In this paper, I explore the complex ethical dynamics of violence and nonviolence in Mahāyāna Buddhism by considering some of the historical precedents and scriptural prescriptions that inform modern and contemporary Buddhist acts of self-immolation. Through considering these scripturally sanctioned Mahāyāna ‘case studies,’ the paper traces the tension that exists in Buddhist thought between violence and nonviolence, outlines the interplay of key Mahāyāna ideas of transcendence and altruism, and comments on the mimetic status and influence of spiritually charged texts. It (...) is the contention of this paper that violent scriptural metaphors can create paradigms of enactment that are paradoxically illustrative of the core ‘non-violent’ Mahāyāna virtues of compassion, giving, patience, and vigor. The discussion will show that these virtues are underpinned by the Mahāyāna philosophical mainstays of non-duality, bodhisattvic transcendent altruism, skillful means, and dependent co-origination. (shrink)

This article criticises the political-economic analysis of settler colonial studies, which it draws out through an immanent critique of its most famous practitioners. It then offers a critical genealogy of the wider theoretical trend that secures it: the post-Cold War vogue of asserting the ever-increasing centrality of primitive accumulation in global capitalism – what we might term a mode of predation. Finally, it teases out the tensions and confusions in the reliance of settler colonial studies upon Marx’s concept of surplus (...) populations, as well as problems abounding in Patrick Wolfe’s ‘logic of elimination’. Overall, it argues that the frequent claim that we inhabit a global settler modernity cannot be sustained through these notions, and that this claim is profoundly moral and academic, lacking political and analytical value. The insistence on the durability of settler colonialism amounts, in this literature, to a claim on behalf of settler colonial studies itself. (shrink)

Mastery imagery (i.e., images of being in control and coping in difficult situations) is used to regulate anxiety. The ability to image this content is associated with trait confidence and anxiety, but research examining mastery imagery ability's association with confidence and anxiety in response to a stressful event is scant. The present study examined whether trait mastery imagery ability mediated the relationship between confidence and anxiety, and the subsequent associations on performance in response to an acute psychological stress. Participants (N= (...) 130; 55% male;Mage= 19.94 years;SD= 1.07 years) completed assessments of mastery imagery ability and engaged in a standardized acute psychological stress task. Immediately prior to the task, confidence, cognitive and somatic anxiety intensity, and interpretation of anxiety symptoms regarding the task were assessed. Path analyses supported a model whereby mastery imagery ability mediated the relationship between confidence and cognitive and somatic anxiety interpretation. Greater mastery imagery ability and confidence were both directly associated with better performance on the stress task. Mastery imagery ability may help individuals experience more facilitative anxiety and perform better during stressful tasks. Improving mastery imagery ability by enhancing self-confidence may help individuals successfully cope with anxiety elicited during stressful situations. (shrink)

What are the limits of physical computation? In his ‘Church’s Thesis and Principles for Mechanisms’, Turing’s student Robin Gandy proved that any machine satisfying four idealised physical ‘principles’ is equivalent to some Turing machine. Gandy’s four principles in effect define a class of computing machines (‘Gandy machines’). Our question is: What is the relationship of this class to the class of all (ideal) physical computing machines? Gandy himself suggests that the relationship is identity. We do not share this view. We (...) will point to interesting examples of (ideal) physical machines that fall outside the class of Gandy machines and compute functions that are not Turing-machine computable. (shrink)

'24 and Philosophy' is a book you just can't do without. It's all here, folks: the reason Presidents trust him; how Jack cuts through the lies and ambiguities; why he puts his life on the line for others; and how he knows which knee cap to blow out to get that all-important next lead. With the help of twenty "'24' crazed" philosophers, you'll figure out what makes this guy tick, and much much more. A witty, but philosophical exploration of (...) the popular television series '24', now in its sixth season Addresses pressing ethical issues relating to torture, terrorism and warfare Raises fascinating questions about knowledge, loyalty, and suspicion Explores in-depth the character and behaviour of Jack Bauer Written by philosophers who are all serious fans of the show. (shrink)

_24 and Philosophy_ is a book you just can't do without. It's all here, folks: the reason Presidents trust him; how Jack cuts through the lies and ambiguities; why he puts his life on the line for others; and how he knows which knee cap to blow out to get that all-important next lead. With the help of twenty "_24_ crazed" philosophers, you'll figure out what makes this guy tick, and much much more. A witty, but philosophical exploration of (...) the popular television series _24_, now in its sixth season Addresses pressing ethical issues relating to torture, terrorism and warfare Raises fascinating questions about knowledge, loyalty, and suspicion Explores in-depth the character and behaviour of Jack Bauer Written by philosophers who are all serious fans of the show. (shrink)

Presents general information about meteorology, weather, and climate and includes more than thirty activities to help study these topics, including making a ...

Two widespread assumptions concerning networks, including guanxi networks, are that they function in terms of trust relations and that their structure is dyadic. This article subjects both assumptions to critical assessment and proposes alternative formulations. When the distinctions between trust and trustworthiness and between trust and assurance are made, then broader understandings of guanxi relationships emerge. The article shows that the assurance mechanism of guanxi is public exposure of transgressions against network norms, leading to the transgressor’s loss of face (mianzi). (...) The necessity of third-party intervention of this type, typically but not exclusively through gossip, indicates the triadic rather than dyadic structure of guanxi relationships when sanction of reputation is included in the conceptualization of guanxi. Changes in guanxi during economic transition in China, from strong-to weaker-tie associations, require careful consideration of the changing nature of the mechanisms of face-loss. (shrink)

Stephen Davies presents a fascinating exploration of the idea that art, and our aesthetic sensibilities more generally, should be understood as an element in human evolution. He asks: Do animals have aesthetics? Do our aesthetic preferences have prehistoric roots? Is art universal? What is the biological role of aesthetic and artistic behaviour?

Classic text considersgeneral theory of computability, computable functions, operations on computable functions, Turing machines self-applied, unsolvable decision problems, applications of general theory, mathematical logic, Kleene hierarchy, computable functionals, classification of unsolvable decision problems and more.

This paper develops an argument against causal decision theory. I formulate a principle of preference, which I call the Guaranteed Principle. I argue that the preferences of rational agents satisfy the Guaranteed Principle, that the preferences of agents who embody causal decision theory do not, and hence that causal decision theory is false.

Philosophical arguments usually are and nearly always should be abductive. Across many areas, philosophers are starting to recognize that often the best we can do in theorizing some phenomena is put forward our best overall account of it, warts and all. This is especially true in esoteric areas like logic, aesthetics, mathematics, and morality where the data to be explained is often based in our stubborn intuitions. -/- While this methodological shift is welcome, it's not without problems. Abductive arguments involve (...) significant theoretical resources which themselves can be part of what's being disputed. This means that we will sometimes find otherwise good arguments which suggest their own grounds are problematic. In particular, sometimes revising our beliefs on the basis of such an argument can undermine the very justification we used in that argument. -/- This feature, which I'll call self-effacingness, occurs most dramatically in arguments against our standing views on the esoteric subject matters mentioned above: logic, mathematics, aesthetics, and morality. This is because these subject matters all play a role in how we reason abductively. This isn't an idle fact; we can resist some challenges to our standing beliefs about these subject matters exactly because the challenges are self-effacing. The self-effacing character of certain arguments is thus both a benefit and limitation of the abductive turn and deserves serious attention. I aim to give it the attention it deserves. (shrink)

Many philosophers and psychologists argue that out everyday ability to predict and explain the actions and mental states of others is grounded in out possession of a primitive 'folk' psychological theory. Recently however, this theory has come under challenge from the simulation alternative. This alternative view says that human beings are able to predict and explain each other's actions by using the resources of their own minds to simulate the psychological aetiology of the actions of the others. This book and (...) the companion volume Folk Psychology: The Theory of Mind Debate together offer a richly woven fabric of philosophical and psychological theory, which promises to yield real insights into the nature of our mental lives. (shrink)

Veridically perceiving puts us in a better epistemic position than, say, hallucinating does, at least in that veridical perception affords knowledge of our environment in a way that hallucination does not. But is there any _further_ epistemic advantage? Some authors have recently argued that veridical perception provides a superior epistemic benefit over hallucination not just concerning knowledge, but concerning justification as well. This contrasts with a traditional view according to which experience provides justification irrespective of whether it’s veridical or hallucinatory. (...) I think both views are mistaken. Although this traditional view should be rejected in favor of one on which _some_ hallucinations are epistemically worse than veridical perceptions (and some are not), I don’t believe there is good reason to think that the mere fact of hallucination—or factivity more generally—has any consequences for justification. Susanna Schellenberg has endorsed both the traditional and the factive views (for different elements or kinds of perceptual justification), and I critique her views in detail, though I also draw out more general epistemological lessons about factivity and evidence. (shrink)

Domestic violence and abuse (DVA) are at last coming to be recognised as serious global public health problems. Nevertheless, many women with personal histories of DVA decline to disclose them to healthcare practitioners. In the health sciences, recent empirical work has identified many factors that impede DVA disclosure, known as barriers to disclosure. Drawing on recent work in social epistemology on testimonial silencing, we might wonder why so many people withhold their testimony and whether there is some kind of epistemic (...) injustice afoot here. In this paper, I offer some philosophical reflections on DVA disclosure in clinical contexts and the associated barriers to disclosure. I argue that women with personal histories of DVA are vulnerable to a certain form of testimonial injustice in clinical contexts, namely, testimonial smothering, and that this may help to explain why they withhold that testimony. It is my contention that this can help explain the low rates of DVA disclosure by patients to healthcare practitioners. (shrink)

Outside of philosophy, ‘intuition’ means something like ‘knowing without knowing how you know’. Intuition in this broad sense is an important epistemological category. I distinguish intuition from perception and perception from perceptual experience, in order to discuss the distinctive psychological and epistemological status of evaluative property attributions. Although it is doubtful that we perceptually experience many evaluative properties and also somewhat unlikely that we perceive many evaluative properties, it is highly plausible that we intuit many instances of evaluative properties as (...) such. The resulting epistemological status of evaluative property attributions is very much like it would be if we literally perceived such properties. (shrink)

La menzogna è irrinunciabile per vincere in politica? Davi ci spiega quali sono i meccanismi di persuasione a cui ricorrono taluni politici per farsi eleggere e quali le responsabilità di quegli elettori che scelgono comunque di votare chi sostiene anche ciò che non può essere vero. È indubbio che la comunicazione politica si rifaccia al simbolismo e al linguaggio delle favole; non necessariamente per occultare la realtà, ma più direttamente per esprimere con maggiore efficacia il suo messaggio. Alle celebri favole (...) di 'Biancaneve', 'Cenerentola', 'Il brutto anatroccolo' sono ricorsi infatti uomini politici del calibro di Berlusconi, Prodi, Nixon, Carter, Mitterrand e partiti quali la Democrazia Cristiana; l'hanno fatto per conquistare voti ma anche per attivare ampi meccanismi di consenso che attingessero direttamente dall'inconscio collettivo. Le conseguenze - ammonisce l'autore - possono essere molto serie, come nel caso dell'attuale politica americana che ha portato la manipolazione e l'inganno a essere riconosciuti come tratti identitari della presidenza di George W. Bush. (shrink)

This book offers solutions to two persistent and I believe closely related problems in epistemology. The first problem is that of drawing a principled distinction between perception and inference: what is the difference between seeing that something is the case and merely believing it on the basis of what we do see? The second problem is that of specifying which beliefs are epistemologically basic (i.e., directly, or noninferentially, justified) and which are not. I argue that what makes a belief a (...) perceptual belief, or a basic belief, is not any introspectible feature of the belief but rather the nature of the cognitive system, or "module", that is causally responsible for the belief. Thus, even zombies, who in the philosophical literature lack conscious experiences altogether, can have basic, justified, perceptual beliefs. -/- The theories of perceptual and basic beliefs developed in the monograph are embedded in a larger reliabilist epistemology. I use this theory of basic beliefs to develop a detailed reliabilist theory: Inferentialist Reliabilism, which offers a reliabilist theory of inferential justification and which solves some longstanding problems for other reliabilist views by demanding inferential support for some—but not all—beliefs. The book is an instance of a thoroughgoingly naturalistic approach to epistemology. Many of my arguments have an empirical basis, and the view that I endorse reserves a central role for the cognitive sciences—in particular, cognitive neuroscience—in filling in the details of an applied epistemological theory. (shrink)

This paper develops a form of moral actualism that can explain the procreative asymmetry. Along the way, it defends and explains the attractive asymmetry: the claim that although an impermissible option can be self-conditionally permissible, a permissible option cannot be self-conditionally impermissible.

In this paper I return to Hubert Dreyfus’ old but influential critique of artificial intelligence, redirecting it towards contemporary predictive processing models of the mind (PP). I focus on Dreyfus’ arguments about the “frame problem” for artificial cognitive systems, and his contrasting account of embodied human skills and expertise. The frame problem presents as a prima facie problem for practical work in AI and robotics, but also for computational views of the mind in general, including for PP. Indeed, some of (...) the issues it presents seem more acute for PP, insofar as it seeks to unify all cognition and intelligence, and aims to do so without admitting any cognitive processes or mechanisms outside of the scope of the theory. I contend, however, that there is an unresolved problem for PP concerning whether it can both explain all cognition and intelligent behavior as minimizing prediction error with just the core formal elements of the PP toolbox, and also adequately comprehend (or explain away) some of the apparent cognitive differences between biological and prediction-based artificial intelligence, notably in regard to establishing relevance and flexible context-switching, precisely the features of interest to Dreyfus’ work on embodied indexicality, habits/skills, and abductive inference. I address several influential philosophical versions of PP, including the work of Jakob Hohwy and Andy Clark, as well as more enactive-oriented interpretations of active inference coming from a broadly Fristonian perspective. (shrink)

Many people profess to believe that acting morally, or as we ought to act, involves the self-conscious acceptance of some (quite specific) constraints or rules that place limits both on the pursuit of our own interests and on our pursuit of the general good. Though these people do not regard the furtherance of our own interests or the pursuit of the general good as ignoble ends, or ones that we are morally required to eschew, they believe that neither can be (...) regarded as providing us with morally sufficient reason to take action. Those who hold such a view believe that there are certain sorts of acts that are wrong in themselves, and thus morally unacceptable means to the pursuit of any ends, even ends that are morally admirable, or morally obligatory. (How strong the prohibition is against performing such acts is a matter that will be taken up later.) Philosophers call such ethical views ‘deontological’ (from the Greek deon , ‘duty’), and contrast them to views that are ‘teleological’ in structure (from telos , Greek for ‘goal’). Those who hold teleological views reject the view that there are special kinds of acts that are right or wrong in themselves. For teleologists, the rightness or wrongness of our acts is determined by a comparative assessment of their consequences. [...] The focus of this essay is on deontological theories. (shrink)

This paper is concerned with the senses in which paintings do and do not depict various temporal phenomena, such as motion, stasis and duration. I begin by explaining the popular – though not uncontroversial – assumption that depiction, as a pictorial form of representation, is a matter of an experiential resemblance between the pictorial representation and that which it is a depiction of. Given this assumption, I illustrate a tension between two plausible claims: that paintings do not depict motion in (...) the sense that video recordings do, and that paintings do not merely depict objects but may depict those objects as engaged in various activities, such as moving. To resolve the tension, I demonstrate that we need to recognise an ambiguity in talk of the appearance of motion, and distinguish between the depiction of motion and the depiction of an object as an object that is moving. Armed with this distinction, I argue that there is an important sense in which paintings depict neither motion, duration, nor – perhaps more controversially – stasis. (shrink)

This philosophical treatise on the foundations of semantics is a systematic effort to clarify, deepen, and defend the classical doctrine that words are conventional signs of mental states, principally thoughts and ideas, and that meaning consists in their expression. This expression theory of meaning is developed by carrying out the Gricean program, explaining what it is for words to have meaning in terms of speaker meaning, and what it is for a speaker to mean something in terms of intention. But (...) Grice's own formulations are rejected and alternatives developed. The foundations of the expression theory are explored at length, and the author develops the theory of thought as a fundamental cognitive phenomenon distinct from belief and desire, argues for the thesis that thoughts have parts, and identifies ideas or concepts with parts of thoughts. This book will appeal to students and professionals interested in the philosophy of language. (shrink)

This paper develops a view on which: (a) all fundamental facts are absolute, (b) some facts do not supervene on the fundamental facts, and (c) only relative facts fail to supervene on the fundamental facts.

I argue that the social dimension of alienation, as discussed by Williams and Railton, has been underappreciated. The lesson typically drawn from their exchange is that moral theory poses a threat to the internal integrity of the agent, but there is a parallel risk that moral theory will implicitly construe agents as constitutively alienated from one another. I argue that a satisfying account of agency will need to make room for what I call ‘genuine ethical contact’ with others, both as (...) concrete objects in the world external to ourselves and as subjects who can recognize us reciprocally. (shrink)

Consequentialists often assume rational monism: the thesis that options are always made rationally permissible by the maximization of the selfsame quantity. This essay argues that consequentialists should reject rational monism and instead accept rational pluralism: the thesis that, on different occasions, options are made rationally permissible by the maximization of different quantities. The essay then develops a systematic form of rational pluralism which, unlike its rivals, is capable of handling both the Newcomb problems that challenge evidential decision theory and the (...) unstable problems that challenge causal decision theory. (shrink)

Introspective evidence is still treated with great suspicion in cognitive science. This work is designed to encourage cognitive scientists to take more account of the subject's unique perspective.

The pioneering work of Johann Winckelmann (1717-1768) identified a homoerotic appreciation of male beauty in classical Greek sculpture, a fascination that had endured in Western art since the Greeks. Yet after Winckelmann, the value (even the possibility) of art's queer beauty was often denied. Several theorists, notably the philosopher Immanuel Kant, broke sexual attraction and aesthetic appreciation into separate or dueling domains. In turn, sexual desire and aesthetic pleasure had to be profoundly rethought by later writers. Whitney Davis follows how (...) such innovative thinkers as John Addington Symonds, Michel Foucault, and Richard Wollheim rejoined these two domains, reclaiming earlier insights about the mutual implication of sexuality and aesthetics. Addressing texts by Arthur Schopenhauer, Charles Darwin, Oscar Wilde, Vernon Lee, and Sigmund Freud, among many others, Davis criticizes modern approaches, such as Kantian idealism, Darwinism, psychoanalysis, and analytic aesthetics, for either reducing aesthetics to a question of sexuality or for removing sexuality from the aesthetic field altogether. Despite these schematic reductions, sexuality always returns to aesthetics, and aesthetic considerations always recur in sexuality. Davis particularly emphasizes the way in which philosophies of art since the late eighteenth century have responded to nonstandard sexuality, especially homoeroticism, and how theories of nonstandard sexuality have drawn on aesthetics in significant ways. Many imaginative and penetrating critics have wrestled productively, though often inconclusively and "against themselves," with the aesthetic making of sexual life and new forms of art made from reconstituted sexualities. Through a critique that confronts history, philosophy, science, psychology, and dominant theories of art and sexuality, Davis challenges privileged types of sexual and aesthetic creation imagined in modern culture-and assumed today. (shrink)

Despite the widespread presence of public arts funding in liberal societies, some liberals find it unjustified. According to the Neutrality Objection, arts funding preferences some ways of life. One way to motivate this challenge is to say that a public goods-styled justification, although it could relieve arts funding of these worries of partiality, cannot be argued for coherently or is, in the end, too susceptible to impressions of partiality. I argue that diversity-based arts funding can overcome this challenge, because it (...) invests in non-excludable infrastructure that fosters cultural literacy. We all have some interest as citizens in living in a society which fosters cultural literacy, seeing as this helps others to understand us, supports us to understand ourselves, and helps alleviate confusion and alienation we feel toward social difference. While some of these benefits can be enjoyed by those who make and consume art, they are also gained by those who don’t, because arts funding affects the makeup of public spaces and the communicative practices we all use to make sense of the world. (shrink)

Michael Davis, a leading figure in the study of professional ethics, offers here both a compelling exploration of engineering ethics and a philosophical analysis of engineering as a profession. After putting engineering in historical perspective, Davis turns to the Challenger space shuttle disaster to consider the complex relationship between engineering ideals and contemporary engineering practice. Here, Davis examines how social organization and technical requirements define how engineers should (and presumably do) think. Later chapters test his analysis of engineering judgement and (...) autonomy empirically, engaging a range of social science research including a study of how engineers and managers work together in ten different companies. (shrink)

François Lamy, a Benedictine monk and Cartesian philosopher whose extensive relations with Arnauld, Bossuet, Fénélon, and Malebranche put him into contact with the intellectual elite of late-seventeenth-century France, authored the very first detailed and explicit refutation of Spinoza’s Ethics in French, Le nouvel athéisme renversé. Regrettably overlooked in the secondary literature on Spinoza, Lamy is an interesting figure in his own right, and his anti-Spinozist work sheds important light on Cartesian assumptions that inform the earliest phase of Spinoza’s critical reception (...) in the seventeenth-century. I begin by presenting Lamy’s life and the contentious state of Spinoza’s French reception in the 1680 and 1690s. I then discuss a central argument in Lamy’s refutation, namely the Cartesian objection that Spinoza’s account of the conceptual independence of attributes is incompatible with the theory of substance monism. Contrasting Lamy’s objection with questions put to Spinoza by de Vries and Tschirnhaus, I maintain that by exhibiting the direction Spinoza’s views on substance and attribute took in maturing we may accurately assess the strength of Spinoza’s position vis-à-vis his Cartesian objector, and I argue that, in fact, Spinoza’s mature account of God as an expressive ens realissimum is not vulnerable to Lamy’s criticism. In conclusion, I turn to Lamy’s objection that Spinoza’s philosophy is question-begging in view of Spinoza’s account of God, and I exhibit what this point of criticism tells us about the intentions of the first French Cartesian rebuttal of the Ethics. (shrink)

One of postmodernism's toughest challenges to Christian thought is its wholesale rejection of metaphysics. This profound book meets the challenge squarely, offering a surer foundation for the idea of being and a new theological perspective of supreme relevance to today's world. In a brilliant turn of postmodern thought itself, Oliver Davies argues for a renewal of metaphysics based on a dynamic new understanding of ontology as narrative and performance. His repairing of the Western metaphysical tradition is grounded both in (...) the divine self-naming in Exodus -- which, for the rabbis, identified God's presence in the world with God's compassionate acts -- and in the compassionate resistance of Etty Hillesum and Edith Stein to the violence of the Holocaust. Building on a new metaphysics of compassion that is attentive to the deepest histories of the contemporary world, Davies offers a renewed systematic theology focused on divine speech and God's compassionate relation to human culture. (shrink)

Emotion, Social Theory, and Social Structure takes sociology in a new direction. It examines key aspects of social structure by using a fresh understanding of emotions categories. Through that synthesis emerge new perspectives on rationality, class structure, social action, conformity, basic rights, and social change. As well as giving an innovative view of social processes, J. M. Barbalet's study also reveals unappreciated aspects of emotions by considering fear, resentment, vengefulness, shame, and confidence in the context of social structure. While much (...) has been written on the social consequences of excessive or pathological emotions, this book demonstrates the centrality of emotions to routine operations of social interaction. Dr Barbalet also re-evaluates the nature of social theory, for once the importance of emotions to social processes becomes clear, the intellectual constitution of sociology, and therefore its history, must be rethought. (shrink)

A theory of customary international law -- Case studies -- A theory of international agreements -- Human rights -- International trade -- A theory of international rhetoric -- International law and moral obligation -- Liberal democracy and cosmopolitan duty.

This paper addresses a problem about epistemic warrant. The problem is posed by philosophical arguments for externalism about the contents of thoughts, and similarly by philosophical arguments for architecturalism about thinking, when these arguments are put together with a thesis of first person authority. In each case, first personal knowledge about our thoughts plus the kind of knowledge that is provided by a philosophical argument seem, together, to open an unacceptably ‘non-empirical’ route to knowledge of empirical facts. Furthermore, this unwelcome (...) prospect of transferring a ‘non-empirical’ warrant from premises about our own mental states and about philosophical theory to a conclusion about external environment or internal architecture seems to depend upon little more than the possibility of knowledge by inference. (The use of the scare-quoted term ‘non-empirical’ is explained a couple of paragraphs further on.). (shrink)

The history of the Frankfurt School cannot be fully told without examining the relationships of Critical Theorists to their Jewish family backgrounds. Jewish matters had significant effects on key figures in the Frankfurt School, including Max Horkheimer, Theodor W. Adorno, Erich Fromm, Leo Lowenthal and Herbert Marcuse. At some points, their Jewish family backgrounds clarify their life paths; at others, these backgrounds help to explain why the leaders of the School stressed the significance of antisemitism. In the post-Second World War (...) era, the differing relationships of Critical Theorists to their Jewish origins illuminate their distinctive stances toward Israel. This book investigates how the Jewish backgrounds of major Critical Theorists, and the ways in which they related to their origins, impacted upon their work, the history of the Frankfurt School, and differences that emerged among them over time. (shrink)