debates in ethical theory within Christian Scholasticism in the decades after Thomas Aquinas.

Luther's struggle with the forces and influences of late medieval culture for what he believed contributed to the birth of a new age.

In the twenty-seven questions translated in this volume, most never before published in English, William of Ockham considers a host of theological and philosophical issues, including the nature of virtue and vice, the relationship between the intellect and the will, the scope of human freedom, the possibility of God's creating a better world, the role of love and hatred in practical reasoning, whether God could command someone to do wrong, and more.

Category-specific impairments of object recognition and naming are among the most intriguing disorders in neuropsychology, affecting the retrieval of knowledge about either living or nonliving things. They can give us insight into the nature of our representations of objects: Have we evolved different neural systems for recognizing different categories of object? What kinds of knowledge are important for recognizing particular objects? How does visual similarity within a category influence object recognition and representation? What is the nature of our semantic knowledge (...) about different objects? We review the evidence on category-specific impairments, arguing that deficits even for one class of object cannot be accounted for in terms of a single information processing disorder across all patients; problems arise at contrasting loci in different patients. The same apparent pattern of impairment can be produced by damage to different loci. According to a new processing framework for object recognition and naming, the hierarchical interactive theory, we have a hierarchy of highly interactive stored representations. HIT explains the variety of patients in terms of lesions at different levels of processing and different forms of stored knowledge used both for particular tasks and for particular categories of object. Key Words: category-specific deficits; functional imaging; hierarchical models; interactive activation models; neuropsychology; object recognition; perceptual and functional knowledge. (shrink)

Diverse living systems possess the capacity for regeneration; that is, they can under some circumstances repair, re-produce, and maintain themselves in the face of disturbance or damage. Think of systems as diverse as forests, microbial biofilms, corals, salamanders, hydra, and human skin cells. This capacity is fundamental to life—without it, many biological systems would be too fragile to cope with stress and would frequently collapse—but because it is multiply realized in wildly different living systems at many scales, finding a common (...) understanding may seem futile, and in fact research has proceeded along independent lines. For example, the sciences of organismal regeneration and ecological regeneration appear to have little more than a nominal relationship. Progress towards unification can be made, we think, by turning to evolutionary theory, specifically by synthesizing recent discussions of the evolution of individuals versus collectives with older literature about replicators versus interactors. This allows us to provide a partial answer in response to MacCord and Maienschein’s call for “basic units and mechanisms” of regeneration, relevant when that process is “adaptive.” We argue that the basics of adaptive regeneration can be understood and generalized through a modification of David Hull’s replicator-interactor framework. (shrink)

This paper states two sets of axioms sufficient for extensive measurement. The first set, like previously published axioms, requires that each of the objects measured must be classifiable as either greater than, or less than, or indifferent to each other object. The second set, however, requires only that any two objects be classifiable as either indifferent or different, and does not need any information about which object is greater. Each set of axioms produces an extensive scale with the usual properties (...) of additivity and uniqueness except for unit. Moreover, the axioms imply Weber's Law: whether two objects are indifferent depends only upon the ratio of their scale values. (shrink)

Understanding community-level selection using Lewontin’s criteria requires both community-level inheritance and community-level heritability, and in the discipline of community and ecosystem genetics, these are often conflated. While there are existing studies that show the possibility of both, these studies impose community-level inheritance as a product of the experimental design. For this reason, these experiments provide only weak support for the existence of community-level selection in nature. By contrast, treating communities as interactors (in line with Hull’s replicator-interactor framework or Dawkins’s idea (...) of the “extended phenotype”) provides a more plausible and empirically supportable model for the role of ecological communities in the evolutionary process. (shrink)

Some self-declared defenders of democracy maintain that a suspension of the ‘cosmopolitan agenda’ is necessary to blunt the appeal of insurgent right wing populism. I argue that cosmopolitans should support this ‘inward turn’ when doing so helps to preserve the long-term viability of that agenda. Cosmopolitans must certainly motivate citizens of different countries to support it. However, they must also encourage those citizens to support democracy and inclusion at home, for support for the cosmopolitan agenda becomes less likely in its (...) absence. Therefore, cosmopolitans should support the inward turn when doing so makes it harder for right wing populists to erode popular support for democracy, inclusion, and the cosmopolitan agenda. Practically speaking, then, cosmopolitanism should not look that different from liberal nationalism in the short-term. Unlike liberal nationalists, though, cosmopolitans should only prioritize the defense of democracy and inclusion at home for practical reasons – not normative reasons. Accordingly, cosmopolitanism should look different from liberal nationalism in the long run, but not radically so. I engage with the empirical literature on public opinion and pay special attention to Lea Ypi’s argument for ‘statist cosmopolitanism.’. (shrink)

This paper investigates the complexity hypothesis in microbial evolutionary genetics from a philosophical vantage. This hypothesis, in its current version, states that genes with high connectivity are likely to be resistant to being horizontally transferred. We defend four claims. There is an important distinction between two different ways in which a gene family can persist: vertically and horizontally. There is a trade-off between these two modes of persistence, such that a gene better at achieving one will be worse at achieving (...) the other. At least some genes are likely to experience selection favoring increased transferability. One consequence of this can be encapsulated as the “simplicity hypothesis”: horizontally persisting genes will experience selection favoring reduced connectivity. In order to make sense of the simplicity hypothesis, we need to consider evolutionary populations that transcend species boundaries. Vertical and horizontal persistence are therefore not two competing ways of succeeding at the same game, but involve playing two different games altogether. The complexity hypothesis can be understood in terms of two related notions: entrenchment and Cuvierian functionalism. This framing reveals previously unrecognized and philosophically interesting connections between reasoning about deep conservation and horizontal transfer. (shrink)

William Ockham held that, in addition to written and spoken language, there exists a mental language, a structured representational system common to all thinking beings. Here I present and evaluate an argument found in several places across Ockham's corpus, wherein he argues that positing a mental language is necessary for the nominalist to meet certain ontological constraints imposed by Aristotle’s account of scientific demonstration.