Multiple theories of problem-solving hypothesize that there are distinct qualitative phases exhibited during effective problem-solving. However, limited research has attempted to identify when transitions between phases occur. We integrate theory on collaborative problem-solving with dynamical systems theory suggesting that when a system is undergoing a phase transition it should exhibit a peak in entropy and that entropy levels should also relate to team performance. Communications from 40 teams that collaborated on a complex problem were coded for occurrence of problem-solving processes. (...) We applied a sliding window entropy technique to each team's communications and specified criteria for identifying data points that qualify as peaks and determining which peaks were robust. We used multilevel modeling, and provide a qualitative example, to evaluate whether phases exhibit distinct distributions of communication processes. We also tested whether there was a relationship between entropy values at transition points and CPS performance. We found that a proportion of entropy peaks was robust and that the relative occurrence of communication codes varied significantly across phases. Peaks in entropy thus corresponded to qualitative shifts in teams’ CPS communications, providing empirical evidence that teams exhibit phase transitions during CPS. Also, lower average levels of entropy at the phase transition points predicted better CPS performance. We specify future directions to improve understanding of phase transitions during CPS, and collaborative cognition, more broadly. (shrink)

Charles Travis presents a series of essays on philosophy of perception, inspired by the insights of Gottlob Frege. He engages with a range of contemporary thinkers, and explores key issues including how perception can make the world bear on what we do or think, and what sorts of capacities we draw on in representing something as (being) something.

Charles Travis presents a series of essays in which he has developed his distinctive view of the relation of thought to language. The key idea is "occasion-sensitivity": what it is for words to express a given concept is for them to be apt for contributing to any of many different conditions of correctness (notably truth conditions). Since words mean what they do by expressing a given concept, it follows that meaning does not determine truth conditions. This view ties thoughts (...) less tightly to the linguistic forms which express them than traditional views of the matter, and in two directions: a given linguistic form, meaning fixed, may express an indefinite variety of thoughts; one thought can be expressed in an indefinite number of syntactically and semantically distinct ways. Travis highlights the importance of this view for linguistic theory, and shows how it gives new form to a variety of traditional philosophical problems. (shrink)

Complex work in teams requires coordination across team members and their technology as well as the ability to change and adapt over time to achieve effective performance. To support such complex interactions, recent efforts have worked toward the design of adaptive human-autonomy teaming systems that can provide feedback in or near real time to achieve the desired individual or team results. However, while significant advancements have been made to better model and understand the dynamics of team interaction and its relationship (...) with task performance, appropriate measures of team coordination and computational methods to detect changes in coordination have not yet been widely investigated. Having the capacity to measure coordination in real time is quite promising as it provides the opportunity to provide adaptive feedback that may influence and regulate teams’ coordination patterns and, ultimately, drive effective team performance. A critical requirement to reach this potential is having the theoretical and empirical foundation from which to do so. Therefore, the first goal of the paper is to review approaches to coordination dynamics, identify current research gaps, and draw insights from other areas, such as social interaction, relationship science, and psychotherapy. The second goal is to collate extant work on feedback and advance ideas for adaptive feedback systems that have potential to influence coordination in a way that can enhance the effectiveness of team interactions. In addressing these two goals, this work lays the foundation as well as plans for the future of human-autonomy teams that augment team interactions using coordination-based measures. (shrink)

Many of us believe that we can and do have individual obligations to refrain from contributing to massive collective harms – say, from producing luxury greenhouse gas (GHG) emissions; however, our individual actions are so small as to be practically meaningless. Can we then, justify the intuition that we ought to refrain? In this paper, we argue that this debate may have been mis-framed. Rather than investigating whether or not we have obligations to refrain from contributing to collective action, perhaps (...) we should ask whether we have reason to do so. However, this framing brings challenges of its own, and so we close by asking what problems are generated if we focus on these questions of ‘contributory ethics’. (shrink)

It is an underappreciated fact within the philosophical literature on laws of nature that many scientific laws require the aid of a supporting cast of additional modelling ingredients (such as boundary conditions, material parameters, interfacial stipulations, rigidity constraints, and so on) in order to perform their traditional role in scientific inquiry. In this paper, I suggest that this underappreciated fact spells trouble for some recent reformulations of David Lewis's Best Systems Account (BSA) of laws of nature. Under the auspices of (...) 'pragmatic Humeanism,' several philosophers have recently argued that the criteria of strength and simplicity that lay at the heart of Lewis's original formulation should be replaced with alternatives that are more sensitive to the role that laws play in scientific practice. Although the criteria that these philosophers put forward differ in a variety of ways, they are primarily concerned with the ability of laws to furnish us with predictions and encode information. This, I suggest, is a problem. If it is true that many scientific laws do not on their own perform some of the roles with which they are traditionally associated, then they are unlikely in isolation to make meaningful contributions to the predictive strength of a system or encode information about particular systems. Such laws are thus unlikely to end up in the best system, and so these accounts will have trouble conferring lawhood upon them. (shrink)

Schellenberg’s hiddenness argument against the existence of God has generated a great deal of discussion. One prominent line of reply has been the idea that God refrains from making His existence more apparent in order to safeguard our moral freedom. Schellenberg has provided extensive counter-replies to this idea. My goal here is to pursue an alternate line of response, though one that still makes some reference to the importance of free-will. It will be argued that God may remain temporarily ‘hidden’ (...) to some people not merely in order to allow their free moral choice, but because His proper allowance of such choice has led to a great deal of suffering on the part of the victims of wicked choices. If His existence were constantly obvious to those victims, even in the midst of their victimization, many of them would be led to an attitude of enmity, even hatred, toward God. (shrink)

This book provides a novel interpretation of the ideas about language in Ludwig Wittgenstein's Philosophical Investigations. Travis places the "private language argument" in the context of wider themes in the Investigations, and thereby develops a picture of what it is for words to bear the meaning they do. He elaborates two versions of a private language argument, and shows the consequences of these for current trends in the philosophical theory of meaning.

Neonatal intensive care units represent simultaneously one of the great success stories of modern medicine, and one of its most controversial developments. One particularly controversial issue is the resuscitation of extremely preterm infants. Physicians in the United States generally accept that they are required to resuscitate infants born as early as 25 weeks and that it is permissible to resuscitate as early as 22 weeks. In this article, I question the moral pressure to resuscitate by criticizing the idea that resuscitation (...) in this context “saves” a human life. Our radical medical advancements have allowed us to intervene in the life of a human before it makes sense to say that such an intervention “saves” someone; rather, what the physician does in resuscitating and treating an extremely preterm infant is to take over creating it. This matters, I argue, because “rescues” are much more morally urgent than “creations.”. (shrink)

Neste trabalho são apresentados dados e reflexões sobre a proposta pedagógica de Ensino Médio Politécnico, implantada desde 2012 nas escolas públicas estaduais do Rio Grande do Sul, Brasil. Tendo como pano de fundo as concepções do Educar pela Pesquisa e da Interdisciplinaridade - eixos norteadores da parte diversificada denominada Seminário Integrado -, a investigação teve cunho qualitativo, apresentando inferências sobre as compreensões acerca do conceito de pesquisa alcançadas pelos estudantes. As intervenções pedagógicas da investigação foram desenvolvidas em quatro turmas de (...) uma escola em Porto Alegre, capital do Rio Grande do Sul, encaminhadas no início do ano letivo de 2015. Por meio da análise qualitativa das falas dos alunos, da identificação da ampliação da complexidade dos seus respectivos mapas conceituais, confeccionados no software CmapTools, assim como da avaliação quanto à profundidade dos projetos encaminhados, pôde-se evidenciar ampla evolução nas compreensões dos alunos quanto ao conceito de pesquisa, percebendo-se assim que a metodologia aplicada nessa investigação foi profícua. (shrink)

Entre as modernas teorias em Metaética a Teoria do Erro de John Mackie é uma das mais influentes. Isso não é acidental. A teoria de Mackie é nova, é interessante e está apoiada em argumentos claros e desafiadores. A despeito de tudo isso, aqui uma crítica às principais teses de Mackie será apresentada. Em primeiro lugar se sustentará que se o seu principal argumento, o argumento do caráter estranho, é tomado como aceitável, o que se segue não é a falsidade (...) sistemática dos enunciados morais, como Mackie alega, mas algo diferente. Em segundo lugar, argumentar-se-á que o próprio argumento do caráter estranho não é aceitável. O resultado é uma rejeição dos pontos principais da teoria de Mackie. (shrink)

There is a view abroad on which perceptual experience has representational content in this sense: in it something is represented to the perceiver as so. On the view, a perceptual experience has a face value at which it may be taken, or which may be rejected. This paper argues that that view is mistaken: there is nothing in perceptual experience which makes it so that in it anything is represented as so. In that sense, the senses are silent, or, in (...) Austin's term, dumb. Perceptual experience is not as such either veridical or delusive. It may mislead, but it does not take representation to accomplish that. (shrink)

The ethics and moral psychology of the Phaedo crucially depend on claims made uniquely about bodily desire. This paper offers an analysis and defense of the account of bodily desire in the dialogue, arguing that bodily desires – desires with their source in processes or conditions of the body – are characterized by three features: motivational pull, assertoric force, and intensity. Desires with these features target the soul’s rational functions with distinctive forms of imprisonment. They target the soul’s capacity to (...) rule with servility; and they target the soul’s capacity for knowledge with confinement in the visible world. (shrink)

Recent work on Mary Shepherd has largely focused on her metaphysics, especially as a response to Berkeley and Hume. However, relatively little attention has thus far been paid to the epistemological aspects of Shepherd’s program. What little attention Shepherd’s epistemology has received has tended to cast her as providing an unsatisfactory response to the skeptical challenge issued by Hume. For example, Walter Ott and Jeremy Fantl have each suggested that Shepherd cannot avoid Hume’s inductive skepticism even if she is granted (...) her metaphysics. In this paper, I examine Shepherd’s epistemology and argue that her response to Hume is more successful than the current literature suggests. In particular, I argue that, if Shepherd is granted her metaphysics, she can answer Hume’s demand for a rational justification of ordinary inductive inferences via a deductively justified uniformity principle and an appeal to parsimony. (shrink)

Charles Travis; IX*—On Constraints of Generality, Proceedings of the Aristotelian Society, Volume 94, Issue 1, 1 June 1994, Pages 165–188, https://doi.org/10.10.

Among those who discuss America's opioid crisis, it is popular to claim that we know what we, as a society, ought to do to solve the problem—we simply don't want it badly enough. We don't lack knowledge; we lack the will to act and to fund the right policies. In fact, I've heard two versions of this. Among those who focus on prescription opioids, it is clear that we ought to stop prescribing so many powerful opioid painkillers. And among my (...) public health colleagues focusing on illicit drug use, it is clear that we ought to expand addiction treatment and harm‐reduction services. The problem, however, is that the second claim is not obvious (and, indeed, is denied by many Americans), and the first claim probably isn't even true (at least, not in so crude a form). In short, the opioid crisis presents not only a problem of political will but also one of ethics. It will take work to discover or justify our normative claims in this arena. (shrink)

In “Save the Children!” Artúrs Logins responds to my argument that, in certain cases, it is morally permissible to not prevent something bad from happening, even when one can do so without sacrificing something of comparable moral importance. Logins’ responses are thought-provoking, though I will argue that his critiques miss their mark. I rebut each of the responses offered by Logins. However, much of my focus will be on one of his criticisms which rests on an unfortunately common misunderstanding of (...) Singer’s argument in “Famine, Affluence, and Morality.” My response, then, is important not only because it salvages my positive argument, but also because it identifies, and corrects, this misunderstanding. (shrink)

Let us begin with a piece of intellectual history. The story begins in a period encapsulating the second world war – say the ‘40’s, give and take a bit. Around then, it began to be argued with force that an expression – e.g., an English one – while it well might mean something, does not say anything, and notably no one thing in particular. The principal behind the argument was surely J.L. Austin, though, I would claim, the same point was (...) argued in a somewhat different way by Wittgenstein. The intended point was not merely a grammatical one: we say of an expression that it means such and such, but not that it says such and such. Be that as it may, the main point was quite substantive: typically, an English expression is such that, with its meaning fixed, there are a variety of distinct things to be said in using it on some production of it or other. (shrink)

Do facts about what an agent would freely do in certain circumstances at least partly determine any of her moral obligations? Actualists answer ‘yes’, while possibilists answer ‘no’. We defend two novel hybrid accounts that are alternatives to actualism and possibilism: Dual Obligations Hybridism and Single Obligation Hybridism. By positing two moral ‘oughts’, each account retains the benefits of actualism and possibilism, yet is immune from the prima facie problems that face actualism and possibilism. We conclude by highlighting one substantive (...) difference between our two hybrid accounts. (shrink)

This paper attempts to show that contextualism cannot adequately handle all versions of ‘The Lottery Paradox.” Although the application of contextualist rules is meant to vindicate the intuitive distinction between cases of knowledge and non-knowledge, it fails to do so when applied to certain versions of “The Lottery Paradox.” In making my argument, I first briefly explain why this issue should be of central importance for contextualism. I then review Lewis’ contextualism before offering my argument that the lottery paradox persists (...) on all contextualist accounts. Although I argue that the contextualist does not fare well, hope nevertheless remains. For, on Lewis’ behalf, I offer what I take to be the best solution for the contextualist and argue that once this solution is adopted, contextualism will be in a better position to handle the lottery paradox than any other substantive epistemological theory. (shrink)

This article inspects Peirce’s resonances on Deleuze’s semiotic. Whereas most of the literature agrees that Deleuze adapts Peirce’s semiotic to serve his Bergsonian-based theory of sign, this article claims that the relationship of Deleuze with Peirce’s writings is more foliated than it may appear at first. The development of this hypothesis invites to trace back Deleuze’s works before his very acquaintance with Peirce in the 1980s. Therefore, one of Peirce’s classical issues – the role that relations and habits play for (...) the triadic conception of sign – is considered with Deleuze’s early studies, in which he developed this same issue as to approach Hume and Proust. This background echoes years later in Deleuze’s incursion to Peirce’s semiotic in the 1980s ninety-two classes and two books on cinema. In fact, Deleuze’s own triadic conception of sign and his acknowledged pragmatist inclination prove to be closer to Peirce’s pragmatism than the scholarly literature tends to think or argue. The aim of this article is not, however, to build an overwhelming philosophical identity between Deleuze and Peirce, it sets up instead a steadier basis from where to understand their differences. Deleuze’s ignored five-year long lectures on cinema shows to be exegetically revealing with respect to his debts towards Peirce. (shrink)

We examine the prevalent use of the phrase “local realism” in the context of Bell’s Theorem and associated experiments, with a focus on the question: what exactly is the ‘realism’ in ‘local realism’ supposed to mean? Carefully surveying several possible meanings, we argue that all of them are flawed in one way or another as attempts to point out a second premise (in addition to locality) on which the Bell inequalities rest, and (hence) which might be rejected in the face (...) of empirical data violating the inequalities. We thus suggest that the phrase ‘local realism’ should be banned from future discussions of these issues, and urge physicists to revisit the foundational questions behind Bell’s Theorem. (shrink)

The debate over the explanatory nature of cognitive models has been waged mostly between two factions: the mechanists and the dynamical systems theorists. The former hold that cognitive models are explanatory only if they satisfy a set of mapping criteria, particularly the 3M/3m* requirement. The latter have argued, pace the mechanists, that some cognitive models are both dynamical and constitute covering-law explanations. In this paper, I provide a minimal model interpretation of dynamical cognitive models, arguing that this both provides needed (...) clarity to the mechanist versus dynamicist divide in cognitive science and also paves the way towards further insights about scientific explanation generally. (shrink)

I consider how complex logical operations might self-assemble in a signalling-game context via composition of simpler underlying dispositions. On the one hand, agents may take advantage of pre-evolved dispositions; on the other hand, they may co-evolve dispositions as they simultaneously learn to combine them to display more complex behaviour. In either case, the evolution of complex logical operations can be more efficient than evolving such capacities from scratch. Showing how complex phenomena like these might evolve provides an additional path to (...) the possibility of evolving more or less rich notions of compositionality. This helps provide another facet of the evolutionary story of how sufficiently rich, human-level cognitive or linguistic capacities may arise from simpler precursors. 1Signalling and Self-assembly2Simple Unary Logic Games3Composing Unary Functions for Binary Inputs 3.1Utilizing pre-evolved dispositions3.2Co-evolving logical dispositions3.3Learning appropriate outputs3.4Taking account of the full state-space of unary games3.5Role-free composition4Discussion 4.1Efficacy and efficiency of learning complex dispositions4.2Other binary operations4.3To infinity and beyond5Conclusion. (shrink)

Abstract On Schellenberg’s formulation of the problem of divine hiddenness, a loving God would ensure that anyone capable of having a relationship with Him, and not resisting it, would be granted sufficient evidence to make belief in God rationally indubitable. And He would do this by granting a powerful religious experience to every person at the moment he or she reaches the age of reason. Here I lay out a new reason why God might delay revelation of himself, justifiably allowing (...) for some nonresistant nonbelief. Content Type Journal Article Category Article Pages 1-11 DOI 10.1007/s11153-012-9338-5 Authors Travis Dumsday, Department of Religious Studies, Livingstone College, 701 West Monroe St., Salisbury, NC 28144, USA Journal International Journal for Philosophy of Religion Online ISSN 1572-8684 Print ISSN 0020-7047. (shrink)

What accounts for the linkage of seemingly diverse and inherently separable fundamental properties, such that they are regarded as properties of a single thing? Multiple answers to this question have been put forward in both the historical and current literature, especially from competing substance ontologies and competing theories concerning the metaphysics of natural kinds. Here I lay out and critically assess two ways in which dispositionalism might contribute to the discussion.

I introduce an extension of the Lewis-Skyrms signaling game, analysed from a dynamical perspective via simple reinforcement learning. In Lewis’ (Convention, Blackwell, Oxford, 1969) conception of a signaling game, salience is offered as an explanation for how individuals may come to agree upon a linguistic convention. Skyrms (Signals: evolution, learning & information, Oxford University Press, Oxford, 2010a) offers a dynamic explanation of how signaling conventions might arise presupposing no salience whatsoever. The extension of the atomic signaling game examined here—which I (...) will refer to as a salience game—introduces a variable parameter into the atomic signaling game which allows for degrees of salience, thus filling in the continuum between Skyrms’ and Lewis’ models. The model does not presuppose any salience at the outset, but illustrates a process by which accidentally evolved salience is amplified, to the benefit of the players. It is shown that increasing degrees of salience allow populations to avoid sub-optimal pooling equilibria and to coordinate upon conventions more quickly. (shrink)

Thought's Footing is an enquiry into the relationship between the ways things are and the way we think and talk about them. It is also a study of Wittgenstein's Philosophical Investigations: Charles Travis develops his account of certain key themes into a unified view of the work as a whole. The central question is: how does thought get its footing? How can the thought that things are a certain way be connected to things being that way?

Charles Travis; V*—Are Belief Ascriptions Opaque?, Proceedings of the Aristotelian Society, Volume 85, Issue 1, 1 June 1985, Pages 73–100, https://doi.org/10.10.

The ontology of Bohmian mechanics includes both the universal wave function and particles. Proposals for understanding the physical significance of the wave function in this theory have included the idea of regarding it as a physically-real field in its 3N-dimensional space, as well as the idea of regarding it as a law of nature. Here we introduce and explore a third possibility in which the configuration space wave function is simply eliminated—replaced by a set of single-particle pilot-wave fields living in (...) ordinary physical space. Such a re-formulation of the Bohmian pilot-wave theory can exactly reproduce the statistical predictions of ordinary quantum theory. But this comes at the rather high ontological price of introducing an infinite network of interacting potential fields which influence the particles’ motion through the pilot-wave fields. We thus introduce an alternative approach which aims at achieving empirical adequacy with a more modest ontological complexity, and provide some preliminary evidence for optimism regarding the program of trying to replace the configuration space wave function with a set of fields in ordinary physical space. (shrink)

Charles Travis,Corinne Lajoie,Bruno Ambroise.

The goals of this chapter are to provide a concise and accessible overview of: the key events leading up to the legalization in CanadaCanada of medical assistance in dying (i.e., assisted suicide plus voluntary active euthanasia) in June 2016; the subsequent amendments to that legislation, passed in March 2021, and some of the parliamentary and public discussion surrounding it; and an analysis of where the country may be headed in the near future with respect to additional legislative changes and their (...) fallout in different regions of the country. (shrink)

Sometimes retracted or refuted scientific information is used and propagated long after it is understood to be misleading. Likewise, retracted news items may spread and persist, despite being publi...

In support of logical nihilism, according to which there are no logical laws, Gillian Russell offers purported counterexamples to two laws of logic. Russell’s examples rely on cleverly constructed predicates not found in ordinary English. I show that similar apparent counterexamples to the same logical laws can be constructed without exotic predicates but using only what ordinary language provides. We correctly analyze such arguments so that they do not actually constitute counterexamples to any logic laws. I claim that we can (...) and should do the same for Russell’s arguments. (shrink)

I formulate a compatibilism that is distinctively responsive to skeptical worries about the justification of punishment and other moral responsibility practices. I begin with an evolutionary story explaining why backward-looking reactive attitudes are “given” in human society. Cooperative society plausibly could not be sustained without such practices. The necessary accountability practices have complex internal standards. These internal standards may fully ground the appropriateness of reactive attitudes. Following a recent analogy, we can similarly hold that there are no external standards for (...) what is funny; the norms of comedy are complex, but funny is funny. However, this is compatible with moral reasons to change the practices themselves, and therefore change what is fitting within them: in the first instance, a moralistic “that's not funny” is ill-fitting, but “that shouldn't be funny” can be apt. The analogous reformist position prescribes practices constituting the minimal responsibility norms necessary for cooperative society. (shrink)

Puryear develops an objection against a prominent attempt to show that the universe must have a temporal beginning. Here I formulate a reply.

An abiding puzzle in the Phaedo is the transition in the text from initial pessimism about the possibility of wisdom during human life to a more optimistic view. Prominent interpretations posit different kinds or degrees of wisdom at issue in the two sets of passages. By contrast, I argue that the pessimistic view rests on the implicit premise that the soul cannot be completely purified during human life—a premise which arises from an initial conception of impurity and its cause. In (...) developing his eschatology, Socrates refines this conception and rejects the implicit premise. Because the embodied soul can be completely purified, it can achieve philosophical wisdom as well. (shrink)

I examine the historical development of the concept ``temperature'' from the point of view of questions about the stability of concepts during episodes of theory change. It is argued that the concept retains its identity and meaning through two quite radical developments in surrounding theory, even while these developments uncover novel fundamental characteristics of ``temperature'' and allow new associated definitions for the concept. I then indicate some of the differing underlying philosophical views which have caused others to view this kind (...) of case very differently, and finally suggest a number of features that I think a theory of concepts would need to possess in order to account for the important aspects of the presented case-study. (shrink)

Models based on possible worlds have proved to be very useful in the interpretation of modal expressions. However, there is a difference in the way that mathematicians and philosophers may use such models. The mathematician constructs them to serve his own purposes and thereby determines their properties. The philosopher, on the other hand, does not have so much freedom. His objective, which is to achieve a better understanding of language, puts limits on this. Not everything can be stipulated. This fact (...) is sometimes forgotten. An example of this is the almost unrestricted use of the notion of transworld identidy in philosophical explanations and discussions. The first objective of the article is to show that this unrestricted use is illegitimate. On the other hand, it would be important to maintain the possibility of using the notion. The second objective of the article is precisely to show how this can be achieved. The kind of structure which appears to be most appropriate to account for how modalities are applied to particulars is then made explicit, formal applications of the proposed model are briefly presented, and the conditions for the application of the notion of transworld identity in the interpretation of natural language are considered. (shrink)