In late February and early March 2020, Italy became the European epicenter of the COVID-19 pandemic. Despite increasingly stringent containment measures enforced by the government, the health system faced an enormous pressure, and extraordinary efforts were made in order to increase overall hospital beds’ availability and especially ICU capacity. Nevertheless, the hardest-hit hospitals in Northern Italy experienced a shortage of ICU beds and resources that led to hard allocating choices. At the beginning of March 2020, the Italian Society of Anesthesia, (...) Analgesia, Resuscitation, and Intensive Care issued recommendations aimed at supporting physicians in prioritizing patients when the number of critically ill patients overwhelm the capacity of ICUs. One motivating concern for the SIAARTI guidance was that, if no balanced and consistent allocation procedures were applied to prioritize patients, there would be a concrete risk for unfair choices, and that the prevalent “first come, first served” principle would lead to many avoidable deaths. Among the drivers of decision for admission to ICUs, age, comorbidities, and preexisting functional status were included. The recommendations were criticized as ageist and potentially discriminatory against elderly patients. Looking forward to the next steps, the Italian experience can be relevant to other parts of the world that are yet to see a significant surge of COVID-19: the need for transparent triage criteria and commonly shared values give the Italian recommendations even greater legitimacy. (shrink)

Terms of service of on-line platforms too often contain clauses that are potentially unfair to the consumer. We present an experimental study where machine learning is employed to automatically detect such potentially unfair clauses. Results show that the proposed system could provide a valuable tool for lawyers and consumers alike.

In combating the ongoing global health threat of the COVID-19 pandemic, decision-makers have to take actions based on a multitude of relevant health data with severe potential consequences for the affected patients. Because of their presumed advantages in handling and analyzing vast amounts of data, computer systems of algorithmic decision-making are implemented and substitute humans in decision-making processes. In this study, we focus on a specific application of ADM in contrast to human decision-making, namely the allocation of COVID-19 vaccines to (...) the public. In particular, we elaborate on the role of trust and social group preference on the legitimacy of vaccine allocation. We conducted a survey with a 2 × 2 randomized factorial design among n = 1602 German respondents, in which we utilized distinct decision-making agents and prioritization of a specific social group as design factors. Our findings show that general trust in ADM systems and preference for vaccination of a specific social group influence the legitimacy of vaccine allocation. However, contrary to our expectations, trust in the agent making the decision did not moderate the link between social group preference and legitimacy. Moreover, the effect was also not moderated by the type of decision-maker. We conclude that trustworthy ADM systems must not necessarily lead to the legitimacy of ADM systems. (shrink)

Discussions about the merits and shortcomings of non-inferiority trials are becoming increasingly common in the medical community and among regulatory agencies. However, criticisms targeting the ethical standing of non-inferiority trials have often been mistargeted. In this article we review the ethical standing of trials of non-inferiority. In the first part of the article, we outline a consequentialist position according to which clinical trials are best conceived as epistemic tools aimed at fostering the proper ends of medicine. According to this view, (...) clinical trials are means to ends, and thus their moral status depends both on how well they perform as means to reach desired ends and on which ends they are meant to achieve. Building upon this normative framework in the next two sections we analyze the specific ethical issues raised by non-inferiority trials. By making it clear that clinical trials are just epistemic tools – i.e. means to certain ends – it is possible not only to clarify the conceptual debate over a fundamental issue in clinical research, but also to identify which ethically relevant considerations ought to be addressed in setting up a non-inferiority trial. (shrink)

Global environmental problems, such as global warming, pollution, or deforestation, are critical issues that require a rapid and common response. In this context, companies play a decisive role in achieving environmental objectives through the ecological knowledge they can store and manage. In this context, the present research focuses its interest on analyzing how the set of green intangibles possessed by organizations, i.e., Green Intellectual Capital, affects their Green Performance. Specifically, the study shows how GP is influenced by GIC through the (...) mediating role of the Green Innovation variable. Therefore, the research questions to be answered by this study are as follows: Does GIC influence environmental performance? Does GI mediate the GIC-GP relationship? What actions can companies take to improve their GP? There are several reasons that have led us to carry out this research. First, there is little empirical evidence of the relationships proposed in this study. Second, to the best of our knowledge, there is no previous research that has contextualized the relationships raised in the wine industry, thus representing an advance in the comprehension of the constructs studied. Third, GIC represents an incipient field of study that needs to be developed and established within the literature linked to Intellectual Capital. In order to achieve the proposed objectives, data from a survey of 202 wineries in Spain were used and a quantitative approach was followed using Structural Equation Modeling. The results of the research indicate that there is a positive and significant relationship between GIC and GP. In addition, GI partially mediates the relationship between these two variables, playing a key role in the environmental management of wineries. The theoretical and practical contributions of the study improve the understanding of the relationships raised, being a pioneering study due to its contextualization in the wine industry, as well as providing a series of guidelines for both environmental managers and winemakers to improve their GP. (shrink)

One of the most important devices in the management and control of our global societies is the scenario-planning. In this regard, this paper analyses the impact that the massive use of these devices implies to our society. Specifically, it is used as an analytical approach the concepts of difference, différance and destituent power. These theoretical proposals, which have been regarded as important dimensions of resistance and liberation, paradoxically are relevant to understanding the operation of the scenario-planning. Therefore, this paper warns (...) of the need to try new forms-of-thought that allow us to overcome the danger of our best philosophy captured by new machines of control. Uno de los dispositivos más utilizados en la gestión y control de nuestras actuales sociedades globales son las técnicas de construcción de escenarios. En este sentido, el presente artículo analiza el impacto que la utilización masiva de estos dispositivos entraña para nuestra sociedad. Específicamente, se utilizará como enfoque analítico el concepto de diferencia de Deleuze, la différance de Derrida y lo destituyente en Agamben. Dichas propuestas teóricas, que permanentemente han sido consideradas como dimensiones de resistencia, subversión y liberación, se muestran paradójicamente pertinentes para comprender el funcionamiento de las técnicas de construcción de escenarios ficcionales. Por ende, el presente art&iacut e la necesidad de ensayar nuevas formas-de-pensamiento que nos permitan sortear el peligro de fagocitación de nuestra mejor filosofía por parte de nuevas maquinarias de control. (shrink)

. This paper investigates the mechanisms of knowledge production of twenty-first century robotics-inspired morphology. How robotics influences investigations into the structure, development, and change of organic forms? Which definition of form is presupposed by this new approach to the study of form? I answer these questions by investigating how robots are used to understand and generate new questions about the locomotion of extinct animals in the first case study and in high-performance fishes in the second case study. After having illustrated (...) the landscape of twentieth-century morphology, I will reflect on the definition of form adopted in twenty-first century robotics-inspired morphology as well as on the differences between this approach to the study of form and the so-called nature-inspired disciplines, such as bionics or biomimetics. In the conclusion, I suggest that we are now in a material turn in morphology, characterized by the coexistence of the robotic, the virtual, and the real, which enables an understanding of how the structures and dynamics of shapes change over time. (shrink)

This paper presents two studies on the development and validation of a ten-item scale of epistemic vice and the relationship between epistemic vice and misinformation and fake news. Epistemic vices have been defined as character traits that interfere with acquiring, maintaining, and transmitting knowledge. Examples of epistemic vice are gullibility and indifference to knowledge. It has been hypothesized that epistemically vicious people are especially susceptible to misinformation and conspiracy theories. We conducted one exploratory and one confirmatory observational survey study on (...) Amazon Mechanical Turk among people living in the United States (total _N_ = 1737). We show that two psychological traits underlie the range of epistemic vices that we investigated: indifference to truth and rigidity. Indifference manifests itself in a lack of motivation to find the truth. Rigidity manifests itself in being insensitive to evidence. We develop a scale to measure epistemic vice with the subscales indifference and rigidity. The Epistemic Vice Scale is internally consistent; has good convergent, divergent, and discriminant validity; and is strongly associated with the endorsement of misinformation and conspiracy theories. Epistemic vice explains additional variance in the endorsement of misinformation and conspiracy theories over and above demographic and related psychological concepts and shows medium to large effect sizes across outcome measures. We demonstrate that epistemic vice differs from existing psychological constructs, and show that the scale can explain individual differences in dealing with misinformation and conspiracy theories. We conclude that epistemic vice might contribute to “postfactive” ways of thinking. (shrink)

Debates on situated affectivity have mainly focused on tools that exert some positive influence on affective experience. Far less attention has been paid to artifacts that interact with the expression of affect, or to those that exert some negative influence. To shed light on that shadowy corner of our affective social lives, I describe the workings of an atypical socio-affective artifact, namely, sunglasses. Drawing on insights from psychology and other social sciences, I construe sunglasses as a social shield that helps (...) us block spontaneous emotional expressions, as well as affecting other social processes that heavily depend on the eye region: gaze direction detection, identity recognition, and the sense of intimacy afforded by eye contact. (shrink)

Young children interpret some acts performed by adults as normatively governed, that is, as capable of being performed either rightly or wrongly. In previous experiments, children have made this interpretation when adults introduced them to novel acts with normative language (e.g. ‘this is the way it goes’), along with pedagogical cues signaling culturally important information, and with social-pragmatic marking that this action is a token of a familiar type. In the current experiment, we exposed children to novel actions with no (...) normative language, and we systematically varied pedagogical and social-pragmatic cues in an attempt to identify which of them, if either, would lead children to normative interpretations. We found that young 3-year-old children inferred normativity without any normative language and without any pedagogical cues. The only cue they used was adult socialpragmatic marking of the action as familiar, as if it were a token of a well-known type (as opposed to performing it, as if inventing it on the spot). These results suggest that – in the absence of explicit normative language – young children interpret adult actions as normatively governed based mainly on the intentionality (perhaps signaling conventionality) with which they are performed. (shrink)

In the present article, I review some evidence that shows how body odor disgust sensitivity plays a central role in the so-called behavioral immune system, a set of processes aimed at detecting, emotionally reacting, and behaviorally avoiding pathogen threats. I also report empirical evidence on how the BODS relates to social attitudes such as authoritarianism, xenophobia, and condemnation of “impure” moral violations. This research is interpreted from an Evolutionary psychology framework.

In his 1916 review paper on general relativity, Einstein made the often-quoted oracular remark that all physical measurements amount to a determination of coincidences, like the coincidence of a pointer with a mark on a scale. This argument, which was meant to express the requirement of general covariance, immediately gained great resonance. Philosophers such as Schlick found that it expressed the novelty of general relativity, but the mathematician Kretschmann deemed it as trivial and valid in all spacetime theories. With the (...) relevant exception of the physicists of Leiden (Ehrenfest, Lorentz, de Sitter, and Nordström), who were in epistolary contact with Einstein, the motivations behind the point-coincidence remark were not fully understood. Only at the turn of the 1960s did Bergmann (Einstein’s former assistant in Princeton) start to use the term ‘coincidence’ in a way that was much closer to Einstein’s intentions. In the 1980s, Stachel, projecting Bergmann’s analysis onto his historical work on Einstein’s correspondence, was able to show that what he started to call ‘the point-coincidence argument’ was nothing but Einstein’s answer to the infamous ‘hole argument’. The latter has enjoyed enormous popularity in the following decades, reshaping the philosophical debate on spacetime theories. The point-coincidence argument did not receive comparable attention. By reconstructing the history of the argument and its reception, this paper argues that this disparity of treatment is not justified. This paper will also show that the notion that only coincidences are observable in physics marks every critical step of Einstein’s struggle with the meaning of coordinates in physics. (shrink)

Manche Menschen haben hohe Erwartungen an die Wissenschaft. Manche Menschen erwarten von der Wissenschaft, dass sie die Welt vollständig beschreiben wird. Die Wissenschaft wird diese Erwartung aber sicher nie erfüllen – zumindest dann nicht, wenn sie versucht, alle Wahrheiten über die Welt einzeln aufzuzählen. Aber auch der Versuch aus einer endlichen Anzahl von Annahmen eine vollständige Beschreibung zu reduzieren ist zum Scheitern verurteilt.

In his Zur Einstein’schen Relativitätstheorie, Ernst Cassirer presents relativity theory as the last manifestation of the tradition of the “physics of principles” that, starting from the nineteenth century, has progressively prevailed over that of the “physics of models.” In particular, according to Cassirer, the relativity principle plays a role similar to the energy principle in previous physics. In this article, I argue that this comparison represents the core of Cassirer’s neo-Kantian interpretation of relativity. Cassirer pointed out that before and after (...) Kant, the history of physics presents significant instances in which the search for formal conditions that the laws of nature must satisfy preceded and made possible the direct search for such laws. In his earlier years, Cassirer seems to have regarded principles like the energy principle, the relativity principle, and the principle of least action as a constitutive but provisional form of a priori, imposing specific limitations on the form of the allowable laws of nature. Only in his later years, by attributing an autonomous status to these statements of principle, did Cassirer attribute a definitive but merely regulative meaning to the a priori. This does not impose specific requirements on natural laws but only a motivation to search for them. (shrink)

El artículo desenvuelve un esquema del pensamiento de Gadamer con relación a su teoría estética donde confluyen juego y tradición, salpicados aquí y allá de matices y contrastes, principalmente heideggerianos, sin descuidar aportaciones más críticas como las de Adorno. Comienza por un recorrido alrededor del juego. Desde ahí, se adentra en el proceso de transformación, en la construcción, en su sentido, en su necesidad. Prosigue abordando el significado de las obras, si es que alguno transporta. Y termina fundiendo verdad con (...) belleza, cuestionando la actualidad de este posicionamiento. (shrink)

Research on organizational epistemic vice alleges that some organizations are epistemically malevolent, i.e. they habitually harm others by deceiving them. Yet, there is a lack of empirical research on epistemic malevolence. We connect the discussion of epistemic malevolence to the empirical literature on organizational deception. The existing empirical literature does not pay sufficient attention to the impact of an organization’s ability to control compromising information on its deception strategy. We address this gap by studying eighty high-penalty corporate misconduct cases between (...) 2000 and 2020 in the United States. We find that organizations use two different strategies to deceive: Organizations ‘sow doubt’ when they contest information about them or their impacts that others have access to. By contrast, organizations ‘exploit trust’ when they deceive others by obfuscating, concealing, or falsifying information that they themselves control. While previous research has focused on cases of ‘sowing doubt’, we find that organizations ‘exploit trust’ in the majority of cases that we studied. This has important policy implications because the strategy of ‘exploiting trust’ calls for a different response from regulators and organizations than the strategy of ‘sowing doubt’. (shrink)

A spatial logic is a formal language interpreted over any class of structures featuring geometrical entities and relations, broadly construed. In the past decade, spatial logics have attracted much attention in response to developments in such diverse fields as Artificial Intelligence, Database Theory, Physics, and Philosophy. The aim of this handbook is to create, for the first time, a systematic account of the field of spatial logic. The book comprises a general introduction, followed by fourteen chapters by invited authors. Each (...) chapter provides a self-contained overview of its topic, describing the principal results obtained to date, explaining the methods used to obtain them, and listing the most important open problems. Jointly, these contributions constitute a comprehensive survey of this rapidly expanding subject. (shrink)

In den ersten Jahrzehnten des zwanzigsten Jahrhunderts sehen Philosophen Geometrie und Anschauung auseinanderdriften und ziehen daraus divergierende (auch) kulturphilosophische Schlussfolgerungen. Liegt hier eine Krise der Geometrie vor, weil sie sich der Anschauung entfremdet? Oder nicht vielmehr eine Krise der Anschauung? Oder ist auch diese Krise nur eine in Anführungszeichen? Ist der Prozess einer der Entfremdung oder der Emanzipation? Mein Beitrag, der auf so unterschiedliche Autoren wie u.a. Frege, Husserl, Spengler, Cassirer, Hahn und Waismann eingeht, zeigt auch am Beispiel der visuellen (...) Linie die Bandbreite der damaligen Positionen. In the first decades of the 20th century, philosophers observed a widening gap between geometry and intuition. Divergent conclusions were drawn, also with different implications for the philosophy of culture(s). Was this to be understood as a crisis of geometry, alienating itself from intuition? Or was it rather a crisis of intuition? Or was it just some sort of ›mock-crisis‹? Was it a process of alienation or rather of emancipation? My contribution, which deals with authors as diverse as Frege, Husserl, Spengler, Cassirer, Hahn and Waismann, demonstrates the broad spectrum of stances held at the time based on the example of the visual line. (shrink)

Bricks and boxes -- Between Scylla and Charybdis -- Lessons from the history of science -- Placeholders -- Black-boxing 101 -- History of science 'black-boxing style' -- Diet mechanistic philosophy -- Emergence reframed -- The fuel of scientific progress -- Sailing through the strait.

Between 1909 and 1913, Berlin’s Museum für Naturkunde (Berlin Museum of Natural History) unearthed more than 225 tons of fossils in former German East Africa and transported them to Berlin. Among them were the bones of Brachiosaurus brancai, which would eventually become the biggest mounted dinosaur in the world. By analyzing the social and communicative strategies that made this expedition possible, this paper aims to reveal several aspects of natural history knowledge production at the end of the long nineteenth century. (...) Using rhetoric, the director of the Geological–Paleontological Museum in Berlin, Wilhelm von Branca, conducted a highly successful campaign to market the dinosaurs in Prussia and to convince public opinion and the Prussian central state of the value of paleontology. He fired the Prussian imagination and took advantage of the competitive urge to emulate American paleontology and industry. This work examines how his public relations strategies shaped the German biological “landscape” of the first decades of the twentieth century. It asks: when and under what conditions did paleontology successfully appeal to the public? How does communication dictate, shape, and constrain the development of a specific epistemic agenda? And what kind of power do the public and money have? (shrink)

This paper argues that the path integral formulation of quantum mechanics suggests a form of holism for which the whole (total ensemble of paths) has properties that are not strongly reducible to the properties of the parts (the single trajectories). Feynman’s sum over histories calculates the probability amplitude of a particle moving within a boundary by summing over all the possible trajectories that the particle can undertake. These trajectories and their individual probability amplitudes are thus necessary in calculating the total (...) amplitude. However, not all possible trajectories are differentiable, thus suggesting that they are not physical possibilities, but only mathematical entities. It follows that if the possible differentiable trajectories are taken to be part of the physical system, they are not sufficient to calculate the total probability amplitude. The conclusion is that the total ensemble is weakly non-supervenient upon the physically possible trajectories. (shrink)

In 1912, Ernst Cassirer contributed to the special issue of the Kant-Studien that honored Hermann Cohen's retirement—his mentor and teacher, and the recognized founding father of the so-called 'Marburg school' of Neo-Kantianism. In the context of an otherwise rather conventional presentation of Cohen's interpretation of Kant, Cassirer made a remark that is initially surprising. It is “anything but accurate,” he wrote, to regard Cohen's philosophy as focused “exclusively on the mathematical theory of nature,” as is usually done. A reconstruction of (...) the genesis of Cohen's thought, Cassirer continued, would already refute this interpretation. Actually, “[t]he... (shrink)

In considering what it means to lead organizations effectively and ethically, the literature comprising spirituality at work and spiritual leadership theory has become highly influential, especially in the USA. It has also attracted significant criticism. While in this paper, we endorse this critique, we argue that the strand of literature which purportedly takes a Christian standpoint within the wider SAW school of thought, largely misconstrues and misapplies the teaching of its founder, Jesus. As a result, in dismissing the claims and (...) application of SAW and SLT, there is a real risk that we lose the vital contribution of Christian thought, not least some of the timeless counter-cultural wisdom of Jesus which, we contend, offers a vital foundation to the practice of ethical leadership and business ethics in organizations. In proposing a way forward, two thorny issues which face all leaders are addressed: dealing with ego and closing the gap between what we say and what we do. The more we understand about the dynamics of human nature, the more we learn about the profundity of Jesus’ teachings. We then propose a number of ways in which Jesus-centred ethical leadership can be practised. Each is radical and each implies risk: both the personal risk of inner renewal arising from repentance as a doorway to personal integrity, as well as the risk of opposing unethical practices and promoting the excellence of core practices in the workplace. (shrink)

This book fills a major gap in the ever-increasing secondary literature on Hannah Arendt's political thought by providing a dedicated and coherent treatment of the many, various and interesting things which Arendt had to say about law. Often obscured by more pressing or more controversial aspects of her work, Arendt nonetheless had interesting insights into Greek and Roman concepts of law, human rights, constitutional design, legislation, sovereignty, international tribunals, judicial review and much more. This book retrieves these aspects of her (...) legal philosophy for the attention of both Arendt scholars and lawyers alike. The book brings together lawyers as well as Arendt scholars drawn from a range of disciplines (philosophy, political science, international relations), who have engaged in an internal debate the dynamism of which is captured in print. Following the editors' introduction, the book is split into four Parts: Part I explores the concept of law in Arendt's thought; Part II explores legal aspects of Arendt's constitutional thought: first locating Arendt in the wider tradition of republican constitutionalism, before turning attention to the role of courts and the role of parliament in her constitutional design. In Part III Arendt's thought on international law is explored from a variety of perspectives, covering international institutions and international criminal law, as well as the theoretical foundations of international law. Part IV debates the foundations, content and meaning of Arendt's famous and influential claim that the 'right to have rights' is the one true human right. (shrink)

Are concepts stable entities, unchanged from context to context? Or rather are they context-dependent structures, created on the fly? We argue that this does not constitute a genuine dilemma. Our main thesis is that the more a pattern of features is general and shared, the more it qualifies as a concept. Contextualists have not shown that conceptual structures lack a stable, general core, acting as an attractor on idiosyncratic information. What they have done instead is to give a contribution to (...) the comprehension of how conceptual structure organized around such a stable core can produce contextually appropriate representations on demand. (shrink)

We address recent interpretations of infant performance on spontaneous false belief tasks. According to most views, these experiments show that human infants attribute mental states from a very young age. Focusing on one of the most clearly worked out, minimalist versions of this idea, Butterfill and Apperly's "minimal theory of mind" framework, we defend an alternative characterization: the minimal theory of rational agency. On this view, rather than conceiving of social situations in terms of states of an enduring mental substance (...) animating agents, infant interpreters parse observed bouts of behavior and their contexts into goals, rational means to those goals, and available information. In other words, the social ontology of infant interpreters consists in goal-directed, informed bouts of behavior, by non-enduring agents, rather than agents animated by states of enduring, unobservable minds. We discuss a number of experiments that support this interpretation of infant socio-cognitive competence. (shrink)

Foucault and Sellars are representatives of conflicting philosophical traditions: whereas Foucault famously insisted that “power is everywhere,” Sellars proposed the well-known scientia mensura dictum. The tension between the two perspectives seems to be so strong that each of them ends up reducing the other to an epiphenomenal illusion. In this article, I shall attempt to show that the works of Sellars and Foucault are not necessarily irreconcilable. The common ground for this dialogue is what I shall define as a historico-practical (...) conception of science. I will build this concept by tracing a connection between the Foucauldian notion of “conditions of possibility” of science and Sellars’s thesis about the “indispensability” of the manifest image. Finally, I will argue that this conception of science problematizes the clash between the scientific and manifest images of the world, paving the way for a different relationship between naturalism and critical theory. (shrink)

We investigated motor resonance in children using a priming paradigm. Participants were asked to judge the weight of an object shortly primed by a hand in an action-related posture or a non action-related one . The hand prime could belong to a child or to an adult. We found faster response times when the object was preceded by a grasp hand posture . More crucially, participants were faster when the prime was a child’s hand, suggesting that it could belong to (...) their body schema, particularly when the child’s hand was followed by a light object . A control experiment helped us to clarify the role of the hand prime. To our knowledge this is the first behavioral evidence of motor simulation and motor resonance in children. Implications of the results for the development of the sense of body ownership and for conceptual development are discussed. (shrink)

Over the past decades, the notions of organic form and morphology—a scientific field historically associated with the eighteenth century polymath Johann Wolfgang von Goethe —have stealthy re-assumed a central role in various scientific disciplines. Although the study of organic form was apparently excluded from the main stage of evolutionary theory and biological sciences during the second half of the twentieth century, since morphology was considered as a descriptive and ancillary science unable to contribute to the neo-Darwinian synthesis of evolution1, morphological (...) concepts and approaches have now been re-brought onto the central stage of mainstream science.2In fact, several interdisciplinary... (shrink)

This paper attempts to show how the logical empiricists’ interpretation of the relation between geometry and reality emerges from a “collision” of mathematical traditions. Considering Riemann’s work as the initiator of a 19th century geometrical tradition, whose main protagonists were Helmholtz and Poincaré, the logical empiricists neglected the fact that Riemann’s revolutionary insight flourished instead in a non-geometrical tradition dominated by the works of Christoffel and Ricci-Curbastro roughly in the same years. I will argue that, in the attempt to interpret (...) general relativity as the last link of the chain Riemann–Helmholtz–Poincaré–Einstein, logical empiricists were led to argue that Einstein’s theory of gravitation mainly raised a problem of mathematical under-determination, i.e. the discovery that there are physical differences that cannot be expressed in the relevant mathematical structure of the theory. However, a historical reconstruction of the alternative Riemann–Christoffel–Ricci–Einstein line of evolution shows on the contrary that the main philosophical issue raised by Einstein’s theory was instead that of mathematical over-determination, i.e. the recognition of the presence of redundant mathematical differences that do not have any correspondence in physical reality. (shrink)

In 1909, Ehrenfest published a note in the Physikalische Zeitschrift showing that a Born rigid cylinder could not be set into rotation without stresses, as elements of the circumference would be contracted but not the radius. Ignatowski and Varićak challenged Ehrenfest’s result in the same journal, arguing that the stresses would emerge if length contraction were a real dynamical effect, as in Lorentz’s theory. However, no stresses are expected to arise, according to Einstein’s theory, where length contraction is only an (...) apparent effect due to an arbitrary choice of clock synchronization. Ehrenfest and Einstein considered this line of reasoning dangerously misleading and took a public stance in the Physikalische Zeitschrift, countering that relativistic length contraction is both apparent and real. It is apparent since it disappears for the comoving observer, but it is also real since it can be experimentally verified. By drawing on his lesser-known private correspondence with Varićak, this paper shows how Einstein used the Ehrenfest paradox as a tool for an ‘Einsteinian pedagogy’. Einstein’s argumentative stance is contrasted with Bell’s use of the Dewan-Beran thread-between-spaceships paradox to advocate for a ‘Lorentzian pedagogy’. The paper concludes that the disagreement between the two ways of ‘teaching special relativity’ stems from divergent interpretations of philosophical categories such as ‘reality’ and ‘appearance’. (shrink)