We study the filter ℒ*(A) of computably enumerable supersets (modulo finite sets) of an r-maximal set A and show that, for some such set A, the property of being cofinite in ℒ*(A) is still Σ0 3-complete. This implies that for this A, there is no uniformly computably enumerable “tower” of sets exhausting exactly the coinfinite sets in ℒ*(A).

It is shown that in ZF set theory the axiom of choice holds iff every non empty topological space has a maximal closed filter.

In this paper, the notion of the radical of a filter in BL-algebras is defined and several characterizations of the radical of a filter are given. Also we prove that A/F is an MV-algebra if and only if Ds ⊆ F. After that we define the notion of semi maximal filter in BL-algebras and we state and prove some theorems which determine the relationship between this notion and the other types of filters of a BL-algebra. Moreover, (...) we prove that A/F is a semi simple BL-algebra if and only if F is a semi maximal filter of A. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. (shrink)

We explore the problem of constructing maximal and unbounded filters on computable posets. We obtain both computability results and reverse mathematics results. A maximal filter is one that does not extend to a larger filter. We show that every computable poset has a \Delta^0_2 maximal filter, and there is a computable poset with no \Pi^0_1 or \Sigma^0_1 maximal filter. There is a computable poset on which every maximal filter is Turing (...) complete. We obtain the reverse mathematics result that the principle "every countable poset has a maximal filter" is equivalent to ACA₀ over RCA₀. An unbounded filter is a filter which achieves each of its lower bounds in the poset. We show that every computable poset has a \Sigma^0_1 unbounded filter, and there is a computable poset with no \Pi^0_1 unbounded filter. We show that there is a computable poset on which every unbounded filter is Turing complete, and the principle "every countable poset has an unbounded filter" is equivalent to ACA₀ over RCA₀. We obtain additional reverse mathematics results related to extending arbitrary filters to unbounded filters and forming the upward closures of subsets of computable posets. (shrink)

I argue that classical counterfactual semantics in the style of Stalnaker, Lewis, and Kratzer validates an inference pattern that is disconfirmed in natural language. The solution is to alter the algorithm we use to handle inconsistency in premise sets: rather than checking all maximally consistent fragments of a premise sets, as in Krazter’s semantics, we selectively remove some of the premises. The proposed implementation starts from standard premise semantics and involves a new ‘filtering’ operation that achieves just this removal. The (...) resulting semantics is interestingly related to the semantics for counterfactuals emerging from Judea Pearl’s causal models framework in computer science: in particular, filtering is a possible worlds semantics counterpart of Pearl’s interventions. (shrink)

Two countable filters on ω are incompatible if they have no common infinite pseudointersection. Letting α(P f ) denote the minimal size of a maximal uncountable family of pairwise incompatible countable filters on ω, we prove the consistency of t $.

Two countable filters on $\omega$ are incompatible if they have no common infinite pseudointersection. Letting $\alpha(P_f)$ denote the minimal size of a maximal uncountable family of pairwise incompatible countable filters on $\omega$, we prove the consistency of t $< \alpha(P_f)$.

We introduce the property “F-linked” of subsets of posets for a given free filter F on the natural numbers, and define the properties “μ-F-linked” and “θ-F-Knaster” for posets in a natural way. We show that θ-F-Knaster posets preserve strong types of unbounded families and of maximal almost disjoint families. Concerning iterations of such posets, we develop a general technique to construct θ-Fr-Knaster posets (where Fr is the Frechet ideal) via matrix iterations of <θ-ultrafilter-linked posets (restricted to some level (...) of the matrix). This is applied to prove consistency results about Cichoń's diagram (without using large cardinals) and to prove the consistency of the fact that, for each Yorioka ideal, the four cardinal invariants associated with it are pairwise different. At the end, we show that three strongly compact cardinals are enough to force that Cichoń's diagram can be separated into 10 different values. (shrink)

For each integer $n\geq 2,{\Bbb MV}_{n}$ denotes the variety of MV-algebras generated by the MV-chain with n elements. Algebras in ${\Bbb MV}_{n}$ are represented as continuous functions from a Boolean space into a n-element chain equipped with the discrete topology. Using these representations, maximal subalgebras of algebras in ${\Bbb MV}_{n}$ are characterized, and it is shown that proper subalgebras are intersection of maximal subalgebras. When $A\in {\Bbb MV}_{3}$, the mentioned characterization of maximal subalgebras of A can be (...) given in terms of prime filters of the underlying lattice of A, in the form that was conjectured by A. Monteiro. (shrink)

For each integer n ≥ 2, MVn denotes the variety of MV-algebras generated by the MV-chain with n elements. Algebras in MVn are represented as continuous functions from a Boolean space into a n-element chain equipped with the discrete topology. Using these representations, maximal subalgebras of algebras in MVn are characterized, and it is shown that proper subalgebras are intersection of maximal subalgebras. When A ∈ MV3, the mentioned characterization of maximal subalgebras of A can be given (...) in terms of prime filters of the underlying lattice of A, in the form that was conjectured by A. Monteiro. (shrink)

For each integer n ≥ 2, MVn denotes the variety of MV-algebras generated by the MV-chain with n elements. Algebras in MVn are represented as continuous functions from a Boolean space into a n-element chain equipped with the discrete topology. Using these representations, maximal subalgebras of algebras in MVn are characterized, and it is shown that proper subalgebras are intersection of maximal subalgebras. When A ∈ MV3, the mentioned characterization of maximal subalgebras of A can be given (...) in terms of prime filters of the underlying lattice of A, in the form that was conjectured by A. Monteiro. (shrink)

This paper is one of several contributions in a series, illustrating the application of a specific deductive methodology to explain diversity of form. The methodology facilitates the explanation of feeding morphologies in various ducks as a transformation of the mallard's feeding design maximized for specific proportions of performance that are contributed by pecking and filter feeding mechanisms.The earlier described anatomy and formal analyses of the three mechanisms in the mallard served as the initial conditions used in simulation models. Four (...) elements of the feeding system were chosen that play a major role in all three mechanisms. For each element, the main parameter was selected: storage capacity of the rostral mouth cavity, transport capacity of the rostral mouth tube, storage capacity of the caudal mouth cavity and transport capacity of the caudal mouth tube. The boundary conditions for the simulation were determined from internal organismic constraints. The total food uptake of the mallard was regarded as the function to be maximized. This object function is the summation of the food uptake by one second of pecking and one second of filter feeding. The drinking mechanism was shown not to interfere, since that mechanism operates sufficiently whenever the pumping mechanism works properly. (shrink)

There is a systemic condition inherent in contemporary markets that compel managers not to pursue more morally preferable initiatives if those initiatives will require actions that conflict with profit maximization. Normative arguments for implementing morally preferable practices within the existing system fail because they are insufficient to counter-act the systemic conditions affecting decision-making that is focused on maximizing profit as the primary operational value. To overcome this constraint we must elevate a more normatively preferable value, ‚ideal environmental sustainability,’ to the (...) level of being the primary filtering value through which other competing values are evaluated, prioritized, and implemented. In order for this to occur in practice, a change must be made relative to the laws, rules, and regulations that define and guide the market. This can be done by suitably defining the epistemic constraint of impartiality utilizing Rawls’ notion of a ‚veil of ignorance’ as a heuristic device. (shrink)

In this article, we describe and attempt to solve a puzzle arising from the interpretation of modified numerals like less than five and between two and five. The puzzle is this: such modified numerals seem to mean different things depending on whether they combine with distributive or non-distributive predicates. When they combine with distributive predicates, they intuitively impose a kind of upper bound, whereas when they combine with non-distributive predicates, they do not. We propose and explore in detail four solutions (...) to this puzzle, each involving some notion of maximality, but differing in the type of maximality involved and in the source of maximality. While the full range of data we consider do not conclusively favor one theory over the other three, we do argue that overall the evidence goes against the view that modified numerals lexically encode a ‘standard’ maximality operator, and suggests the need for a pragmatic blocking mechanism that filters out readings of sentences that are generated by the grammar but intuitively unavailable. (shrink)

Let I0 be a a computable basis of the fully effective vector space V∞ over the computable field F. Let I be a quasimaximal subset of I0 that is the intersection of n maximal subsets of the same 1-degree up to *. We prove that the principal filter \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathcal{L}^{\ast}(V,\uparrow )}$$\end{document} of V = cl(I) is isomorphic to the lattice \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathcal{L}(n, \overline{F})}$$\end{document} (...) of subspaces of an n-dimensional space over \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\overline{F}}$$\end{document}, a \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\Sigma _{3}^{0}}$$\end{document} extension of F. As a corollary of this and the main result of Dimitrov (Math Log 43:415–424, 2004) we prove that any finite product of the lattices \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${(\mathcal{L}(n_{i}, \overline{F }_{i}))_{i=1}^{k}}$$\end{document} is isomorphic to a principal filter of \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathcal{ L}^{\ast}(V_{\infty})}$$\end{document}. We thus answer Question 5.3 “What are the principal filters of \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathcal{L}^{\ast}(V_{\infty})?}$$\end{document} ” posed by Downey and Remmel (Computable algebras and closure systems: coding properties, handbook of recursive mathematics, vol 2, pp 977–1039, Stud Log Found Math, vol 139, North-Holland, Amsterdam, 1998) for spaces that are closures of quasimaximal sets. (shrink)

While much research has focused on the effects of ethical and unethical leadership, little is known about how followers come to perceive their leaders as ethical or unethical. In this article, we investigate the co-creation of ethical and unethical leadership perceptions. Specifically, we draw from emerging research on moral congruence in organizational behaviour and empirically investigate the role of congruence in leaders’ and followers’ moral foundations in followers’ perceptions of ethical and unethical leadership. By analysing objective congruence scores from 67 (...) leader–follower dyads by means of polynomial regression with surface response analysis, we find partial support for our theoretically derived predictions. Significant effects were revealed for the fairness, loyalty, and authority moral foundations but not for the care and sanctity moral foundations. We discuss theoretical and practical implications of these findings. (shrink)

In an ideal democracy, people from all walks of life would come together to talk meaningfully and respectfully about politics. But we do not live in an ideal democracy. In contemporary democracies, which are marked by deep social divisions, different groups for the most part avoid talking to each other. And when they do talk to each other, their speech often seems to be little more than a vehicle for rage, hatred, and deception. -/- Democratic Speech in Divided Times argues (...) that we should nevertheless not give up on the ideal of democratic public speech. Drawing on the resources of political theory, epistemology, and philosophy of language, this book develops a sustained account of the norms that should govern public discourse in deeply divided circumstances. Should we try to find common ground when we talk to our political opponents, even though they seem unreasonable? Should we refrain from expressing anger, if we want to get things done? How can we use our speech to fight hate speech and disinformation? And is it even possible to speak to 'the other side,' in settings where different groups dislike one another, live apart from one another, and don't know much about one another? By tackling these questions, Lepoutre demonstrates that, when governed by the right set of norms, public speech can be a powerful force for good even amidst profound social divisions. (shrink)

Traditional approaches describe ethical decision-making of leaders as driven by conscious deliberation and analysis. Accordingly, existing approaches of ethically-oriented leader development usually focus on the promotion of deliberative ethical decision-making, based on normative knowledge and moral reasoning. Yet, a continually growing body of research indicates that a considerable part of moral functions involved in ethical decision-making is automatic and intuitive. In this article, we discuss the implications of this moral intuition approach for the domain of ethically-oriented leader development. Specifically, we (...) introduce a conceptual model and develop a set of theoretical propositions, suggesting that the moral intuition perspective significantly contributes to effective ethically-oriented leader development. The discussion examines theoretical implications and practical applications of the presented propositions and outlines directions for future research. (shrink)

Human activity is permeated by norms of all sorts: moral norms provide the 'code' for what we ought to do, norms of logic regulate how we ought to reason, scientific norms set the standards for what counts as knowledge, legal norms determine what is lawfully permitted and what isn't, aesthetic norms establish canons of beauty and shape artistic trends and practices, and socio-cultural norms provide criteria for what counts as tolerable, just, praiseworthy, or unacceptable in a community or milieu. Given (...) the diversity of norm-governed phenomena prevailing in our everyday experience, it is not surprising that the question of normativity has recently generated important debates in philosophy. However, the more specific question concerning the nature and function of 'norms in perceptual experience' has received comparatively little attention. This volume brings together scholars from philosophy of mind, philosophy of perception, and phenomenology to explore this question. (shrink)

Public opinion research has shown that voters accept many falsehoods about politics. This observation is widely considered troubling for democracy—and especially participatory ideals of democracy. I argue that this influential narrative is nevertheless flawed, because it misunderstands the nature of political understanding. Drawing on philosophical examinations of scientific modelling, I demonstrate that accepting falsehoods within one’s model of political reality is compatible with—and indeed can positively enhance—one’s understanding of that reality. Thus, the observation that voters accept many political falsehoods does (...) not necessarily establish that they lack political understanding. I then address three worries: that voters cannot generally engage in such political modelling; that political modelling obscures facts that are crucial to political understanding; and that successful political modelling would require knowing that one’s model contains falsehoods. My responses reveal how, going forward, we should measure political ignorance; and they highlight the standing importance of participatory democracy. (shrink)

How promising is Bitcoin as a currency? This paper discusses four claims on the advantages of Bitcoin: a more stable currency than state-backed ones; a secure and efficient payment system; a credible alternative to the central management of money; and a better protection of transaction privacy. We discuss these arguments by relating them to their philosophical roots in libertarian and neoliberal theories, and assess whether Bitcoin can effectively meet these expectations. We conclude that despite its advocates’ enthusiasm, there are good (...) reasons to doubt that Bitcoin can fulfill its promises and act as a functioning currency, rather than as a mere speculative asset. (shrink)

Jeremy Waldron, among others, has forcefully argued that public hate speech assaults the dignity of its targets. Without denying this claim, I contend that it fails to establish that bans, rather than counterspeech, are the appropriate response. By articulating a more refined understanding of counterspeech, I suggest that counterspeech constitutes a better way of blocking hate speech’s dignitarian harm. In turn, I address two objections: according to the first, which draws on contemporary philosophy of language, counterspeech does not block enough (...) hate speech; according to the second, counterspeech blocks too much speech. Although these objections should qualify our optimism regarding counterspeech, I demonstrate that each can be turned, with even greater force, against hate speech bans. (shrink)

During the Zimbabwean crisis, millions crossed through the apartheid-era border fence, searching for ways to make ends meet. Maxim Bolt explores the lives of Zimbabwean migrant labourers, of settled black farm workers and their dependants, and of white farmers and managers, as they intersect on the border between Zimbabwe and South Africa. Focusing on one farm, this book investigates the role of a hub of wage labour in a place of crisis. A close ethnographic study, it addresses the complex, shifting (...) labour and life conditions in northern South Africa's agricultural borderlands. Underlying these challenges are the Zimbabwean political and economic crisis of the 2000s and the intensified pressures on commercial agriculture in South Africa following market liberalization and post-apartheid land reform. But, amidst uncertainty, farmers and farm workers strive for stability. The farms on South Africa's margins are centers of gravity, islands of residential labour in a sea of informal arrangements. (shrink)

This is the introduction to the symposium on Maxime Lepoutre, Democratic Speech in Divided Times (Oxford: Oxford University Press, 2021). The symposium contains articles by Paul Billingham, Rachel Fraser, and Michael Hannon, and a response by the author.

According to an influential objection, which Martha Nussbaum has powerfully restated, expressing anger in democratic public discourse is counterproductive from the standpoint of justice. To resist this challenge, this article articulates a crucial yet underappreciated sense in which angry discourse is epistemically productive. Drawing on recent developments in the philosophy of emotion, which emphasize the distinctive phenomenology of emotion, I argue that conveying anger to one’s listeners is epistemically valuable in two respects: first, it can direct listeners’ attention to elusive (...) morally relevant features of the situation; second, it enables them to register injustices that their existing evaluative categories are not yet suited to capturing. Thus, when employed skillfully, angry speech promotes a greater understanding of existing injustices. This epistemic role is indispensable in highly divided societies, where the injustices endured by some groups are often invisible to, or misunderstood by, other... (shrink)

Philosophy &Public Affairs, Volume 48, Issue 1, Page 40-78, Winter 2020.

An influential critique of anger holds that anger comes at an important epistemic cost. In particular, feeling angry typically makes risk less visible to us. This is anger’s ‘red mist.’ These epistemic costs, critics suggest, arguably outweigh the epistemic benefits commonly ascribed to anger. This essay argues that the epistemic critique of anger is importantly misleading. This is not because it underestimates anger’s epistemic benefits, but rather because it overlooks the fact that anger’s red mist performs a crucial moral function. (...) By concealing risk, the red mist helps protect the dignity and self-respect of those who live under severe and unchosen risk. This function is vitally important in non-ideal circumstances, where many are unjustly subjected to dignity-impairing risk. And it is irreplaceable, in that it cannot readily be performed by other political emotions, such as hope. Beyond providing a novel defence of anger, this argument has a broader upshot. Anger’s red mist reveals that ignorance is not always problematic in politics. Accordingly, it should not be treated—as has standardly been the case—as an unmitigated political evil. In the first instance, our efforts are better spent ascertaining when ignorance is a problem, and when, instead, it performs a felicitous function. (shrink)

Faced with hate speech, oppressed groups can use their own speech to respond to their verbal oppressors. This “counterspeech,” however, sometimes itself takes on a hateful form. This paper explores the moral standing of such “hateful counterspeech.” Is there a fundamental moral asymmetry between hateful counterspeech, and the hateful utterances of dominant or oppressive groups? Or are claims that such an asymmetry exists indefensible? I argue for an intermediate position. There _is_ a key moral asymmetry between these two forms of (...) speech. But, this asymmetry notwithstanding, hateful counterspeech is capable of enacting serious harms—and so, contrary to what many legal theorists have argued, it is in principle an appropriate object of legal regulation. I begin by considering the central argument for thinking that hateful counterspeech is not seriously troubling. This argument holds that oppressed groups lack authority—and, by extension, “speaker power.” Yet this argument, I suggest, sits in tension with the fact that low-status members of dominant groups can, through their utterances, seriously harm members of oppressed groups. Philosophers of language have developed sophisticated arguments to explain this last phenomenon: they have argued that speaker power is relativised to particular jurisdictions; that it can be acquired dynamically in local settings; and that it is socially dispersed. I argue that, in light of these arguments, it appears that hateful counterspeech, too, can generate serious harms. Nevertheless, I show that this conclusion is compatible with recognising a crucial moral asymmetry between hateful counterspeech and the hate speech of oppressors. (shrink)

Ignorant speech, which spreads falsehoods about people and policies, is pervasive in public discourse. A popular response to this problem recommends countering ignorant speech with more speech, rather than legal regulations. However, Mary Kate McGowan has influentially argued that this ‘counterspeech’ response is flawed, as it overlooks the asymmetric pliability of conversational norms: the phenomenon whereby some conversational norms are easier to enact than subsequently to reverse. After demonstrating that this conversational ‘stickiness’ is an even broader concern for counterspeech than (...) McGowan suggests—it applies not just to oppressive or hateful speech, but also to ordinary policy-related misinformation—I argue that a more sophisticated account of counterspeech can nevertheless overcome it. First, the stickiness objection overlooks the distinction between ‘negative’ and ‘positive’ counterspeech. Instead of directly negating a distorted proposition, positive counterspeech affirms a correct proposition that is inconsistent with the falsehoods at hand. This, I contend, allows it to counter ignorant speech without triggering the properties that render it sticky. Second, the stickiness objection presupposes an unrefined conception of counterspeech’s temporality. Counterspeech should be understood as a diachronic process, which not only follows, but also pre-empts, ignorant utterances. Drawing on speech-act theories of silencing, I argue that pre-emptive counterspeech can condition the conversational context so as to prevent subsequent ignorant utterances from enacting sticky conversational norms. Thus, this theoretically-refined conception of counterspeech helps appreciate how verbal responses might overcome the stickiness of conversational norms; and, in doing so, it reveals that this stickiness need not provide reasons to prefer legal remedies to counterspeech. (shrink)

The notions of perceptual normativity and optimality have generated much discussion in the last decade or so in the literature on Merleau-Ponty. Husserl’s position on the topic has been far less extensively investigated. Surprisingly, however, Husserl wrote a great deal about the question of perceptual optimality. Not only are there a considerable number of important passages scattered throughout the manuscripts, the archive also contains a few important full texts on precisely this issue. Given the role of fulfillment for Husserl’s concept (...) of intentionality, this should not really come as a surprise, since the teleological nature of the fulfillment structure terminates in an experience of the optimum. Hence, however marginal this topic might seem at first glance, reflecting on it rapidly leads us to the heart of Husserl’s project and sheds further light on his conception of intentional experience. (shrink)

Jeremy Waldron, among others, has forcefully argued that public hate speech assaults the dignity of its targets. Without denying this claim, I contend that it fails to establish that bans, rather than counterspeech, are the appropriate response. By articulating a more refined understanding of counterspeech, I suggest that counterspeech constitutes a better way of blocking hate speech’s dignitarian harm. In turn, I address two objections: according to the first, which draws on contemporary philosophy of language, counterspeech does not block enough (...) hate speech; according to the second, counterspeech blocks too much speech. Although these objections should qualify our optimism regarding counterspeech, I demonstrate that each can be turned, with even greater force, against hate speech bans. (shrink)

Cognitive test batteries are widely used in diverse research fields, such as cognitive training, cognitive disorder assessment, or brain mechanism understanding. Although they need flexibility according to their usage objectives, most test batteries are not available as open-source software and are not be tuned by researchers in detail. The present study introduces an open-source cognitive test battery to assess attention and memory, using a javascript library, p5.js. Because of the ubiquitous nature of dynamic attention in our daily lives, it is (...) crucial to have tools for its assessment or training. For that purpose, our test battery includes seven cognitive tasks, common in cognitive science literature. By using the test battery, we conducted an online experiment to collect the benchmark data. Results conducted on 2 separate days showed the high cross-day reliability. Specifically, the task performance did not largely change with the different days. Besides, our test battery captures diverse individual differences and can evaluate them based on the cognitive factors extracted from latent factor analysis. Since we share our source code as open-source software, users can expand and manipulate experimental conditions flexibly. Our test battery is also flexible in terms of the experimental environment, i.e., it is possible to experiment either online or in a laboratory environment. (shrink)

When is choice affected by subliminal messages? This question has fascinated scientists and lay people alike, but it is only recently that reliable empirical data began to emerge. In the current paper we bridge the literature on implicit motivation and that on subliminal persuasion. We suggest that motivation in general, and implicit motivation more specifically, plays an important role in subliminal persuasion: It sensitizes us to subliminal cues. To examine this hypothesis we developed a new paradigm that allows powerful tests (...) of subliminal influences as well as stringent assessments of subliminality. The results of two experiments suggest that implicit motivation can enhance the effects of subliminal priming on choice. (shrink)

Maxime F. Giguère Cet article propose une nouvelle stratégie pour écarter la conclusion sceptique, mise de l’avant par Thomas Szasz, selon laquelle la psychiatrie est illégitime. La conclusion sceptique repose sur une démarcation radicale entre troubles mentaux et somatiques. Afin de minimiser cette démarcation, Jerome Wakefield emploie une analyse conceptuelle stipulant que les troubles mentaux et somatiques sont tous les deux des dysfonctions préjudiciables. De récentes critiques ont toutefois montré que son analyse bute sur la difficulté pratique de distinguer les (...) fonctions normales des dysfonctions. En raison de ce problème, l’analyse de Wakefield ne permet pas d’écarter la conclusion sceptique. Une nouvelle stratégie ne nécessitant pas de résoudre le problème reconnu par ces critiques s’annonce alors préférable pour écarter la conclusion sceptique. (shrink)

This is a survey paper giving a self-contained account of Shelah's theory of the pcf function pcf={cf:D is an ultrafilter on a}, where a is a set of regular cardinals such that a

Logic and Philosophy of Logic

Logic and Philosophy of Logic, Miscellaneous in Logic and Philosophy of Logic

Model Theory in Logic and Philosophy of Logic

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Counterspeech is communication that tries to counteract potential harm brought about by other speech. Theoretical interest in counterspeech partly derives from a libertarian ideal – as captured in the claim that the solution to bad speech is more speech – and partly from a recognition that well-meaning attempts to counteract harm through speech can easily misfire or backfire. Here we survey recent work on the question of what makes counterspeech effective at remedying or preventing harm, in those cases where it (...) is effective, as well as work investigating when and why there is a duty to engage in counterspeech. We suggest that the most fruitful area for philosophical inquiry on this topic, currently, relates to the questions about efficacy. Specifically, we argue that there is a need for better frameworks for conceptualizing the efficacy of counterspeech. Philosophers have collaborative work to do, alongside social scientists, in developing these frameworks. (shrink)

The main theme of Steve Crowell’s excellent Normativity and Phenomenology in Husserl and Heidegger is ‘the connection between normativity and meaning’ (p. 1), a central issue in both Husserl’s and...

We propose in this paper DIAL, a framework for inter-agents dialogue, which formalize a collective decision-making process to compose divergent interests and perspectives. This framework bounds a dialectics system in which argumentative agents play and arbitrate to reach an agreement. For this purpose, we propose an argumentation-based reasoning to manage the conflicts between arguments having different strengths for different agents. Moreover, we propose a model of argumentative agents which justify the hypothesis to which they commit and take into account the (...) commitments of their interlocutors according to their reputations. In the scope of our dialectics system, a third agent is responsible of the final decision outcome which is taken by resolving the conflict between two players according to their competences and the advanced arguments. (shrink)