This monograph is a detailed comparison of the two published forms of Wittgenstein’s "Notes on Logic": the so-called Russell and Costello Versions. It also includes complete transcriptions of the two related typescripts and one manuscript in the collection of The Bertrand Russell Archives at McMaster University, and a transcription of a photocopy of a related typescript in the collection of The Wittgenstein Archives at the University of Bergen, hitherto unpublished in their original form. From these comparisons, the majority of McGuinness’ (...) description of the sequence of the production of the typescripts is confirmed. However, additional source material in the sequence is inferred. On the basis of the proposed identification of the Bergen typescript as the copy made by D. Schwayder, it is concluded that McGuinness was mistaken in asserting that the Costello Version was a rearrangement from this copy. Finally, it is proposed that the von Wright catalogue of Wittgenstein’s Nachlaß is misleading inasmuch as it gives a single reference to a pair of scripts generated at different times. In response, three Nachlaß items are differentiated within the classification for the Russell Version (catalogue item 201a). In support of the argument the monograph is supplemented by a phrase by phrase comparison of the Russell and Costello Versions, a list of phrases which are not common to both, and a detailed comparison of the various published issues including comments on the diagrams. (shrink)

This paper investigates the role of visual experience in Wittgenstein's work. The specific thesis is that visual experience provides not only diverse illustrative examples of what could be an explanation of meaning, but that it also provides a recurrent metaphor for the whole process of meaning and understanding. Wittgenstein uses a great number of visual examples in his texts. Their diversity may be accounted for by the great diversity of ways in which he attempts to describe the relationship between a (...) word and its meaning. The resultant variety of visual examples may be summarised by what I call the Visual Discontinuity Thesis. However, beneath this diversity there lies a thread of continuity. This is provided by the persistent use of visual experience in the description of the word-meaning relation. This use underlies the projection relationship of the Tractatus and the "seeing-as" relationship of the Investigations. This recurrent visual metaphor may be summarised by what I call the Visual Continuity Thesis. This paper presents the latter thesis in the context of a description of the former. (shrink)

Management theory and practice are facing unprecedented challenges. The lack of sustainability, the increasing inequity, and the continuous decline in societal trust pose a threat to ‘business as usual’. Capitalism is at a crossroad and scholars, practitioners, and policy makers are called to rethink business strategy in light of major external changes. In the following, we review an alternative view of human beings that is based on a renewed Darwinian theory developed by Lawrence and Nohria. We label this alternative view (...) ‘humanistic’ and draw distinctions to current ‘economistic’ conceptions. We then develop the consequences that this humanistic view has for business organizations, examining business strategy, governance structures, leadership forms, and organizational culture. Afterward, we outline the influences of humanism on management in the past and the present, and suggest options for humanism to shape the future of management. In this manner, we will contribute to the discussion of alternative management paradigms that help solve the current crises. (shrink)

This is a description of an avian-shaped feature that rests below a network of cellular structures found on a mound within the Argyre Basin of Mars in Mars Global Surveyor image M14-02185, acquired on April 30, 2000, and released to the public on April 4, 2001. The area examined is located near 48.0° South, 55.1° West. The formation is approximately 2,400 meters long from the tip of its beak to the tip of its farthest tail feather. There is a minimum (...) of six different variations in appearance of the surface material over this small area. Utilizing the public targeting request form provided on the Mars Global Surveyor (MGS) website, co-author Miller secured a second image of the area that was obtained on July 3, 2006, showing this feature under different conditions S20-00165. The new image was then released to the public on August 11, 2006. A third image of the formation identified as MGS S13-01480 was acquired on December 15, 2005, and although officially processed on June 20, 2006, it was not made available to the public until August 22, 2009, on NASA’s Planetary Data System (PDS) website. All three of the MGS images reveal defining aspects of this avian feature, including a head, beak, body, eye, leg, foot, toes, wing, and feathers. When taken together, these components induce the visual impression of an avian-shaped formation that exhibits a unique set of proportional features. Adjoining this formation is a composite of complex cellular features that form a compartmentalized infrastructure. The three authors who are veterinarians provide a critical analysis of the avian features, and the geologist and geoscientist authors examine natural mechanisms that could contribute to the formation of this feature. An extensive search of comparable regions within and beyond the area of the Argyre Basin was conducted. A list of these sites is provided, and terrestrial comparisons are also offered. (shrink)

First published in 1976, the _Dictionary of Philosophy_ has established itself as the best available text of its kind, explaining often unfamiliar, complicated and diverse terminology. Thoroughly revised and expanded, this fourth edition provides authoritative and rigorous definitions of a broad range of philosophical concepts. Concentrating on the Western philosophical tradition,_ The Routledge Dictionary of Philosophy_ offers an illuminating and informed introduction to the central issues, ideas and perspectives in core fields such as metaphysics, epistemology, and logic. It includes concise (...) biographical entries for more than one hundred major philosophers, from Plato and Aristotle through to contemporary figures such as Dummett, McDowell, Parfit and Singer. All major entries are followed by helpful suggestions for further reading, including web links, and contain extensive cross-referencing to aid access and comprehension. This edition also features a brand new guide to the most useful philosophy sites on the internet. _The Routledge Dictionary of Philosophy_ is an invaluable and up-to-date resource for all students of philosophy. (shrink)

Volume 19, Issue 5, May 2019, Page 43-45.

In the debate between simple inference heuristics and complex decision mechanisms, we take a position squarely in the middle. A decision making process that extends to both naturalistic and novel settings should extend beyond the confines of this debate; both simple heuristics and complex mechanisms are cognitive skills adapted to and appropriate for some circumstances but not for others. Rather than ask `Which skill is better?'' it is often more important to ask `When is a skill justified?'' The selection and (...) application of an appropriate cognitive skill for a particular problem has both costs and benefits, and therefore requires the resolution of a tradeoff. In revisiting satisficing, we observe that the essence of satisficing is tradeoff. Unlike heuristics, which derive their justification from empirical phenomena, and unlike optimal solutions, which derive their justification by an evaluation of alternatives, satisficing decision-making derives its justification by an evaluation of consequences. We formulate and present a satisficing decision paradigm that has its motivation in Herbert Simon''s work on bounded rationality. We characterize satisficing using a cost–benefit tradeoff, and generate a decision rule applicable to both designing intelligent machines as well as describing human behavior. (shrink)

: Research involving the dead, especially heart-beating cadavers, may facilitate the testing of potentially revolutionary and life-saving medical treatments. However, to ensure that such research is conducted ethically, it is essential to: (1) identify appropriate standards for this research and (2) assign institutional responsibility and a mechanism for oversight. Protocols for research involving the dead should be reviewed by a special committee and assessed according to nine standards intended to ensure scientific merit, to protect deceased patients and their families, and (...) to promote institutional integrity and responsibility. Federal regulation of research involving the dead will foster appropriate standards and, equally importantly, help establish the acceptability of such research. (shrink)

Purpose: to characterize ethics course content, structure, resources, pedagogic methods, and opinions among academic administrators and course directors at U.S. medical schools. Method: An online questionnaire addressed to academic deans and ethics course directors identified by medical school websites was emailed to 157 Association of American Medical Colleges member medical schools in two successive waves in early 2022. Descriptive statistics were utilized to summarize responses. Results: Representatives from 61 (39%) schools responded. Thirty-two (52%) respondents were course directors; 26 (43%) were (...) deans of academic affairs, medical education, or curriculum; and 3 with other roles also completed the survey (5%). All 61 schools reported some form of formal ethics education during the first year of medical school, with most (n = 54, 89%) reporting a formal mandatory introductory course during preclinical education. Schools primarily utilized lecture and small-group teaching methods. Knowledge-based examinations, attendance, and participation were most commonly used for assessment. A large majority regarded ethics as equally or more important than other foundational courses, but fewer (n = 37, 60%) provided faculty training for teaching ethics. Conclusions: Despite a response rate of 39 percent, the authors conclude that medical schools include ethics in their curricula in small-group and lecture formats with heterogeneity regarding content taught. Preclinical curricular redesigns must innovate and implement best practices for ensuring sound delivery of ethics content in future curricula. Additional large-scale research is necessary to determine said best practices. (shrink)

While somatic cell editing to treat disease is widely accepted, the use of human genome editing for “enhancement” remains contested. Scientists and policy-makers routinely cite the prospect of enhancement as a salient ethical challenge for human genome editing research. If preventive genome editing projects are perceived as pursuing human enhancement, they could face heightened barriers to scientific, public, and regulatory approval. This article outlines what we call “preventive strengthening research” (or “PSR”) to explore, through this example, how working to strengthen (...) individuals’ resistance to disease beyond what biomedicine considers to be the human functional range may be interpreted as pursuing human enhancement. Those involved in developing guidance for PSR will need to navigate the interface between preventive goals and enhancement implications. This article identifies and critiques three of these ideas in the interest of anticipating the wider emergence of PSR and the need for a normative approach for its pursuit. All three “candidate criteria” merit attention, but each also faces challenges that will need to be addressed as further research policy is developed. (shrink)

PurposeTo use the power of knowledge acquisition and machine learning in the development of a collaborative computer classification system based on the features of age-related macular degeneration (AMD).MethodsA vocabulary was acquired from four AMD experts who examined 100 ophthalmoscopic images. The vocabulary was analyzed, hierarchically structured, and incorporated into a collaborative computer classification system called IDOCS. Using this system, three of the experts examined images from a second set of digital images compiled from more than 1000 patients with AMD. Images (...) were annotated, and features were identified and defined. Decision trees, a machine learning method, were trained on the data collected and used to extract patterns. Interrelationships between the data from the different clinicians were investigated.ResultsSix drusen classes in the structured vocabulary were largely sufficient to describe all the identified features. The decision trees classified the data with 76.86% to 88.5% accuracy and distilled patterns in the form of hierarchical trees composed of 5 to 15 nodes. Experts were largely consistent in their characterization of soft, and to a lesser extent, hard drusen, but diverge in definition of other drusen. Size and crystalline morphology were the main determinants of drusen type across all experts.ConclusionsMachine learning is a powerful tool for the characterization of disease phenotypes. The creation of a defined feature set for AMD will facilitate the development of an IDOCS-based classification system. (shrink)

Peer review is a widely accepted instrument for raising the quality of science. Peer review limits the enormous unstructured influx of information and the sheer amount of dubious data, which in its absence would plunge science into chaos. In particular, peer review offers the benefit of eliminating papers that suffer from poor craftsmanship or methodological shortcomings, especially in the experimental sciences. However, we believe that peer review is not always appropriate for the evaluation of controversial hypothetical science. We argue that (...) the process of peer review can be prone to bias towards ideas that affirm the prior convictions of reviewers and against innovation and radical new ideas. Innovative hypotheses are thus highly vulnerable to being “filtered out” or made to accord with conventional wisdom by the peer review process. Consequently, having introduced peer review, the Elsevier journal Medical Hypotheses may be unable to continue its tradition as a radical journal allowing discussion of improbable or unconventional ideas. Hence we conclude by asking the publisher to consider re-introducing the system of editorial review to Medical Hypotheses. (shrink)

Ethics position theory (EPT) maintains that individuals’ personal moral philosophies influence their judgments, actions, and emotions in ethically intense situations. The theory, when describing these moral viewpoints, stresses two dimensions: idealism (concern for benign outcomes) and relativism (skepticism with regards to inviolate moral principles). Variations in idealism and relativism across countries were examined via a meta-analysis of studies that assessed these two aspects of moral thought using the ethics position questionnaire (EPQ; Forsyth, Journal of Personality and Social Psychology39, 175–184, 1980). (...) This review identified 139 samples drawn from 29 different countries, for a total sample of 30,230 respondents, and concluded that (a) levels of idealism and relativism vary across regions of the world in predictable ways; (b) an exceptionist ethic is more common in Western countries, subjectivism and situationism in Eastern countries, and absolutism and situationism in Middle Eastern countries; and (c) a nation’s ethics position predicted that country’s location on previously documented cultural dimensions, such as individualism and avoidance of uncertainty (Hofstede, Culture’s Consequences: International Differences in Work-Related Values, 1980). Limitations in these methods and concerns about the validity of these cross-cultural conclusions are noted, as are suggestions for further research using the EPQ. (shrink)

The terms ‘knowledge economy’ and ‘knowledge capitalism’ have been used with increasing frequency since the 1990s as a way of describing the latest phase of capitalism in in the process of global r...

The rise of precision medicine has led to an unprecedented focus on human biological material in biomedical research. In addition, rapid advances in stem cell technology, regenerative medicine and synthetic biology are leading to more complex human tissue structures and new applications with tremendous potential for medicine. While promising, these developments also raise several ethical and practical challenges which have been the subject of extensive academic debate. These debates have led to increasing calls for longitudinal governance arrangements between tissue providers (...) and biobanks that go beyond the initial moment of obtaining consent, such as closer involvement of tissue providers in what happens to their tissue, and more active participatory approaches to the governance of biobanks. However, in spite of these calls, such measures are being adopted slowly in practice, and there remains a strong tendency to focus on the consent procedure as the tool for addressing the ethical challenges of contemporary biobanking. In this paper, we argue that one of the barriers to this transition is the dominant language pervading the field of human tissue research, in which the provision of tissue is phrased as a ‘donation’ or ‘gift’, and tissue providers are referred to as ‘donors’. Because of the performative qualities of language, the effect of using ‘donation’ and ‘donor’ shapes a professional culture in which biobank participants are perceived as passive providers of tissue free from further considerations or entitlements. This hampers the kind of participatory approaches to governance that are deemed necessary to adequately address the ethical challenges currently faced in human tissue research. Rather than reinforcing this idea through language, we need to pave the way for the kind of participatory approaches to governance that are being extensively argued for by starting with the appropriate terminology. (shrink)

Tableau formulations are given for the relevance logics E (Entailment), R (Relevant implication) and RM (Mingle). Proofs of equivalence to modus-ponens-based formulations are vialeft-handed Gentzen sequenzen-kalküle. The tableau formulations depend on a detailed analysis of the structure of tableau rules, leading to certain global requirements. Relevance is caught by the requirement that each node must be used; modality is caught by the requirement that only certain rules can cross a barrier. Open problems are discussed.

Precision medicine research involving human biological material is becoming an increasingly central component of healthcare, and its potential is quickly growing due to rapid technological progress...

Positions in dialogic dispute are presented enthymematically. It is important to explore the position the disputant holds. A model is offered which relies on the presentation of a counter-example to an inferred missing premiss. The example may be: [A+J embraced as falling under the rule; [A-] rejected as basically changing the position; or, [R] rejected as changing the proffered missing premiss. In each case the offered model indicates the next appropriate action. The focus of the model is on uncovering the (...) position actually held by the disputant as opposed to identifying the "logically correct" enthymematic premiss. (shrink)

A deep investigation of proprioceptive processes is necessary to understand the relationship between sensory afferent inputs and motor outcomes. In this work, we investigate whether and how perception of wrist position is influenced by the direction along which the movement occurs. Most previous studies have tested Joint Position Sense through 1 degree of freedom wrist movements, such as flexion/extension or radial/ulnar deviation. However, the wrist joint has 3-DoF and many activities of daily living produce combined movements, requiring at least 2-DoF (...) wrist coordination. For this reason, in this study, target positions involved movement directions that combined wrist flexion or extension with radial or ulnar deviation. The chosen task was a robot-aided Joint Position Matching, in which blindfolded participants actively reproduced a previously passively assumed target joint configuration. The JPM performance of 20 healthy participants was quantified through measures of accuracy and precision, in terms of both perceived target direction and distance along each direction of movement. Twelve different directions of movement were selected and both hands tested. The left and right hand led to comparable results, both target extents and directions were differently perceived according to the target direction on the FE/RUD space. Moreover, during 2-DoF combined movements, subjects’ perception of directions was impaired when compared to 1-DoF target movements. In summary, our results showed that human perception of wrist position on the FE/RUD space is symmetric between hands but not isotropic among movement directions. (shrink)

This remarkable collection of period photographs details day-to-day life and changing times in the Deep South. Draffus Lamar Hightower, 1899-1993, spent most of his life in Barbour County, Alabama. For many years he was the owner of a Chevrolet dealership, but he had another occupation as well. From his youth, he was fascinated with photography, and for fifty years he experimented with the craft both technically and artistically. Hightower, while participating fully in the 20th century, was also acutely aware of (...) the passing of the heritage of the last one. From the early 1920s to the late 1960s, he made thousands of negatives of people, events, landscapes, objects, and buildings in Barbour County. His photographs are reminiscent of the documentary work of Walker Evans, Berenice Abbott, and other great 20th-century American photographers. Hightower created an incredibly complete and vivid record of the life of a rural Alabama county during a period of profound change-documenting everything from birthday parties and political rallies to farm scenes and the demolition of historic buildings so that future generations would not forget the world of their forebears. In 1990, Michael Thomason, historian and photographic archivist, began the long process of reviewing Hightower's collection of photographs, interviewing family and friends, and salvaging and printing the negatives, which by that time had begun to deteriorate. Thomason restored and printed 195 photographs and prepared accompanying essays that not only reveal the technical details of Hightower's labor of love but also tell the story of the human and economic changes in Barbour County during this period. (shrink)

Heritable human genome editing has garnered significant attention in scholarly and lay media, yet questions remain about whether, when, and how heritable genome editing ought to proceed. Drawing on interviews with scientists who use genome editing in their research and professionals engaged in human genome editing governance efforts, we examine their views on the permissibility of heritable genome editing and the governance strategies they see as necessary and realistic. For both issues, we found divergent views from respondents. We place the (...) views of these scientists and governance professionals within the context of the larger bioethical discussion of heritable genome editing governance, along a continuum of hard to soft approaches. These respondents’ views highlight the challenges of various hard forms of governance and the potential virtues of soft governance approaches. (shrink)

We introduce new leader humility scales capturing a theoretically rich conceptualization of leader-expressed humility aligned with traditional and ethically-grounded philosophies. These scales draw from recent inductive research (Oc et al., 2015) identifying nine dimensions of leader-expressed humility: (1) having an accurate view of self, (2) recognizing follower strengths and achievements, (3) modeling teachability and being correctable, (4) leading by example, (5) showing modesty, (6) working together for the collective good, (7) empathy and approachability, (8) showing mutual respect and fairness, and (...) (9) mentoring and coaching. The first three dimensions overlap with the most prominent conceptualization of leader-expressed humility in the literature (i.e., Owens et al., 2013). However, the latter six dimensions are unique and represent an expanded understanding of the humble behaviors of leaders, which have implications for leaders and their ethical behavior in organizations. We conducted three studies resulting in two versions of the leader-expressed humility measure: 1) a 27-item scale with the nine dimensions (i.e., the “Leader-Expressed Humility” [LEH] scale) and 2) a 9-item brief scale (i.e., the “Brief LEH” scale) comprised of one item from each of the nine dimensions. As an initial step, we generated a pool of items that reflected each dimension. Next, we validated the LEH and Brief LEH scales in Study 1 and cross-validated the Brief LEH scale in Study 2 with two samples of subordinates in Singapore. As a final step, in Study 3, we cross-validated the Brief LEH scale with a sample of subordinates in the United States. (shrink)

We employ techniques related to Lempp and Lerman's “iterated trees of strategies” to directly measure a Σ5-predicate and use this in showing the index set of the cuppable r.e. sets to be Σ5-complete. We also show how certain technical devices arise naturally out of the iterated-trees context, in particular, links arise as manifestations of a generalized notion of “stage”.

The earlier volume in this series dealt with two religions of Indian origin, namely, Buddhism and Jainism. The Indian religious scene, however, is characterized by not only religions which originated in India but also by religions which entered India from outside India and made their home here. Thus religious life in India has been enlivened throughout its history by the presence of religions of foreign origin on its soil almost from the very time they came into existence. This volume covers (...) three such religions—Zoraoastrianism, Judaism, and Islam. In the case of Zoraostianism, even its very beginnings are intertwined with India, as Zoroastrianism reformed a preexisting religion which had strong links to the Vedic heritage of India. This relationship took on a new dimension when a Zoroastrian community, fearing persecution in Persia after its Arab conquest, sought shelter in western India and ultimately went on to produce India’s pioneering nationalist in the figure of Dadabhai Naoroji ( 1825-1917), also known as the Grand Old Man of India. Jews found refuge in south India after the destruction of the Temple by the Romans in 70 C.E. and have remained a part of the Indian religious scene since then, some even returning to Israel after it was founded in 1948. Islam arrived in Kerala as soon as it was founded and one of the earliest mosques in the history of Islam is found in India. Islam differs from the previously mentioned religions inasmuch as it went on to gain political hegemony over parts of the country for considerable periods of time, which meant that its impact on the religious life of the subcontinent has been greater compared to the other religions. It has also meant that Islam has existed in a religiously plural environment in India for a longer period than elsewhere in the world so that not only has Islam left a mark on India, India has also left its mark on it. Indeed all the three religions covered in this volume share this dual feature, that they have profoundly influenced Indian religious life and have also in turn been profoundly influenced by their presence in India. (shrink)

The generality problem is widely considered to be a devastating objection to reliabilist theories of justification. My goal in this paper is to argue that a version of the generality problem applies to all plausible theories of justification. Assume that any plausible theory must allow for the possibility of reflective justification—S's belief, B, is justified on the basis of S's knowledge that she arrived at B as a result of a highly (but not perfectly) reliable way of reasoning, R. The (...) generality problem applies to all cases of reflective justification: Given that is the product of a process-token that is an instance of indefinitely many belief-forming process-types (or BFPTs), why is the reliability of R, rather than the reliability of one of the indefinitely many other BFPTs, relevant to B's justificatory status? This form of the generality problem is restricted because it applies only to cases of reflective justification. But unless it is solved, the generality problem haunts all plausible theories of justification, not just reliabilist ones. (shrink)

Anna J Dare,1 Anthony RJ Phillips,1–3 Michael Chu,1 Anthony JR Hickey,2 Adam SJR Bartlett1–31Department of Surgery, 2Maurice Wilkins Centre for Biodiscovery, University of Auckland, Auckland, New Zealand; 3New Zealand Liver Transplant Unit, Auckland City Hospital, Auckland, New ZealandBackground: Hepatic steatosis is increasingly encountered among organ donors. Currently, there is no consensus guideline as to the type or degree of donor steatosis considered acceptable for liver transplantation, and little is known about local practices in this area. The aim of this (...) survey was to evaluate current clinical practices amongst liver transplant surgeons in Australia and New Zealand in the evaluation and use of steatotic donor livers in LT.Methods: An anonymous online twelve-question survey was emailed to all practicing LT surgeons in ANZ in January 2010.Results: The response rate was 83%. Estimated prevalence of steatosis in donor livers was between 40% and 60%. In determining suitability for LT, 90% of respondents reported rejecting organs with "severe" steatosis based on visual and palpation grounds alone. A total of 68% sought further histological assessment if the donor liver looked bad and there were risk factors for steatosis. The majority of respondents performed only one biopsy of the liver, using hematoxylin and eosin staining for fat assessment. There was wide variation in the upper limit of steatosis considered to be acceptable for LT. A total of 21% of respondents still considered microvesicular steatosis a risk factor for primary graft nonfunction.Conclusion: This survey highlights the significant variation in the appraisal and use of steatotic grafts by LT surgeons in ANZ. Accurate evaluation and judicious use of mild and moderately steatotic grafts is required if we are to utilize the available donor pool best.Keywords: liver transplantation, steatosis, fatty liver, organ donors. (shrink)

Working memory--the ability to keep important information in mind while comprehending, thinking, and acting--varies considerably from person to person and changes dramatically during each person's life. Understanding such individual and developmental differences is crucial because working memory is a major contributor to general intellectual functioning. This volume offers a state-of-the-art, integrative, and comprehensive approach to understanding variation in working memory by presenting explicit, detailed comparisons of the leading theories. It incorporates views from the different research groups that operate on each (...) side of the Atlantic, and covers working-memory research on a wide variety of populations, including healthy adults, children with and without learning difficulties, older adults, and adults and children with neurological disorders. A particular strength of this volume is that each research group explicitly addresses the same set of theoretical questions, from the perspective of both their own theoretical and experimental work and from the perspective of relevant alternative approaches. Through these questions, each research group considers their overarching theory of working memory, specifies the critical sources of working memory variation according to their theory, reflects on the compatibility of their approach with other approaches, and assesses their contribution to general working memory theory. This shared focus across chapters unifies the volume and highlights the similarities and differences among the various theories. Each chapter includes both a summary of research positions and a detailed discussion of each position. Variation in Working Memory achieves coherence across its chapters, while presenting the entire range of current theoretical and experimental approaches to variation in working memory. (shrink)

Recently, a number of philosophers of biology have endorsed views about random drift that, we will argue, rest on an implicit assumption that the meaning of concepts such as drift can be understood through an examination of the mathematical models in which drift appears. They also seem to implicitly assume that ontological questions about the causality of terms appearing in the models can be gleaned from the models alone. We will question these general assumptions by showing how the same equation (...) — the simple 2 = p2 + 2pq + q2 — can be given radically different interpretations, one of which is a physical, causal process and one of which is not. This shows that mathematical models on their own yield neither interpretations nor ontological conclusions. Instead, we argue that these issues can only be resolved by considering the phenomena that the models were originally designed to represent and the phenomena to which the models are currently applied. When one does take those factors into account, starting with the motivation for Sewall Wright’s and R.A. Fisher’s early drift models and ending with contemporary applications, a very different picture of the concept of drift emerges. On this view, drift is a term for a set of physical processes, namely, indiscriminate sampling processes. (shrink)

The ‘Bolivarian Revolution’ in Venezuela under Hugo Chávez has reignited debate in Latin America and internationally on the questions of socialism and revolution. This forum brings together six leading intellectuals from different revolutionary traditions and introduces their reflections on class-struggle, the state, imperialism, counter-power, revolutionary parties, community and communes, workplaces, economy, politics, society, culture, race, gender, and the hopes, contradictions, and prospects of ‘twenty-first-century socialism’ in contemporary Venezuela.