A Brief History of Time: From the Big Bang to Black Holes is a popular-science book on cosmology (the study of the origin and evolution of the universe) by British physicist Stephen Hawking. It was first published in 1988. Hawking wrote the book for readers who have no prior knowledge of the universe and people who are interested in learning.

Tras señalar que la Segunda Ley de la Termodinámica se cumple porque el universo empezó en un estado ordenado, y que para predecir el estado inicial se deben ocupar tanto la relatividad general como la teoría cuántica, Hawking propone que el universo no tiene una sola historia sino todas las historias posibles, cada una con su propia amplitud de probabilidad. Postula que las historias del universo dependen de lo que está siendo medido, al revés de la idea habitual de que (...) el universo tiene una historia objetiva, independiente del observador: creamos la historia mediante nuestra observación, en lugar de que la historia nos cree a nosotros. Sostiene que la condición inicial para el universo es una de ausencia de fronteras, lo que implica que el universo primitivo debió haber sido casi liso, pero con pequeñas irregularidades; y que éstas habrían crecido luego bajo la influencia de la gravedad y conducido a la formación de galaxias, estrellas y, en último término, a seres considerados inteligentes. (shrink)

We present a formal semantics for epistemic logic, capturing the notion of knowability relative to information (KRI). Like Dretske, we move from the platitude that what an agent can know depends on her (empirical) information. We treat operators of the form K_AB (‘B is knowable on the basis of information A’) as variably strict quantifiers over worlds with a topic- or aboutness- preservation constraint. Variable strictness models the non-monotonicity of knowledge acquisition while allowing knowledge to be intrinsically stable. Aboutness-preservation models (...) the topic-sensitivity of information, allowing us to invalidate controversial forms of epistemic closure while validating less controversial ones. Thus, unlike the standard modal framework for epistemic logic, KRI accommodates plausible approaches to the Kripke-Harman dogmatism paradox, which bear on non-monotonicity, or on topic-sensitivity. KRI also strikes a better balance between agent idealization and a non-trivial logic of knowledge ascriptions. (shrink)

Einstein said that the most incomprehensible thing about the universe is that it is comprehensible. But was he right? Can the quantum theory of fields and Einstein's general theory of relativity, the two most accurate and successful theories in all of physics, be united in a single quantum theory of gravity? Two of the world's most famous physicists - Stephen Hawking and Roger Penrose - disagree. Here they explain their positions in a work based on six lectures with a final (...) debate, all originally presented at the Isaac Newton Institute for Mathematical Sciences at the University of Cambridge. (shrink)

Dr. Stephen Hawking was the most renowned scientist since Einstein, known both for his groundbreaking work in physics and cosmology and for his mischievous sense of humor. He educated millions of readers about the origins of the universe and the nature of black holes, and inspired millions more by defying a terrifying early prognosis of ALS, which originally gave him only two years to live. In later life he could communicate only by using a few facial muscles, but he continued (...) to advance his field and serve as a revered voice on social and humanitarian issues. Hawking not only unraveled some of the universe's greatest mysteries but also believed science plays a critical role in fixing problems here on Earth. Now he turns his attention to the most urgent issues facing us. Will humanity survive? Should we colonize space? Does God exist? These are just a few of the questions Hawking addresses in this wide-ranging, passionately argued final book from one of the greatest minds in history. Featuring a foreword by Eddie Redmayne, who won an Oscar playing Stephen Hawking, an introduction by Nobel Laureate Kip Thorne, and an afterword from Hawking's daughter, Lucy. (shrink)

Our topic is the theory of topics. My goal is to clarify and evaluate three competing traditions: what I call the way-based approach, the atom-based approach, and the subject-predicate approach. I develop criteria for adequacy using robust linguistic intuitions that feature prominently in the literature. Then I evaluate the extent to which various existing theories satisfy these constraints. I conclude that recent theories due to Parry, Perry, Lewis, and Yablo do not meet the constraints in total. I then introduce the (...) issue-based theory—a novel and natural entry in the atom-based tradition that meets our constraints. In a coda, I categorize a recent theory from Fine as atom-based, and contrast it to the issue-based theory, concluding that they are evenly matched, relative to our main criteria of adequacy. I offer tentative reasons to nevertheless favour the issue-based theory. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Journal of the History of Ideas 62.1 (2001) 141-160 [Access article in PDF] The Politics of Character in John Milton's Divorce Tracts David Hawkes nunquam privatum esse sapientum --Cicero I. There has recently been a great deal of debate over the relative influence on Milton's politics of two discordant revolutionary ideologies: classical republicanism and radical Protestant theology. 1 In the mid-seventeenth century the search for intellectual precedents and rationalizations (...) of the English revolution brought these two traditions into an uneasy alliance, and Milton, like many other revolutionary apologists, drew on both of them. Of course the two schools of thought are not necessarily incompatible. J. G. A. Pocock notes one point of connection between them: The context in which men attain their final end--or recover their prima forma, though this concept might not have been antinomian enough for the radical saints of the New Model--is that of apocalypse; the "end" of Aristotelian teleology is still united with the eschatological "end" of prophetic time. 2The Aristotelian "end" of man is the good, defined as "an activity of soul in accordance with virtue," and the belief that one can or has fulfilled that end is [End Page 141] certainly amenable to Protestant antinomianism. 3 Furthermore, as Sharon Achinstein points out, Milton's "conception of virtue... melds the religious notion of conscience with a classical sense of civic duty." 4 On the other hand there are significant differences between the classical and the Christian notions of "virtue" and the "good," which dictate that, as Nigel Smith puts it, "[c]lassical republicanism, properly conceived, would in many ways be in conflict with the millenarian, chiliastic and perfectionist Protestantism of the sects." 5 The problem faced by Milton as a Protestant Republican is that the definition of the "good" offered by millennial sanctification and that attainable through Aristotelian virtue are in many ways mutually exclusive and contradictory. They have been characterized as such ever since Augustine's City of God asserted that pagan ethics are incompatible with true, Christian virtue. 6 Millennialism relies on faith; civic humanist virtue relies on works. Antinomianism abolishes the law; republicanism institutes the rule of law. The saints are sanctified by grace; the virtuous are distinguished by their own strength of character. Radical Protestant freedom is negative and private--it is the ability to speak and worship according to the dictates of conscience; civic humanist liberty is positive and public, the ability to participate fully in the government of the res publica. While daunting, however, these contradictions are not quite insuperable. I believe that Milton finds a common denominator in the accounts given by these two traditions of psychological objectification and that the agreement of Roman and Christian morality on this point leads him to make the tendency to objectification (or rather the ability to resist that tendency) the central issue of his mature political theory.The political ideas of the classical republicans and their descendants, the Renaissance civic humanists, were based upon Aristotle's Politics and Nico-machean Ethics, while the intellectual sources of radical Protestantism can be traced to Luther's commentaries on Paul's epistles. During the English revolution the Pauline exegesis of the relationship between the old and the new covenants provided intellectual ammunition against custom and tradition, as well as inspiring the antinomianism of the radical fringe to which Milton was falsely accused of adhering during the divorce controversy. In the divorce tracts Milton points out that Aristotle and Paul share one fundamental tenet: they argue that interior and exterior slavery are of the same nature and therefore concomitant [End Page 142] and inseparable. Furthermore, Milton notes, Aristotle and Paul both claim that exterior and interior slavery consist in "carnality," the subjection of the spirit to the flesh. This identification of carnality with servility becomes a constant strain which runs throughout Milton's career and provides the consistent element in his apparently vacillating theories of politics and religion.II. Although this argument recurs throughout Milton's career, it is first hammered into shape during the divorce controversy... (shrink)

An exploration of the central role of indirect modes of expression in ancient China.

A Sociology of Sex and Sexuality offers an historical sociological analysis of ideas about expressions of sexual desire, combining both primary and secondary historical and theoretical material with original research and popular imagery in the contemporary context. While some reference is made to the sexual ideology of Classical Antiquity and of early Christianity, the major focus of the book is on the development of ideas about sex and sexuality in the context of modernity. It questions the widespread assumption that the (...) anxieties and fears associated with old sexual mores have been overcome in the late twentieth century context, and asks whether the discourses of Queer sexual politics have successfully fractured the binary categories of heterosexuality and homosexuality. A Sociology of Sex and Sexuality will be of interest to students in the fields of sociology, sexual history, gender studies and cultural studies. (shrink)

We examine a prominent naturalistic line on the method of cases, exemplified by Timothy Williamson and Edouard Machery: MoC is given a fallibilist and non-exceptionalist treatment, accommodating moderate modal skepticism. But Gettier cases are in dispute: Williamson takes them to induce substantive philosophical knowledge; Machery claims that the ambitious use of MoC should be abandoned entirely. We defend an intermediate position. We offer an internal critique of Macherian pessimism about Gettier cases. Most crucially, we argue that Gettier cases needn’t exhibit (...) ‘disturbing characteristics’ that Machery posits to explain why philosophical cases induce dubious judgments. It follows, we show, that Machery’s central argument for the effective abandonment of MoC is undermined. Nevertheless, we engineer a restricted variant of the argument—in harmony with Williamsonian ideology–that survives our critique, potentially limiting philosophy’s scope for establishing especially ambitious modal theses, despite traditional MoC’s utility being partially preserved. (shrink)

Single-premise epistemic closure is the principle that: if one is in an evidential position to know that P where P entails Q, then one is in an evidential position to know that Q. In this paper, I defend the viability of opposition to closure. A key task for such an opponent is to precisely formulate a restricted closure principle that remains true to the motivations for abandoning unrestricted closure but does not endorse particularly egregious instances of closure violation. I focus (...) on two brands of epistemic theory that naturally incorporate closure restrictions. The first type holds that the truth value of a knowledge ascription is relative to a relevant question. The second holds that the truth value of a knowledge ascription is relative to a relevant topic. For each approach, I offer a formalization of a leading theory from the literature and use this formalization to evaluate the theory’s adequacy in terms of a precise set of desiderata. I conclude that neither theory succeeds in meeting these desiderata, casting doubt on the viability of the underlying approaches. Finally, I offer a novel variant of the topic-sensitive approach that fares better. (shrink)

When do two sentences say the same thing, that is, express the same content? We defend two-component (2C) semantics: the view that propositional contents comprise (at least) two irreducibly distinct constituents, (1) truth-conditions, and (2) subject-matter. We contrast 2C with one-component (1C) semantics, focusing on the view that subject-matter is reducible to truth- conditions. We identify exponents of this view and argue in favor of 2C. An appendix proposes a general formal template for propositional 2C semantics.

We propose a solution to the problem of logical omniscience in what we take to be its fundamental version: as concerning arbitrary agents and the knowledge attitude per se. Our logic of knowledge is a spin-off from a general theory of thick content, whereby the content of a sentence has two components: an intension, taking care of truth conditions; and a topic, taking care of subject matter. We present a list of plausible logical validities and invalidities for the logic of (...) knowledge per se for arbitrary agents, and isolate three explanatory factors for them: the topic-sensitivity of content; the fragmentation of knowledge states; the defeasibility of knowledge acquisition. We then present a novel dynamic epistemic logic that yields precisely the desired validities and invalidities, for which we provide expressivity and completeness results. We contrast this with related systems and address possible objections. (shrink)

These are challenging times for leaders who believe schools must teach history honestly, be laboratories of democracy, and honor differences while finding common cause. This book, grounded in two decades of work in diverse school settings, provides guidance to help us remain steadfast in the work. -Racial justice: Beyond proclamations, how can school leaders reallocate resources to support substantive anti-racist school reforms? -Democratic practice: How can school leaders who have significant authority in a hierarchical system wield their power in support (...) of democracy? -Restorative justice: With time in short supply, how can schools truly embrace restorative practice, which calls for slowing down to repair and prevent harm? -Student activism: How can school leaders uphold rules while also supporting students who disrupt in the name of justice? -Counter-extremism: White supremacist threats are a danger to our communities. How can school leaders carefully confront the extremism of these troubled times? Compelling stories drawn from contemporary school contexts help illuminate each of these questions in fine detail. Each chapter concludes with a list of concrete actions every school leader can take in pursuit of answers. Administrators, teacher leaders, and those who support school reform with justice in mind will find both practical guidance and inspiration. (shrink)

When one thinks—knows, believes, imagines—that something is the case, one’s thought has a topic: it is about something, towards which one’s mind is directed. What is the logic of thought, so understood? This book begins to explore the idea that, to answer the question, we should take topics seriously. It proposes a hyperintensional account of the propositional contents of thought, arguing that these are individuated not only by the set of possible worlds at which they are true, but also by (...) their topic: what they are about. The book then builds epistemic, doxastic, probabilistic, and conditional logics based on this view. It applies them to issues ranging from dogmatism, scepticism, and epistemic fallibilism, to imagination and suppositional reasoning, belief revision, framing effects, and the acceptability of indicative conditionals. (shrink)

Terence Hawkes looks at "King Lear, Measure for Measure, A Midsmmer Night's Dream" and "Coriolanus," as examples from this century of how Shakespeare's plays function as a language through which we generate meaning.

We explore some possibilities for developing epistemic logic using truthmaker semantics. We identify three possible targets of analysis for the epistemic logician. We then list some candidate epistemic principles and review the arguments that render some controversial. We then present the classic Hintikkan approach to epistemic logic and note—as per the ‘problem of logical omniscience’—that it validates all of the aforementioned principles, controversial or otherwise. We then lay out a truthmaker framework in the style of Kit Fine and present six (...) different ways of extending this semantics with a conditional knowledge operator, drawing on notions of implication and content that are prominent in Fine’s work. We demonstrate that different logics are thereby generated, bearing on the aforementioned epistemic principles. Finally, we offer preliminary observations about the prospects for each logic. (shrink)

Expressivists about epistemic modals deny that ‘Jane might be late’ canonically serves to express the speaker’s acceptance of a certain propositional content. Instead, they hold that it expresses a lack of acceptance. Prominent expressivists embrace pragmatic expressivism: the doxastic property expressed by a declarative is not helpfully identified with that sentence’s compositional semantic value. Against this, we defend semantic expressivism about epistemic modals: the semantic value of a declarative from this domain is the property of doxastic attitudes it canonically serves (...) to express. In support, we synthesize data from the critical literature on expressivism—largely reflecting interactions between modals and disjunctions—and present a semantic expressivism that readily predicts the data. This contrasts with salient competitors, including: pragmatic expressivism based on domain semantics or dynamic semantics; semantic expressivism à la Moss [2015]; and the bounded relational semantics of Mandelkern [2019]. (shrink)

The goal of the current paper is to provide an introduction to and survey of the diverse landscape of relevant alternatives theories of knowledge. Emphasis is placed throughout both on the abstractness of the relevant alternatives approach and its amenability to formalization through logical techniques. We present some of the important motivations for adopting the relevant alternatives approach; briefly explore the connections and contrasts between the relevant alternatives approach and related developments in logic, epistemology and philosophy of science; provide a (...) schema for classifying and studying relevant alternatives theories at different levels of abstraction; and present a sample of relevant alternatives theories (contrasting what we call question-first and topic-first theories) that tie our discussion to on-going debates in the philosophical literature, as well as showcasing techniques for formalizing some of the important positions in these debates. (shrink)

Laws, codes, and rules are essential for any community, public or private, to operate in an orderly and productive fashion. Without laws and codes, anarchy and chaos abound and the purpose and role of the organization is lost. However, danger is significant, and damage serious and far-reaching when individuals or organizations become so focused on rules, laws, and specifications that basic principles are ignored. This paper discusses the purpose of laws, rules, and codes, to help understand basic principles. With such (...) an understanding an increase in the level of ethical and moral behavior can be obtained without imposing detailed rules. (shrink)

My topic is moderate modal skepticism in the spirit of Peter van Inwagen. Here understood, this is a conservative version of modal empiricism that severely limits the extent to which an ordinary agent can reasonably believe “exotic” possibility claims. I offer a novel argument in support of this brand of skepticism: modal skepticism grounds an attractive (and novel) reply to Humean skepticism. Thus, I propose that modal skepticism be accepted on the basis of its theoretical utility as a tool for (...) dissolving philosophical paradox. (shrink)

Animates the erratic, often mercenary character of America's pen of independence and sometime anonymous political columnist whose pungent propaganda profoundly influenced the two greatest sociopolitical upheavals of the 18th century.

The ratio of index- and ring-finger lengths is thought to be related to prenatal androgen exposure, and in many, though not all, populations, men have a lower average digit ratio than do women. In many studies an inverse relationship has been observed, among both men and women, between 2D:4D ratio and measures of athletic ability. It has been further suggested that, in hunter-gatherer populations, 2D:4D ratio might also be negatively correlated with hunting ability, itself assumed to be contingent on athleticism. (...) This hypothesis has been tested using endurance running performance among runners from a Western, educated, and industrialized population as a proximate measure of hunting ability. However, it has not previously been tested among actual hunter-gatherers using more ecologically valid measures of hunting ability and success. The current study addresses this question among Tanzanian Hadza hunter-gatherers. I employ a novel method of assessing hunting reputation that, unlike previous methods, allows granular distinctions to be made between hunters at all levels of perceived ability. I find no statistically significant relationship between digit ratio and either hunting reputation or two important hunting skills. I confirm that Hadza men have higher mean 2D:4D ratios than men in many Western populations. I discuss the notion that 2D:4D ratio may be the consequence of an allometric scaling relationship between relative and absolute finger lengths. Although it is difficult to draw clear conclusions from these results, the current study provides no support for the theorized relationship between 2D:4D ratio and hunting skill. (shrink)

As health policy-makers around the world seek to make progress towards universal health coverage, they must navigate between two important ethical imperatives: to set national spending priorities fairly and efficiently; and to safeguard the right to health. These imperatives can conflict, leading some to conclude that rights-based approaches present a disruptive influence on health policy, hindering states’ efforts to set priorities fairly and efficiently. Here, we challenge this perception. We argue first that these points of tension stem largely from inadequate (...) interpretations of the aims of priority setting as well as the right to health. We then discuss various ways in which the right to health complements traditional concerns of priority setting and vice versa. Finally, we set out a three-step process by which policy-makers may navigate the ethical and legal considerations at play. (shrink)

In this paper, the author defends Peter van Inwagen’s modal skepticism. Van Inwagen accepts that we have much basic, everyday modal knowledge, but denies that we have the capacity to justify philosophically interesting modal claims that are far removed from this basic knowledge. The author also defends the argument by means of which van Inwagen supports his modal skepticism, offering a rebuttal to an objection along the lines of that proposed by Geirrson. Van Inwagen argues that Stephen Yablo’s recent and (...) influential account of the relationship between conceivability and possibility supports his skeptical claims. The author’s defence involves a creative interpretation and development of Yablo’s account, which results in a recursive account of modal epistemology, what the author calls the “safe explanation” theory of modal epistemology. (shrink)

What does ‘Smith knows that it might be raining’ mean? Expressivism here faces a challenge, as its basic forms entail a pernicious type of transparency, according to which ‘Smith knows that it might be raining’ is equivalent to ‘it is consistent with everything that Smith knows that it is raining’ or ‘Smith doesn’t know that it isn’t raining’. Pernicious transparency has direct counterexamples and undermines vanilla principles of epistemic logic, such as that knowledge entails true belief and that something can (...) be true without one knowing it might be. I re-frame the challenge in precise terms and propose a novel expressivist formal semantics that meets it by exploiting (i) the topic-sensitivity and fragmentation of knowledge and belief states and (ii) the apparent context-sensitivity of epistemic modality. The resulting form of assertibility semantics advances the state of the art for state-based bilateral semantics by combining attitude reports with context-sensitive modal claims, while evading various objectionable features. In appendices, I compare the proposed system to Beddor and Goldstein’s ‘safety semantics’ and discuss its analysis of a modal Gettier case due to Moss. (shrink)

Pacifism involves a number of related moral positions, endorsed for different reasons, often evoking powerful emotional responses. To understand pacifism, we need to identify what pacifism is, or what pacifisms there are, by (1) looking at pacifism's core meaning, etymology, uses, near neighbors, and relationship to just war theory; (2) distinguishing absolute versus contingent pacifism; (3) categorizing pacifism's chief motivators such as nonviolence, nonkilling, moral autonomy, libertarianism, nuclear war, and religious teachings; (4) highlighting pacifism's role in international relations in the (...) United Nations, pacifist nations, the human rights debate, and legal standing as conscientious objectors; and (5) articulating and responding to pacifism's perennial criticisms. (shrink)

Roger Penrose's original and provocative ideas about the large-scale physics of the Universe, the small-scale world of quantum physics and the physics of the mind have been the subject of controversy and discussion. These ideas were set forth in his best-selling books The Emperor's New Mind and Shadows of the Mind. In this book, he summarises and brings up to date his current thinking in these complex areas. He presents a masterful summary of those areas of physics in which he (...) feels there are major unsolved problems. Through this, he introduces radically new concepts which he believes will be fruitful in understanding the workings of the brain and the nature of the human mind. These ideas are then challenged by three distinguished experts from different backgrounds - Abner Shimony and Nancy Cartwright as Philosophers of Science and Stephen Hawking as a Theoretical Physicist and Cosmologist. Finally, Roger Penrose responds to their thought-provoking criticisms. This volume provides an accessible, illuminating and stimulating introduction to Roger Penrose's vision of theoretical physics for the 21st Century. His enthusiasm, insight and good humour shine through this brilliant account of the problems of modern physics. (shrink)

We investigate, in a logical setting, the expressivist proposal that assertion primarily functions to express and coordinate doxastic states and that ‘might’ fundamentally expresses lack of belief. We provide a formal model of an agent’s doxastic state and novel assertability conditions for an associated formal language. We thereby prove that an arbitrary assertion always succeeds in expressing a well-defined doxastic state, and propose a fully general and intuitive update operation as a model of an agent coming to accept an arbitrary (...) assertion. Leaving a comprehensive philosophical and linguistic defense for elsewhere, we explore technical aspects of our framework, providing, for instance, a complete logic of assertability and reduction axioms for the novel update operations related to our proposal. Finally, we contrast our work with related proposals in the logic literature. (shrink)

Developmental psychologists identify propensities for social engagement in human infants that are less evident in other apes; Sarah Hrdy links these social propensities to novel features of human childrearing. Unlike other ape mothers, humans can bear a new baby before the previous child is independent because they have help. This help alters maternal trade-offs and so imposes new selection pressures on infants and young children to actively engage their caretakers’ attention and commitment. Such distinctive childrearing is part of our grandmothering (...) life history. While consequences for other cooperative activities must surely follow, the novel rearing environments set up by helpful grandmothering can explain why natural selection escalated preferences and motivations for interactivity in our lineage in the first place, and why, unlike other aspects of infant development, social sensitivities are not delayed in humans compared with genus Pan. (shrink)

Drawing on the puzzling behavior of ordinary knowledge ascriptions that embed an epistemic (im)possibility claim, we tentatively conclude that it is untenable to jointly endorse (i) an unfettered classical logic for epistemic language, (ii) the general veridicality of knowledge ascription, and (iii) an intuitive ‘negative transparency’ thesis that reduces knowledge of a simple negated ‘might’ claim to an epistemic claim without modal content. We motivate a strategic trade-off: preserve veridicality and (generalized) negative transparency, while abandoning the general validity of contraposition. (...) We criticize various approaches to incorporating veridicality into domain semantics, a paradigmatic ‘information-sensitive’ framework for capturing negative transparency and, more generally, the non-classical behavior of sentences with epistemic modals. We then present a novel information-sensitive semantics that successfully executes our favored strategy: stable acceptance semantics, extending a vanilla bilateral state-based semantics for epistemic modals with a knowledge operator loosely inspired by the defeasibility theory of knowledge. (shrink)

Both gender and the law are significant determinants of health and well-being. Here, we put forward evidence to unpack the relationship between gender and outcomes in health and well-being, and explore how legal determinants interact and intersect with gender norms to amplify or reduce health inequities across populations. The paper explores the similarities between legal and health systems in their response to gender—both systems portray gender neutrality but would be better described as gender-blind. We conclude with a set of recommendations (...) to address both law and gender in implementing the work of the Lancet Commission on the legal determinants of health to improve health outcomes for all, irrespective of gender. (shrink)

This article explores the notion of gender overdetermination in relation to a community of criminalised women in Massachusetts. Re-examining classic writings on overdetermination by Louis Althusser, Sigmund Freud, Frantz Fanon and Jean-Paul Sartre, we query the notion of gender overdetermination and posit it as an effective lens for thinking about the persistence of gender as a social construct. The combination of the structural processes of overdetermination with the discursive and ideological power of overdetermination complicates and reduces possibilities and effectiveness of (...) sustained acts of resistance. The criminalised women of our study permanently inhabit a space in which aetiology, practice, discipline and interpretation are all hyper-gendered, meaning that acts of resistance are construed as more evidence of inescapable and essential gender identity. (shrink)

Logics of joint strategic ability have recently received attention, with arguably the most influential being those in a family that includes Coalition Logic (CL) and Alternating-time Temporal Logic (ATL). Notably, both CL and ATL bypass the epistemic issues that underpin Schelling-type coordination problems, by apparently relying on the meta-level assumption of (perfectly reliable) communication between cooperating rational agents. Yet such epistemic issues arise naturally in settings relevant to ATL and CL: these logics are standardly interpreted on structures where agents move (...) simultaneously, opening the possibility that an agent cannot foresee the concurrent choices of other agents. In this paper we introduce a variant of CL we call Two-Player Strategic Coordination Logic (SCL2). The key novelty of this framework is an operator for capturing coalitional ability when the cooperating agents cannot share strategic information. We identify significant differences in the expressive power and validities of SCL2 and CL2, and present a sound and complete axiomatization for SCL2. We briefly address conceptual challenges when shifting attention to games with more than two players and stronger notions of rationality. (shrink)

Cambre and Hawkes offer a framework for thinking about technology as it impacts teaching and learning today. We look at technology through a trifocal lense: technology as teaching aid, technology as threat, and technology as progress. We trace the evolution of school technology briefly, leading up to the computer as the point convergence. From the toys they play with to the tools they learn with, we see that students are bombarded with things technological. This mushrooming of technology and how it (...) is to be integrated into the classroom presents challenges that must be confronted so that, indeed, no child is left behind. (shrink)

It is only in recent years that soccer has become big business, and the ethical strains are beginning to show. What is the “product” and where do fans figure in the list of “stakeholders”? The writer is completing his MBA at London Business School, and is a lifelong football fan.

I construe Relevant Alternatives Theory (RAT) as an abstract combination of anti-skepticism and epistemic modesty, then re-evaluate the challenge posed to it by the missed clue counterexamples of Schaffer. The import of this challenge has been underestimated, as Schaffer’s specific argument invites distracting objections. I offer a novel formalization of RAT, accommodating a suitably wide class of concrete theories of knowledge. Then, I introduce ‘abstract missed clue cases’ and prove that every RA theory, as formalized, admits such a case. This (...) yields an argument—in Schaffer’s spirit—that resists easy dismissal. (shrink)

I was optimistic of a new beginning in an open society when I came to America in 1999. Since then, I have indeed benefited from many aspects of American life. I have learned a lot – especially through my experience with small farms and farmers. But now, it's time to move on. And it was reading Debt and Dispossession, a book about American agriculture and human values, that crystallized in me why I wanted to leave. By telling the story of (...) the 1980s farm crisis through the words of the residents of a Minnesota town, the book prizes open many of the contradictions of American society. The 1970s were boom times for mid-western farms; farmers took advantage of “easy” farm credit to finance expansion. By the 1980s, the boom burst and slump loomed. Lenders wanted their money back and thousands of farmers were dispossessed. Debt and Dispossession probes beneath the surface of a community apparently united in protest against the dispossessions. Underneath, it finds a tangled picture of a society at war with itself, pitting farmer against farmer in a fratricidal struggle. The book let me glimpse the paradox of American individualism, all-American contradictions centering on government and consumerism, frugality and morality. Just like my experience of American agriculture and farmers as a whole, Debt and Dispossession helped me see the best side of America, but also revealed the fragility of life in a one-on-one society. (shrink)