A body-based healing model that interrogates what we've been taught about unfair hierarchies of the body-and pushes back against the white supremacy, colonialism, patriarchy, and capitalism embedded in modern embodiment practices.

This note addresses the issue as to which ceers can be realized by word problems of computably enumerable (or, simply, c.e.) structures (such as c.e. semigroups, groups, and rings), where being realized means to fall in the same reducibility degree (under the notion of reducibility for equivalence relations usually called “computable reducibility”), or in the same isomorphism type (with the isomorphism induced by a computable function), or in the same strong isomorphism type (with the isomorphism induced by a computable permutation (...) of the natural numbers). We observe, e.g., that every ceer is isomorphic to the word problem of some c.e. semigroup, but (answering a question of Gao and Gerdes) not every ceer is in the same reducibility degree of the word problem of some finitely presented semigroup, nor is it in the same reducibility degree of some non‐periodic semigroup. We also show that the ceer provided by provable equivalence of Peano Arithmetic is in the same strong isomorphism type as the word problem of some non‐commutative and non‐Boolean c.e. ring. (shrink)

We make some beginning observations about the category Eq of equivalence relations on the set of natural numbers, where a morphism between two equivalence relations R and S is a mapping from the set of R-equivalence classes to that of S-equivalence classes, which is induced by a computable function. We also consider some full subcategories of Eq, such as the category Eq(Σ01) of computably enumerable equivalence relations (called ceers), the category Eq(Π01) of co-computably enumerable equivalence relations, and the category Eq(Dark*) (...) whose objects are the so-called dark ceers plus the ceers with finitely many equivalence classes. Although in all these categories the monomorphisms coincide with the injective morphisms, we show that in Eq(Σ01) the epimorphisms coincide with the onto morphisms, but in Eq(Π01) there are epimorphisms that are not onto. Moreover, Eq, Eq(Σ01), and Eq(Dark*) are closed under finite products, binary coproducts, and coequalizers, but we give an example of two morphisms in Eq(Π01) whose coequalizer in Eq is not an object of Eq(Π01). (shrink)

Introduction: Screen-based and mobile technology has grown at an unprecedented rate. However, little is understood about whether increased screen-use affects executive functioning, the range of mental processes that aid goal attainment and facilitate the selection of appropriate behaviors. To examine this, a systematic review was conducted.Method: This systematic review is reported in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement. A comprehensive literature search was conducted using Web of Science, MEDLINE, PsycINFO and Scopus databases to identify (...) articles published between 2007 and March 2020, examining the use of mobile technologies on aspects of EF in healthy adults aged 18–35 years. In total 6079 articles were screened by title, and 39 screened by full text. Eight eligible papers were identified for inclusion. Our methods were pre-registered on the PROSPERO international prospective register of systematic reviews.Results: A total of 438 participants were included across the eight studies. Five of the eight studies examined more than one EF. Five studies measured inhibition, and four studies measured decision-making. Smartphone use was negatively associated with inhibition and decision-making. Working memory performance was found to be improved by increased time engaging in video games and by refraining from smartphone use prior to bedtime. Quality assessments indicated high risk of methodological biases across the studies and a low quality of evidence for determining the relationship between technology use and executive functioning.Conclusions: This review highlights the scarcity of the literature in this area. It presents a call for rigorous and objective research to further our understanding of the impact of mobile technology on different aspects of executive function. (shrink)

BackgroundThere has been media coverage surrounding the dangers of heavy drinking and benefits of moderation, with TV and radio presenter, Adrian Chiles, documenting his experience of moderating alcohol consumption in an online article for the Guardian. By analysing the comments in response to Chiles’ article, this study aimed to explore posters’ attitudes or beliefs toward moderating alcohol and posters’ experiences of moderating or abstaining from alcohol.MethodA secondary qualitative analysis of online comments in response to an article about moderating alcohol consumption. (...) Main outcome measures: Comments in response to a United Kingdom online news article about moderating alcohol consumption were extracted and inductive thematic analysis was used.ResultsFor aim one, two themes were developed; “general attitudes toward drinking” and “general attitudes toward reducing consumption”. These themes reflect negative perceptions of alcohol and issues around changing attitudes. For aim two, three themes were developed: “moderation vs. abstention”, “reflection on past drinking behaviours”, and “current drinking behaviours”. These themes represent posters’ experiences and implications changing their drinking habits.ConclusionOur analysis provides a novel insight into perceptions and experiences of moderating or abstaining from alcohol. Alcohol is embedded within United Kingdom culture, creating difficulties for those who choose to moderate or abstain from alcohol. Our analysis highlights the need for public health to focus on shifting the current drinking culture, through clearer drinking guidelines and a wider availability of alcohol-free alternatives. (shrink)

The potential to instrumentalize drug use based upon the detection of very many different drug states undoubtedly exists, and such states may play a role in psychiatric and many other drug uses. Nevertheless, nonaddictive drug use is potentially more parsimoniously explained in terms of sensation seeking/impulsivity and drug expectations. Cultural factors also play a major role in nonaddictive drug use.

At the beginning of his message for World Mission Sunday 2019 Pope Francis wrote: For the month of October 2019, I have asked that the whole Church revive her missionary awareness and commitment as we commemorate the centenary of the Apostolic Letter Maximum Illud of Pope Benedict XV. Its farsighted and prophetic vision of the apostolate has made me realize once again the importance of renewing the Church's missionary commitment and giving fresh evangelical impulse to her work of preaching and (...) bringing to the world the salvation of Jesus Christ, who died and rose again. (shrink)

Over 20 years ago the Programme Director of Greenpeace UK identified the primary challenge facing the modern environmental movement as that of moving beyond the “struggle for proof” to generating effective environmental action. There is a mass of widely-accepted evidence to support environmentalist claims, but effective environmental action is rare, both at governmental and at grass-roots levels. Arguably, the malaise is less a political one than an ontological one. We “know” that environmental problems are “real”, but we fail to grasp (...) them as happening here, to us. It is as if they unfolded in a “media-only reality” (Rose, 1993). This ontological malaise can be understood along Heideggerian lines as a form of world-alienation. Alienation is often understood, following Marx, as estrangement from our true human nature, consequent on interpreting ourselves as mere resources. On Heidegger’s view, however, self and world are inextricably linked. Conscious beings are not trapped inside their own heads, never to bridge the gap to the world outside. Rather, consciousness just is the intentional reaching out to things. Heidegger’s view of the self-world relation implies a modified concept of alienation. Our alienated condition stems as much from interpreting the world around us as a mere resource as it does from interpreting ourselves as mere resources. We may understand the natural systems on which our lives depend in far more detail than our grandparents did; but where those systems are understood as brute agglomerations of objects the resulting knowledge is alienated and alienating. Our very “theory of the real” serves to make the earth unreal for us. This, I argue, is the true import of Heidegger’s concern with the world “conceived and grasped as picture”. It also illuminates his remark in the 1966 Der Spiegel interview: “It is no longer upon an Earth that man lives today.”. (shrink)

I consider the question of what moral obligations prospective parents owe to their future children. It is taken as an almost axiomatic premise of a wide range of philosophical arguments that prospective parents have a moral obligation to take such steps as ensuring their own financial stability or waiting until they are emotionally mature before conceiving. This is because it is assumed that parents have a moral obligation to lay the groundwork for their children's lives to go well. While at (...) first glance such a premise seems benign, I will argue that when it is applied to arguments in assisted reproductive technology, as it is in Julian Savulescu's procreative beneficence argument or as it is in Daniel Groll's recent argument for open gamete donation, we see problems with this premise. Problems in Groll's argument also become apparent when it is scrutinized in connection with this premise. (shrink)

Background Human brain organoids are a valuable research tool for studying brain development, physiology, and pathology. Yet, a host of potential ethical concerns are inherent in their creation. There is a growing group of bioethicists who acknowledge the moral imperative to develop brain organoid technologies and call for caution in this research. Although a relatively new technology, brain organoids and their uses are already being discussed in media literature. Media literature informs the public and policymakers but has the potential for (...) utopian or dystopian distortions. Thus, it is important to understand how this technology is portrayed to the public. Methods To investigate how brain organoids are displayed to the public, we conducted a systematic review of media literature indexed in the Nexis Uni database from 2013–2019. News and media source articles passing exclusion criteria (_n_ = 93) were scored to evaluate tone and relevant themes. Themes were validated with a pilot sample before being applied to the dataset. Thematic analysis assessed article tone, reported potential for the technology, and the scientific, social, and ethical contexts surrounding brain organoids research. Results Brain organoid publications became more frequent from 2013 to 2019. We observed increases in positively and negatively toned articles, suggesting growing polarization. While many sources discuss realistic applications of brain organoids, others suggest treatment and cures beyond the scope of the current technology. This could work to overhype the technology and disillusion patients and families by offering false hope. In the ethical narrative we observe a preoccupation with issues such as development of artificial consciousness and “humanization” of organoid-animal chimeras. Issues of regulation, ownership, and accuracy of the organoid models are rarely discussed. Conclusions Given the power that media have to inform or misinform the public, it is important this literature provides an accurate and balanced reflection of the therapeutic potential and associated ethical issues regarding brain organoid research. Our study suggests increasing polarization, coupled with misplaced and unfounded ethical concern. Given the inhibitory effects of public fear or disillusion on research funding, it is important media literature provides an accurate reflection of brain organoids. (shrink)

Early research suggested that migration changed gender roles by offering women new wages and exposing them to norms of gender equity. Increasingly, however, scholars have drawn attention to the role of structural factors, such as poverty and undocumented status, in mediating the relationship between migration and gender. This article takes such insights a step further by showing that migrant communities’ reactions to structural marginality—and their efforts to build alternatives in their home villages—may also draw women into new gender roles. I (...) demonstrate this mechanism through the case of San Miguel, a Mixtec sending community in Southern Mexico where, in the context of U.S. migration, once-excluded women came to predominate in civic affairs. In response to harsh conditions in the United States, migrants from San Miguel returned to their village. To make this economically feasible, they sought state development resources. Men, who often stayed in the United States as breadwinners, relied on sympathetic women back in the sending community to advocate on their behalf. Meanwhile, women’s own rejection of migrant life gave them new interest in sustaining their village. For both, incorporating women into politics offered a strategy to secure needed resources and avoid assimilating into an undocumented underclass. (shrink)

Good decision-making requires reliable information. In medicine, relevant information comes from clinical trials and other forms of scientific research. In business, one source is in corporate annual financial statements. As for-profit, publicly traded companies whose business is discovering, manufacturing, and marketing drugs, pharmaceutical companies sit at the nexus of these two fields. Determining the safety and efficacy of a pharmaceutical product and determining the profitability of a complex enterprise are similarly difficult tasks: each is fraught with deeply ambiguous information that (...) requires sophisticated judgment to interpret reasonably. (shrink)

The problem of the manipulation of data that arises when there is both opportunity and incentive to mislead is better accepted and studied — though by no means solved — in financial accounting than in medicine. This article analyzes pharmaceutical company manipulation of medical research as part of a broader problem of corporate manipulation of data in the creation of accounting profits. The article explores how our understanding of accounting fraud and misinformation helps us understand the risk of similar information (...) manipulation in the medical sciences. This understanding provides a framework for considering how best to improve the quality of medical research and analysis in light of the current system of medical information production. I offer three possible responses: (1) use of the Dodd-Frank whistleblower provisions to encourage reporting of medical research fraud; (2) a two-step academic journal review process for clinical trials; and (3) publicly subsidized trial-failure insurance. These would improve the release of negative information about drugs, thereby increasing the reliability of positive information. (shrink)

Phenomenologically speaking, we perceive the present, recall the past, and anticipate the future. We offer an account of the temporal content of the perceptual present that distinguishes it from the recalled past and the anticipated future. We distinguish two views: the Token Reflexive Account and the Minimal Account. We offer reasons to reject the Token Reflexive Account, and defend the Minimal Account, according to which the temporal content of the perceptual present is exhausted by its direct reference to the interval (...) of time over which it occurs. (shrink)

La Nota Roja en México es una manifestación periodística bien consolidada en la cultura en México, cada año se venden miles de ejemplares en los lugares más cotidianos de esta sociedad. Así pues, este trabajo tiene como objetivo principal presentar un debate que resulta fundamental para la teoría de los modelos de mundo: la necesidad de “reconstrucción del contexto” que nace de la discusión que se plantea en Crítica y sabotaje con los planteamientos derridianos (Firma acontecimiento contexto. La Diseminación) y (...) que se trabajarán a propósito del periodismo. (shrink)

The notion of survivance is central to Derrida’s later thinking. Much of that thinking, for example in addressing the non–human in The Animal That Therefore I Am and The Beast and the Sovereign, is more precisely a thinking of the human in relation to the animal. Taking inspiration from the recent turn towards biodeconstruction, this essay works through the implications of survivance beyond the human-animal by considering the synergy between biological and textual survivance. And in so doing, this essay outlines (...) a new way of conceptualizing the living self as a composite form made up of many non-human and even textual others. (shrink)

This paper explores the wartime creation of veterinary expertise in cattle breeding, and its contribution to the transition between two very different types of agriculture. During the interwar period, falling prices and steep competition from imports caused farmers to adopt a ‘low input, low output’ approach. To cut costs, they usually butchered, marketed or doctored diseased cows in preference to seeking veterinary aid. World War II forced a greater dependence on domestic food production, and inspired wide-ranging state-directed attempts to increase (...) agricultural output. However, the weak connection between veterinary services and livestock productivity meant that the drive for greater milk yields did not automatically translate into a demand for improved veterinary health care. Rather veterinary expertise had to be actively created and made relevant to the new context. Leaders of the profession secured this goal through establishing a government-backed ‘scheme for the control of certain diseases of dairy cows’. Drawing on pre-existing but rarely applied reproductive technologies, the scheme provided the opportunities and education necessary for more extensive veterinary interventions in cattle breeding. I show how its operation transformed understandings of fertility, raised veterinarians to the status of experts, won them the patronage of farmers and the state, and facilitated the shift to a productivity-oriented agriculture. (shrink)

This paper argues that most conceptualizations of citizenship limit the purview of the discourse to static categories. ‘Citizenship’ is commonly seen as an ideal type, presuming a largely legal relationship between an inidividual and a single nation-state – more precisely only one type of nation-state, the advanced capitalist post-war model. Alternatively, we suggest a re-conceptualization of citizenship as a negotiated relationship, one which is subject therefore to change, and acted upon collectively within social, political and economic relations of conflict. This (...) dynamic process of negotiation takes place within a context which is shaped by gendered, racial and class structures and ideologies; it also involves international hierarchies among states. Citizenship is therefore negotiated on global as well as national levels. This conceptualization is demonstrated by way of identifying one particular set of experiences of negotiated citizenship, involving foreign domestic workers in Canada. As non-citizens originating from Third World conditions, this is a case involving women of colour workers, highly prone to abusive conditions, and under the direction of employers who are more affluent First World citizens and predominantly white women. Original survey data based on interviews with Caribbean and Filipino domestic workers in Canada are used to demonstrate the varied, creative and effective strategies of two distinctive groups of non-citizens as they attempt to negotiate citizenship rights in restrictive national and international conditions. (shrink)

Translation of Aristotle's Posterior Analytics I into Portuguese, with a few notes, experimental glossary and introduction. The translation, which was made at 2003/4, was preliminary and its publication was intended to provide a didactic tool for courses as well as a provisional resource in research seminars. It needs some revision. I am currently working (slowly...) on the revision of the translation and a new revised one will surely appear at some point.

In Posterior Analytics 71b9 12, we find Aristotle’s definition of scientific knowledge. The definiens is taken to have only two informative parts: scientific knowledge must be knowledge of the cause and its object must be necessary. However, there is also a contrast between the definiendum and a sophistic way of knowing, which is marked by the expression “kata sumbebekos”. Not much attention has been paid to this contrast. In this paper, I discuss Aristotle’s definition paying due attention to this contrast (...) and to the way it interacts with the two conditions presented in the definiens. I claim that the “necessity” condition ammounts to explanatory appropriateness of the cause. (shrink)

ABSTRACT Psychological or political criticism of the parent‐child relation presupposes a normative account of that relation. Such an account is here provided. The normative account can shed most light when the parent‐child relation is presented recognizably, not in Utopian disguise. The purposes of reasonable people partly depend on their interpretations of those of their parents. This is so whether such people accept or reject any particular parental purposes. The filial art sticks to the project of working out the enacted interpretation—until (...) it gets it approximately right. There is a corresponding parental art, neither compensatory nor sacrificial. (shrink)

Establishing healthy dietary habits in childhood is crucial in preventing long-term repercussions, as a lack of dietary variety in childhood leads to enduring impacts on both physical and cognitive health. Poor conceptual knowledge about food has recently been shown to be a driving factor of food rejection. The majority of studies that have investigated the development of food knowledge along with food rejection have mainly focused on one subtype of conceptual knowledge about food, namely taxonomic categories. However, taxonomic categorization is (...) not the only way to understand the food domain. We also heavily rely on other conceptual structures, namely thematic associations, in which objects are grouped because they share spatial-temporal properties or exhibit a complementary relationship. We rely on such thematic associations between food items, which may not fall into the same taxon, to determine the acceptability of food combinations. However, the development of children's ability to master these relations has not been systematically investigated, nor alongside the phenomenon of food rejection. The present research aims to fill this gap by investigating the development of conceptual food knowledge and the putative relationship between children's food rejection and both thematic and taxonomic food knowledge. A proportional analogy task, with a choice between taxonomic and thematic food associates, was conducted on children between 3 and 7-years-old. The children were systematically presented with either a thematic or taxonomic food base pair and then asked to extend the example type of relation to select the respective thematic or taxonomic match to the target. Our results revealed, for the first time, that increased levels of food rejection were significantly predictive of poorer food identification and decreased thematic understanding. These findings entitle us to hypothesize that knowledge-based food education programs to foster dietary variety in young children, should not only aim to improve taxonomic understanding of food, but also thematic relations. (shrink)

Empathy is a construct that is notoriously difficult to define. Murphy and colleagues argue for leaning into the construct's inherent fuzziness and reverting to what they term a classical definition informed by the observations of philosophers and clinicians: as a dynamic, “unfolding process of imaginatively experiencing the subjective consciousness of another person, sensing, understanding, and structuring the world as if one were that person.” Although consistent with some historical conceptualizations, this definition risks incorporating so many processes it would make empathy (...) difficult to operationalize or distinguish from any generally socially sensitive interaction. Defining empathy instead as the attempted representation, or simulation, of another's subjective internal experiences would increase its clarity and empirical utility. (shrink)

Empathy is a construct that is notoriously difficult to define. Murphy and colleagues argue for leaning into the construct's inherent fuzziness and reverting to what they term a classical definition informed by the observations of philosophers and clinicians: as a dynamic, “unfolding process of imaginatively experiencing the subjective consciousness of another person, sensing, understanding, and structuring the world as if one were that person.” Although consistent with some historical conceptualizations, this definition risks incorporating so many processes it would make empathy (...) difficult to operationalize or distinguish from any generally socially sensitive interaction. Defining empathy instead as the attempted representation, or simulation, of another's subjective internal experiences would increase its clarity and empirical utility. (shrink)

In this paper, we develop an impure somatic theory of emotion, according to which emotions are constituted by the integration of bodily perceptions with representations of external objects, events, or states of affairs. We put forward our theory by contrasting it with Prinz's pure somatic theory, according to which emotions are entirely constituted by bodily perceptions. After illustrating Prinz's theory and discussing the evidence in its favor, we show that it is beset by serious problems—i.e., it gets the neural correlates (...) of emotion wrong, it isn't able to distinguish emotions from bodily perceptions that aren't emotions, it cannot account for emotions being directed towards particular objects, and it mischaracterizes emotion phenomenology. We argue that our theory accounts for the empirical evidence considered by Prinz and solves the problems faced by his theory. In particular, we maintain that our theory gives a unified and principled account of the relation between emotions and bodily perceptions, the intentionality of emotions, and emotion phenomenology. (shrink)

This article examines the limitations associated with Irigaray’s concept of a culture of difference. I suggest that her concept of sexual difference depends upon a conservative fiction of sameness. I argue that a fiction of phallic sameness underpins her evangelical championing of difference, and that such a fiction retains a conservative blindness to the complexities of contemporary social relations and erases the positive effects oppositional discourses have had on the culture of modernity. I question the debt Irigaray disavows to other (...) non-difference feminism, her insistence that woman are radically marginalized and suggest that her culture of difference is prescriptive and normative. Egalitarian feminism, understood as a postmodern project, is far more strategic, insofar as it offers a multiply-situated analysis of the relationship between women and power within modernity. I replace Irigaray’s negative image of the egalitarian feminist as an unnatural woman with the figure of the cyborg who embraces ontological impurity and strategically works within culture. (shrink)

I discuss what Aristotle means when he say that scientific demonstration must proceed from necessary principles. I argue that, for Aristotle, scientific demonstration should not be reduced to sound deduction with necessary premises. Scientific demonstration ultimately depends on the fully appropriate explanatory factor for a given explanandum. This explanatory factor is what makes the explanandum what it is. Consequently, this factor is also unique. When Aristotle says that demonstration must proceed from necessary principles, he means that each demonstration requires the (...) principle that is the necessary one for the fully appropriate explanation of its explanandum. This picture also provides a key to understand Aristotle's thesis that scientific explanation depends on essences: it is the essence of the attribute to be explained that should be stated as the fully appropriate explanatory factor. (shrink)

Many models of motivation suggest that goals can be arranged in a hierarchy, ranging from higher-level goals that represent desired end-states to lower-level means that operate in the service of those goals. We present a hierarchical model that distinguishes between three levels—goals, strategies, and tactics—and between approach/avoidance and regulatory focus motivations at different levels. We focus our discussion on how this hierarchical framework sheds light on the different ways that success and failure are defined within the promotion and prevention systems (...) outlined in regulatory focus theory. Specifically, we review research that demonstrates that differences in what “counts” as success versus failure in these systems have important implications for motivational strength, emotional responses, and risky behavior. (shrink)

With no statutory definition of death, the accepted medical definition relies on brain stem death criteria as a definitive measure of diagnosing death. However, the use of brain stem death criteria in this way is precarious and causes widespread confusion amongst both medical and lay communities. Through critical analysis, this paper considers the insufficiencies of brain stem death. It concludes that brain stem death cannot be successfully equated with either biological death or the loss of integrated bodily function. The overemphasis (...) of the brain-stem and its consequences leaves the criteria open to significant philosophical critique. Further, in some circumstances, the use of brain stem death criteria causes substantial emotional conflict for families and relatives. Accordingly, a more holistic and comprehensive definition of death is required. (shrink)

Experiences like pains, pleasures, and emotions have affective phenomenal character: they feel pleasant or unpleasant. Imperativism proposes to explain affective phenomenal character by appeal to imperative content, a kind of intentional content that directs rather than describes. We argue that imperativism is on the right track, but has been developed in the wrong way. There are two varieties of imperativism on the market: first-order and higher-order. We show that neither is successful, and offer in their place a new theory: reflexive (...) imperativism. Our proposal is that an experience P feels pleasant in virtue of being constituted by a Command with reflexive imperative content, while an experience U feels unpleasant in virtue of being constituted by a Command with reflexive imperative content : More of P!Less of U! If you need a slogan: experiences have affective phenomenal character in virtue of commanding us Get more of me! Get less of me! (shrink)

Seasonal influenza poses a significant public health risk in many countries worldwide. Lower immunity and less influenza virus circulating during the pandemic has resulted in a significant increase in cases since the lifting of COVID-19 restrictions in 2022. The seasonal influenza vaccine offers effective protection and is safe for use in large numbers of the population. This article asserts that a moral obligation to vaccinate against influenza can be understood as an Institutional Duty of Rescue. The traditional understanding of the (...) Duty of Rescue encounters issues with force and scope, making it difficult to apply to rescue cases in general, as well as being overdemanding for the individual agent. An Institutional view of the Duty of Rescue addresses these difficulties, looks at the wider context of rescue and leaves room for discussion on collective, preventative rescue measures. This makes the concept well suited to supporting a moral obligation to vaccinate against influenza as part of a collective effort on the part of institutional organisations. (shrink)

Analyzing geometric properties of high-dimensional loss functions, such as local curvature and the existence of other optima around a certain point in loss space, can help provide a better understanding of the interplay between neural network structure, implementation attributes, and learning performance. In this work, we combine concepts from high-dimensional probability and differential geometry to study how curvature properties in lower-dimensional loss representations depend on those in the original loss space. We show that saddle points in the original space are (...) rarely correctly identified as such in expected lower-dimensional representations if random projections are used. The principal curvature in the expected lower-dimensional representation is proportional to the mean curvature in the original loss space. Hence, the mean curvature in the original loss space determines if saddle points appear, on average, as either minima, maxima, or almost flat regions. We use the connection between expected curvature in random projections and mean curvature in the original space (i.e., the normalized Hessian trace) to compute Hutchinson-type trace estimates without calculating Hessian-vector products as in the original Hutchinson method. Because random projections are not suitable to correctly identify saddle information, we propose to study projections along dominant Hessian directions that are associated with the largest and smallest principal curvatures. We connect our findings to the ongoing debate on loss landscape flatness and generalizability. Finally, for different common image classifiers and a function approximator, we show and compare random and Hessian projections of loss landscapes with up to about 7×10^6 parameters. (shrink)

Aristotle contrasts episteme and doxa through the key notions of universal and necessary. These notions have played a central role in Aristotle’s characterization of scientific knowledge in the previous chapters of APo. They are not spelled out in APo I.33, but work as a sort of reminder that packs an adequate characterization of scientific knowledge and thereby gives a highly specified context for Aristotle’s contrast between episteme and doxa. I will try to show that this context introduces a contrast in (...) terms of explanatory claims: on the one hand, episteme covers those claims which capture explanatory connections that are universal and necessary and thereby deliver scientific understanding; on the other hand, doxa covers the explanatory attempts that fail at doing so. (shrink)

In this paper I explore the way that mental illness stigma impacts epistemic credibility in people who have mental illness. While any kind of stigma has the potential to discredit a person’s epistemic agency, in the case of mental illness the basis for discrediting is in some cases and to some extent justifiable, for impairments in rationality, control, and reality perception can indeed be obstacles to participating appropriately in epistemic activities such as normal conversation and public discourse. People with mental (...) illness are still potentially subject to epistemic injustices, however, especially when we rely on stereotypes and fail to make complicated and nuanced judgments which are more accurate. In this paper, I explain some of the ways that people with mental illness may be subject to epistemic injustices, and I propose some suggestions for how epistemic injustice can be avoided. (shrink)

I examine Aristotle’s definition of scientific knowledge in Posterior Analytics 71b 9-12 and try to understand how it relates to the sophistical way of knowing and to "kata sumbebekos knowledge". I claim that scientific knowledge of p requires knowing p by its appropriate cause, and that this appropriate cause is a universal (katholou) in the restricted sense Aristotle proposes in 73b 26-27 ff., i.e., an attribute coextensive with the subject (an extensional feature) and predicated of the subject in itself (an (...) intensional feature). Kata sumbebekos knowledge, on the other hand, can occur even when the predicate of a conclusion is coextensive with its subject and is proved by a convertible meson which is not the most appropriate from an explanatory standpoint. (shrink)