The Transformation of Learning gives an overview of some significant advances of the cultural-historical activity theory, also known as CHAT in the educational domain. Developments are described with respect to both the theoretical framework and research. The book's main focus is on the evolution of the learning concept and school practices under the influence of cultural-historical activity theory. Activity theory has contributed to this transformation of views on learning, both conceptually and practically. It has provided us with a useful approach (...) to the understanding of learning in cultural contexts. (shrink)

In pluralistic Western societies, schools have a specific task in moral education. This task is to be understood neither as the transmission of specific values, nor as the development of moral reasoning skills or universal values, but as teaching pupils to handle plurality in an autonomous way. The concept of autonomy is interpreted from a Vygotskian and Deweyan position, where learning in school means learning to participate in cultural activities in a reflective and critical way. Participation has both intellectual and (...) moral aspects, and thus moral education can never be separated from cognitive education. (shrink)

The condition of explicit theoretically discursive cognitive performance, as it culminates in scientific activity, is, I claim, the life world. I contrast life world and scientific world and argue that the latter arises from the first and that contrary to the prevailing views the scientific world (actually, worlds, since the classical world is substantially different from the quantum world) finds its completion in the life world and not the other way around. In other words: the closure we used to search (...) in a complete and comprehensive scientific description of all aspects of experience by referring it back to underlying atoms, genes and other scientific objects and the covering laws ruling them, should be sought in a reintegrating and occasionally dissolving of the abstract scientific model in the self-organizational fluidity and superposition-like indeterminateness and non-locality of the life world: “We have to acknowledge the indeterminate as a positive phenomenon” (Merleau-Ponty in his The Phenomenology of Perception). (shrink)

Apparently factual disagreement on the level(s) at which selection operates often results from different interpretations of the term selection. Attempts to resolve terminological problems must come to grips with a dilemma: a narrow interpretation of selection may lead to a restricted view on evolution; a broader, less precise, definition may wrongly suggest that selection is the centre of a unified, integrated theory of evolution. Different concepts of selection, therefore, should carefully be kept apart.

The author proved in his Ph.D. Thesis [W. Veldman, Investigations in intuitionistic hierarchy theory, Ph.D. Thesis, Katholieke Universiteit Nijmegen, 1981] that, in intuitionistic analysis, the positively Borel subsets of Baire space form a genuinely growing hierarchy: every level of the hierarchy contains sets that do not occur at any lower level. It follows from this result that there are natural examples of analytic and also of co-analytic sets that are not positively Borel. It turns out, however, that, in intuitionistic analysis, (...) one may give surprisingly different and, in some sense, much more simple examples of analytic and co-analytic sets that fail to be positively Borel. In the paper, two such examples are given. In proving them correct, one obtains new proofs of the Borel Hierarchy Theorem. Brouwer’s Continuity Principle plays a crucial role in arguments. (shrink)

Transparency is a crucial condition to implement a CSR policy based on the reputation mechanism. The central question of this contribution is how a transparency policy ought to be organised in order to enhance the CSR behaviour of companies. Governments endorsing CSR as a new means of governance have different strategies to foster CSR transparency. In this paper we discuss the advantages and disadvantages of two conventional policy strategies: the facilitation policy and the command and control strategy. Using three criteria (...) (efficiency, freedom and virtue) we conclude that both strategies are defective. Most attention is paid to the facilitation strategy since governments nowadays mainly use this. In evaluating this strategy we analyse the Dutch case. As an alternative we introduce a third government policy: the development of a self-regulating sub-system. By construing an analogy with the historical development of corporate financial disclosure, we point out that the vital step in the creation of a self-regulating subsystem is the creation of strong informational intermediate organisations. (shrink)

An arms race for an artificial general intelligence would be detrimental for and even pose an existential threat to humanity if it results in an unfriendly AGI. In this paper, an all-pay contest model is developed to derive implications for public policy to avoid such an outcome. It is established that, in a winner-takes-all race, where players must invest in R&D, only the most competitive teams will participate. Thus, given the difficulty of AGI, the number of competing teams is unlikely (...) ever to be very large. It is also established that the intention of teams competing in an AGI race, as well as the possibility of an intermediate outcome, is important. The possibility of an intermediate prize will raise the probability of finding the dominant AGI application and, hence, will make public control more urgent. It is recommended that the danger of an unfriendly AGI can be reduced by taxing AI and using public procurement. This would reduce the pay-off of contestants, raise the amount of R&D needed to compete, and coordinate and incentivize co-operation. This will help to alleviate the control and political problems in AI. Future research is needed to elaborate the design of systems of public procurement of AI innovation and for appropriately adjusting the legal frameworks underpinning high-tech innovation, in particular dealing with patenting by AI. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:More About Hume's Debt to Spinoza Wim Klever In a recent contribution to the question of Hume's relationship to SpinozaIadvocatedamoreorlessSpinozisticinterpretationofthefirst bookofA Treatise ofHumanNature.1 Ofthe Understanding, sowasmy claim, is not only very close to De natura et origine mentis (Ethica, second part) as far as its main affirmations are concerned; the convergence ofexternal and internal evidence makes it also probable that there is a remarkable influence from the one's work (...) on the other and, accordingly, that Hume's defamation of Spinoza's system might well have been disingenuous. This last point was previously also suggested by Richard Popkin in an article in which he compared Hume's philosophy ofreligion with Spinoza's.2 What motivated me to continue my research in this field? To say itinone word: the unintendeddiscoveryofmanystrikingresemblances betweenHume's secondbook, OfthePassions,andSpinoza'sthirdpart, De origine et natura affectuum. I happened to become a member of a group ofinterested people who concentrate on reading Hume, and, on the other hand, I had acquired some expertise as a Spinoza scholar for quite a number of years, so that I could not avoid seeing the commonaUties between the two philosophers. It seems to be fully impossible to explain the resemblances—which I, ofcourse, will show below—by referring to the Spinoza-article in Bayle's Dictionaire historique et critique (a source once mentioned by Hume in a letter to a London friend), since Bayle does not spend a word to the human passions. It is further a hard fact that there do not exist other written sourcesfrom which Humemighthave drawnhisSpinozisticinspiration in his French period apart from the Ethics; all available literature of the time turned around the questions theism versus atheism and free will versus determinism, without entering into the details ofhuman emotions.3 Only one conclusion was possible for me: Hume musthave been familiar with Spinoza's own text. Either the Chevaher Ramsay, whose intimate he was for some time,4 or anotherintermediaryfigure5 must have raised his interest. The best entrance into the material is constituted by Hume's closing remark in his A Dissertation on the Passions (1757), in which he elucidates what he in fact has been doing in hie analysis of the passions: Volume XDI Number 1 55 WIM KLEVER I pretend not to have here exhausted this subject. It is sufficient formy purpose, ifI have made it appear, that, in the production and conduct of the passions, there is a certain regular mechanism, which is susceptible of as accurate a disquisition, as the laws ofmotion, optics, hydrostatics, or any part ofnatural philosophy.6 In spite ofthe words "a certain," this fragment maynot be interpreted as a metaphorical assessment. The origin and the processes ofhuman passions are purely mechanical. If this is not what Hume intends to declare, he never could have added the phrase that passions are susceptible of exactly the same kind of accurate descriptions as other natural phenomena. This theory of the mechanism of the passions is certainly not Cartesian. Although Descartes, as a physical scientist, was a great promoter of the explanation of things by means of mechanical causality, he in fact did not extend this method to the life ofthe passions. In his dualistic philosophy he ascribes to the human mind (with its free will) the capability to interfere with the passions and even to dominate them.7 In this field it is Spinoza who paves the way for Hume by sharply criticizing Descartes' non-mechanistic explanation ofthe passions. His far-fetched solution ofthe mind-body interactivity by means of the pineal gland and the animal spirits pushing against it, is called "a hypothesis more occult than any occult quality." 8 Spinoza acknowledged that Descartes had good intentions in trying to explain the human affections by their direct causes, but he was inconsistent insofar as he at the same time attempted to demonstrate man's absolute dominion over them. He, Spinoza, on the contrary, "will consider human actions and appetites just as ifit were a question ofUnes, planes and bodies." 9 The analysis of passions is a piece of natural science comparable with geometry, optics10 and hydrostatics, to mention some other fields of Spinoza's research. Hume's statement... (shrink)

This paper presents new results from a detailed study of the structure of autocatalytic sets. We show how autocatalytic sets can be decomposed into smaller autocatalytic subsets, and how these subsets can be identified and classified. We then argue how this has important consequences for the evolvability, enablement, and emergence of autocatalytic sets. We end with some speculation on how all this might lead to a generalized theory of autocatalytic sets, which could possibly be applied to entire ecologies or even (...) economies. (shrink)

This article aims to examine the problem of political representation through the work of Lefort, Gauchet and Rosanvallon. It first looks at Lefort, who argues that a democratic society is characterized by a tension between its abstract guiding principles and its concrete reality. Political representation, then, mediates between these principles and society. This theory of representation allows Lefort, Gauchet and Rosanvallon not only to examine critically both past and present discourses of their contemporaries, but also to offer an alternative history (...) of their own. Yet, since the 1980s, increasing individualization has exacerbated the tension between abstract principles and society, thus making political mediation more difficult. This article discusses the diagnosis and remedy to this predicament, as developed by Gauchet and Rosanvallon. While Gauchet offers an interesting diagnosis, but remains sceptical about possible solutions, Rosanvallon is more voluntarist and offers concrete solutions for today’s crisis of political representation. (shrink)

This editorial is a report on the ‘philosophical methods’ workshop we ran at the 2024 Academy of Management conference in Chicago.

A holy, universal church. The Nicene Creed and the Apostolicum went through different processes of growth and development. In the early development of both creeds, it is noticeable that articles about ‘the church’ are absent. In this contribution the creeds are examined in terms of their development, the inclusion of the articles on the church, their reception during the 16th century Reformation as well as difficulties in the official Afrikaans translations. It concludes with a short exposition of the Apostolicum’s article (...) on the church. (shrink)

This paper analyses whistleblowing from the perspective of Floridi’s information ethics. Although there is a vast body of literature on whistleblowing using micro-ethical or meso-ethical frameworks, whistleblowing has previously not been researched using a macro-ethical or ecopoietic framework. This paper is the first to explicitly do so. Empirical research suggests whistleblowing is a process rather than a single decision and action. I argue this process evolves depending on how whistleblowing is facilitated throughout that process, i.e. responding to whistleblowers and providing (...) information about whistleblowing activity. The paper develops a typology of whistleblowing facilitation to complement Floridi’s IE. The findings suggest that for whistleblowing to be beneficial to the informational environment, facilitation must filter out untrue whistleblowing, and achieve closure with the whistleblower, especially when whistleblowing is mistaken or deliberately false. I also find that publishing information about whistleblowing activity can be beneficial for the informational environment, but only if all organizations or all regulators do so. (shrink)

I defend an account of Moore's conception of Common Sense—as it figures in "A Defence of Common Sense"—according to which it is based in a vision of the community of human beings as bound and unified by a settled common understanding of the meaning of our words and statements. This, for Moore, is our inalienable starting point in philosophy. When Moore invokes Common Sense against idealist (and skeptical) philosophers, he is reminding them that they too are bound by this common (...) understanding, which cannot just be left behind as they confusedly believe. On Moore's conception, Common Sense becomes nothing other than the affirmation that there is such a common understanding—that there is Common Sense—which yields a specific body of Common Sense knowledge. This yields a more principled account of Common Sense than a mere tallying of what contingently happens to be believed (or known) by all. (shrink)

Interdisciplinary integration has fundamental limitations. This is not sufficiently realized in science and in philosophy. Concerning scientific theories there are many examples of pseudo-integration which should be unmasked by elementary philosophical analysis. For example, allegedly over-arching theories of stress which are meant to unite biology and psychology, upon analysis, turn out to represent terminological rather than substantive unity. They should be replaced by more specific, local theories. Theories of animal orientation, likewise, have been formulated in unduly general terms. A natural (...) history approach is more suitable for the study of animal orientation. The tendency to formulate overgeneral theories is also present in evolutionary biology. Philosophy of biology can only deal with these matters if it takes a normative turn. Undue emphasis on interdisciplinary integration is a modern variant of the old unity of science ideal. The replacement of the ideal by a better one is an important challenge for the philosophy of science. (shrink)

BackgroundResearch misconduct and questionable research practices have been the subject of increasing attention in the past few years. But despite the rich body of research available, few empirical works also include the perspectives of non-researcher stakeholders.MethodsWe conducted semi-structured interviews and focus groups with policy makers, funders, institution leaders, editors or publishers, research integrity office members, research integrity community members, laboratory technicians, researchers, research students, and former-researchers who changed career to inquire on the topics of success, integrity, and responsibilities in science. (...) We used the Flemish biomedical landscape as a baseline to be able to grasp the views of interacting and complementary actors in a system setting.ResultsGiven the breadth of our results, we divided our findings in a two-paper series with the current paper focusing on the problems that affect the integrity and research culture. We first found that different actors have different perspectives on the problems that affect the integrity and culture of research. Problems were either linked to personalities and attitudes, or to the climates in which researchers operate. Elements that were described as essential for success were often thought to accentuate the problems of research climates by disrupting research culture and research integrity. Even though all participants agreed that current research climates need to be addressed, participants generally did not feel responsible nor capable of initiating change. Instead, respondents revealed a circle of blame and mistrust between actor groups.ConclusionsOur findings resonate with recent debates, and extrapolate a few action points which might help advance the discussion. First, the research integrity debate must revisit and tackle the way in which researchers are assessed. Second, approaches to promote better science need to address the impact that research climates have on research integrity and research culture rather than to capitalize on individual researchers’ compliance. Finally, inter-actor dialogues and shared decision making must be given priority to ensure that the perspectives of the full research system are captured. Understanding the relations and interdependency between these perspectives is key to be able to address the problems of science.Study registrationhttps://osf.io/33v3m. (shrink)

In classical propositional calculus for each proposition A(p) the following holds: $\vdash A(p) \leftrightarrow A^3(p)$ . In this paper we consider what remains of this in the intuitionistic case. It turns out that for each proposition A(p) the following holds: there is an n ∈ N such that $\vdash A^n(p) \leftrightarrow A^{n + 2}(p)$ . As a byproduct of the proof we give some theorems which may be useful elsewhere in propositional calculus.

Should we conceive of corporations as entities to which moral responsibility can be attributed? This contribution presents what we will call a political account of corporate moral responsibility. We argue that in modern, liberal democratic societies, there is an underlying political need to attribute greater levels of moral responsibility to corporations. Corporate moral responsibility is essential to the maintenance of social coordination that both advances social welfare and protects citizens' moral entitlements. This political account posits a special capacity of self-governance (...) that corporations can intelligibly be said to possess. Corporations can be said to be "administrators of duty" in that they can voluntarily incorporate moral principles into their decision-making processes about how to conduct business. This account supplements and partly transforms earlier pragmatic accounts of corporate moral responsibility by disentangling responsibility from its conventional linkages with accountability, blame and punishment. It thereby represents a distinctive way to defend corporate moral responsibility and shows how Kantian thinking can be helpful in disentangling the problems surrounding the concept. (shrink)

This article deals with the question of how self-organization in living organisms is realized. Self-organization may be observed in open systems that are out of equilibrium. Many disequilibria-conversion phenomena exist where free energy conversion occurs by spontaneously formed engines. However, how is self-organization realized in living entities? Living cells turn out to be self-organizing disequilibria-converting systems of a special kind. Disequilibrium conversion is realized in a typical way, through employing information specifying protein complexes acting as nano engines. The genetic code (...) enables processing of information—derived from coding DNA—to produce these molecular machines. Hence, information is at the core of living systems. Two promising approaches to explaining living cells containing sequences carrying information are mentioned. Also discussed is the question of whether a second concept of self-organization—namely, the Kantian concept—applies. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Hume Contra Spinoza? Wim Klever In Book 1 ofthe TreatiseofHumanNature1 Spinoza enjoys thehonour ofbeing the only figure from the history of philosophy and science to be explicitly and extensively discussed by Hume. This honour is, however, a dubious one as the treatment he gets is not so friendly. The passage (T 232-51) is full of insults and denunciations: Spinoza is referred to as "that famous atheist" (T 241), and (...) characterized as "universally infamous" (T 240). His doctrine contains "a true atheism" (T 240). His theory about the thinking substance is an "hideous hypothesis" (T 241); Hume does not want to enter "farther into these gloomy and obscure regions" (T 241), although he spends ten pages on the subject. Richard Popkin2 suggests on account ofthis not too well studied section: "In introducing Spinoza into the discussion of the immateriality ofthe soul, Hume follows what was common practice in his day." This statement, if true, raises the question whether Hume was sincere in writing these 'satanicverses'. Does he, after all, hide the backside of his tongue? This would bring him pretty well in line with two of his English forerunners; with Hobbes about whom Aubrey recorded: "He toldme he [Spinoza]had outthrown him [Hobbes] a bar's length, for he [Hobbes] durst not write so boldly," and with Locke, who possessedinhis privatelibraryall Spinoza's worksbutnonetheless, for one reason or another, refused to assess the theories of "those decried names," saying "I am not so well read in Hobbes or Spinoza as to be able to say what were their opinions in this matter" (namely the pre-existence ofthe soul).4 One commentator, named Gilbert Boss, wrote a two volume dissertation in order to argue for the fundamental opposition between the philosophical systems of both thinkers. In this paper I wish to propose another view and to defend their overall agreement. I will not do so with regard to their thought on religion (as this is already done byPopkin), but I shall more specificallyfocuson the theoretical (mainly epistemological) part oftheir work. Coming to Hume's text the reader of Spinoza's work who is, moreover, convinced by his geometrical demonstration of the propositions, does feel himself quite well at home chez Hume. Hume's is not another world for him. Apart from the question who is the real first modern thinker, Descartes, Hobbes, Spinoza or Hume, there is much common in their treatises on man and world, not only methodologically. Hume's rejection of "the antient philosophy," in Volume XVI Number 2 89 WIM KLEVER which he criticizes the "fictions... concerning substances, and substantial forms, and accidents, and occult qualities" (T 219), "sympathies, antipathies, and horrors ofa vacuum" (T 224) could have been written by the three other candidates as well. In fact every one of thoseitems maybe tracedoutin Spinoza's work; compare, for instance, JSp 136 ("doctrinam illam puerilem et nugatoriam de formis substantialibus, qualitatibus etc.") or 2 PPC 8s ("Quare omnia ilia figmenta de sympathie et antipathie ut falsa sunt reicienda... Nunquam dicendum erit, quod corpus aliquod movetur, ne detur vacuum; sed tantum ex alterius impulsu"). But let us go to the main theme in Book 1 ofthe Treatise, already present in Part 1, Section 1, "Ofthe Origin ofour Ideas." All our ideas result from impressions, themselves also being ideas or perceptions, though withmoreforce andliveliness. The original perceptions aresaid to be "the causes of our ideas" (T 5). We find the impressions in our mind and their effects, our ideas. Hume does not explain the cognitive status ofthe impressions by reducing them to non-cognitive processes. The "universe of the imagination" (T 68) is a world apart, irreducible to matter; we can't step out ofit, "since nothing is ever present to the mind but perceptions, and since all ideas are deriv'd from something antecedently present to the mind" (T 67). Ideas, whatever their character (about external existences or not), can only be explained by other ideas. Hume carefully avoids the category mistake of transcending the border from mental to material things and keeps consequently, at least methodologically, to the absolute caesura between mind and body. The Spinozistic reader must necessarily feel sympathy for this position. The attributes of... (shrink)

Legal information retrieval is in need of the provision of legal knowledge for the improvement of search strategies. For this purpose, the LOIS project is concerned with the construction of a multilingual WordNet for cross-lingual information retrieval in the legal domain. In this article, we set out how a hybrid approach, featuring lexically and legally grounded conceptual representations, can fit the cross-lingual information retrieval needs of both legal professionals and laymen.

In this article two questions are discussed with regard to semiosis in protein biosynthesis for nano engines. (1) What kind of semiosis is involved in the construction of these proteins? and (2) How can we explain the semiotic process observed? With regard to the first issue we draw attention to comparisons between semiosis in protein biosynthesis and human natural language. The notion of normativity appears to be of great importance for both. A comparison also demonstrates differences. Nevertheless, because of the (...) normative symbolic information processing in it, we suggest to employ the term symbolic reference (employed in linguistics as a distinguishing feature of human language) to indicate the semiotic processes in protein biosynthesis. With regard to explaining semiosis in protein synthesis we compare different approaches. We conclude that a Kantian approach should be preferred. In such an approach strengths of the mechanistic and organicist approaches can be combined, and the observed symbolic information processing acknowledged. (shrink)

The participation of minors in clinical trials is essential to provide safe and effective medical care to children. Because few drugs have been tested in children, pediatricians are forced to prescribe medications off-label with uncertain efficacy and safety. In this article, we analyze how the enrollment of minors in clinical trials is negotiated within relationships of mutual trust between clinicians, minors, and their parents. After a brief description of the problems associated with involving minors in clinical research, we consider how (...) existing “relationships of trust” can be used as a place where the concerns of research subjects can be more fully discussed and addressed. Building on the tacit recognition of trust found in The European Clinical Trials Directive we make policy recommendations that allow for clearer, more ethically informed guidelines for enrolling minors in clinical research. (shrink)

Mealey's evolutionary reasoning is logically flawed. Furthermore, the evidence presented in favor of a genetic contribution to the causation of sociopathy is overinterpreted. Given the potentially large societal impact of sociobiological speculation on the roots of criminality, more-than-usual caution in interpreting data is called for.

Budgetary austerity has been implemented by all levels of government in Belgium since 1982. The public attention has focussed on the achievements of the centra[ level. However, also at the local level a remarkable budgetary retrenchment has been realised. This study investigates the various aspects of decremental budgeting of the Belgian municipolities, both at the expenditures and the revenues side.

The ongoing COVID-19 pandemic and resulting health and economic crisis has caused major disruptions in the functioning of food systems and revived the discussion on what forms balanced, effective and responsible crisis management. As part of its thought leadership and its social responsibility in times of crisis, WUR is uniquely placed to contribute to the scientific knowledge base and data collection mechanisms required for early recognition and rapid response. In addition, WUR takes on the challenge to generate timely insights into (...) the possible scenarios for the prevention of a crisis and during and after emergencies to enable our clients and stakeholders to make informed decisions. Lastly, WUR can provide a better understanding of the mechanisms of spillover, and tangible and practical tools to help reduce the risk of spillover events from occurring, prevent pathogen spread, or mitigate the impacts of a future pandemic. In its research institutes and university, WUR brings together expertise in human, animal, plant and environmental health, the global agri-food system, economics, social sciences, food safety and security, ethics, and policy. Here, in the knowledge that COVID-19 will not be the last pandemic, we present WUR’s ambition and capabilities towards an integrated global multi-stakeholder approach to the prevention and management of potentially pandemic diseases, across the four phases of crisis management; prevention, preparedness, response, and recovery and learning. (shrink)

Silent gestures consist of complex multi‐articulatory movements but are now primarily studied through categorical coding of the referential gesture content. The relation of categorical linguistic content with continuous kinematics is therefore poorly understood. Here, we reanalyzed the video data from a gestural evolution experiment (Motamedi, Schouwstra, Smith, Culbertson, & Kirby, 2019), which showed increases in the systematicity of gesture content over time. We applied computer vision techniques to quantify the kinematics of the original data. Our kinematic analyses demonstrated that gestures (...) become more efficient and less complex in their kinematics over generations of learners. We further detect the systematicity of gesture form on the level of thegesture kinematic interrelations, which directly scales with the systematicity obtained on semantic coding of the gestures. Thus, from continuous kinematics alone, we can tap into linguistic aspects that were previously only approachable through categorical coding of meaning. Finally, going beyond issues of systematicity, we show how unique gesture kinematic dialects emerged over generations as isolated chains of participants gradually diverged over iterations from other chains. We, thereby, conclude that gestures can come to embody the linguistic system at the level of interrelationships between communicative tokens, which should calibrate our theories about form and linguistic content. (shrink)

This article describes and analyses the development of modern irrigation in Java within the context of the establishment and transformation of the colonial state in the Dutch East Indies / Indonesia. In order to make this relationship comprehensible the concept “large technical system” has been adopted. The colonial socio-technical irrigation system was built between 1830 and 1942. Engineers, civil servants and agricultural experts were the main system builders and they formed specific coalitions practising specific irrigation approaches. After Indonesia gained its (...) independence, the colonial irrigation system remained in existence and, consequently, irrigation engineering remained top-down, large-scale and focused on agricultural-technical management. (shrink)

Grime (1979) in a recently developed theory distinguished three basic plant strategies: stress tolerance,ruderality and competition. He relates them to environments characterized in terms of stress and disturbance. Classifications of strategies and environments both are ultimately defined in terms of production. This tends to make the theory tautological. If the theory is to make sense, environments had better be defined in independent terms.

In his 1939 Cambridge Lectures on the Foundations of Mathematics, Wittgenstein proclaims that he is not out to persuade anyone to change their opinions. I seek to further our understanding of this point by investigating an exchange between Wittgenstein and Turing on contradictions. In defending the claim that contradictory calculi are mathematically defective, Turing suggests that applying such a calculus would lead to disasters such as bridges falling down. In the ensuing discussion, it can seem as if Wittgenstein challenges Turing's (...) claim that such disasters would occur. I argue that this is not what Wittgenstein is doing. Rather, he is scrutinizing the meaning and philosophical import of Turing's claim—showing how Turing is wavering between making an empirical prediction and a logical observation, and that it is only through this wavering that Turing can believe that he has provided a proper explanation of why contradictory calculi are mathematically defective. (shrink)

Through a proof of concept in SWI-Prolog, this paper demonstrates a business transaction model by which the trading partners can derive their own, personal perspective from shared data. The demonst...

I investigate why Frege rejected the theory of types, as Russell presented it to him in their correspondence. Frege claims that it commits one to violations of the law of excluded middle, but this complaint seems to rest on a dogmatic refusal to take Russell’s proposal seriously on its own terms. What is at stake is not so much the truth of a law of logic, but the structure of the hierarchy of the logical categories, something Frege seems to neglect. (...) To come to a better understanding of Frege’s response, I proceed to investigate his conception of the nature of the logical categories, and how it differs from Russell’s. I argue that, for Frege, our grasp of the logical categories cannot be severed from our grasp of the Begriffsschrift notation itself. Russell, on the other hand, attaches no such importance to notation. From Frege’s point of view, Russell has not succeeded in presenting an alternative conception of the logical hierarchy, since such a conception must go in tandem with the development of a notation. Moreover, Frege has good reasons to think that Russell’s proposal does not admit of a suitable notation. (shrink)

Moral purism is a commonly held view on moral worthiness and how to identify it in concrete cases. Moral purists long for a moral world in which (business) people—at least sometimes—act morally worthy, but in concrete cases they systematically discount good deeds as grounded in self-interest. Moral purism evokes moral cynicism. Moral cynicism is a problem, both in society at large and the business world. Moral cynicism can be fought by refuting moral purism. This article takes issue with moral purism. (...) The common strategy to tackle moral purism is to reject the exclusion thesis which states that self-interest and the ‘pure’ moral motive (and thus moral worthiness) exclude each other. We develop a different strategy. We argue that moral purists are mistaken in the way they judge moral worthiness in concrete cases. They employ the wrongprocedureand the wrongcriteria.We develop a proper procedure and proper criteria. We build on Kant, who we argue is unfairly regarded as the champion of moral purism. In order to see how Kant can develop a consistent (non-purist) philosophy, the exclusion thesis must be embedded in Kant’s transcendental philosophy. Properly embedded, Kant turns out to be both anti-purist and anti-cynical. (shrink)