P. B. Downing; VII.—Subjunctive Conditionals, Time Order, and Causation, Proceedings of the Aristotelian Society, Volume 59, Issue 1, 1 June 1959, Pages 125–140.

NIK1 is a receptor‐like kinase involved in plant antiviral immunity. Although NIK1 is structurally similar to the plant immune factor BAK1, which is a key regulator in plant immunity to bacterial pathogens, the NIK1‐mediated defenses do not resemble BAK1 signaling cascades. The underlying mechanism for NIK1 antiviral immunity has recently been uncovered. NIK1 activation mediates the translocation of RPL10 to the nucleus, where it interacts with LIMYB to fully down‐regulate translational machinery genes, resulting in translation inhibition of host and viral (...) mRNAs and enhanced tolerance to begomovirus. Therefore, the NIK1 antiviral immunity response culminates in global translation suppression, which represents a new paradigm for plant antiviral defenses. Interestingly, transcriptomic analyses in nik1 mutant suggest that NIK1 may suppress antibacterial immune responses, indicating a possible opposite effect of NIK1 in bacterial and viral infections. (shrink)

Introduction: The Dutch Euthanasia Act states that euthanasia is not punishable if the attending physician acts in accordance with the statutory due care criteria. These criteria hold that: there should be a voluntary and well-considered request, the patient’s suffering should be unbearable and hopeless, the patient should be informed about their situation, there are no reasonable alternatives, an independent physician should be consulted, and the method should be medically and technically appropriate. This study investigates whether physicians experience problems with these (...) criteria in medical practice.Methods: In 2006, questionnaires were sent to a random, stratified sample of 2100 Dutch physicians . Physicians were asked about problems in their decision-making related to requests for euthanasia or assisted suicide after enforcement of the 2002 Euthanasia Act.Results: Of all physicians who had received a request for euthanasia or assisted suicide , 25% had experienced problems in the decision-making with regard to at least one of the criteria of due care. Physicians who had experienced problems mostly indicated to have had problems related to evaluating whether or not the patient’s suffering was unbearable and hopeless and whether or not the patient’s request was voluntary or well considered .Discussion: Physicians in The Netherlands most frequently reported problems related to aspects in which they have to evaluate the patient’s subjective perspective. However, it can be questioned whether placing emphasis on these subjective aspects is an adequate fulfilment of the duties imposed on physicians, as laid down in the Dutch Euthanasia Act. (shrink)

Variable responses to transcranial direct current stimulation protocols across individuals are widely reported, but the reasons behind this variation are unclear. This includes tDCS protocols meant to improve attention. Attentional control is impacted by top-down and bottom-up processes, and this relationship is affected by state characteristics such as anxiety. According to Attentional Control Theory, anxiety biases attention towards bottom-up and stimulus-driven processing. The goal of this study was to explore the extent to which differences in state anxiety and related measures (...) affect visual attention and category learning, both with and without the influence of tDCS. Using discovery learning, participants were trained to classify pictures of European streets into two categories while receiving 30 min of 2.0 mA anodal, cathodal, or sham tDCS over the rVLPFC. The pictures were classifiable according to two separate rules, one stimulus and one hypothesis-driven. The Remote Associates Test, Profile of Mood States, and Attention Networks Task were used to understand the effects of individual differences at baseline on subsequent tDCS-mediated learning. Multinomial logistic regression was fit to predict rule learning based on the baseline measures, with subjects classified according to whether they used the stimulus-driven or hypothesis-driven rule to classify the pictures. The overall model showed a classification accuracy of 74.1%. The type of tDCS stimulation applied, attentional orienting score, and self-reported mood were significant predictors of different categories of rule learning. These results indicate that anxiety can influence the quality of subjects’ attention at the onset of the task and that these attentional differences can influence tDCS-mediated category learning during the rapid assessment of visual scenes. These findings have implications for understanding the complex interactions that give rise to the variability in response to tDCS. (shrink)

The COVID-19 pandemic shocked the global economy, with numerous companies suffering losses and shutting down. However, some companies proved to be resilient, being able to sustain their economic performance despite the pandemic. The study aims to explain the sustainable economic performance of companies during the COVID-19 pandemic. The relationships between empowering leadership, innovative work behavior, organizational readiness to change, and sustainable economic performance were assessed. The data were collected via an online questionnaire from January 2021 to March 2021, during the (...) height of the COVID-19 pandemic in Russia. The respondents were Russian companies’ employees holding management positions, competent to objectively assess organizational circumstances during the COVID-19 pandemic. A sample of 337 was used in the analysis. Confirmatory factor analysis (CFA) with maximum likelihood estimation was conducted using SPSS AMOS. The structural model was tested with standardized parameter estimates, standard errors, and p-values calculated. The findings of the study suggest that innovative work behavior and organizational readiness to learn have a direct influence on sustainable economic performance. The findings also suggest that empowering leadership impacts innovative work behavior but not sustainable economic performance. The mediation analysis indicates that innovative work behavior is a mediator between empowering leadership and sustainable economic performance, whereas organizational readiness to learn is not a moderator. The study adds to the leadership and sustainability body of knowledge and contributes to the research on the COVID-19 pandemic in the organizational context. (shrink)

Dit boek is een inleiding in het denken over recht en staat met een zwaar accent op de vraag hoe de staat om moet gaan met religie. 0Paul Cliteur en Afshin Ellian zijn hoogleraar encyclopedie van de rechtswetenschap aan de universiteit van Leiden.

I have long concluded that psychologists seek 'facts' but don't care about 'truth'; while philosophers seek 'truth' but don't care about 'facts'. After attending Tucson-2002, I would create a third reckless stereotype: eastern philosophy seek 'enlightenment' but don't care about 'facts' or 'truth'. To avoid this seeming to be the equal-opportunity put-down that it really is, let me amend that to: scientists seek inductive 'facts' about consciousness, western philosophers seek deductive 'truth' about consciousness, and eastern philosophers seek transcendent 'enlightenment' - (...) to grow, transcend, or lose my/our own consciousness. To make it even more complicated, there are - obliquely bridging the facts, truth, and enlightenment camps - brain-probing anaesthesiologists and others advocating an intriguing package of quantum mechanics, microtubules, pan-psychism and causation-running-backwards-in- time. H-E-L-P! With the echoes of the conference still in my mental ears, I dedicate this report to Mountcastle, Maharishi, and Monty Python. (shrink)

Originally published in 1969. This book explains what is wrong with the traditional methodology of "inductive" reasoning and shows that the alternative scheme of reasoning associated with Whewell, Pierce and Popper can give the scientist a useful insight into the way he thinks.

Originally published in 1969. This book explains what is wrong with the traditional methodology of "inductive" reasoning and shows that the alternative scheme of reasoning associated with Whewell, Pierce and Popper can give the scientist a useful insight into the way he thinks.

The book deals with the notion of Downward Causation from a wide array of perspectives, including physics, biology, psychology, social science, communication studies, text theory, and philosophy. The book includes proponents as well as opponents discussing the validity of the notion.

In L. Frank Baum's story, Ozma of Oz, which is a sequel to Baum's much more famous story, The Wonderful Wizard of Oz, Dorothy and her companion come upon a wound-down mechanical man bearing a label on which are printed the following words: Smith and Tinker's Patent Double-Action, Extra-Responsive, Thought-Creating Perfect-Talking MECHANICAL MAN Fitted with our Special Clock-Work Attachment Thinks, Speaks, Acts, and Does Everything but Live As Dorothy and her companion are made to discover when they wind up this (...) man, he is indeed capable of doing all the things of which his label boasts—acting, speaking and even thinking. But as Tik-Tok himself insists, and no one in the story casts doubt on the matter, he is not alive. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Bioethics in the Twenty-First Century: Why We Should Pay Attention to Eighteenth-Century Medical EthicsLaurence B. McCullough (bio)Those of us who work in the field of bioethics tend to think that, because the word “bioethics” is new, so too the field is new in all respects, but we are not the first to do bioethics. John Gregory (1724–1773) did bioethics just as we do it, at least two centuries before (...) we thought to do it (Gregory 1772). He deployed philosophical methods as sophisticated as our own. Indeed, Gregory took up the very best moral philosophy available to thinkers of the Scottish Enlightenment, namely, David Hume’s moral philosophy and its core concept of sympathy. Gregory also responded in a conceptually powerful and clinically applicable way to the problems of his time, just as we do. I want here to outline Gregory’s accomplishment and to identify some aspects of its importance for bioethics in the twenty-first century.Gregory’s “Problem List”Gregory wrote his medical ethics as a response to the then current state of medicine in Britain. We now follow Gregory in our writing of bioethics and clinical ethics in response to the problems of our time. A great deal that we now take for granted did not then exist. 1There was not, as there is now, any uniform pathway into medicine. Nor did there exist universal licensure. The Royal Colleges did attempt to assert, but failed to achieve, monopoly control of medical practice. The concepts of health and disease were themselves contested and therefore competed for their success in the market place. There was a marked oversupply of practitioners who competed fiercely—very fiercely indeed—in the medical market place for their concepts of health and disease, their treatments, and therefore their livelihoods. Patients had their own concepts of health and disease, engaged in “self-physicking” or self-care, and often traded physician’s prescriptions.Medicine exhibited little scientific discipline in its accounts of disease and in determining the efficacy of treatments, a fact that Gregory (1743) laments as a [End Page 329] medical student. There was no marked improvement when he began to give his medical ethics lectures nearly a quarter of a century later. Treatments failed as often, perhaps more often, than they succeeded in benefiting patients. The sick usually sought out the help of a physician after trying self-physicking.Physicians, Gregory taught, could not hope to control human biology, though they could aim to manage its processes well. When nature underresponds to disease the physician should assist her processes; when nature overresponds, the physician should tamp down nature’s responses, to lessen their “violence”—in both cases always attentive to the limits of medicine’s capacities in treating disease.Physicians attended the well-to-do sick at home, and the sick person summoned and dismissed physicians, surgeons, or apothecaries at will. A physician therefore might find himself—no women had yet been admitted to the ranks of university-trained physicians—summoned before, after, or simultaneously with a competitor, with his concepts and diagnosis and treatment put to the acid test. In this setting, there existed only a patient-physician relationship, not a physician-patient relationship.Physicians left off the care of dying patients, a practice that was made a matter of duty by Friederich Hoffmann (1749). One would suffer punishing economic consequences if one had a high mortality rate. Better, then, to label the patient incurable, withdraw, and turn matters over to clergy. Gregory attacks this practice as intellectual fraud and calls for the physician to continue to attend the dying. Indeed, he says, “It is as much the business of a physician to alleviate pain, and to smooth the avenues of death, when unavoidable, as to cure diseases” (Gregory 1772, p. 35). He does not explicitly address what we now call physician-assisted suicide; neither does he condemn it, and he is quick to condemn some things—e.g., sexual abuse of female patients or “sporting” with patients in the Royal Infirmary by using experiments as the first line of treatment.The Royal Infirmary was established to care for the deserving, working poor, who received free care... (shrink)

Imperatives cannot be true, but they can be obeyed or binding: `Surrender!' is obeyed if you surrender and is binding if you have a reason to surrender. A pure declarative argument — whose premisses and conclusion are declaratives — is valid exactly if, necessarily, its conclusion is true if the conjunction of its premisses is true; similarly, I suggest, a pure imperative argument — whose premisses and conclusion are imperatives — is obedience-valid (alternatively: bindingness-valid) exactly if, necessarily, its conclusion is (...) obeyed (alternatively: binding) if the conjunction of its premisses is. I argue that there are two kinds of bindingness, and that a vacillation between two corresponding variants of bindingness-validity largely explains conflicting intuitions concerning the validity of some pure imperative arguments. I prove that for each of those two variants of bindingness-validity there is an equivalent variant of obedience-validity. Finally, I address alternative accounts of pure imperative inference. (shrink)

We have a striking ability to alter our psychological access to past experiences. Consider the following case. Andrew “Nicky” Barr, OBE, MC, DFC, (1915 – 2006) was one of Australia’s most decorated World War II fighter pilots. He was the top ace of the Western Desert’s 3 Squadron, the pre-eminent fighter squadron in the Middle East, flying P-40 Kittyhawks over Africa. From October 1941, when Nicky Barr’s war began, he flew 22 missions and shot down eight enemy planes in his (...) first 35 operational hours. He was shot down three times, once 25 miles behind enemy lines while trying to rescue a downed pilot. He escaped from prisoner of war camps four times, once jumping out of a train as it travelled from Italy into Austria. His wife Dot, who he married only weeks before the war, waited for him at home. She was told on at least three occasions that he was missing in action or dead. For 50 years, Nicky Barr never spoke publicly, and rarely privately, of his war-time experiences. He was very much a forgotten and forgetting hero (for further details, see Dornan, 2002). In his first public interview in 2002 on the Australian documentary program “Australian Story”, Nicky explained his 50 year silence by saying. (shrink)

Human control of action in routine situations involves a flexible interplay between (a) task-dependent serial ordering constraints; (b) top-down, or intentional, control processes; and (c) bottom-up, or environmentally triggered, affordances. In addition, the interaction between these influences is modulated by learning mechanisms that, over time, appear to reduce the need for top-down control processes while still allowing those processes to intervene at any point if necessary or if desired. We present a model of the acquisition and control of goal-directed action (...) that goes beyond existing models by operationalizing an interface between two putative systems—a routine and a non-routine system—thereby demonstrating how explicitly represented goals can interact with the emergent task representations that develop through learning in the routine system. The gradual emergence of task representations offers an explanation for the transfer of control with experience from the non-routine goal-based system to the routine system. At the same time it allows action selection to be sensitive both to environmental triggers and to biasing from multiple levels within the goal system. (shrink)

One of five short texts in the publisher's "Foundations of Logic Series." Fisk presents a sentential calculus and extensions to uniform and full first-order quantification in terms of natural-deduction principles. The principles laid down are continually justified by reference to our instinctive use of language. In keeping with this approach, Fisk is concerned to base the system on an intensional implication relation which will avoid the familiar paradoxes. Unfortunately, his system S can be proved equivalent to the classical two-valued calculus. (...) This unanticipated result proceeds from principle S7, " p → q ∴ →." However, if S7 is dropped, the philosophical claims made for S hold good. By virtue of short but incisive discussions of controversial philosophical issues, e.g., existence and subjunctive conditionals, this book is a contribution as well as an introduction to philosophical thinking.—J. B. B. (shrink)

Kieran Egan states that imagination "is a concept that has come down to us with a history of suspicion and mistrust" (2007, p. 4). Like experience and the emotions, the imagination is frequently thought to be an obstacle to reason. While reason is conceived of as an abstract, objective and rule-governed method of delivering absolute truths, the imagination is considered "unconstrained, arbitrary, and fanciful," as well as "particular, subjective, and idiosyncratic" (Jo 2002, p. 39). This negative view of the imagination (...) can be traced back at least as far as Plato, and it is still evident in contemporary educational ideas and practices. Dominant approaches to schooling emphasize the accumulation of facts and the .. (shrink)

For his contribution to the general series of Harper Essays in Philosophy, Hilary Putnam selects only one of several philosophical problems in the interrelated fields of logic and/or mathematics that have interested him, viz. the nominalism-realism issue: Are the "abstract entities" spoken of in these sciences, such as classes, number, functions from various kinds of things to real numbers, things that "really exist" or not? He is concerned to present a detailed argument for his own "qualified realism" rather than a (...) survey of current opinions. He argues persuasively that while a nominalist would like to eliminate all talk of logical classes such as S, M and P in favor of such circumlocutions as "The following schema turns out to be true no matter what words or phrases of the appropriate kind one may substitute for the letters S, M and P," etc., such descriptions avoid references to classes only by replacing them with equally nonphysical entities such as "all possible words, strings of letters, formalized languages," etc., and that the notion of truth or validity itself cannot be applied to physical objects or material inscriptions, but to what sentences mean or say, and the things they say are not physical. He rejects Quine's distinction that first order statements or arguments such as "All crows are black; all back things absorb light, therefore," etc., are logical truths, whereas "For all classes S, M and P, if all S is M and all M is P, then all S is P," are mathematical. This runs counter, he says, to the whole logical tradition. The natural intention of the logician in setting down first-order schemata is to assert implicitly their validity and that itself is a second-order assertion. All logic, therefore, including quantification theory, involves references to classes. This also highlights the difficulty of distinguishing between logic and mathematics in terms of first and second order logic, for if only the former is stipulated to be the proper domain of logic, then we must accept the awkward consequence that validity and implication turn out to be notions that belong to mathematics rather than logic. Since the nominalistic position presents the same problems for mathematics as for logic, Putnam sees no point in trying to draw any sharp distinction between the two, which explains his initial broad interpretation of logic as including all of pure mathematics and also the title of the book. To avoid some of the classical objections to a realistic interpretation of sets, he points up the distinction between a predicative and impredicative conception of set. Whereas the latter speaks of all sets of individuals as a well-defined totality, the former defines "set" only for a particular language N or a hierarchic series of languages, N, N', N", etc. in which it is still nonsensical to speak of "all sets" without qualification, though one can speak of "all" up to any given level in the series. While some form of set theory is necessary for all the sciences, both formal and physical, one can get along with predicative set theory. Putnam's basic argument for realism then comes down to this. Quantification over mathematical entities such as things, real numbers and functions is indispensable for logic, mathematics and the physical sciences and this commits one to accept the existence of such entities. In the final stages of the argument he examines and rejects the alternative options to realism, namely that realistic locutions about such entities represent logically deviant forms of speech, or that mathematical truths are "true by pure convention" or that such "entities" are useful fictions. In the closing paragraphs he indicates two other philosophical problems in logic that merit extensive discussion, namely the problem of equivalent constructions which is relevant to the question of whether mathematics needs "foundations" and the problem of whether we may not have to revise logical principles as we have geometrical ones on the grounds that in some sense logic may have empirical foundations.--A. B. W. (shrink)

Originally published in 1957, The Uniqueness of the Individual is a collection of 9 essays published from the ten years preceding publication. The essays deal with some of the central problems of biology. These are among the questions put and answered from the standpoint of modern experimental biology. What is ageing and how is it measured? What theories have been held to account for it, and with what success? Did ageing evolve, and if so how? Is Lamarckism and adequate explanation (...) of evolutionary process? Does evolution sometimes go wrong? Do human beings evolve in a way peculiar to themselves? Other essays touch upon the problems of scientific method and of growth and transformation. This book will be of interest to natural historians, evolutionists and anthropologists. (shrink)

Before going further, it will be helpful to consider briefly the notion that novelty per se is a fundamental human need. Experiments with human beings, as well as with animals, indicate that the maintenance of normal, successful behavior depends upon an adequate level of incoming stimulation—or, as some have put it, of novelty.2 But lumping all novelty together is misleading. At least three kinds of novelty need to be distinguished. Some novel patterns arise out of, or represent, changes in the (...) fundamental rules governing the organization of musical processes and structures. By significantly weakening our comprehension of the musical relationships presented—undermining not only our understanding of what is past but our ability to envisage what is to come—such systemic change seriously threatens our sense of psychic security and competent control. Far from being welcome, the insecurity and uncertainty thus engendered is at least as antipathetic, disturbing, and unpleasant as stimulus privation. Novel patterns may also result from the invention of a new strategy that accords with prevalent stylistic rules. Though they may initially seem to threaten existing competencies, the function and significance of novel strategies within the larger set of stylistic constraints can usually be grasped without too much delay or difficulty. For a while the tensions produced by strategic innovation may seem disturbing. But in the end, when our grasp of the principles ordering events is confirmed and our sense of competency is reestablished and control is reinforced, tension is resolved into an elation that is both stimulating and enjoyable. Most novel patterns—original themes, rhythms, harmonic progressions, and so forth—involve the innovative instantiation or realization of an existing strategy or schema .3 Novelties of this kind not only enhance our sense of control—a feeling that we know how things really “work”—but provide both the pleasure of recognition and the joy of skillfully exercising some competency. We enjoy novelty—the stimulation of surprise, the tension of uncertainty—as long as it can be accommodated within a known and understandable set of constraints. When the rules governing the game are abrogated or in doubt—when comprehension and control are threatened—the result is usually anger, anguish, and desperation.These responses to novelty are consequences of fundamental and poignant verities of the human condition: the centrality of choice in human behavior. Because only a minute fraction of human behavior seems to be genetically specified, choice is inescapable.While in lower organisms, behavior is strictly determined by the genetic program, in complex metazoa the genetic program becomes less constraining, more “open” as Ernst Mayr puts it, in the sense that it does not lay down behavioral instructions in great detail but rather permits some choice and allows for a certain freedom of response. Instead of imposing rigid prescriptions, it provides the organism with potentialities and capacities. This openness of the genetic program increases with evolution and culminates in mankind.4The price of freedom is the imperative of choice. Human beings must choose were to sow and when to reap, when to work and where to live, when to play and what to build. Intelligent, successful choices are possible only if alternative courses of action can be imagined and their consequences envisaged with reasonable accuracy. 2. For further discussion, see my Music, the Arts, and Ideas , p. 50.3. Rules are transpersonal but intracultural constraints—for instance, the pitch/time entities established in some style, as well as grammatical and syntactic regularities. Strategies are general means for actualizing some of the possibilities that are potential in the rules of the style. The rules of a style are relatively few, while the number of possible strategies may, depending upon the nature of the rules, be very large indeed. The ways of instantiating a particular strategy are, if not infinite, at least beyond reckoning.4. François Jacob, The Possible and the Actual , p. 61. See also Stephen Jay Gould, Ever Since Darwin , p. 257. (shrink)

Central to Thomas Sprat's History of the Royal Society was the description and justification of the method adopted and advocated by the Fellows of the Society, for it was thought that it was their method which distinguished them from ancients, dogmatists, sceptics, and contemporary natural philosophers such as Descartes. The Fellows saw themselves as furthering primarily a novel method, rather than a system, of philosophy, and the History gave expression to this corporate self-perception. However, the History's description of their method (...) was not necessarily accurate. Rather, as will be argued below, by a combination of subtle misrepresentation and selective exposition, Sprat portrayed a method which would further the aims of social and ecclesiastical stability and material prosperity, essential for the Royal Society since its continued existence depended upon the creation of a social basis for the institutionalized pursuit of natural philosophy. Some link had to be forged between the activities of the Society and the intellectual and social aspirations of the Restoration. To understand the intent and meaning of Sprat's History and the method there portrayed, we must therefore look to the institutional needs which it fulfilled. (shrink)

Originally published in 1960, The Future of Man is a chronicle of Professor Medwar's Reith lectures of 1959. The book outlines his predictions about the future estate of man, with the 'process of foretelling, rather than with what is actually foretold'. He asks, can we predict the future size of populations? What is the evidence and theoretical background for the belief that human intelligence is declining? Could human beings become uniformly excellent or is inborn diversity and inequality a necessary part (...) of the texture of human populations? The lectures tried to answer these questions and attempts to end with a definition of the biological standing of man. This book will be of interest to anthropologists, biologists and natural historians. (shrink)

First published in 1972, The Hope of Progress presents collection of essays and lectures dealing with the history of scientific ideas and the impact of science on society. The principle piece in this volume is the author's 1969 presidential address to the British Association 'On The Effecting of All Things Possible', an argument for believing in the ability of science to solve the problems it has itself created, and which too many of us believe insoluble. It contains author's Romanes Lecture (...) on 'Science and Literature' and a well known critique of J.D. Watson's notorious account of the discovery of the molecular structure of DNA, The Double Helix. Other chapters discuss the possibility of the control and domination by science of the body and mind of Man- though the author concludes in 'The Genetic Improvement of Man' 'I think that, in the main, for many centuries to come, we shall have to put up with human beings as they are at present constituted'. This book will be useful for scholars and researchers of history of science, philosophy of science, natural science, and philosophy in general. (shrink)

Two inscriptions, one found at Tylissos on Crete, the other found at Argos, both dated about 450, concern relations between Argos and the Cretan towns of Knossos and its smaller neighbour, Tylissos. The close relationship between the treaties of fragment A and fragment B – and therefore the interconnection among Argos, Knossos, and Tylissos – seems generally recognized by scholars. The articles of the agreement lay down a diverse and complex set of arrangements among the three parties, but as a (...) whole, the treaty has been interpreted in two ways: the three πóλεις have entered into some sort of federal union; only Argos and Knossos are signatories to the treaty, while Tylissos is a dependency of Argos. The former interpretation has gained wider acceptance than the latter, and if it is correct, just such a federal union would represent a remarkable advance in the development of Greek political institutions. In this paper we shall press a philological point based upon the information we have both from the treaty and from contemporary sources, and in so doing, we shall attempt to show that a federal union is unlikely. We shall then offer our own interpretation of the regulations governing the insular cities with regard to the formation of alliances and the declaration of friends and enemies. (shrink)

Social and political scientists, historians and others, have put forward a number of widely differing views concerning the ‘character’ of Islamic millenarian and/or Mahdist movements in Africa. The same is true of course with regard to the opinions ofscholars concerning the transformative capacity of Islam as an ideology. In this paper I want to look at one aspect only of Islamic millenarianism in the West African context, viz. its allegedly revolutionary character.