Microbiologists are transitioning from the study and characterization of individual strains or species to the profiling of whole microbiomes and microbial ecology. Equipped with high-throughput methods for studying the taxonomic and functional characteristics of diverse samples, they are just beginning to encounter the conceptual, theoretical, and experimental problems of comparing taxonomy to function, and extracting useful measures from such comparisons. Although still unresolved, these problems are well studied in macro-ecology and are reiterated here as an historical precautionary for microbial ecologists. (...) Beyond expected and unresolved terminological vagueness, we argue that assessments and comparisons of taxonomic and functional profiles in micro-ecology suffer from theoretically unresolvable arbitrariness and ambiguities. We divide these into problems of scale, individuation, and commensurability. We argue that there is no technically/theoretically “correct” scale, individuation, or comparison of taxonomy and function, but there are nonetheless better and worse methodologies for profiling. (shrink)

A growing body of literature critical of ethics review boards has drawn attention to the processes used to determine the ethical merit of research. Citing criticism on the bureaucratic nature of ethics review processes, this literature provides a useful provocation for (re)considering how the ethics review might be enacted. Much of this criticism focuses on how ethics review boards _deliberate,_ with particular attention given to the lack of transparency and opportunities for researcher recourse that characterise ethics review processes. Centered specifically (...) on the conduct of ethics review boards convened within university settings, this paper draws on these inherent criticisms to consider the ways that ethics review boards might enact more communicative and deliberative practices. Outlining a set of principles against which ethics review boards might establish strategies for engaging with researchers and research communities, this paper draws attention to how _Deliberative communication_, _Engagement with researchers_ and the _Distribution of responsibility_ for the ethics review might be enacted in the day-to-day practice of the university human ethics review board. This paper develops these themes via a conceptual lens derived from Habermas’ (The theory of communicative action. Volume 1: Reason and the rationalization of society, 1984 ) articulation of ‘communicative action’ and Fraser’s (Social Text, 25(26), 56–80, 1990 ) consideration of ‘strong publics’ to cast consideration of the role that human ethics review boards might play in supporting university research cultures. _Deliberative communication_, _Engagement with researchers_ and the _Distribution of responsibility_ provide useful conceptual prompts for considering how ethics review boards might undertake their work. (shrink)

In order to improve our understanding of the components that reflect functionally important processes during reward anticipation and consumption, we used principle components analyses (PCA) to separate and quantify averaged ERP data obtained from each stage of a modified monetary incentive delay (MID) task. Although a small number of recent ERP studies have reported that reward and loss cues potentiate ERPs during anticipation, action preparation, and consummatory stages of reward processing, these findings are inconsistent due to temporal and spatial overlap (...) between the relevant electrophysiological components. Our results show three components following cue presentation are sensitive to incentive cues (N1, P3a, P3b). In contrast to previous research, reward‐related enhancement occurred only in the P3b, with earlier components more sensitive to break‐even and loss cues. During feedback anticipation, we observed a lateralized centroparietal negativity that was sensitive to response hand but not cue type. We also show that use of PCA on ERPs reflecting reward consumption successfully separates the reward positivity from the independently modulated feedback‐P3. Last, we observe for the first time a new reward consumption component: a late negativity distributed over the left frontal pole. This component appears to be sensitive to response hand, especially in the context of monetary gain. These results illustrate that the time course and sensitivities of electrophysiological activity that follows incentive cues do not follow a simple heuristic in which reward incentive cues produce enhanced activity at all stages and substages. (shrink)

Would we lie to ourselves? We don't need to. Rather than a single self equipped with a few bivariate processes, the mind is composed of a dissociated aggregation of subselves processing qualitatively different information relevant to different adaptive problems. Each subself selectively processes the information coming in to the brain as well as information previously stored in the brain.

This essay surveys the writings of Walter Rodney, the late Guyanese scholar-activist, in an effort to elicit a distinctive way of thinking politically about underdevelopment. Focusing on a range of primary sources, including a series of unpublished notes and lectures on Marxism and development theory, I consider how Rodney’s engagement with the concrete struggles of Black people informed his appropriation of historical materialism. An avowed “Black Marxist” working at the onset of the neocolonial order, Rodney suggested that collective human development, (...) the historical expansion of productive and social capacity, had become routinely delimited by racially charged political blockages, the effects of a kind of zero-sum game in which development for some was secured only through the active underdevelopment of others. Ultimately I suggest that Rodney’s work invites serious reconsideration of the enduring explanatory power of the Black radical and Marxist legacies, in this case by providing a rich theoretical framework that can help to orient and sustain critical engagement with the elusive racial politics of persistent underdevelopment. (shrink)

_Offers a new perspective on the political significance of the Hegelian dialectical legacy._.

_Offers a new perspective on the political significance of the Hegelian dialectical legacy._.

Strategies to increase influenza vaccination rates have typically targeted healthcare professionals and individuals in various high-risk groups such as the elderly. We argue that they should focus on increasing vaccination rates in children. Because children suffer higher influenza incidence rates than any other demographic group, and are major drivers of seasonal influenza epidemics, we argue that influenza vaccination strategies that serve to increase uptake rates in children are likely to be more effective in reducing influenza-related morbidity and mortality than those (...) targeting HCPs or the elderly. This is true even though influenza-related morbidity and mortality amongst children are low, except in the very young. Further, we argue that there are no decisive reasons to suppose that children-focused strategies are less ethically acceptable than elderly or HCP-focused strategies. (shrink)

Adorno’s critical theory aims to open space for the expression of alternative futures, but its insistence on dialectical reflection encourages at the same time our sustained attentiveness to the psychic and material constraints that may prevent the very possibilities we imagine. In this article, I argue that dialectical reflection signals a location at which transcendental claims enter our thinking and that, for Adorno, such reflection provides a locus for a critically animating interplay between rhetorical figurations of darkness and redemption, or (...) material constraint and alternative possibility. Concerned less with the substance of Adorno’s criticisms than with how his dialectical mode of thinking can be said to shape critical reflection as such, I suggest that Adorno provides a model orientation for democratic engagement in our time and a sobering critical supplement to recent Derridean discourse on radical democracy. (shrink)

An essay on Pietro Pomponazzi, the philosopher and founder of the Aristotelian-Averroistic School. His great work De immortalitate animi, gave rise to a storm of controversy between the orthodox Thomists of the Catholic Church, the Averroists headed by Agostino Nifo, and the so-called Alexandrist School. The treatise was burned at Venice, and Pomponazzi himself ran serious risk of death at the hands of the Catholics. Two pamphlets followed, the Apologia and the Defensorium, wherein he explained his paradoxical position as Catholic (...) and philosophic materialist. His last two treatises, the De incantationibus and the De fato, were posthumously published in an edition of his works printed at Basel. Chapters: Aristotle in the Early Middle Ages; The Arabians and St. Thomas; Pomponazzi as an Aristotelian; Pomponazzi's Psychology; The Soul; Intelligence; Sense; Reason; Knowledge; The Nature of Virtue; and Natural Law in Human Life and Religion. (shrink)

Ethics review processes are frequently perceived as extending from codes and protocols rooted in biomedical disciplines. As a result, many researchers in the humanities and social sciences (HASS) find these processes to be misaligned, if not outrightly obstructive to their research. This leads some scholars to advocate against HASS participation in institutional review processes as they currently stand, or in their entirety. While ethics review processes can present a challenge to HASS researchers, these are not insurmountable and, in fact, present (...) opportunities for ethics review boards (ERBs) to mediate their practices to better attend to the concerns of the HASS disciplines. By highlighting the potential value of the ethics review process in recognising the nuances and specificity across different forms of research, this article explores the generative possibilities of greater collaboration between HASS researchers and ERBs. Remaining cognisant of the epistemic and methodological differences that mark different disciplinary formations in turn will benefit the ethical conduct of all researchers. (shrink)

The human fovea is known for its distinctive pit‐like appearance, which results from the displacement of retinal layers superficial to the photoreceptors cells. The photoreceptors are found at high density within the foveal region but not the surrounding retina. Efforts to elucidate the mechanisms responsible for these unique features have ruled out cell death as an explanation for pit formation and changes in cell proliferation as the cause of increased photoreceptor density. These findings have led to speculation that mechanical forces (...) acting within and on the retina during development underly the formation of foveal architecture. Here we review eye morphogenesis and retinal remodeling in human embryonic development. Our meta‐analysis of the literature suggests that fovea formation is a protracted process involving dynamic changes in ocular shape that start early and continue throughout most of human embryonic development. From these observations, we propose a new model for fovea development. (shrink)

Certification and labeling initiatives that seek to enhance environmental and social sustainability are growing rapidly. This article analyzes the expansion of these private regulatory efforts in the coffee sector. We compare the five major third-party certifications – the Organic, Fair Trade, Rainforest Alliance, Utz Kapeh, and Shade/Bird Friendly initiatives – outlining and contrasting their governance structures, environmental and social standards, and market positions. We argue that certifications that seek to raise ecological and social expectations are likely to be increasingly challenged (...) by those that seek to simply uphold current standards. The vulnerability of these initiatives to market pressures highlights the need for private regulation to work in tandem with public regulation in enhancing social and environmental sustainability. (shrink)

How did the universe begin? What is truth? How can we live good live? The Little Book of Philosophy answers these questions and more. Packed with simple explanations, witty illustrations, and step-by-step diagrams that untangle complex theories, you'll find plenty of food for thought in this book, whether you're a novice, a student, or an armchair philosopher"--Page 4 of cover.

Peter Abelard (1079–1142 ce) was the most wide‐ranging philosopher of the twelfth century. He quickly established himself as a leading teacher of logic in and near Paris shortly after 1100. After his affair with Heloise, and his subsequent castration, Abelard became a monk, but he returned to teaching in the Paris schools until 1140, when his work was condemned by a Church Council at Sens. His logical writings were based around discussion of the “Old Logic”: Porphyry's Isagoge, aristotle'S Categories and (...) On Interpretation and boethius'S textbook on topical inference. They comprise a freestanding Dialectica (“Logic”; probably c.1116), a set of commentaries (known as the Logica [Ingredientibus], c. 1119) and a later (c. 1125) commentary on the Isagoge (Logica Nostrorum Petititoni Sociorum or Glossulae). In a work Abelard called his Theologia, issued in three main versions (between 1120 and c.1134), he attempted a logical analysis of trinitarian relations and explored the philosophical problems surrounding God's claims to omnipotence and omniscience. The Collationes (“Debates,” also known as “Dialogue between a Christian, a Philosopher and a Jew”; probably c.1130) present a rational investigation into the nature of the highest good, in which the Christian and the Philosopher (who seems to be modeled on a philosopher of pagan antiquity) are remarkably in agreement. The unfinished Scito teipsum (“Know thyself,” also known as the “Ethics”; c.1138) analyses moral action. (shrink)

Measuring neuronal activity with electrophysiological methods may be useful in detecting neurological dysfunctions, such as mild traumatic brain injury (mTBI). This approach may be particularly valuable for rapid detection in at-risk populations including military service members and athletes. Electrophysiological methods, such as quantitative electroencephalography (qEEG) and recording event-related potentials (ERPs) may be promising; however, the field is nascent and significant controversy exists on the efficacy and accuracy of the approaches as diagnostic tools. For example, the specific measures derived from an (...) electroencephalogram (EEG) that are most suitable as markers of dysfunction have not been clearly established. A study was conducted to summarize and evaluate the statistical rigor of evidence on the overall utility of qEEG as an mTBI detection tool. The analysis evaluated qEEG measures/parameters that may be most suitable as fieldable diagnostic tools, identified other types of EEG measures and analysis methods of promise, recommended specific measures and analysis methods for further development as mTBI detection tools, identified research gaps in the field, and recommended future research and development thrust areas. The qEEG study group formed the following conclusions: 1. Individual qEEG measures provide limited diagnostic utility for mTBI. However, many measures can be important features of qEEG discriminant functions, which do show significant promise as mTBI detection tools. 2. ERPs offer utility in mTBI detection. In fact, evidence indicates that ERPs can identify abnormalities in cases where EEGs alone are nondisclosing. 3. The standard mathematical procedures used in the characterization of mTBI EEGs should be expanded to incorporate newer methods of analysis including nonlinear dynamical analysis, complexity measures, analysis of causal interactions, graph theory and information dynamics. 4. and 5. are too long to include here. (shrink)

The American Academy of Pediatrics Task Force on Circumcision published its policy statement and technical report on newborn circumcision in September 2012.1 ,2 Since that time, some individuals and groups have voiced objections to the work of the Task Force, while others have conveyed their support. The AAP task force is pleased that the policy statement and technical reports on circumcision have stimulated debate on this topic and welcomes respectful discussion and dialogue about the scientific and ethical issues that surround (...) neonatal circumcision. We believe this is a complex issue that does not lend itself to simplistic solutions. The Task Force encourages those of all viewpoints to contribute to a vibrant, thoughtful and respectful evidence-based dialogue. We appreciate that the free exchange of competing ideas is a necessary component of scientific discovery. We also recognise that all clinical decisions carry ethical dimensions and that a respectful and thoughtful dialogue about these issues is important. However, the Task Force also feels strongly that this debate and the academic literature are demeaned when those with an ideological agenda disseminate inaccurate information, misapply scientific principles, make accusations that are unsupported, communicate in a vitriolic tone, and attempt to discredit and mischaracterise alternative views and those who hold them. Healthy debate and …. (shrink)

In face of the multiple controversies surrounding the DSM process in general and the development of DSM-5 in particular, we have organized a discussion around what we consider six essential questions in further work on the DSM. The six questions involve: 1) the nature of a mental disorder; 2) the definition of mental disorder; 3) the issue of whether, in the current state of psychiatric science, DSM-5 should assume a cautious, conservative posture or an assertive, transformative posture; 4) the role (...) of pragmatic considerations in the construction of DSM-5; 5) the issue of utility of the DSM – whether DSM-III and IV have been designed more for clinicians or researchers, and how this conflict should be dealt with in the new manual; and 6) the possibility and advisability, given all the problems with DSM-III and IV, of designing a different diagnostic system. Part 1 of this article took up the first two questions. Part 2 took up the second two questions. Part 3 now deals with Questions 5 & 6. Question 5 confronts the issue of utility, whether the manual design of DSM-III and IV favors clinicians or researchers, and what that means for DSM-5. Our final question, Question 6, takes up a concluding issue, whether the acknowledged problems with the earlier DSMs warrants a significant overhaul of DSM-5 and future manuals. As in Parts 1 & 2 of this article, the general introduction, as well as the introductions and conclusions for the specific questions, are written by James Phillips, and the responses to commentaries are written by Allen Frances. (shrink)

In the conclusion to this multi-part article I first review the discussions carried out around the six essential questions in psychiatric diagnosis – the position taken by Allen Frances on each question, the commentaries on the respective question along with Frances’ responses to the commentaries, and my own view of the multiple discussions. In this review I emphasize that the core question is the first – what is the nature of psychiatric illness – and that in some manner all further (...) questions follow from the first. Following this review I attempt to move the discussion forward, addressing the first question from the perspectives of natural kind analysis and complexity analysis. This reflection leads toward a view of psychiatric disorders – and future nosologies – as far more complex and uncertain than we have imagined. (shrink)

In face of the multiple controversies surrounding the DSM process in general and the development of DSM-5 in particular, we have organized a discussion around what we consider six essential questions in further work on the DSM. The six questions involve: 1) the nature of a mental disorder; 2) the definition of mental disorder; 3) the issue of whether, in the current state of psychiatric science, DSM-5 should assume a cautious, conservative posture or an assertive, transformative posture; 4) the role (...) of pragmatic considerations in the construction of DSM-5; 5) the issue of utility of the DSM - whether DSM-III and IV have been designed more for clinicians or researchers, and how this conflict should be dealt with in the new manual; and 6) the possibility and advisability, given all the problems with DSM-III and IV, of designing a different diagnostic system. Part I of this article will take up the first two questions. With the first question, invited commentators express a range of opinion regarding the nature of psychiatric disorders, loosely divided into a realist position that the diagnostic categories represent real diseases that we can accurately name and know with our perceptual abilities, a middle, nominalist position that psychiatric disorders do exist in the real world but that our diagnostic categories are constructs that may or may not accurately represent the disorders out there, and finally a purely constructivist position that the diagnostic categories are simply constructs with no evidence of psychiatric disorders in the real world. The second question again offers a range of opinion as to how we should define a mental or psychiatric disorder, including the possibility that we should not try to formulate a definition. The general introduction, as well as the introductions and conclusions for the specific questions, are written by James Phillips, and the responses to commentaries are written by Allen Frances. (shrink)

Executive function is essential to child development, with associated skills beginning to emerge in the first few years of life and continuing to develop into adolescence and adulthood. The prefrontal cortex, which follows a neurodevelopmental timeline similar to EF, plays an important role in the development of EF. However, limited research has examined prefrontal function in young children due to limitations of currently available neuroimaging techniques such as functional resonance magnetic imaging. The current study developed and applied a multimodal Go/NoGo (...) task to examine the EF component of inhibitory control in children 4–10 years of age. Cortical activity was measured using a non-invasive and child-friendly neuroimaging technique – functional near-infrared spectroscopy. Children’s response accuracy and reaction times were captured during the fNIRS session and compared with responses obtained using the standardized assessments from NIH Toolbox cognition battery. Results showed significant correlations between the behavioral measures during the fNIRS session and the standardized EF assessments, in line with our expectations. Results from fNIRS measures demonstrated a significant, age-independent effect of inhibitory control in the right PFC, and an age-dependent effect in the left orbitofrontal cortex, consistent with results in previous studies using fNIRS and fMRI. Thus, the new task designed for fNIRS was suitable for examining IC in young children, and results showed that fNIRS measures can reveal prefrontal IC function. (shrink)

In face of the multiple controversies surrounding the DSM process in general and the development of DSM-5 in particular, we have organized a discussion around what we consider six essential questions in further work on the DSM. The six questions involve: 1) the nature of a mental disorder; 2) the definition of mental disorder; 3) the issue of whether, in the current state of psychiatric science, DSM-5 should assume a cautious, conservative posture or an assertive, transformative posture; 4) the role (...) of pragmatic considerations in the construction of DSM-5; 5) the issue of utility of the DSM - whether DSM-III and IV have been designed more for clinicians or researchers, and how this conflict should be dealt with in the new manual; and 6) the possibility and advisability, given all the problems with DSM-III and IV, of designing a different diagnostic system. Part I of this article took up the first two questions. Part II will take up the second two questions. Question 3 deals with the question as to whether DSM-V should assume a conservative or assertive posture in making changes from DSM-IV. That question in turn breaks down into discussion of diagnoses that depend on, and aim toward, empirical, scientific validation, and diagnoses that are more value-laden and less amenable to scientific validation. Question 4 takes up the role of pragmatic consideration in a psychiatric nosology, whether the purely empirical considerations need to be tempered by considerations of practical consequence. As in Part 1 of this article, the general introduction, as well as the introductions and conclusions for the specific questions, are written by James Phillips, and the responses to commentaries are written by Allen Frances. (shrink)

Douglas Walton’s multitudinous contributions to the study of argumentation seldom, if ever, directly engage with argumentation in mathematics. Nonetheless, several of the innovations with which he is most closely associated lend themselves to improving our understanding of mathematical arguments. I concentrate on two such innovations: dialogue types (§1) and argumentation schemes (§2). I argue that both devices are much more applicable to mathematical reasoning than may be commonly supposed.

Douglas Hartree and Hilleth Thomas were graduate students together at Cambridge University in the mid-1920s. Each developed an important approximation method to calculate the electronic structure of atoms. Each went on to make significant contributions to numerical analysis and to the development of scientific computing. Their early efforts were fused in the mid-1960s with the development of an approach to the many-particle problem in quantum mechanics called density functional theory. This paper discusses the experiences which led Hartree and Thomas (...) to their approximations, outlines the similarities in their subsequent careers, and highlights the essential role their work played in the foundational papers of modern density functional theory. (shrink)

Informal logic is a method of argument analysis which is complementary to that of formal logic, providing for the pragmatic treatment of features of argumentation which cannot be reduced to logical form. The central claim of this paper is that a more nuanced understanding of mathematical proof and discovery may be achieved by paying attention to the aspects of mathematical argumentation which can be captured by informal, rather than formal, logic. Two accounts of argumentation are considered: the pioneering work of (...) Stephen Toulmin [The uses of argument, Cambridge University Press, 1958] and the more recent studies of Douglas Walton, [e.g. The new dialectic: Conversational contexts of argument, University of Toronto Press, 1998]. The focus of both of these approaches has largely been restricted to natural language argumentation. However, Walton’s method in particular provides a fruitful analysis of mathematical proof. He offers a contextual account of argumentational strategies, distinguishing a variety of different types of dialogue in which arguments may occur. This analysis represents many different fallacious or otherwise illicit arguments as the deployment of strategies which are sometimes admissible in contexts in which they are inadmissible. I argue that mathematical proofs are deployed in a greater variety of types of dialogue than has commonly been assumed. I proceed to show that many of the important philosophical and pedagogical problems of mathematical proof arise from a failure to make explicit the type of dialogue in which the proof is introduced. (shrink)

Andrew Feenberg's Questioning Technology (1999) is his third book in a series of studies which undertake to provide critical theoretical and democratic political perspectives to engage technology in the contemporary era. In Critical Theory of Technology (1991), Feenberg draws on neo-Marxian and other critical theories of technology, especially the Frankfurt School, to criticize determinist and essentialist theories. In this ground-breaking work (which will go into its second edition in 2001), he discusses both how the labor process, science, and technology (...) are constituted as forms of domination of nature and human beings, and how they could be democratically transformed as part of a program of radical social transformation. In Alternative Modernity (1995), Feenberg turns to focus on constructivist theories and the ways in which individuals and groups can reconstruct technology to make it serve more humane and democratic goals. His most recent book draws on his earlier work while polemically developing his own positions within contemporary debates over technology. (shrink)

It is to misunderstand the nature of moral reasoning to suppose, As does andrew oldenquist in his "universalizability and nondescriptivism" (the journal of philosophy. Xlv, 3, Feb. 8, 1968, Pp. 57-79), That a distinction obtains between moral judgements and moral principles to the effect that a moral judgement requires supportability by reasons as a necessary condition, Whereas a moral principle is exempt from this condition. Four arguments are given against the view that there can be a sort of moral (...) statement, Here called a "moral principle," that is exempt from the requirement of supportability. (shrink)

Herbert Marcuse examined the subjective and material conditions of radical social change and developed the "Great Refusal," a radical concept of "the protest against that which is." The editors and contributors to the exciting new volume The Great Refusal provide an analysis of contemporary social movements around the world with particular reference to Marcuse's revolutionary concept. The book also engages-and puts Marcuse in critical dialogue with-major theorists including Slavoj Žižek and Michel Foucault, among others. The chapters in this book analyze (...) different elements and locations of the contemporary wave of struggle, drawing on the work and vision of Marcuse in order to reveal, with a historical perspective, the present moment of resistance. Essays seek to understand recent uprisings-such as the Zapatistas in Mexico, the Arab Spring, and the Occupy movement-in the context of Marcuse's powerful conceptual apparatus. The Great Refusal also charts contemporary social movements against global warming, mass incarceration, police brutality, white supremacy, militarization, technological development, and more, to provide insights that advance our understanding of resistance today. Contributors include: Kevin B. Anderson, Stanley Aronowitz, Joan Braune, Jenny Chan, Angela Y. Davis, Arnold L. Farr, Andrew Feenberg, Michael Forman, Christian Fuchs, Stefan Gandler, Christian Garland, Toorjo Ghose, Imaculada Kangussu, George Katsiaficas, Douglas Kellner, Sarah Lynn Kleeb, Filip Kovacevic, Lauren Langman, Heather Love, Peter Marcuse, Martin J. Beck Matuštík, Russell Rockwell, AK Thompson, Marcelo Vieta, and the editors. (shrink)

Edited by Douglas Kellner and Clayton Pierce, _Philosophy, Psychoanalysis and Emancipation _is the fifth volume of Herbert Marcuse's collected papers. Containing some of Marcuse’s most important work, this book presents for the first time his unique syntheses of philosophy, psychoanalysis, and critical social theory, directed toward human emancipation and social transformation. Within philosophy, Marcuse engaged with disparate and often conflicting philosophical perspectives - ranging from Heidegger and phenomenology, to Hegel, Marx, and Freud - to create unique philosophical insights, often (...) overlooked in favor of his theoretical and political interventions with the New Left, the subject of previous volumes. This collection assembles significant, and in some cases unknown texts from the Herbert Marcuse archives in Frankfurt, including: critiques of positivism and idealism, Dewey’s pragmatism, and the tradition of German philosophy philosophical essays from the 1930s and 1940s that attempt to reconstruct philosophy on a materialist base Marcuse’s unique attempts to bring together Freud and philosophy philosophical reflections on death, human aggression, war, and peace Marcuse’s later critical philosophical perspectives on science, technology, society, religion, and ecology. A comprehensive introduction by Douglas Kellner, Tyson Lewis and Clayton Pierce places Marcuse’s work in the context of his engagement with the main currents of twentieth century politics and philosophy. An Afterword by Andrew Feenberg provides a personal memory of Marcuse as scholar, teacher and activist, and summarizes the lasting relevance of his radical thought. (shrink)