[1] Dalle origini all'Ottocento. 3 t., a cura di V. Mathieu.--[2] Il pensiero contemporaneo. 3 t., a cura di A. Bausola.

This article focuses on defective conditionals ? namely indicative conditionals whose antecedents are false and whose truth-values therefore cannot be determined. The problem is to decide which formal connective can adequately represent this usage. Classical logic renders defective conditionals true whereas traditional mathematics dismisses them as irrelevant. This difference in treatment entails that, at the propositional level, classical logic validates some sentences that are intuitively false in plane geometry. With two proofs, I show that the same flaw is shared by (...) a family of trivalent logics. I go on to examine the strict conditional and its derivatives. This family is the only one to avoid the faulty inference but it does so without addressing the status of the truth-value assigned to defective conditionals. (shrink)

According to Clifford Geertz, the purpose of anthropology is not to explain culture but to explicate it. That should cause us to rethink our relationship with machine learning. It is, we contend, perfectly possible that machine learning algorithms, which are unable to explain, and could even be unexplainable themselves, can still be of critical use in a process of explication. Thus, we report on an experiment with anthropological AI. From a dataset of 175K Facebook comments, we trained a neural network (...) to predict the emoji reaction associated with a comment and asked a group of human players to compete against the machine. We show that a) the machine can reach the same accuracy as the players, b) it fails in roughly the same ways as the players, and c) easily predictable emoji reactions tend to reflect unambiguous situations where interpretation is easy. We therefore repurpose the failures of the neural network to point us to deeper and more ambiguous situations where interpretation is hard and explication becomes both necessary and interesting. We use this experiment as a point of departure for discussing how experiences from anthropology, and in particular the tension between formalist ethnoscience and interpretive thick description, might contribute to debates about explainable AI. (shrink)

There is now an awakening to and recognition of the emotionally complex lives of some non-human animals. While their forms of consciousness may vary, some are indeed conscious and deserve political consideration. What that political consideration ought to be is the central topic of this article. First, I argue that interspecies justice must be understood in terms of the relationships that foster individual flourishing of all concerned. The obstacles to such flourishing are the five faces of oppression famously identified by (...) Iris Marion Young: exploitation, marginalization, powerlessness, cultural imperialism, and violence. By extending Young’s concept of the social group to intra- and interspecies groups, we become more attuned to differences between and among species. Theorizing the existence of interspecies groups brings forward new avenues to explore oppression and simultaneously theorize its opposite – interspecies justice. Second, I argue that a positive theory of interspecies flourishing can be developed on the basis of Marx’s materialist philosophy and reclamation of species-being. Though Marx uses humanist language throughout the Economic and Philosophic Manuscripts of 1844, attention to his methodological commitments reveals that some non-human animals can no longer be excluded from the capability of flourishing and species-being. Some non-human animals are conscious, act purposefully, and labor creatively and must be included in our circle of moral and political concern. (shrink)

Bringing Pierre Bourdieu to Science and Technology Studies Content Type Journal Article Pages 263-273 DOI 10.1007/s11024-011-9174-2 Authors Mathieu Albert, Wilson Centre and Department of Psychiatry, Faculty of Medicine, University of Toronto, 200 Elizabeth Street , Eaton-South 1-581, Toronto, ON M5G 2C4, Canada Daniel Lee Kleinman, Department of Community and Environmental Sociology, University of Wisconsin-Madison, 348 Agricultural Hall 1450 Linden Drive, Madison, WI 53706, USA Journal Minerva Online ISSN 1573-1871 Print ISSN 0026-4695 Journal Volume Volume 49 Journal Issue Volume 49, (...) Number 3. (shrink)

A Polish space is not always homeomorphic to a computably presented Polish space. In this article, we examine degrees of non-computability of presenting homeomorphic copies of compact Polish spaces. We show that there exists a $\mathbf {0}'$ -computable low $_3$ compact Polish space which is not homeomorphic to a computable one, and that, for any natural number $n\geq 2$, there exists a Polish space $X_n$ such that exactly the high $_{n}$ -degrees are required to present the homeomorphism type of $X_n$. (...) Along the way we investigate the computable aspects of Čech homology groups. We also show that no compact Polish space has a least presentation with respect to Turing reducibility. (shrink)

This article maps a controversy in network science over the last 15 years, dividing the field about the epistemic status of a central notion, scale-freeness. The article accounts for the two main disputes, in 2005 and in 2018, as they unfolded in academic publications and on social media. This article analyzes the conflict, and the reasons why it reignited in 2018, to the surprise of many. It is argued that the concept of complex networks is shared by the distinct subcultures (...) of theorists and experimentalists; and that these subcultures have incompatible approaches to knowledge: nomothetic and idiographic. Following Galison, this article contends that network science is a trading zone where theorists and experimentalists can trade knowledge across the epistemic divide. (shrink)

This paper presents the first possible world semantics for concessive conditionals (i.e., even if A, C conditionals) constructed in a compositional way. First, the meaning of if is formalized through a semantics that builds on the proposal given by Stalnaker (1968). A major difference from Stalnaker’s approach is that irrelevant conditionals (i.e., conditionals where the antecedent and the consequent have no connection) are false in this new setting. Second, the meaning of even is analyzed through a formal semantics based on (...) the notion of scale. This analysis overcomes the problems arising in standard approaches, in which even is analyzed with the help of pragmatic presuppositions. Finally, the two particles are combined in order to provide a formal analysis of even if. This theory predicts the major phenomena concerning the behavior of concessive conditionals and without any call to pragmatic explanations. More generally, this approach creates the possibility of a compositional analysis of other conditionals such as if then or only if forms. (shrink)

Research has shown that context influences how sincere a smile appears to observers. That said, most studies on this topic have focused exclusively on situational cues (e.g. smiling while at a party versus smiling during a job interview) and few have examined other elements of context. One important element concerns any knowledge an observer might have about the smiler as an individual (e.g. their habitual behaviours, traits or attitudes). In this manuscript, we present three experiments that explored the influence of (...) such knowledge on ratings of smile sincerity. In Experiments 1 and 2, participants rated the sincerity of Duchenne and non-Duchenne smiles after having been exposed to cues about the smiler’s tendency to reciprocate (this person always, never or occasionally returns favours). In Experiment 3 they performed the same task but with cues about the smiler’s love of learning (this person always, never or occasionally enjoys learning new tasks). The results show that cues about the smiler’s reciprocity tendency influenced participants’ ratings of smile sincerity and did so in a stronger manner than cues about the smiler’s love of learning. Overall, these results both strengthen and broaden the literature on the role of context on judgements of smile sincerity. (shrink)

This paper argues that most contemporary accounts of weakness of will either implicitly or explicitly assume that regret is a typical or even necessary element of standard cases of weakness of will and that this assumption is mistaken. I draw on empirical and philosophical work on self-assessment to show that regret need not accompany typical weak-willed behavior, and that we should therefore revise the dominant account of the difference between weakness of will and changes of mind.

Thesis (Ph.D, Philosophy) -- Queen's University, 2009-08-31 12:18:30.156.

We present the inconsistency-adaptive deontic logic DP r , a nonmonotonic logic for dealing with conflicts between normative statements. On the one hand, this logic does not lead to explosion in view of normative conflicts such as O A ∧ O ∼A, O A ∧ P ∼A or even O A ∧ ∼O A. On the other hand, DP r still verifies all intuitively reliable inferences valid in Standard Deontic Logic (SDL). DP r interprets a given premise set ‘as normally (...) as possible’ with respect to SDL. Whereas some SDL-rules are verified unconditionally by DP r , others are verified conditionally. The latter are applicable unless they rely on formulas that turn out to behave inconsistently in view of the premises. This dynamic process is mirrored by the proof theory of DP r. (shrink)

La thèse que présuppose ce livre est la suivante : la modernité, que l'on dit "désenchantée", est triste, parce que désenchantée. Les textes qui y sont rassemblés veulent mettre en présence, mais aussi en question, les deux sens du mot "désenchantement" : l'idée que l'avancement de la "raison instrumentale" (C Taylor)s'est accompagné du recul du domaine du magique, du merveilleux, du mythe, et celle selon laquelle la modernité est morose. Mais il s'agit ici de penser moins la morosité que la (...) joie liée à ce que pourrait être une philosophie du réenchantement du monde. Non pas tant, donc, replonger dans les thèses sur le désenchantement qu'imaginer ce que pourrait être un certain réenchantement. A cet égard, on a voulu porter un regard privilégié sur l'enfance, "terre de l'humain" (T De Koninck), comme sur une manière d'idéal qui pointerait vers la question du sens d'une existence qui vaille d'être vécue. Le pari de ce projet est en définitive qu'une philosophie du réenchantement du monde témoignera que la vie peut être une aventure exaltante, passionnante, un parcours sensé et par conséquent rempli d'espoir, comme dans ces contes pour enfants qui jadis faisaient notre joie. (shrink)

We present two defeasible logics of norm-propositions (statements about norms) that (i) consistently allow for the possibility of normative gaps and normative conflicts, and (ii) map each premise set to a sufficiently rich consequence set. In order to meet (i), we define the logic LNP, a conflict- and gap-tolerant logic of norm-propositions capable of formalizing both normative conflicts and normative gaps within the object language. Next, we strengthen LNP within the adaptive logic framework for non-monotonic reasoning in order to meet (...) (ii). This results in the adaptive logics LNPr and LNPm, which interpret a given set of premises in such a way that normative conflicts and normative gaps are avoided ‘whenever possible’. LNPr and LNPm are equipped with a preferential semantics and a dynamic proof theory. (shrink)

Prior work on weakness of will has assumed that it is a thoroughly psychological phenomenon. At least, it has assumed that ordinary attributions of weakness of will are purely psychological attributions, keyed to the violation of practical commitments by the weak-willed agent. Debate has recently focused on which sort of practical commitment, intention or normative judgment, is more central to the ordinary concept of weakness of will. We report five experiments that significantly advance our understanding of weakness of will attributions (...) by showing that the ordinary concept of weakness of will is less thoroughly psychological than the philosophical debate has assumed. We begin by showing that a sizable minority of people attribute weakness of will even in the absence of a violated commitment (Experiment 1). We then show that weakness of will attributions are sensitive to two important non-psychological factors. First, for actions stereotypically associated with weakness of will, the absence of certain commitments often triggers weakness of will attributions (Experiments 2–4). Second, the quality of an action’s outcome affects the extent to which an agent is viewed as weak-willed: actions with bad consequences are more likely to be viewed as weak-willed (Experiment 5). Our most important finding is that the ordinary concept of weakness of will is sensitive to two non-psychological factors and is thus much broader than philosophers have thus far imagined. We conclude by suggesting a two-tier model that unites our findings with traditional philosophical theorizing about weakness of will. (shrink)