The evidence compiled in the target article demonstrates that the assumptions of cultural group selection theory are often met, and it is therefore a useful framework for generating plausible hypotheses. However, more can be said about how we can test the predictions of CGS hypotheses against competing explanations using historical, archaeological, and anthropological data.

An examination of Michael Dummett's views on meaning.

In recent years, live imaging has been adopted to study stem cells in their native environment at cellular resolution. In the skeletal muscle field, this has led to visualising the initial events of muscle repair in mouse, and the entire regenerative response in zebrafish. Here, we review recent discoveries in this field obtained from live imaging studies. Tracking of tissue resident stem cells, the satellite cells, following injury has captured the morphogenetic dynamics of stem/progenitor cells as they facilitate repair. Asymmetric (...) satellite cell division generated a clonogenic progenitor pool, providing in vivo validation for this mechanism. Furthermore, there is an emerging role of stem/progenitor cell guidance at the injury site by cellular protrusions. This review concludes that live imaging is a critical tool for discovering the distinct processes that occur during regeneration, emphasising the importance of imaging in diverse animal models to capture the entire scope of stem cell functions. (shrink)

The recently uncovered role of Fukutin‐related protein (FKRP) in fibronectin glycosylation has challenged our understanding of the basis of disease pathogenesis in the muscular dystrophies. FKRP is a Golgi‐resident glycosyltransferase implicated in a broad spectrum of muscular dystrophy (MD) pathologies that are not fully attributable to the well‐described α‐Dystroglycan hypoglycosylation. By revealing a new role for FKRP in the glycosylation of fibronectin, a modification critical for the development of the muscle basement membrane (MBM) and its associated muscle linkages, new possibilities (...) for understanding clinical phenotype arise. This modification involves an interaction between FKRP and myosin‐10, a protein involved in the Golgi organization and function. These observations suggest a FKRP nexus exists that controls two critical aspects to muscle fibre integrity, both fibre stability at the MBM and its elastic properties. This review explores the new potential disease axis in the context of our current knowledge of muscular dystrophies. (shrink)

In approaching Ch. 4 of Saving Truth from Paradox, it might be helpful first to revisit Curry’s original paper, and to revisit Lukasiewicz too, to provide more of the scenesetting that Field doesn’t himself fill in. So in §1 I’ll say something about Curry, in §2 we’ll look at what Lukasiewicz was up to in his original three-valued logic, and in §3 we’ll look at the move from a three-valued to a many-valued Lukasiewicz logic. In §4, I move on to (...) announce a theorem by H´. (shrink)

Film and the Emotions explores the complicated relationship between filmed entertainment, such as movies and television shows, and our capacity to feel emotions. This volume of The Midwest Studies in Philosophy covers topics such as the role of imagination in our capacity to respond emotionally to films, how emotions felt in response to films relate to emotions felt about real events, and the moral implications of responding emotionally to fictions, among others. This collection includes nineteen original articles from experts on (...) film and emotion, including Noel Carroll, Gregory Currie, Susan Feagin, Stacie Friend, Robert Hopkins, Peter Lamarque and Peter Goldie, Derek Matravers, Carl Plantinga, and Murray Smith. (shrink)

A common approach to drawing boundary between fiction and non-fiction is by appeal to the kinds of speech acts performed by authors of works of the respective categories. Searle, for example, takes fiction to be the product of illocutionary pretense of various kinds on the part of authors and non-fiction to be the product of genuine illocutionary action.1 Currie, in contrast, takes fiction to be the product of sui generis fictional illocutionary action on the part of authors and non-fiction (...) to be the product of assertion and other familiar kinds of illocutionary action.2 The central thesis of this paper is that the speech act approach to fictionality is simply a non-starter. Now it is, of course, commonplace to note that approaches of this kind run into difficulty accommodating nonliterary fictions3 and uncomposed or authorless fictions. What will be argued here, however, is that speech acts analyses are inadequate even understood narrowly as accounts of composed literary fiction. And the reason is that they fail to adequately attend to the distinction between composition and storytelling. (shrink)

I have been dissatisfied with Walton’s make-believe model of appreciator engagement with fiction ever since my first encounter with it as a graduate student.1 What I have always objected to is not the suggestion that such engagement is broadly speaking imaginative; rather, it is the suggestion that it specifically involves de se imaginative activity on the part of appreciators. That is, while I concede that appreciators imagine (de re) of the fictional works they experience that they are thus and so, (...) I deny that they imagine (de se) experiencing an object that is thus and so.2 The main source of my dissatisfaction with the make-believe model is that it is phenomenologically unfamiliar; I have never been aware of de se imaginings of the requisite sort while appreciatively engaged with fiction.3 Of course, one could argue that it nevertheless occurs, albeit sub-consciously. But in order for this manoeuvre to be plausible, it would have to be established that there are appreciative phenomena that can only (or best) be explained by the supposition that appreciators engage in de se imagining, and which cannot be adequately explained by the supposition that they merely engage in de re imagining. Currie, for example, has argued that we need to make the former supposition in order to find a solution to the “problem of personality,” the problem of explaining why our emotional reactions to the plights of fictional characters often differ from our reactions to the similar plights of actual people.4 What I want to argue in this paper is that Currie’s defense of de se imaginative engagement is.. (shrink)

Fictional truth is commonly analyzed in terms of the speech acts or propositional attitudes of a teller. In this paper, I investigate Lewis’s counterfactual analysis in terms of felicitous narrator assertion, Currie’s analysis in terms of fictional author belief, and Byrne’s analysis in terms of ideal author invitations to make-believe—and find them all lacking. I propose instead an analysis in terms of the revelations of an infelicitous narrator.

Currie’s (2010) argument that “i-desires” must be posited to explain our responses to fiction is critically discussed. It is argued that beliefs and desires featuring ‘in the fiction’ operators—and not sui generis imaginings (or "i-beliefs" or "i-desires")—are the crucial states involved in generating fiction-directed affect. A defense of the “Operator Claim” is mounted, according to which ‘in the fiction’ operators would be also be required within fiction-directed sui generis imaginings (or "i-beliefs" and "i-desires"), were there such. Once we appreciate (...) that even fiction-directed sui generis imaginings would need to incorporate ‘in the fiction’ operators, the main appeal of the idea that sui generis imaginings (or "i-beliefs" or "i-desires") are at work in fiction-appreciation dissipates. [This is Chapter 10 of Explaining Imagination (OUP, 2020)]. (shrink)

It seems that the Truth-teller is either true or false, but there is no accepted principle determining which it is. From this point of view, the Truth-teller is a hypodox. A hypodox is a conundrum like a paradox, but consistent. Sometimes, accepting an additional principle will convert a hypodox into a paradox. Conversely, in some cases, retracting or restricting a principle will convert a paradox to a hypodox. This last point suggests a new method of avoiding inconsistency. This article provides (...) a significant example. The Liar paradox can be defused to a hypodox by relatively minimally restricting three principles: the T-schema, substitution of identicals and universal instantiation. These restrictions are not arbitrary. For each, I identify the source of a contradiction given some presumptions. Then I propose each restriction as a reasonable way to deal with that source of contradiction. (shrink)

One way of resolving a paradox is to defuse it to a hypodox. This way is relatively unknown though. The goal of this paper is to explain this way with varied examples. The hypodoxes are themselves a broad class: both the Truth-teller and the 21st birthday of someone born on 29th February can be construed as hypodoxes. The most familiar kind of relation between paradoxes and hypodoxes is exemplified by the relation between the Liar and the Truth-teller. This article concerns (...) a second kind where a paradox is defused to a hypodox by restricting or rejecting some granted principles. The Liar paradox has this second kind of relation to a Liar hypodox, which will be introduced. In some cases, defusing a paradox to a hypodox is only a partial resolution, as the hypodox itself may then need resolving. Even so, such a partial resolution decomposes a complex problem into more easily understood problems. Moreover, I compare the result of defusing a paradox to a hypodox with the results of resolving paradoxes in other ways. I give four examples. The first is mainly pedagogic, concerning a birthday. The second is a lightweight legal case, presenting a parking voucher paradox. The third is a formal system in which a Liar and Liar-like sentences are hypodoxical. The fourth is a philosophical critique of ways of solving Bertrand’s chord paradox. (shrink)

This paper deals with Popper's little-known work on deductive logic, published between 1947 and 1949. According to his theory of deductive inference, the meaning of logical signs is determined by certain rules derived from ?inferential definitions? of those signs. Although strong arguments have been presented against Popper's claims (e.g. by Curry, Kleene, Lejewski and McKinsey), his theory can be reconstructed when it is viewed primarily as an attempt to demarcate logical from non-logical constants rather than as a semantic foundation for (...) logic. A criterion of logicality is obtained which is based on conjunction, implication and universal quantification as fundamental logical operations. (shrink)

Reminiscences of Peter, by P. Oppenheim.--Natural kinds, by W. V. Quine.--Inductive independence and the paradoxes of confirmation, by J. Hintikka.--Partial entailment as a basis for inductive logic, by W. C. Salmon.--Are there non-deductive logics?, by W. Sellars.--Statistical explanation vs. statistical inference, by R. C. Jeffre--Newcomb's problem and two principles of choice, by R. Nozick.--The meaning of time, by A. Grünbaum.--Lawfulness as mind-dependent, by N. Rescher.--Events and their descriptions: some considerations, by J. Kim.--The individuation of events, by D. Davidson.--On properties, (...) by H. Putnam.--A method for avoiding the Curry paradox, by F. B. Fitch.--Publications (1934-1969) by Carl G. Hempel (p. [266]-270). (shrink)

We know, since Descartes (1641), that exercises of sensory imagining (S-imagining) are not purely imagistic: they possess multiple aspects. This much is agreed upon among philosophers but, when the question of the intentionality of S-imaginings arises, agreement seems to unravel. -/- According to the Two Content View (TCV), S-imagining “has two kinds of content, qualitative content and assigned content” (Kung, 2010:632) – e.g., my image of an apple is about both (i) shapes and colors and (ii) about the fact that (...) it is an apple, rather than a perfect imitation thereof. Advocates of TCV claim that the imagistic content does represent something, but it is not enough to individuate the imagining of an A rather than a B (Kung, 2010; Langland-Hassan, 2015; Martin, 2002; Noordhof, 2002; Peacocke, 1985; Tooming, 2018; White, 1990). -/- Some, however, have expressed skepticism about TCV. As Sartre claims, “despite some prejudices […] when I produce in myself the image of Pierre, it is Pierre who is the object of my current consciousness.” (1940/2010:4) The intentional object of our S-imaginings is exhausted by a single content treated in a specific way (Currie & Ravenscroft, 2002; Goldman, 2006; Hutto, 2015; Mulligan, 1999; Soteriou, 2013; Stock, n.d.; Wiltsher, 2016,2019). -/- In the following, (1) I sketch one of the most efficient pleas for the TCV by Peter Langland-Hassan, (2) I give two reasons to doubt the decisiveness of his arguments, and (3) suggest that S-imagining can be captured by the attitude/content distinction. (shrink)

We argue that narratives are central to the success of historical reconstruction. Narrative explanation involves tracing causal trajectories across time. The construction of narrative, then, often involves postulating relatively speculative causal connections between comparatively well-established events. But speculation is not always idle or harmful: it also aids in overcoming local underdetermination by forming scaffolds from which new evidence becomes relevant. Moreover, as our understanding of the past’s causal milieus become richer, the constraints on narrative plausibility become increasingly strict: a narrative’s (...) admissibility does not turn on mere logical consistency with background data. Finally, narrative explanation and explanation generated by simple, formal models complement one another. Where models often achieve isolation and precision at the cost of simplification and abstraction, narratives can track complex changes in a trajectory over time at the cost of simplicity and precision. In combination both allow us to understand and explain highly complex historical sequences. (shrink)

Chris Frith has argued that a loss of the sense of agency is central to schizophrenia. This suggests a connection between hallucinations and delusions on the one hand, and the misidentification of the subject’s imaginings as perceptions and beliefs on the other. In particular, understanding the mechanisms that underlie imagination may help us to explain the puzzling phenomena of thought insertion and withdrawal. Frith sometimes states his argument in terms of a loss of metarepresentational capacity in schizophrenia. I argue that (...) this formulation is unhelpful. (shrink)

Historical scientists frequently face incomplete data, and lack direct experimental access to their targets. This has led some philosophers and scientists to be pessimistic about the epistemic potential of the historical sciences. And yet, historical science often produces plausible, sophisticated hypotheses. I explain this capacity to generate knowledge in the face of apparent evidential scarcity by examining recent work on Thylacoleo carnifex, the ‘marsupial lion’. Here, we see two important methodological features. First, historical scientists are methodological omnivores, that is, they (...) construct purpose-built epistemic tools tailored to generate evidence about highly specific targets. This allows them to produce multiple streams of independent evidence and thus maximize their epistemic reach. Second, investigative scaffolding: research proceeds in a piece-meal fashion, information only gaining evidential relevance once certain hypotheses are well supported. I illustrate scaffolding in a discussion of the nature of functional ascription in paleobiology. Frequently, different senses of ‘function’ are not discriminated during paleobiological investigation—something which can mar adaptationist investigations of extant organisms. However, I argue that, due to scaffolding, conflating senses of ‘function’ can be the right thing to do. Coarse-grained functional hypotheses are required before it is clear what evidence could discriminate between more fine-grained ones. I draw on omnivory and scaffolding to argue that pessimists make a bad empirical bet. It is a bad idea to bet against the epistemic fortunes of such opportunistic and resourceful scientists, especially when we have reason to think we will systematically underestimate the amount of evidence ultimately available to them. (shrink)

Abstract‘Behavioural modernity’ isn’t what it used to be. Once conceived as an integrated package of traits demarcated by a clear archaeological signal in a specific time and place, it is now disparate, archaeologically equivocal, and temporally and spatially spread. In this paper we trace behavioural modernity’s empirical and theoretical developments over the last three decades, as surprising discoveries in the material record, as well the reappraisal of old evidence, drove increasingly sophisticated demographic, social and cultural models of behavioural modernity. We (...) argue, however, that some approaches to identifying and categorizing modernity have not kept up with this new picture. This is due to what we term ‘Rubicon expectations’: classificatory and interpretive practices which look for or assume clear demarcations in behavioural and cultural processes. We develop a philosophical account of ‘investigative disintegration’ to capture how our understanding of behavioural modernity has changed, and how Rubicon-based practices have become inadequate. Disintegration, in the form we analyse, occurs when scientists’ conception of a phenomenon shifts sufficiently to reshape an investigation’s epistemic structure. For behavioural modernity, the explanatory weight which once lay on identifying ‘switch-points’ in the innate suite of hominin cognitive capacities, lies now in understanding the social and demographic environments that were capable of sustaining and nourishing more complex material cultures. Finally, we argue that the phenomenon itself has not disintegrated to the point that we are left with no interesting explanandum: for all its mosaic, disparate nature, there are still good reasons for behavioural modernity to retain its central place in investigation of our species' origins. (shrink)

Cognitive archaeologists infer from material remains to the cognitive features of past societies. We characterize cognitive archaeology in terms of trace-based reasoning, which in the case of cognitive archaeology involves inferences drawing upon background theory linking objects from the archaeological record to cognitive features. We analyse such practices, examining work on cognitive evolution, language, and musicality. We argue that the central epistemic challenge for cognitive archaeology is often not a paucity of material remains, but insufficient constraint from cognitive theories. However, (...) we also argue that the success of cognitive archaeology does not necessarily require well-developed cognitive theories: Success might instead lead to them. (shrink)

The comparative method grants epistemic access to the biological past. Comparing lineages provides empirical traction on both hypotheses about particular lineages and models of trait evolution. Understanding this evidential role is important. Although philosophers have recently turned their attention to relations of descent, little work exists exploring the status of evidence from convergences. I argue that, where they exist, convergences play a central role in the confirmation of adaptive hypotheses. I focus on ‘analogous inferences’, show how such inferences ought to (...) be analysed and suggest three methods for strengthening their evidential weight. 1 Introduction2 Analogous Inferences2.1 Adaptive explanations and analogies2.2 Analogous inferences2.3 Scope, grain, and specificity3 Parallel Modelling, Integrated Explanations, and Convergent Modelling3.1 Parallel modelling3.2 Integrated explanations3.1 Convergent modelling4 Conclusion. (shrink)

‘Gouldian arguments’ appeal to the contingency of a scientific domain to establish that domain’s autonomy from some body of theory. For instance, pointing to evolutionary contingency, Stephen Jay Gould suggested that natural selection alone is insufficient to explain life on the macroevolutionary scale. In analysing contingency, philosophers have provided source-independent accounts, understanding how events and processes structure history without attending to the nature of those events and processes. But Gouldian Arguments require source-dependent notions of contingency. An account of contingency is (...) source-dependent when it is indexed to some pattern and some process. Positions like Gould’s do not turn on the mere fact of life’s contingency—that life’s shape could have been different due to its sensitivity to initial conditions, path-dependence or stochasticity. Rather, Gouldian arguments require that the contingency is due to particular kinds of processes: in this case, those which microevolutionary theory cannot account for. This source-dependent perspective clarifies both debates about the nature and importance of contingency, and empirical routes for testing Gould’s thesis. (shrink)

Pluralism about scientific method is more-or-less accepted, but the consequences have yet to be drawn out. Scientists adopt different methods in response to different epistemic situations: depending on the system they are interested in, the resources at their disposal, and so forth. If it is right that different methods are appropriate in different situations, then mismatches between methods and situations are possible. This is most likely to occur due to method bias: when we prefer a particular kind of method, despite (...) that method clashing with evidential context or our aims. To explore these ideas, we sketch a kind of method pluralism which turns on two properties of evidence, before using agent-based models to examine the relationship between methods, epistemic situations, and bias. Based on our results, we suggest that although method bias can undermine the efficiency of a scientific community, it can also be productive through preserving a diversity of evidence. We consider circumstances where method bias could be particularly egregious, and those where it is a potential virtue, and argue that consideration of method bias reveals that community standards deserve a central place in the epistemology of science. (shrink)

Ethnographic analogy, the use of comparative data from anthropology to inform reconstructions of past human societies, has a troubled history. Archaeologists often express concern about, or outright reject, the practice—and sometimes do so in problematically general terms. This is odd, as the use of comparative data in archaeology is the same pattern of reasoning as the ‘comparative method’ in biology, which is a well-developed and robust set of inferences which play a central role in discovering the biological past. In pointing (...) out this continuity, I argue that there is no ‘special pleading’ on the part of archaeologists in this regard: biologists must overcome analogous epistemic difficulties in their use of comparative data. I then go on to emphasize the local, empirically tractable ways in which particular ethnographic analogies may be licensed. (shrink)

Shaun Gallagher and Dan Hutto claim that those once bitter rivals, simulation theory and theory-theory, are now to be treated as partners in crime. It's true that the debate has become more nuanced, with detailed suggestions abroad as to how these two approaches might peaceably divide the field. And there is common ground between them, at least to the extent that they agree on what needs to be explained. But I see no fatal flaw in what they share. In particular, (...) I reject the idea that most interpersonal understanding can be accounted for without the postulation of mechanisms for inferring beliefs and desires. I also query the claim that simulation mechanisms have a very limited explanatory scope, and argue for the existence of such mechanisms at sub-personal levels. I suggest that Gallagher and Hutto's strictures against false belief tests are unwarranted, and their conclusions about the role of narrative in interpersonal understanding are unfounded. (shrink)

Peter Adamson offers an accessible, humorous tour through a period of eight hundred years when some of the most influential of all schools of thought were formed: from the third century BC to the sixth century AD. He introduces us to Cynics and Skeptics, Epicureans and Stoics, emperors and slaves, and traces the development of Christian and Jewish philosophy and of ancient science. Chapters are devoted to such major figures as Epicurus, Lucretius, Cicero, Seneca, Plotinus, and Augustine. But in (...) keeping with the motto of the series, the story is told 'without any gaps, ' providing an in-depth look at less familiar topics that remains suitable for the general reader. For instance, there are chapters on the fascinating but relatively obscure Cyrenaic philosophical school, on pagan philosophical figures like Porphyry and Iamblichus, and extensive coverage of the Greek and Latin Christian Fathers who are at best peripheral in most surveys of ancient philosophy. A major theme of the book is in fact the competition between pagan and Christian philosophy in this period, and the Jewish tradition also appears in the shape of Philo of Alexandria. Ancient science is also considered, with chapters on ancient medicine and the interaction between philosophy and astronomy. Considerable attention is paid also to the wider historical context, for instance by looking at the ascetic movement in Christianity and how it drew on ideas from Hellenic philosophy. From the counter-cultural witticisms of Diogenes the Cynic to the subtle skepticism of Sextus Empiricus, from the irreverent atheism of the Epicureans to the ambitious metaphysical speculation of Neoplatonism, from the ethical teachings of Marcus Aurelius to the political philosophy of Augustine, the book gathers together all aspects of later ancient thought in an accessible and entertaining way. (shrink)

Role realism is a promising realist theory of fictional names. Different versions of this theory have been suggested by Gregory Currie, Peter Lamarque, Stein Haugom Olsen, and Nicholas Wolterstorff. The general idea behind the approach is that fictional characters are to be analysed in terms of roles, which in turn can be understood as sets of properties. I will discuss several advantages and disadvantages of this approach. I will then propose a novel hyperintensional version of role realism, according (...) to which fictional names are analysed in terms of individual concepts that cannot be matched by a reference. I will argue that this account avoids the main disadvantages of standard role realism. (shrink)

Thinking of models in science as fictions is said to be helpful, not merely because models are known or assumed to be false, but because work on the nature of fiction helps us understand what models are and how they work. I am unpersuaded. For example, instead of trying to assimilate truth-in-a model to truth-in-fiction we do better to see both as special and separate cases of the more general notion truth-according-to-a-corpus. Does enlightenment go the other way? Do we better (...) understand fiction's capacity to generate knowledge by thinking of it as a kind of modelling? If we see, as we should, fictions and models are parts of larger patterns of cognitive activity that include institutional frameworks, the best answer is no. (shrink)

Studie over het werk van de Duitse wijsgeer Friedrich Ludwig Gottlob Frege (1848-1925).

Some of us have suggested that what fiction makers do is offer us things to imagine, that this is what is distinctive of fiction and what distinguishes it from narrative-based but assertive activities such as journalism or history. Some of us hold, further, that it is the maker's intention which confers fictional status. Many, I think, feel the intuitive appeal of this idea at the same time as they sense looming problems for any proposal about fiction's nature based straightforwardly on (...) the identification of fiction with the to-be-imagined. I formulate a very weak version of the proposal which is not vulnerable to some objections recently presented. My formulation is in terms of supervenience. But while this version is weak, it is also quite precise, and its precision brings into view certain other problems which have not so far been attended to. To the extent that these problems are serious, the prospects for an intentional theory of fiction look, I am sorry to say, poor; the version susceptible to the objections is weak, and anything weaker still but not so susceptible could hardly be thought of as a theory of fiction, though it might supplement such a theory. (shrink)

Both paleobiology and investigations of ‘major evolutionary transitions’ are intimately concerned with the macroevolutionary shape of life. It is surprising, then, how little studies of major transitions are informed by paleontological perspectives and. I argue that this disconnect is partially justified because paleobiological investigation is typically ‘phenomena-led’, while investigations of major transitions are ‘theory-led’. The distinction turns on evidential relevance: in the former case, evidence is relevant in virtue of its relationship to some phenomena or hypotheses concerning those phenomena; in (...) the latter, evidence is relevant in virtue of providing insights into, or tests of, an abstract body of theory. Because paleobiological data is by-and-large irrelevant to the theory which underwrites the traditional conception of major transitions, it is of limited use to that research program. I suggest that although the traditional conception of major transitions is neither ad-hoc or problematically incomplete, its promise of providing unificatory explanations of the transitions is unlikely to be kept. Further, examining paleobiological investigations of mass extinctions and organogenesis, I further argue that whether or not transitions in paleobiology count as ‘major’ turns on how we conceive of major transitions ; although major transitions potentially have a unified theoretical basis, recent developments suggest that investigations are becoming increasingly phenomena-led; adopting phenomena-led investigations maximizes the evidence available to paleobiologists. (shrink)

In the history of philosophy, few topics are so relevant to today's cultural and political landscape as philosophy in the Islamic world. Yet, this remains one of the lesser-known philosophical traditions. In this Very Short Introduction, Peter Adamson explores the history of philosophy among Muslims, Jews, and Christians living in Islamic lands, from its historical background to thinkers in the twentieth century.Introducing the main philosophical themes of the Islamic world, Adamson integrates ideas from the Islamic and Abrahamic faiths to (...) consider the broad philosophical questions that continue to invite debate: What is the relationship between reason and religious belief? What is the possibility of proving God's existence? What is the nature of knowledge? Drawing on the most recent research in the field, this book challenges the assumption of the cultural decline of philosophy and science in the Islamic world by demonstrating its rich heritage and overlap with other faiths and philosophies. (shrink)

Can we be realists about a general category but pluralists about concepts relating to that category? I argue that paleobiological methods of delineating species are not affected by differing species concepts, and that this underwrites an argument that species concept pluralists should be species category realists. First, the criteria by which paleobiologists delineate species are ‘indifferent’ to the species category. That is, their method for identifying species applies equally to any species concept. To identify a new species, paleobiologists show that (...) interspecies processes, such as phenotypic plasticity, sexual dimorphism, or ontogenetic diversity, are a worse explanation of the variance between specimens than intraspecies processes. As opposed to operating under a single or plurality of species concepts, then, paleobiologists use abductive inferences, which would be required regardless of any particular species concept. Second, paleobiologists are frequently interested in large-scale, long-term morphological patterns in the fossil record, and resolving the fine-grained differences which result from different species concepts is irrelevant at those scales. I argue that this claim about paleobiological practice supports what I call ‘indifference realism’ about the species category. The indifference realist argues that when legitimate investigation is indifferent to a plurality of concepts, we should be realists about the category those concepts pertain to. (shrink)

Re-analysis of the data provided in the target article reveals a lack of evidence for a strong, universal relationship between parasite stress and the variables relating to sociality. Furthermore, even if associations between these variables do exist, the analyses presented here do not provide evidence for Fincher & Thornhill's (F&T's) proposed causal mechanism.