Throughout his life, Kant was concerned with questions about empirical psychology. He aimed to develop an empirical account of human beings, and his lectures and writings on the topic are recognizable today as properly 'psychological' treatments of human thought and behavior. In this book Patrick R. Frierson uses close analysis of relevant texts, including unpublished lectures and notes, to study Kant's account. He shows in detail how Kant explains human action, choice, and thought in empirical terms, and how a (...) better understanding of Kant's psychology can shed light on major concepts in his philosophy, including the moral law, moral responsibility, weakness of will, and cognitive error. Frierson also applies Kant's accounts of mental illness to contemporary philosophical issues. His book will interest students and scholars of Kant, the history of psychology, philosophy of psychology, and philosophy of action. (shrink)

Vagueness is given a philosophically neutral definition in terms of an epistemic notion of tolerance. Such a notion is intended to capture the thesis that vague terms draw no known boundary across their range of signification and contrasts sharply with the semantic notion of tolerance given by Wright (1975, 1976). This allows us to distinguish vagueness from superficially similar but distinct phenomena such as semantic incompleteness. Two proofs are given which show that vagueness qua epistemic tolerance and vagueness qua borderline (...) cases (when properly construed to exclude terms which are stipulated to give rise to borderline cases) are in fact conceptually equivalent dimensions of vagueness, contrary to what might initially be expected. It is also argued that the common confusion of tolerance and epistemic tolerance has skewed the vagueness debate in favour of indeterminist over epistemic conceptions of vagueness. Clearing up that confusion provides an indirect argument in favour of epistemicism. Finally, given the equation of vagueness with epistemic tolerance, it is shown that there must be radical higher-order vagueness, contrary to what many authors have argued. (shrink)

We model scientific theories as Bayesian networks. Nodes carry credences and function as abstract representations of propositions within the structure. Directed links carry conditional probabilities and represent connections between those propositions. Updating is Bayesian across the network as a whole. The impact of evidence at one point within a scientific theory can have a very different impact on the network than does evidence of the same strength at a different point. A Bayesian model allows us to envisage and analyze the (...) differential impact of evidence and credence change at different points within a single network and across different theoretical structures. (shrink)

Up to now theories of semantic information have implicitly relied on logical monism, or the view that there is one true logic. The latter position has been explicitly challenged by logical pluralists. Adopting an unbiased attitude in the philosophy of information, we take a suggestion from Beall and Restall at heart and exploit logical pluralism to recognise another kind of pluralism. The latter is called informational pluralism, a thesis whose implications for a theory of semantic information we explore.

Presentists believe that only present things exist. Their theories, at first glance, seem to offer many admirable features: a simple ontology, and a meaningful, objective status for key temporal phenomena, such as the present moment and the passage of time. So intuitive is this theory that, as John Bigelow puts it, presentism was “believed by everyone...until at least the nineteenth century”. Yet, in the last 200 years presentism has been beset by criticisms from both physicists and metaphysicians. One of the (...) most significant criticisms is that presentists cannot provide an acceptable system of truthmaking. If there is no past, how can there still be truths about the past? In this paper, I introduce a new theory of presentism, which addresses this problem in a novel way: by simply denying that there are any truths about the past. While prima facie an unintuitive position, I will argue that a sensible presentist philosophy of this kind can be described, so long as it is accompanied by an appropriate system of physics. I will also indicate at certain points that adopting presentism could allow us to understand fundamental physics in new, more intuitive ways. By the end of the paper, I hope to not only show that hard presentism is a defensible theory of time, but also that it could offer a number of advantages to the physicist and the philosopher alike. (shrink)

We argue that all human beings have a special type ofdignitywhich is the basis for (1) the obligation all of us have not to kill them, (2) the obligation to take their well‐being into account when we act, and (3) even the obligation to treat them as we would have them treat us, and indeed, that all human beings areequalin fundamental dignity. We give reasons to oppose the position that only some human beings, because of their possession of certain characteristics (...) in addition to their humanity (for example, an immediately exercisable capacity for self‐consciousness, or for rational deliberation), have full moral worth. What distinguishes human beings from other animals, what makes human beingspersonsrather thanthings, is their rational nature, and human beings are rational creatures by virtue of possessing natural capacities for conceptual thought, deliberation, and free choice, that is, the natural capacity to shape their own lives. (shrink)

Let R(X, B) denote the class of probability functions that are defined on algebra X and that represent rationally permissible degrees of certainty for a person whose total relevant background evidence is B. This paper is concerned with characterizing R(X, B) for the case in whichX is an algebra of propositions involving two properties and B is empty. It proposes necessary conditions for a probability function to be in R(X, B), some of which involve the notion of statistical dependence. The (...) class of probability functions that satisfy these conditions, here denoted PI, includes a class that Carnap once proposed for the same situation. Probability functions in PI violate Carnap's axiom of analogy but, it is argued, that axiom should be rejected. A derivation of Carnap's model by Hesse has limitations that are not present in the derivation of PI given here. Various alternative probability models are considered and rejected. (shrink)

A small consortium of philosophers has begun work on the implications of epistemic networks (Zollman 2008 and forthcoming; Grim 2006, 2007; Weisberg and Muldoon forthcoming), building on theoretical work in economics, computer science, and engineering (Bala and Goyal 1998, Kleinberg 2001; Amaral et. al., 2004) and on some experimental work in social psychology (Mason, Jones, and Goldstone, 2008). This paper outlines core philosophical results and extends those results to the specific question of thresholds. Epistemic maximization of certain types does show (...) clear threshold effects. Intriguingly, however, those effects appear to be importantly independent from more familiar threshold effects in networks. (shrink)

The individualist nature of much contemporary just war theory means that we often discuss cases with single attackers. But even if war is best understood in this individualist way, in war combatants often have to make decisions about how to distribute harms among a plurality of aggressors: they must decide whom and how many to harm, and how much to harm them. In this paper, I look at simultaneous multiple aggressor cases in which more than one distribution of harm among (...) aggressors is available. I show how such cases pose deep questions concerning the nature, role, and scope of the necessity principle, and its relationship to both liability and narrow proportionality. I argue that a hitherto unrecognised measure – ‘narrow proportionality shortfall’ – and its distribution is relevant in choosing how to distribute harms across aggressors. I then extend this analysis to show how this may help us with a puzzle concerning sequential attacks. (shrink)

Central to the contemporary dispute over 'naturalizing epistemology' is the question of the continuity of epistemology with science, i.e., how far purely descriptive, psychological matters can or should inform the traditional evaluative epistemological enterprise. Thus all parties tend to agree that the distinction between psychology and epistemology corresponds to a firm fact/value distinction. This is something Reid denies with respect to the first principles of common sense: while insisting on the continuity of epistemology with the rest of science, he does (...) not wish to derive an 'ought' from an 'is', nor to reduce the epistemological to the psychological. His view is that the first principles are constitutive principles, hence that they are simultaneously descriptive and prescriptive, and thus that with regard to them there is in this sense simply no fact/value gap to be bridged. (shrink)

Social media is full of dead people. Untold millions of dead users haunt the online world where we increasingly live our lives. What do we do with all these digital souls? Can we simply delete them, or do they have a right to persist? Philosophers have been almost entirely silent on the topic, despite their perennial focus on death as a unique dimension of human existence. Until now. -/- Drawing on ongoing philosophical debates, Digital Souls claims that the digital dead (...) are objects that should be treated with loving regard and that we have a moral duty towards. Modern technology helps them to persist in various ways, while also making them vulnerable to new forms of exploitation and abuse. This provocative book explores a range of questions about the nature of death, identity, grief, the moral status of digital remains and the threat posed by AI-driven avatars of dead people. In the digital era, it seems we must all re-learn how to live with the dead. (shrink)

This study argues that the notion of transparency requires reconsideration as an essence of ethical agency. It provides a brief explication of the concept of transparency, rooted in the principle of human dignity of Immanuel Kant, and suggests that it has been inadequately appreciated by media ethics scholars and instructors more focused on relatively simplistic applications of his categorical imperative. This study suggests that the concept's Kantian roots raise a radical challenge to conventional understandings of human interaction and, by extension, (...) what it means to exercise freedom. (shrink)

The iterated Prisoner’s Dilemma has become the standard model for the evolution of cooperative behavior within a community of egoistic agents, frequently cited for implications in both sociology and biology. Due primarily to the work of Axelrod (1980a, 198Ob, 1984, 1985), a strategy of tit for tat (TFT) has established a reputation as being particularly robust. Nowak and Sigmund (1992) have shown, however, that in a world of stochastic error or imperfect communication, it is not TFT that finally triumphs in (...) an ecological model based on population percentages (Axelrod and Hamilton 1981), but ‘generous tit for tat’ (GTFT), which repays cooperation with a probability of cooperation approaching 1 but forgives defection with a probability of l/3. In this paper, we consider a spatialized instantiation of the stochastic Prisoner’s Dilemma, using two-dimensional cellular automata (Wolfram, 1984, 1986; Gutowitz, 1990) to model the spatial dynamics of populations of competing strategies. The surprising result is that in the spatial model it is not GIFT but still more generous strategies that are favored. The optimal strategy within this spatial ecology appears to be a form of ‘bending over backwards’, which returns cooperation for defection with a probability of 2/3 - a rate twice as generous as GTFT. (shrink)

The central claim of this book is that the dichotomy between economic dependence and economic independence is completely inadequate for describing the political challenges faced by contemporary capitalist welfare states. The simplistic contrast between markets and states as sources of income renders invisible the relations of dependence established in our basic economic institutions such as the family, property, and money. This book is a work of political theory that attacks narrow conceptions of dependence and identifies distinct senses of dependence that (...) might allow political communities to make clearer decisions about the justice of our economic institutions and practices. Inheritance, for example, is as much a form of dependence as support by a welfare state, but these are never compared in debates about economic justice. This book begins the work of comparing forms of economic dependence, and argues that economic dependence is always an issue of both vulnerability and parasitism. It builds bridges between political theory and social science, and is of relevance to those concerned with social and economic justice in and beyond contemporary capitalist welfare states. (shrink)

This paper argues that it is permissible for computer scientists and engineers—working with advanced militaries that are making good faith efforts to follow the laws of war—to engage in the research and development of lethal autonomous weapons systems. Research and development into a new weapons system is permissible if and only if the new weapons system can plausibly generate a superior risk profile for all morally relevant classes and it is not intrinsically wrong. The paper then suggests that these conditions (...) are satisfied by at least some potential LAWS development programs. More specifically, since LAWS will lead to greater force protection, warfighters are free to become more risk-acceptant in protecting civilian lives and property. Further, various malicious motivations that lead to war crimes will not apply to LAWS or will apply to no greater extent than with human warfighters. Finally, intrinsic objections—such as the claims that LAWS violate human dignity or that it creates ‘responsibility gaps’—are rejected on the basis that they rely upon implausibly idealized and atomized understandings of human decision-making in combat. (shrink)

Tschacher and Haken have recently applied a systems-based approach to modeling psychotherapy process in terms of potentially beneficial tendencies toward deterministic as well as chaotic forms of change in the client’s behavioral, cognitive and affective experience during the course of therapy. A chaotic change process refers to a greater exploration of the states that a client can be in, and it may have a potential positive role to play in their development. A distinction is made between on the one hand, (...) specific instances of instability which are due to techniques employed by the therapist, and on the other, a more general instability which is due to the therapeutic relationship, and a key, necessary result of a successful therapeutic alliance. Drawing on Friston’s systems-based model of free energy minimization and predictive coding, it is proposed here that the increase in the instability of a client’s functioning due to therapy can be conceptualized as a reduction in the precisions with which the client’s prior beliefs about themselves and their world, are held. It is shown how a good therapeutic alliance results in the emergence of a new hierarchical level in the client’s generative model of themselves and their relationship with the world. The emergence of this new level of functioning permits the reduction of the precisions of the client’s priors, which allows the client to ‘open up’: to experience thoughts, emotions and experiences they did not have before. It is proposed that this process is a necessary precursor to change due to psychotherapy. A good consilience can be found between this approach to understanding the role of the therapeutic alliance, and the role of epistemic trust in psychotherapy as described by Fonagy and Allison. It is suggested that beneficial forms of instability in clients are an underappreciated influence on psychotherapy process, and thoughts about the implications, as well as situations in which instability may not be beneficial for therapy, are considered. (shrink)

This paper considers Norton’s Material Theory of Induction. The material theory aims inter alia to neutralize Hume’s Problem of Induction. The purpose of the paper is to evaluate the material theory's capacity to achieve this end. After pulling apart two versions of the theory, I argue that neither version satisfactorily neutralizes the problem.

In a series of formal studies and less formal applications, Hong and Page offer a ‘diversity trumps ability’ result on the basis of a computational experiment accompanied by a mathematical theorem as explanatory background (Hong & Page 2004, 2009; Page 2007, 2011). “[W]e find that a random collection of agents drawn from a large set of limited-ability agents typically outperforms a collection of the very best agents from that same set” (2004, p. 16386). The result has been extremely influential as (...) an epistemic justification for diversity policy initiatives. Here we show that the ‘diversity trumps ability’ result is tied to the particular random landscape used in Hong and Page’s simulation. We argue against interpreting results on that random landscape in terms of ‘ability’ or ‘expertise.’ These concepts are better modeled on smother and more realistic landscapes, but keeping other parameters the same those are landscapes on which it is groups of the best performing that do better. Smoother landscapes seem to vindicate both the concept and the value of expertise. Change in other parameters, however, also vindicates diversity. With an increase in the pool of available heuristics, diverse groups again do better. Group dynamics makes a difference as well; simultaneous ‘tournament’ deliberation in a group in place of the ‘relay’ deliberation in Hong and Page’s original model further emphasizes an advantage for diversity. ‘Tournament’ 2 dynamics particularly shows the advantage of mixed groups that include both experts and non-experts. As a whole, our modeling results suggest that relative to problem characteristics and conceptual resources, the wisdom of crowds and the wisdom of the few each have a place. We regard ours as a step toward attempting to calibrate their relative virtues in different modelled contexts of intellectual exploration. (shrink)

The status of risk factors and disease remains a disputed question in the theory and practice of medicine and healthcare, and so does the related question of delineating disease boundaries. I present a framework based on Bernard Lonergan’s account of emergent probability for differentiating (1) generically distinct levels of systematic function within organisms and between organisms and their environments and (2) the methods of functional, genetic, and statistical investigation. I then argue on this basis that it is possible to understand (...) disease in terms of biological or higher intra-level dysfunction, risk factors—including genetic risk factors—in terms of statistical inter-level conditioning of a given stage or developmental sequence of systematic functioning, and the empirical boundaries of disease in terms of the limits of both functional categorization (from an epistemic standpoint) and upper-level integration of lower-level processes and events (from an ontological standpoint). (shrink)

The Law of Non-Contradiction holds that both sides of a contradiction cannot be true. Dialetheism is the view that there are contradictions both sides of which are true. Crucial to the dispute, then, is the central notion of contradiction. My first step here is to work toward clarification of that simple and central notion: Just what is a contradiction?

Should all digital communication be accessible to government inspection? Is robust cryptography in the hands of the public a threat to our national security? With Dorothy Denning and Patrick Sullivan.

ABSTRACT This article demonstrates why Husserl struggled to understand the conditions of possibility of false memory, and how only the genetic dimension of his phenomenology enabled him to conceive of a specifically mnemic form of falsehood. For a false memory to deceive us, we must trust that it is true, but in order to have a phenomenology of its falsehood, the memory must appear as false. Husserl’s theory of false memory responds to both of these demands by showing how distorting (...) syntheses conceal themselves, without making it impossible to discover their distorting effects. Key to meeting these two demands is Husserl’s account of how the unconscious functions as the “untrue” basis of memory, and how all recollections require affective, associative syntheses between present conscious experience and past unconscious experience, syntheses that are subject to many vicissitudes. (shrink)

As J. Baird Callicott has argued, Adam Smith's moral theory is a philosophical ancestor of recent work in environmental ethics. However, Smith's "all important emotion of sympathy" (Callicott, 2001, p. 209) seems incapable of extension to entities that lack emotions with which one can sympathize. Drawing on the distinctive account of sympathy developed in Smith's Theory of Moral Sentiments, as well as his account of anthropomorphizing nature in "History of Astronomy and Physics," I show that sympathy with non-sentient nature is (...) possible within a Smithian ethics. This provides the possibility of extending sympathy, and thereby benevolence and justice, to nature. (shrink)

We work with a large spatialized array of individuals in an environment of drifting food sources and predators. The behavior of each individual is generated by its simple neural net; individuals are capable of making one of two sounds and are capable of responding to sounds from their immediate neighbors by opening their mouths or hiding. An individual whose mouth is open in the presence of food is “fed” and gains points; an individual who fails to hide when a predator (...) is present is “hurt” by losing points. Opening mouths, hiding, and making sounds each exact an energy cost. There is no direct evolutionary gain for acts of cooperation or “successful communication” per se. In such an environment we start with a spatialized array of neural nets with randomized weights. Using standard learning algorithms, our individuals “train up” on the behavior of successful neighbors at regular intervals. Given that simple setup, will a community of neural nets evolve a simple language for signaling the presence of food and predators? With important qualifications, the answer is “yes.” In a simple spatial environment, pursuing individualistic gains and using partial training on successful neighbors, randomized neural nets can learn to communicate. (shrink)

This paper aims to clarify Schopenhauer’s a priori argument for pessimism and, to an extent, rescue it from standard objections in secondary literature. I argue that if we separate out the various strands of Schopenhauer’s pessimism, we hit upon problems and counterexamples stemming from psychology. For example, instances where striving does not appear to equate to suffering, which puts pressure on the Schopenhauerian claim that human life, qua instantiation of the will, is painful. Schopenhauer’s sensitivity to the complexities of human (...) psychology means that he may be able to stave off such concerns. However, this reveals that true force of Schopenhauer’s argument lies in the manner in which he combines an a priori formulation with empirical observation. I conclude that, though not unproblematic, Schopenhauer’s argument in its most refined forms offers a deep articulation of the human condition, and warrants serious consideration. (shrink)

We are increasingly exposed to polarized media sources, with clear evidence that individuals choose those sources closest to their existing views. We also have a tradition of open face-to-face group discussion in town meetings, for example. There are a range of current proposals to revive the role of group meetings in democratic decision-making. Here, we build a simulation that instantiates aspects of reinforcement theory in a model of competing social influences. What can we expect in the interaction of polarized media (...) with group interaction along the lines of town meetings? Some surprises are evident from a computational model that includes both. Deliberative group discussion can be expected to produce opinion convergence. That convergence may not, however, be a cure for extreme views polarized at opposite ends of the opinion spectrum. In a large class of cases, we show that adding the influence of group meetings in an environment of self-selected media produces not a moderate central consensus but opinion convergence at one of the extremes defined by polarized media. (shrink)

This article aims to elucidate and explore the significance of a distinction in Schopenhauer's pessimism which has not yet received detailed attention in the secondary literature. Schopenhauer is well known to have argued for the thesis that the fundamental feature of sentient life is pervasive suffering, and on these grounds held that individual lives are not worth living. However, he similarly claims with frequency that the nonexistence of the world “as a whole” is preferable to its existence. This is a (...) distinct thesis, and it is unclear how Schopenhauer thinks it relates to the first. This investigation seeks to rectify this, arguing that the ambiguous concept of the world “as a whole” has at least two interpretations in Schopenhauer's texts. Moreover, that this “world-pessimism”—once properly understood—may avoid certain objections that pessimism at the level of the individual is vulnerable to. (shrink)

This is a survey of the concept of continuity. Efforts to explicate continuity have produced a plurality of philosophical conceptions of continuity that have provably distinct expressions within contemporary mathematics. I claim that there is a divide between the conceptions that treat the whole continuum as prior to its parts, and those conceptions that treat the parts of the continuum as prior to the whole. Along this divide, a tension emerges between those conceptions that favor philosophical idealizations of continuity and (...) those that are more readily available for mathematico-scientific use. (shrink)

The well-known classification of legal procedure into “four feet” presents certain conceptual problems for the Indian legal tradition that various Smṛtikāras and commentators have attempted to resolve in different and sometimes contradictory ways. These difficulties arise because the four feet originally referred in Indian legal theory to four distinct, hierarchical legal domains rather than procedural means for reaching a verdict. The earliest attested discussion of the four feet, found in Kauṭilya’s Arthaśāstra, indicates that early legal theorists understood the greater legal (...) order as being comprised of four hierarchical domains and that these domains were ordered by the state as expressed in the original formulation of the four feet. Among the four legal domains, that of vyavahāra was developed by the state itself as a realm of public, transactional law meant to address disputes that could not be resolved in other legal forums. From this we can conclude that the origin of Indian jurisprudence lies with state efforts to formalize and enforce the laws of public transactions. The reinterpretation of the four feet by later jurists was motivated perhaps by resistance to one of the fundamental relationships expressed in the four feet, namely that royal authority possessed the greatest legal authority, independent of Brāhmaṇical law. (shrink)

Bayesian confirmation theory offers an explicatum for a pretheoretic concept of confirmation. The “problem of irrelevant conjunction” for this theory is that, according to some people's intuitions, the pretheoretic concept differs from the explicatum with regard to conjunctions involving irrelevant propositions. Previous Bayesian solutions to this problem consist in showing that irrelevant conjuncts reduce the degree of confirmation; they have the drawbacks that (i) they don't hold for all ways of measuring degree of confirmation and (ii) they don't remove the (...) conflict with intuition but merely “soften the impact” (as Fitelson has written). A better solution, which avoids both these drawbacks, is to show that the intuition is wrong. (shrink)

Variations on the ontological argument for most minimal and most mediocre beings.

In a recent contribution to Learning for Democracy, Richard Bailey argues that Thomas Kuhn advocated an indoctrinatory model of science education, which is fundamentally authority-based. While agreeing with Bailey’s conclusion, this article suggests that Kuhn was attempting to solve an important problem which Bailey only touches on – how to ensure that science students do not become hypercritical. It continues by offering a critical rationalist solution to this problem, arguing that paradigms qua exemplars should be historical problem-solving episodes, rather than (...) model solutions to puzzles. (shrink)

In this paper, we investigate how certain types of predicates should be connected with certain types of degree scales, and how this can affect the events they describe. The distribution and interpretation of various degree adverbials will serve us as a guideline in this perspective. They suggest that two main types of degree scales should be distinguished: (i) quantity scales, which are characterized by the semantic equivalence of Yannig ate the cake partially and Yannig ate part of the cake; quantity (...) scales only appear with verbs possessing an incremental theme (cf. Dowty 1991); (ii) intensity scales, which are characterized by degree modifiers (e.g., extremely, perfectly) receiving an intensive interpretation; intensity scales typically occur with verbs morphologically related to an adjective (to dry). More generally, we capitalize on a typology of degree structures to explain how degrees play a central role with respect to event structure. (shrink)

The Southern Journal of Philosophy, Volume 60, Issue 1, Page 118-149, March 2022.

How do conventions of communication emerge? How do sounds or gestures take on a semantic meaning, and how do pragmatic conventions emerge regarding the passing of adequate, reliable, and relevant information? My colleagues and I have attempted in earlier work to extend spatialized game theory to questions of semantics. Agent-based simulations indicate that simple signaling systems emerge fairly naturally on the basis of individual information maximization in environments of wandering food sources and predators. Simple signaling emerges by means of any (...) of various forms of updating on the behavior of immediate neighbors: imitation, localized genetic algorithms, and partial training in neural nets. Here the goal is to apply similar techniques to questions of pragmatics. The motivating idea is the same: the idea that important aspects of pragmatics, like important aspects of semantics, may fall out as a natural results of information maximization in informational networks. The attempt below is to simulate fundamental elements of the Gricean picture: in particular, to show within networks of very simple agents the emergence of behavior in accord with the Gricean maxims. What these simulations suggest is that important features of pragmatics, like important aspects of semantics, don't have to be added in a theory of informational networks. They come for free. (shrink)

This is an exploratory paper about combining logics, combining theories and combining structures. Typically when one applies logic to such areas as computer science, artificial intelligence or linguistics, one encounters hybrid ontologies. The aim of this paper is to identify plausible strategies for coping with ontological richness.

What is it for a sound or gesture to have a meaning, and how does it come to have one? In this paper, a range of simulations are used to extend the tradition of theories of meaning as use. The authors work throughout with large spatialized arrays of sessile individuals in an environment of wandering food sources and predators. Individuals gain points by feeding and lose points when they are hit by a predator and are not hiding. They can also (...) make sounds heard by immediate neighbours in the array, and can respond to sounds from immediate neighbours. No inherent meaning for these sounds is built into the simulation; under what circumstances they are sent, if any, and what the response to them is, if any, vary initially with the strategies randomized across the array. These sounds do take on a specific function for communities of individuals, however, with any of three forms of strategy change: direct imitation of strategies of successful neighbours, a localized genetic algorithm in which strategies are ‘crossed’ with those of successful neighbours, and neural net training on the behaviour of successful neighbours. Starting from an array randomized across a large number of strategies, and using any of these modes of strategy change, communities of ‘communicators’ emerge. Within these evolving communities the sounds heard from immediate neighbours, initially arbitrary across the array, come to be used for very specific communicative functions. ‘Communicators’ make a particular sound on feeding and respond to that same sound from neighbours by opening their mouths; they make a different sound when hit with a predator and respond to that sound by hiding. Robustly and persistently, even in simple computer models of communities of self-interested agents, something suggestively like signalling emerges and spreads. Keywords: meaning, communication, genetic algorithms, neural networks. (shrink)

This paper considers Hilary Kornblith’s suggestion that epistemic norms have a practical basis—that their normative force stems from the fact that observing them helps us to achieve our various goals. This view, I’ll argue, provides a plausible account of why epistemic norms and appraisals have a claim on us. But it does not explain, and is not meant to explain, why true belief has the status of fundamental epistemic good. An answer to that question may come from familiar semantico-conceptual analysis, (...) for example, or from the idea that belief as such is governed by a ‘norm of truth’. However, just as Kornblith’s account presumes, and requires, the essentially veritistic character of epistemic assessment, the latter ideas may require supplementation by Kornblith-style reflections on the practical value of true belief if they’re to explain why the relevant norms and appraisals have directive force. In this way, and contrary to how matters are often presented, a Kornblith-style appeal to practical considerations, and the idea that belief as such is governed by a norm of truth, may be interestingly complementary. (shrink)

This paper considers the views of two figures whose work falls on either side of the heyday of American pragmatism, Thomas Reid (1710-96) and Ludwig Wittgenstein (1889-1951). The broad similarities between Reid’s and (the later) Wittgenstein’s views, and in particular their epistemological views, has been well documented. Here, I argue that such similarities extend to the relation in their work between common sense and the presence of elements in their thought that can be considered pragmatist in some important respect. Beginning (...) with Reid, I argue that some specific theses commonly associated with pragmatism – e.g., that meaning, truth, or the justifiedness of a belief in a matter of practical effects or efficacy – clearly run counter to his stated views, and stand in tension with the well-known common sense character of his work. At the same time, however, and as others have noted, other pragmatist themes and ideas – e.g., about the close relations between belief (and doubt) and action, theory and practice, and facts and values – do have a clear precedent in Reid (§2). Most fundamentally, however, Reid’s epistemological views in particular display an adherence to the idea that practice is somehow primary – an idea that’s central to pragmatism ‘broadly conceived’, as Brandom calls it and, according to some others (e.g., Putnam, Cavell), to pragmatism per se. What’s more, once we are clear on the respect(s) in which Reid’s views do incorporate an important pragmatist element, it becomes clear that far from being at odds with, or needing supplementation by, the latter, common sense is in fact inseparable from it (§3). Finally, I turn (§4) to Wittgenstein, and suggest that the same close connection between pragmatist elements and common sense as we find in Reid is present here as well: like Reid, Wittgenstein rejects several ‘narrow’ pragmatist theses; but he too ascribes practice a crucial role. And while he seldom explicitly refers to common sense, the notions of good judgment, and of the reasonable person – hallmarks of common sense, as Reid conceives of it – are at the heart of Wittgenstein’s later epistemological views as well. (shrink)