Positioning technologies, such as GPS are widespread in society but are used only sparingly in behavioural science research, e.g., because processing positioning technology data can be cumbersome. The current work attempts to unlock positioning technology potential for behavioural science studies by developing and testing a research tool to analyse GPS tracks. This tool—psyosphere—is published as open-source software, and aims to extract behaviours from GPSs data that are more germane to behavioural research. Two field experiments were conducted to test application of (...) the research tool. During these experiments, participants played a smuggling game, thereby either smuggling tokens representing illicit material past border guards or not. Results suggested that participants varied widely in variables, such as course and speed variability and distance from team members in response to the presence of border guards. Subsequent analyses showed that some of these GPS-derived behavioural variables could be linked to self-reported mental states, such as fear. Although more work needs to be done, the current study demonstrates that psyosphere may enable researchers to conduct behavioural experiments with positioning technology, outside of a laboratory setting. (shrink)

We are immersed within an odorous sea of chemical currents that we parse into individual odors with complex structures. Odors have been posited as determined by the structural relation between the molecules that compose the chemical compounds and their interactions with the receptor site. But, naturally occurring smells are parsed from gaseous odor plumes. To give a comprehensive account of the nature of odors the chemosciences must account for these large distributed entities as well. We offer a focused review of (...) what is known about the perception of odor plumes for olfactory navigation and tracking, which we then connect to what is known about the role odorants play as properties of the plume in determining odor identity with respect to odor quality. We end by motivating our central claim that more research needs to be conducted on the role that odorants play within the odor plume in determining odor identity. (shrink)

Capital punishment—the legally authorized killing of a criminal offender by an agent of the state for the commission of a crime—stands in special need of moral justification. This is because execution is a particularly severe punishment. Execution is different in kind from monetary and custodial penalties in an obvious way: execution causes the death of an offender. While fines and incarceration set back some of one’s interests, death eliminates the possibility of setting and pursuing ends. While fines and incarceration narrow (...) one’s routes to happiness, death eliminates its possibility. Not surprisingly, there is much debate about the moral permissibility of capital punishment. This entry maps the terrain of this debate. The first section discusses justifications of the death penalty as they appear in major theories of punishment. The second section surveys moral objections to execution that apply to most justifications. The third addresses procedural criticisms, which do not target the morality of execution so much as the justice of its implementation. (shrink)

Sex differences in reproductive strategy and the sexual division of labor resulted in selection for and maintenance of sexual dimorphism across a wide range of characteristics, including body size, hormonal physiology, behavior, and perhaps spatial abilities. In laboratory tasks among undergraduates there is a general male advantage for navigational and mental-rotation tasks, whereas studies find female advantage for remembering item locations in complex arrays and the locations of plant foods. Adaptive explanations of sex differences in these spatial abilities have focused (...) on patterns of differential mate search and routine participation in distinct subsistence behaviors. The few studies to date of spatial ability in nonindustrial populations practicing subsistence lifestyles, or across a wider age range, find inconsistent results. Here we examine sex- and age-based variation in one kind of spatial ability related to navigation, dead-reckoning, among Tsimane forager horticulturalists living in lowland Bolivia. Seventy-three participants (38 male) aged 6–82 years pointed a handheld global positioning system (GPS) unit toward the two nearest communities and the more distant market town. We find no evidence of sex differences in dead reckoning (p = 0.47), nor do we find any evidence of age-related decline in dead-reckoning accuracy (p = 0.28). Participants were significantly more accurate at pointing toward the market town than toward the two nearest villages despite its being significantly farther away than the two nearest communities. Although Tsimane do show sexual dimorphism in foraging tasks, Tsimane women have extensive daily and lifetime travel, and the local environment lacks directional cues that typically enhance male navigation. This study raises the possibility that greater similarity in mobility patterns because of overlapping subsistence strategies and activities may result in convergence of some male and female navigation abilities. (shrink)

Biobanks are designed with particular purposes in mind. These purposes are reflected in the governance frameworks that define the conditions for participation and access by researchers. In this paper, I analyse two different models: the commercially aligned deCODE biobank and the ‘public good’ framework of UK Biobank. These diametric models have both featured ‘the public interest’ as pivotal to their achievements. However, if properly understood, the public interest rhetoric of deCODE actually conflicts with any professed community interest. The reasons why (...) are explained, and the effects this has on conditions for participation are critiqued, before reflecting on how each model might have an impact on reproductive health research. (shrink)

The article explores the historicity of political subjecthood, making the case that through a process of subjectification “subjects of the king” gradually became the political subjects of the state. This in turn contributed to reconstitute the state as an abstract notion that nevertheless was real through the allegiance owed to it by its subjects. Addressing the making of subjecthood in relation to state formation helps fill an important lacuna in the literature on state formation, namely the double oversight of subjecthood. (...) Either studies of state formation have taken both territory and subjecthood—the two objects of state power—for granted, or, more recently, they have assumed that changes in subjecthood were a function of changes in territoriality. I propose to address this by inquiring into early modern subjecthood in its own right, through a historical exploration of the emergence of political subjecthood in English statutes during the Tudor period. Through gradual yet incremental changes in the relation between subject/king and subject/state, the political subject’s allegiance to the state changed and acquired a “taken-for-grantedness”—maintained and reinforced through constant legal reiteration. (shrink)

According to the Bayesian paradigm in the psychology of reasoning, the norms by which everyday human cognition is best evaluated are probabilistic rather than logical in character. Recently, the Bayesian paradigm has been applied to the domain of argumentation, where the fundamental norms are traditionally assumed to be logical. Here, we present a major generalisation of extant Bayesian approaches to argumentation that utilizes a new class of Bayesian learning methods that are better suited to modelling dynamic and conditional inferences than (...) standard Bayesian conditionalization, is able to characterise the special value of logically valid argument schemes in uncertain reasoning contexts, greatly extends the range of inferences and argumentative phenomena that can be adequately described in a Bayesian framework, and undermines some influential theoretical motivations for dual function models of human cognition. We conclude that the probabilistic norms given by the Bayesian approach to rationality are not necessarily at odds with the norms given by classical logic. Rather, the Bayesian theory of argumentation can be seen as justifying and enriching the argumentative norms of classical logic. (shrink)

Gadamer has written several powerful studies of Platonic dialectic. His emphasis on shared understanding, the fusing of horizons and other hermeneutic notions are partially drawn from a study of Plato’s elenctic dialogues. However, Socrates in Gorgias makes a claim about the imperative of self-refutation that not only complicates our understanding of Socratic method, but Gadamer’s reading of it as well. This article is meant to explore just how the imperative of self-refutation causes difficulty for Gadamer’s understanding of dialectic, especially his (...) distinction between authentic and inauthentic dialectic. After considering the nature of ‘refutation’, this article will examine whether Gadamer’s notions of shared understanding, the ‘facts of the matter’, and self-understanding help us to resolve this problem. It shall be concluded that the teacher must take any refutations of his/her own views seriously, but has no special obligation to refute (introspectively) any of their own views, even those beliefs, theories, principles or criteria that enable him to guide the argument. (shrink)

v. 1. Charmides. Lysis. Laches. Protagoras. Euthydemus. Cratylus. Phaedrus. Ion. Symposium.--v. 2. Meno. Euthyphro. Apology. Crito. Phaedo. Georgias. Appendix I: Lesser Hippias. Alcibiades I. Menexenus. Appenddix II: Alcibiades II. Eryxias.--v. 3. Republic. Timaeus. Critias.--v. 4. Pharmenides. Theaetetus. Sophist. Statesman. Philebus.--v. 5 Laws. Index to the writings of Plato.

Philosophy & Public Affairs, Volume 50, Issue 2, Page 239-266, Spring 2022.

It is a consequence of the theory of imprecise credences that there exist situations in which rational agents inevitably become less opinionated toward some propositions as they gather more evidence. The fact that an agent's imprecise credal state can dilate in this way is often treated as a strike against the imprecise approach to inductive inference. Here, we show that dilation is not a mere artifact of this approach by demonstrating that opinion loss is countenanced as rational by a substantially (...) broader class of normative theories than has been previously recognised. Specifically, we show that dilation-like phenomena arise even when one abandons the basic assumption that agents have (precise or imprecise) credences of any kind, and follows directly from bedrock norms for rational comparative confidence judgements of the form `I am at least as confident in p as I am in q'. We then use the comparative confidence framework to develop a novel understanding of what exactly gives rise to dilation-like phenomena. By considering opinion loss in this more general setting, we are able to provide a novel assessment of the prospects for an account of inductive inference that is not saddled with the inevitability of rational opinion loss. (shrink)

This text is a translation of an article of B.L. Whorf “Language, mind and reality" (first published in 1941). The text was originally written for the journal Theosophist (India) during the last year of Whorf's life. The article contains a formulation of the principle of linguistic relativity that relates to the idea of that the world picture of a user of a language depends on the grammar of the language she is using. The article also contains a critique of the (...) Western science from Whorf's theosophist perspective. The paper was translated in Russian by Andrey A. Veretennikov. (shrink)

Volume 20, Issue 4, May 2020, Page 102-103.

Schupbach and Sprenger introduce a novel probabilistic approach to measuring the explanatory power that a given explanans exerts over a corresponding explanandum. Though we are sympathetic to their general approach, we argue that it does not adequately capture the way in which the causal explanatory power that c exerts on e varies with background knowledge. We then amend their approach so that it does capture this variance. Though our account of explanatory power is less ambitious than Schupbach and Sprenger’s in (...) the sense that it is limited to causal explanatory power, it is also more ambitious because we do not limit its domain to cases where c genuinely explains e. Instead, we claim that c causally explains e if and only if our account says that c explains e with some positive amount of causal explanatory power. 1Introduction 2The Logic of Explanatory Power 3Subjective and Nomic Distributions 3.1Actual degrees of belief 3.2The causal distribution 4Background Knowledge 4.1Conditionalization and colliders 4.2A helpful intervention 5Causal Explanatory Power 5.1The applicability of explanatory power 5.2Statistical relevance ≠ causal explanatory power 5.3Interventionist explanatory power 5.4E illustrated 6Conclusion. (shrink)

Volume 20, Issue 10, October 2020, Page 90-91.

While psychopathy research has been growing for decades, a relatively new area of research is corporate psychopathy. Corporate psychopaths are simply psychopaths working in organizational settings. They may be attracted to the financial, power, and status gains available in senior positions and can cause considerable damage within these roles from a manipulative interpersonal style to large-scale fraud. Based upon prior studies, we analyze psychopathy research pertaining to 23 moral emotions classified according to functional quality and target. Based upon our review, (...) we suggest that psychopaths are high in moral emotions associated with other-directed negative signals, low in self-directed negative signals, and low in other-directed positive signals. We found no empirical articles related to self-directed positive signals. This understanding of the specific moral emotion deficits of corporate psychopaths provides greater theoretical understanding and practical implications of knowing which individuals not to promote, though more research is needed on moral emotions that are faked for manipulative reasons. (shrink)

Schupbach and Sprenger introduce a novel probabilistic approach to measuring the explanatory power that a given explanans exerts over a corresponding explanandum. Though we are sympathetic to their general approach, we argue that it does not adequately capture the way in which the causal explanatory power that c exerts on e varies with background knowledge. We then amend their approach so that it does capture this variance. Though our account of explanatory power is less ambitious than Schupbach and Sprenger’s in (...) the sense that it is limited to causal explanatory power, it is also more ambitious because we do not limit its domain to cases where c genuinely explains e. Instead, we claim that c causally explains e if and only if our account says that c explains e with some positive amount of causal explanatory power. (shrink)

Objective Futile treatment, which by definition cannot benefit a patient, is undesirable. This research investigated why doctors believe that treatment that they consider to be futile is sometimes provided at the end of a patient9s life. Design Semistructured in-depth interviews. Setting Three large tertiary public hospitals in Brisbane, Australia. Participants 96 doctors from emergency, intensive care, palliative care, oncology, renal medicine, internal medicine, respiratory medicine, surgery, cardiology, geriatric medicine and medical administration departments. Participants were recruited using purposive maximum variation sampling. (...) Results Doctors attributed the provision of futile treatment to a wide range of inter-related factors. One was the characteristics of treating doctors, including their orientation towards curative treatment, discomfort or inexperience with death and dying, concerns about legal risk and poor communication skills. Second, the attributes of the patient and family, including their requests or demands for further treatment, prognostic uncertainty and lack of information about patient wishes. Third, there were hospital factors including a high degree of specialisation, the availability of routine tests and interventions, and organisational barriers to diverting a patient from a curative to a palliative pathway. Doctors nominated family or patient request and doctors being locked into a curative role as the _main_ reasons for futile care. Conclusions Doctors believe that a range of factors contribute to the provision of futile treatment. A combination of strategies is necessary to reduce futile treatment, including better training for doctors who treat patients at the end of life, educating the community about the limits of medicine and the need to plan for death and dying, and structural reform at the hospital level. (shrink)

Objectives To determine the role played by law in medical specialists9 decision-making about withholding and withdrawing life-sustaining treatment from adults who lack capacity, and the extent to which legal knowledge affects whether law is followed. Design Cross-sectional postal survey of medical specialists. Setting The two largest Australian states by population. Participants 649 medical specialists from seven specialties most likely to be involved in end-of-life decision-making in the acute setting. Main outcome measures Compliance with law and the impact of legal knowledge (...) on compliance. Results 649 medical specialists (of 2104 potential participants) completed the survey (response rate 31%). Responses to a hypothetical scenario found a potential low rate of legal compliance, 32% (95% CI 28% to 36%). Knowledge of the law and legal compliance were associated: within compliers, 86% (95% CI 83% to 91%) had specific knowledge of the relevant aspect of the law, compared with 60% (95% CI 55% to 65%) within non-compliers. However, the reasons medical specialists gave for making decisions did not vary according to legal knowledge. Conclusions Medical specialists prioritise patient-related clinical factors over law when confronted with a scenario where legal compliance is inconsistent with what they believe is clinically indicated. Although legally knowledgeable specialists were more likely to comply with the law, compliance in the scenario was not motivated by an intention to follow law. Ethical considerations (which are different from, but often align with, law) are suggested as a more important influence in clinical decision-making. More education and training of doctors is needed to demonstrate the role, relevance and utility of law in end-of-life care. (shrink)

We present a study of the linguistic output of the German-speaking writer Robert Walser using Natural Language Processing (NLP). We curated a corpus comprising texts written by Walser during periods of sound health, and writings from the year before his hospitalization, and writings from the first year of his stay in a psychiatric clinic, all likely attributed to schizophrenia. Within this corpus, we identified and analyzed a total of 20 linguistic markers encompassing established metrics for lexical diversity, semantic similarity, and (...) syntactic complexity. Additionally, we explored lesser-known markers such as lexical innovation, concreteness, and imageability. Notably, we introduced two additional markers for phonological similarity for the first time within this context. Our findings reveal significant temporal dynamics in these markers closely associated with Walser’s contemporaneous diagnosis of schizophrenia. Furthermore, we investigated the relationship between these markers, leveraging them for classification of the schizophrenic episode. (shrink)

According to some accounts of exploitation, most notably Ruth Sample’s degradation-based account and Robert Goodin’s vulnerability-based account, exploitation occurs when an advantaged party fails to constrain their advantage in light of another’s disadvantage, regardless of the cause of this disadvantage. Because the duty of constraint in these accounts does not depend on the cause of the disadvantage, the advantaged’s duty of constraint is what I call a ‘come-what-may’ duty. I show that come-what-may duties create moral hazards that can themselves be (...) exploited by the disadvantaged parties. In such cases these accounts of exploitation are either self-frustrating or over-demanding. (shrink)

The problem of deviant causation has been a serious obstacle for causal theories of action. We suggest that attending to the problem of deviant causation reveals two related problems for causal theories. First, it threatens the reductive ambitions of causal theories of intentional action. Second, it suggests that such a theory fails to account for how the agent herself is guided by her reasons. Focusing on the second of these, we argue that the problem of guidance turns out to be (...) related to a number of other issues in the literature on action explanation, and that it is much more general: it threatens not only causal theories but any theory of action. Finally, we suggest that a certain version of the view that acting has a constitutive or formal aim can overcome this problem. (shrink)

According to influential arguments from several branches of philosophy, there exist some gradable natural language expressions that violate the following principle: if x and y are both F to some degree, then either x is at least as F as y or y is at least as F as x. Dorr, Nebel and Zuehl (2022) (DNZ), who refer to this principle as ‘Comparability’, respond to these arguments and offer a systematic case in support of Comparability. In this paper, I respond (...) to DNZ and develop an opposing case against Comparability that (i) buttresses previous criticisms of the principle, (ii) identifies two new arguments against the principle, and (iii) rebuts DNZ’s prospective arguments in favour of the principle. (shrink)

Genetic testing for cancer susceptibility is an application of biotechnology that has the potential both to improve the psychosocial and physical wellbeing of the population and to cause significant psychosocia1 and physical harms. In spite of the uncertain value of genetic testing, it has captured the interest of biotechnology companies, researchers, health care providers, and the public. As more tests become feasible, pressure may increase to make the tests available and reimbursable. Both the benefits and harms of these tests lie (...) not as much in the tests themselves, as in their power to predict or alter the future. The value of the tests does not derive from the information per se, but from the ability to communicate effectively the information to patients and providers, and the behavioral responses of patients, providers, and others to this information. (shrink)

Empirical advances have been made in understanding how human language, in its combinatorial complexity and unbounded expressivity, may have evolved from the communication systems present in our evolutionary ancestors. However, a number of cognitive processes and neurobiological mechanisms that support language may not have evolved specifically for communication, but rather from abilities that support perception and cognition more generally. We review recent evidence from comparative behavioural and neurobiological studies on structured sequence learning in human and nonhuman primates. These studies support (...) the notion that certain sequence learning abilities are evolutionarily conserved and engage corresponding inferior frontal brain regions across the species, regions also involved in processing language in humans. Alongside the cross-species similarities is evidence for human specialisations, illuminating the likely evolutionary pathways towards language in modern humans. We argue that cognitive abilities that were in place for animals to learn combinatorial relationships in the sensory world were available and co-opted for language in humans. (shrink)

Sedlakova and Trachsel (2023) discuss the ethical concerns associated with employing what they term conversational artificial intelligence as therapist substitutes. Given their apprehensions, they...

Genetic testing for cancer susceptibility is an application of biotechnology that has the potential both to improve the psychosocial and physical wellbeing of the population and to cause significant psychosocia1 and physical harms. In spite of the uncertain value of genetic testing, it has captured the interest of biotechnology companies, researchers, health care providers, and the public. As more tests become feasible, pressure may increase to make the tests available and reimbursable. Both the benefits and harms of these tests lie (...) not as much in the tests themselves, as in their power to predict or alter the future. The value of the tests does not derive from the information per se, but from the ability to communicate effectively the information to patients and providers, and the behavioral responses of patients, providers, and others to this information. (shrink)

Gerade weil das Bestehen auf Rangordnungen in der heutigen Gesellschaft anstößig und fremd wirkt, ist es lohnenswert, sich ihnen mit Nietzsche neu zu stellen, der sie als sein Problem bezeichnete. Er richtet sie gezielt gegen die Gleichheit, von der er befürchtet, ihr Anspruch auf Universalität verunmögliche Individualität, Anders-Sein und damit auch alle Größe. Den moralischen Wert der Gleichheit kritisieren heißt nicht, sich von demokratischen Grundprinzipien oder Errungenschaften zu verabschieden. Geklärte Rangverhältnisse reduzieren Komplexität, vereinfachen die Kommunikation, machen Verhalten erwartbar und vereinfachen (...) so die Orientierung. So könnte gerade in den modernen Ausprägungen der Demokratie ein offenerer Umgang mit Rangordnungen zu ihrer Stärkung beitragen. Die Nietzsche-Forschung hat eine Beschäftigung mit dem Begriff bisher weitgehend vermieden. Alberts schließt diese Forschungslücke. Er geht persönlichen, philologischen und philosophischen Anhaltspunkten für Nietzsches Denken nach und untersucht die Perspektiven, die dabei auf verschiedenste Lebensbereiche wie Natur, Religion, Moral, Wissenschaft und Interindividualität eröffnet werden. (shrink)

Apology -- Crito -- Phaedo -- Symposium -- Republic.

Medical practice should evolve alongside medical ethics. As our understanding of the ethical implications of physician-patient interactions becomes more nuanced, physicians should integrate those lessons into practice. As early as the 1930s, epidemiological studies began to identify that the rates of medical procedures varied significantly along geographic and socioeconomic lines. Dr. J. Alison Glover recognized that tonsillectomy rates in school children in certain school districts in England and Wales were in some cases eight times the rates of children in other (...) districts, with the only significant predictive factors being the current chief medical officer in the area and the socioeconomic well-being of the child's parents. Unfortunately, Dr. Glover's work revealed that the increase in tonsillectomies did not improve the health of adolescent patients and appeared to be performed “as a routine prophylactic ritual for no particular reason and with no particular result.”. (shrink)

As a metaphysical theory, radical ontic structural realism is characterised mainly in terms of the ontological primacy it places on relations and structures, as opposed to the individual relata and objects that inhabit these relations/structures. The most popular criticism of ROSR is that its central thesis is incoherent. Bain attempts to address this criticism by arguing that the mathematical language of category theory allows for a coherent articulation of ROSR’s key thesis. Subsequently, Wüthrich and Lam and Lal and Teh have (...) criticised Bain’s arguments and claimed that category theory fares no better than set theory in coherently articulating the main ideas of ROSR. In this paper, we defend Bain’s main arguments against these critiques, and attempt to elaborate on the sense in which category theory can be seen as providing a coherent articulation of ROSR. We also consider the relationship between ROSR and Categorical Quantum Mechanics. (shrink)

Quantum set theory and topos quantum theory are two long running projects in the mathematical foundations of quantum mechanics that share a great deal of conceptual and technical affinity. Most pertinently, both approaches attempt to resolve some of the conceptual difficulties surrounding QM by reformulating parts of the theory inside of nonclassical mathematical universes, albeit with very different internal logics. We call such mathematical universes, together with those mathematical and logical structures within them that are pertinent to the physical interpretation, (...) ‘Q-worlds’. Here, we provide a unifying framework that allows us to better understand the relationship between different Q-worlds, and define a general method for transferring concepts and results between TQT and QST, thereby significantly increasing the expressive power of both approaches. Along the way, we develop a novel connection to paraconsistent logic and introduce a new class of structures that have significant implications for recent work on paraconsistent set theory. (shrink)

Duty and Healing positions ethical issues commonly encountered in clinical situations within Jewish law. The concept of duty is significant in exploring bioethical issues, and this book presents an authentic and non-parochial Jewish approach to bioethics, while it includes critiques of both current secular and Jewish literatures. Among the issues the book explores are the role of family in medical decision-making, the question of informed consent as a personal religious duty, and the responsibilities of caretakers. The exploration of contemporary ethical (...) problems in healthcare through the lens of traditional sources in Jewish law is an indispensable guide of moral knowledge. (shrink)

Covering the theories of, among others, Derrida, Lefort and Laclau, this volume opens up space to the political (polemicisation). Chapters cover themes such as social structure, ethical arguments, and political organisation.

This is the first book devoted to a highly significant doctrine in the history of philosophy and science--Aristotle's account of place in the Physics. Morison presents an authoritative analysis and defense of this account of what it is for something to be somewhere, and demonstrates its enduring philosophical interest and value.

This paper considers states on the Weyl algebra of the canonical commutation relations over the phase space R^{2n}. We show that a state is regular iff its classical limit is a countably additive Borel probability measure on R^{2n}. It follows that one can "reduce" the state space of the Weyl algebra by altering the collection of quantum mechanical observables so that all states are ones whose classical limit is physical.

In the epistemology of self-knowledge, Inferentialism is the view that one’s current mental states are normally known to one through inferences from evidence. This view is often taken to conflict with widespread claims about normally-acquired self-knowledge, namely that it is privileged (essentially more secure than knowledge of others’ minds) and peculiar (obtained in a way that fundamentally differs from how others know your mind). In this paper I argue that Inferentialism can be reconceived so as to no longer conflict with (...) these claims. On a positive framing, Inferentialism earns a seat at the table alongside other theories of self-knowledge that take its potentially privileged and peculiar status seriously. On a less positive framing, Inferentialism’s plausibility now hinges on the plausibility of viewing self-knowledge as at least peculiar, and perhaps as privileged as well. (shrink)

Belief has a special connection to truth, a connection not shared by mental states like imagination. One way of capturing this connection is by the claim that belief aims at truth. Normativists argue that we should understand this claim as a normative claim about belief – beliefs ought to be true. A second important connection between belief and truth is revealed by the transparency of belief, i.e. the fact that, when I deliberate about what to believe, I can settle this (...) deliberation only by appeal to considerations I take to show p to be true. It is natural to think that there is a connection between these two features of belief, that the fact that believing for non-evidential considerations would be irrational can help to explain why it is impossible, and Shah and Velleman make exactly this argument. However, as I shall argue, we cannot explain transparency on the basis of a normative requirement on belief. For this explanation to work non-evidential considerations would have to fail to be reasons for belief, and we would have to be able to explain why we are unable to form beliefs on the basis of non-evidential considerations by appealing to the fact that they fail to be reasons for belief. However, while it is plausible that non-evidential considerations are not in fact reasons for belief, the explanatory picture is the other way around. Such considerations only fail to be reasons for belief because we are unable to form beliefs on their basis. (shrink)

In this article, I tackle a heretofore unnoticed difficulty with the application of Pyrrhonian scepticism to science. Sceptics can suspend belief regarding a dogmatic proposition only by setting up opposing arguments for and against that proposition. Since Sextus provides arguments exclusively against particular geometrical definitions in Adversus Mathematicos III, commentators have argued that Sextus’ method is not scepticism, but negative dogmatism. However, commentators have overlooked the fact that arguments in favour of particular geometrical definitions were absent in ancient geometry, and (...) hence unavailable to Sextus. While this might explain why they are also absent from Sextus’ text, I survey and evaluate various strategies to supply arguments in support of particular geometrical definitions. (shrink)