From large cardinals we obtain the consistency of the existence of a singular cardinal κ of cofinality ω at which the Singular Cardinals Hypothesis fails, there is a bad scale at κ and κ ++ has the tree property. In particular this model has no special κ +-trees.

We prove various theorems about the preservation and destruction of the tree property at ω2. Working in a model of Mitchell [9] where the tree property holds at ω2, we prove that ω2 still has the tree property after ccc forcing of size \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\aleph_1}$$\end{document} or adding an arbitrary number of Cohen reals. We show that there is a relatively mild forcing in this same model which destroys the tree property. Finally we (...) prove from a supercompact cardinal that the tree property at ω2 can be indestructible under ω2-directed closed forcing. (shrink)

We present a new technique for changing the cofinality of large cardinals using homogeneous forcing. As an application we show that many singular cardinals in [Formula: see text] can be measurable in HOD. We also answer a related question of Cummings, Friedman and Golshani by producing a model in which every regular uncountable cardinal [Formula: see text] in [Formula: see text] is [Formula: see text]-supercompact in HOD.

We improve the upper bound for the consistency strength of stationary reflection at successors of singular cardinals.

We show that it is consistent, relative to ω many supercompact cardinals, that the super tree property holds at for all but there are weak square and a very good scale at.

We construct a model in which the singular cardinal hypothesis fails at ℵωℵω. We use characterizations of genericity to show the existence of a projection between different Prikry type forcings.

In this paper we prove that from large cardinals it is consistent that there is a singular strong limit cardinal $\nu $ such that the singular cardinal hypothesis fails at $\nu $ and every collection of fewer than $\operatorname {\mathrm {cf}}(\nu )$ stationary subsets of $\nu ^{+}$ reflects simultaneously. For $\operatorname {\mathrm {cf}}(\nu )> \omega $, this situation was not previously known to be consistent. Using different methods, we reduce the upper bound on the consistency strength of this situation for (...) $\operatorname {\mathrm {cf}}(\nu ) = \omega $ to below a single partially supercompact cardinal. The previous upper bound of infinitely many supercompact cardinals was due to Sharon. (shrink)

Motivated by the goal of constructing a model in which there are no κ-Aronszajn trees for any regular $k>\aleph_1$, we produce a model with many singular cardinals where both the singular cardinals hypothesis and weak square fail.

We present an alternative proof that from large cardinals, we can force the tree property at $\kappa ^+$ and $\kappa ^{++}$ simultaneously for a singular strong limit cardinal $\kappa $. The advantage of our method is that the proof of the tree property at the double successor is simpler than in the existing literature. This new approach also works to establish the result for $\kappa =\aleph _{\omega ^2}$.

Blurb & Contents Readings from Physics Today With over 300 photographs and illustrations, this volume is a valuable library reference, a useful supplementary text for a wide range of courses, and stimulating leisure reading for physicists and non- physicists alike.

In this quite modestly ambitious essay, I'll generally just assume that, for the most part, our "scientifically informed" commonsense view of the world is true. Just as it is with such unthinking things as planets, plates and, I suppose, plants, too, so it also is with all earthly thinking beings, from people to pigs and pigeons; each occupies a region of space, however large or small, in which all are spatially related to each other. Or, at least, so it is (...) with the bodies of these beings. And, even as each of these ordinary entities extends through some space, so, also, each endures through some time. In line with that, each ordinary entity is at least very largely, and is perhaps entirely, an enduring physical entity (which allows that many might have certain properties that aren't purely physical properties.) Further, each ordinary enduring entity is a physically complex entity: Not only is each composed of parts, but many of these parts, whether or not absolutely all of them, are themselves enduring physical entities, and many of them also are such physically complex continuing entities. When an ordinary entity undergoes a significant change, then, at least generally, this change will involve changes concerning that entity's constituting physical parts, whether it be a rearrangement of (some of) these parts, or a loss of parts, or a gain of parts, or whatever. Often, the entity will still exist even after the change occurs. As we may well suppose, this happens when, from two strokes of an ax, an ordinary log loses just a chip of wood. As we may then say, such a change conforms with the log's "persistence conditions." Somewhat less often, such an ordinary entity undergoes a change that means an end to it: When a bomb's explosion makes our log become just so many widely scattered motes of dust, the log will no longer exist. Such a momentous change doesn't conform with the log's persistence conditions. (shrink)

Ethnicity and im/migrant classification systems and their constituent categories have a long history in the construction of public health knowledge on tuberculosis in the United Kingdom. This article critically examines the categories employed and the epidemiological discourses on TB, im/migrants, and ethnic minorities in health reporting between 1965 and 2015. We employ a Sociology of Knowledge Approach to Discourse Analysis to trace the continuities and changes in the categories used and in the discursive construction of im/migrants, ethnic minorities, and TB. (...) These continuities and disjunctures are analysed within their socio-historical context to demonstrate the historical contingency of epidemiological knowledge production. We outline two historical phases in knowledge construction. The first coincides with the period of decolonisation, which witnessed a change in discursive identity ascriptions from ‘immigrants’ to ‘ethnic groups’ in health reporting as the ‘other’. The second commenced after 1991, when the adoption of the census ethnicity categories as a standard in the collection of population statistics entrenched ethnicity categories in health reporting. We argue the health reporting discourse reveals that the ‘new’ public health exhibits continuities with the ‘old’ by targeting the immigrant ‘other’ through biosecuritisation practices. We contend that these categories originated within a postcolonial paradigm and that increasing immigration and new forms of mobility are creating the preconditions for new discourses on identity construction that have implications for the current collaborative TB strategy. (shrink)

Zifcak, Spencer Nobody at this conference should disagree that freedom of expression is a political principle of fundamental value.

I will discuss a variety of cases such that the subject's believing truly is somewhat of an accident, but less so than in a Gettier case. In each case, this is because her reasons are not ultimately undefeated full stop, but they are ultimately undefeated with certain qualifications. For example, the subject's reasons might be ultimately defeated considered in themselves but ultimately undefeated considered as a proper part of an inference to the best explanation that is undefeated without qualification. In (...) each section of the paper, I consider different qualifications and show how in each case we get an epistemic standing I call “coach-class knowledge”. First-class knowledge requires justifying reasons that are undefeated without qualification. Coach-class knowledge only requires qualified lack of defeat. I will use this distinction to bring debates over knowledge from falsehood and fake barns to an ecumenical resolution. In both cases, the subject enjoys coach-class rather than first-class knowledge. I will also show that the defeasible reasoning tradition can better account for graded accidental truth than safety theories. (shrink)

In this essay, I examine the reception and use of Aristotle’s four causes by twelfth- and thirteenth-century Latin Christian theologians, primarily at Paris. I pay special attention to the early thirteenth century, when Aristotle’s works on natural philosophy were officially prohibited in the French capital. By looking at a wide range of texts from both prominent and obscure theologians, I hope to contribute to an expanded view of the ways in which intellectuals in the Latin west received and appropriated Aristotle’s (...) ideas. (shrink)

There is, naturally, no more ambiguous factor in all human knowledge than the possible bearing of what we do not know on what we do know.

Reasons rationalize beliefs. Reasons, when all goes well, turn true beliefs into knowledge. I am interested in the relationship between these aspects of reasons. Without a proper understanding of their relationship, the theory of knowledge will be less illuminating than it ought to be. I hope to show that previous accounts have failed to account for this relationship. This has resulted in a tendency to focus on justification rather than knowledge. It has also resulted in many becoming skeptical about the (...) prospects for an analysis of knowledge. The skepticism is misplaced and the tendency can be fixed without sacrificing any insights. The solution is to see how good reasons (in a sense to be articulated) are apparent (in a sense to be articulated) to the knowing subject. Once this claim is unpacked, we see that it is an illuminating analysis of knowledge in terms of distinct but intimately related aspects of epistemic assessment. It helps us see the value of knowledge (over and above true belief) and it affords us a unified, “reasons-first” metaepistemology. The resulting picture is neither a familiar kind of internalism or externalism. (shrink)

We discuss the view that a hole is identical to the region of spacetime at which it is located. This view is more parsimonious than the view that holes are sui generis entities located at those regions surrounded by their hosts and it is more plausible than the view that there are no holes. We defend the spacetime view from several objections.

Many philosophers have noted that normative error theorists appear to be committed to saying ‘Error theory is true, but I have no reason to believe it’, which seems paradoxical. In defence of error...

In this article, we argue that dominant norms of demographic data are insufficient for accounting for the complexities that characterize many lesbian, gay, bisexual, transgender, and queer lives. Here, we draw from the responses of 178 people who identified as non-heterosexual or non-cisgender to demographic questions we developed regarding gender and sexual orientation. Demographic data commonly imagines identity as fixed, singular, and discrete. However, our findings suggest that, for LGBTQ people, gender and sexual identities are often multiple and in flux. (...) An overwhelming majority of our respondents reported shifting in their understandings of their sexual identities over time. In addition, for many of our respondents, gender identity was made up of overlapping factors, including the relationship between gender and transgender identities. These findings challenge researchers to reconsider how identity is understood as and through data. Drawing from critical data studies, feminist and queer digital media studies, and social justice initiatives like Data for Black Lives, we call for a reimagining of identity-based data as “queer data” or “data for queer lives.” We offer also recommendations for researchers to develop more inclusive survey questions. At the same time, we address the ways that queer perspectives destabilize the underlying logics of data by resisting classification and “capture.” For marginalized people, the stakes of this work extend beyond academia, especially in the era of algorithms and big data when the issue of who is or is not “counted” profoundly affects visibility, access, and power in the digital realm. (shrink)

In this paper, I will present a problem for reductive accounts of knowledge-undermining epistemic luck. By “reductive” I mean accounts that try to analyze epistemic luck in non-epistemic terms. I will begin by briefly considering Jennifer Lackey's (2006) criticism of Duncan Pritchard's (2005) safety-based account of epistemic luck. I will further develop her objection to Pritchard by drawing on the defeasible-reasoning tradition. I will then show that her objection to safety-based accounts is an instance of a more general problem with (...) reductive accounts of epistemic luck. In short, they face a dilemma: they can either fail to vindicate the intuitive verdicts about cases or they can illicitly appeal to the epistemic vocabulary they are trying to reduce. The upshot is that we can only understand epistemic luck in terms of the assessment of the subject's reasons and we can't give a reductive account of that. (shrink)

Perhaps a part of what makes expertise so inspiring to the curious researcher is the possibility of appropriating the structural components of skilled action to draw a roadmap towards their achievement that anyone might be able to follow. Accordingly, the purpose of this essay is to shed light upon the role that creativity plays in the production and environment of skilled action to that foregoing end. In doing so, I suggest that the lessons to be learned from recent empirical research (...) on creativity has much to offer to the cognitive science of skill and expertise. Experts are able to bring their intelligence to bear in controlling fast and seemingly automatic actions by utilizing a form of control often called ‘intelligent automaticity.’ In this spirit, I argue that the environment of intelligently automatic action control curates a similarly ideal environment for the processes of creativity. Moreover, insofar as creativity is ideally operative within the environment of expert action control, I argue further that creativity functions as one representative form of ‘intelligence’ embedded within otherwise fluid, and automatic expert actions. Creativity is able to do so even without conscious representation through the powers of incubated cognition. (shrink)

It is argued that Adam Smith criticizes David Hume's account of the origin of and continuing adherence to the rule of law for being not sufficiently Humean. Hume explained that adherence to the rule of law originated in the self-interest to restrain self-interest. According to Smith, Hume does not pay enough attention to the passions of resentment and admiration, which have their source in the imagination. Smith's offers a more naturalistic and evolutionary account of the psychological pre-conditions of the establishment (...) and morality of justice than Hume had. Yet, Smith's account also makes room for a thin conception of Lockean natural right to property, while rejecting the contractualist and rationalistic elements in Locke. It emerges that Smith severs the intimate connection that Hobbes and Hume made between justice and property. (shrink)

Normative pluralism is the view that practical reason consists in an irreducible plurality of normative domains, that these domains sometimes issue conflicting recommendations and that, when this happens, there is never any one thing that one ought simpliciter to do. Here I argue against this view, noting that normative pluralism must be either unrestricted or restricted. Unrestricted pluralism maintains that all coherent standards are reason-generating normative domains, whereas restricted pluralism maintains that only some are. Unrestricted pluralism, depending on how it (...) is cashed out, is either nihilism about practical reason or else it is subjectivism. Neither view is consistent with normative pluralism; hence, pluralism must be restricted. Restricted pluralism, however, faces two problems. The first stems from the question: “Why is it that some standards are normative domains while others are not?” The question seems to demand an answer, but it is hard to give any answer without appealing to considerations that imply facts about what we ought simpliciter to do. Second, restricted pluralism has difficulty accounting for our intuitions about cases in which one option is optimal in all domains, but not better than each alternative in any one domain. The unique option that is optimal in every domain seems better than its competitors, though it isn’t better within any domain. This is different than the widely discussed argument from notable-nominal comparisons. So I conclude that we have good reason to reject restricted pluralism, the only form of normative pluralism really worthy of that name. (shrink)

Epistemic injustice occurs when we fail to appropriately respect others as epistemic agents. Philosophers building on the work of Miranda Fricker, who introduced the concept, have focused on epistemic injustices involving certain social categories, particularly race and gender. Can there be epistemic injustice attached to political conviction and affiliation? I argue yes: politics can be a salient social category that draws epistemic injustice. Epistemic injustices might also be intersectional, based on the overlap of politics and some other identity category like (...) race or sex. Further, and more provocatively, I argue that political minorities in academia, in particular conservatives and libertarians, are most likely the victims of epistemic injustice on the basis of their politics. Such epistemic injustices might even be routine. Although more limited in scope and severity than other forms of epistemic injustice, political epistemic injustices in academia ought to be of special concern from a standpoint of social justice because of the academy’s central role in knowledge production and dissemination. (shrink)

Studies in the psychology of visual expertise have tended to focus on a limited set of expert domains, such as radiology and athletics. Conclusions drawn from these data indicate that experts use parafoveal vision to process images holistically. In this study, we examined a novel, as-of-yet-unstudied class of visual experts—architects—expecting similar results. However, the results indicate that architects, though visual experts, may not employ the holistic processing strategy observed in their previously studied counterparts. Participants (n = 48, 24 architects, 24 (...) naïve) were asked to find targets in chest radiographs and perspective images. All images were presented in both gaze-contingent and normal viewing conditions. Consistent with a holistic processing model, we expected two results: (1) architects would display a greater difference in saccadic amplitude between the gaze- contingent and normal conditions, and (2) architects would spend less time per search than an undergraduate control group. We found that the architects were more accurate in the perspectival task, but they took more time and displayed a lower difference in saccadic amplitude than the controls. Our research indicates a disjunctive conclusion. Either architects are simply different kinds of visual experts than those previously studied, or we have generated a task that employs visual expertise without holistic processing. Our data suggest a healthy skepticism for across-the-board inferences collected from a single domain of expertise to the nature of visual expertise generally. More work is needed to determine whether holism is a feature of all visual expertise. (shrink)

: A virtually unknown philosopher of the twentieth century, Spencer Heath was nevertheless well-known as a pioneer in the early development of commercial aviation. He retired from business in 1931 to devote the last thirty years of his life to his long-time interest in the philosophy of science and human social organization. He developed ….