Online research in philosophy

Fictional realism, i.e., the view that because fictions exist, fictional characters exist as well, has recently been accused of leading to inconsistency generated by phenomena of indeterminacy and inconsistency in fiction. We examine in detail four arguments against fictional realism, and present a version of fictional realism which can withstand those arguments.

In recent work, Louis deRosset (Philosophical Studies 149:73–97, 2010) has argued that priority theorists, who hold that truths about macroscopic objects can be metaphysically explained without reference to such things, cannot meet an independently motivated constraint upon good explanation. By clarifying the nature of the priority theorist’s project, I argue that deRosset’s argument fails to establish its conclusion.

It is a well-known fact that Ernst Cassirer was inspired by his colleague, the biologist Jakob von Uexküll at the university of Hamburg. This paper claims this inspiration was double—affecting both Cassirer’s philosophical anthropology and Cassirer’s epistemology of biology, but in two rather different ways. Thus, the paper intends to shed light on a corner of the history of the development of German thought of the interwar period. It may also have an actual interest because both Cassirer and Uexküll enjoy, (...) for the time being and each in their way, a renaissance, e.g. in the recent field of biosemiotics. (shrink)

The most interesting and completely overlooked aspect of Ludwig von Mises’s theory of probability is the total absence of any explicit definition for probability in his theory. This paper examines Mises’s theory of probability in light of the fact that his theory possesses no definition for probability. It is argued, [...].

The physiologist and neo-Kantian philosopher Johannes von Kries (1853-1928) wrote one of the most philosophically important works on the foundation of probability after P.S. Laplace and before the First World War, his Principien der Wohrscheinlich-keitsrechnung (1886, repr. 1927). In this book, von Kries developed a highly original interpretation of probability, which maintains it to be both logical and objectively physical. After presenting his approach I shall pursue the influence it had on Ludwig Wittgenstein and Friedrich Waismann. It seems that von (...) Kries's approach had more potential than recognized in his time and that putting Waismann's and Wittgenstein's early work in a von Kries perspective is able to shed light on the notion of an elementary proposition. (shrink)

This article provides a summary overview of the ideas on medical anthropology and anthropological medicine of the German philosopher-psychiatrist Viktor Emil von Gebsattel (1883–1974), and discusses in more detail his views on the doctor-patient relationship. It is argued that Von Gebsattel''s warning against a dehumanization of medicine when the person of both patient and physician are not explicitly present in their relationship remains valid notwithstanding the modern emphasis on respect for patient (and provider) autonomy.

Preference is a key area where analytic philosophy meets philosophical logic. I start with two related issues: reasons for preference, and changes in preference, first mentioned in von Wright’s book The Logic of Preference but not thoroughly explored there. I show how these two issues can be handled together in one dynamic logical framework, working with structured two-level models, and I investigate the resulting dynamics of reason-based preference in some detail. Next, I study the foundational issue of entanglement between preference (...) and beliefs, and relate the resulting richer logics to belief revision theory and decision theory. (shrink)

In the paper it is shown that every physically sound Birkhoff – von Neumann quantum logic, i.e., an orthomodular partially ordered set with an ordering set of probability measures can be treated as partial infinite-valued Łukasiewicz logic, which unifies two competing approaches: the many-valued, and the two-valued but non-distributive, which have co-existed in the quantum logic theory since its very beginning.

Hermann von Helmholtz (1821-1894) participated in two of the most significant developments in physics and in the philosophy of science in the 19th century: the proof that Euclidean geometry does not describe the only possible visualizable and physical space, and the shift from physics based on actions between particles at a distance to the field theory. Helmholtz achieved a staggering number of scientific results, including the formulation of energy conservation, the vortex equations for fluid dynamics, the notion of free energy (...) in thermodynamics, and the invention of the ophthalmoscope. His constant interest in the epistemology of science guarantees his enduring significance for philosophy. (shrink)

Finland is internationally known as one of the leading centers of twentieth century analytic philosophy. This volume offers for the first time an overall survey of the Finnish analytic school. The rise of this trend is illustrated by original articles of Edward Westermarck, Eino Kaila, Georg Henrik von Wright, and Jaakko Hintikka. Contributions of Finnish philosophers are then systematically discussed in the fields of logic, philosophy of language, philosophy of science, history of philosophy, ethics and social philosophy. Metaphilosophical reflections on (...) the nature of philosophy are highlighted by the Finnish dialogue between analytic philosophy, phenomenology, pragmatism, and critical theory. (shrink)

The renewed interest in the foundations of quantum statistical mechanics in recent years has led us to study John von Neumann’s 1929 article on the quantum ergodic theorem. We have found this almost forgotten article, which until now has been available only in German, to be a treasure chest, and to be much misunderstood. In it, von Neumann studied the long-time behavior of macroscopic quantum systems. While one of the two theorems announced in his title, the one he calls the (...) “quantum H-theorem,” is actually a much weaker statement than Boltzmann’s classical H-theorem, the other theorem, which he calls the “quantum ergodic theorem,” is a beautiful and very non-trivial result. It expresses a fact we call “normal typicality” and can be summarized as follows: For a “typical” finite family of commuting macroscopic observables, every initial wave function ψ0 from a micro-canonical energy shell so evolves that for most times t in the long run, the joint probability distribution of these observables obtained from ψt is close to their micro-canonical distribution. (shrink)

n diesem Kapitel soll das Problem ›Was genstand dieses Kapitels. Wir werden sehen, ist Kunst?‹, wie es sich für die analytische dass sich diese Adäquatheitsbedingungen aus Kunstphilosophie stellt, erläutert und eine Reiunserer Auffassung von analytischer Philosohe von »Adäquatheitsbedingungen« für seine phie heraus begründen lassen. Dieses zweite möglichen Lösungen formuliert werden. Adä- Kapitel bereitet also gewissermaßen den theoquatheitsbedingungen sind dabei Anforderunretischen Boden für die Folgekapitel. gen, die wir an eine potentielle Problemlösung Wie aus der Charakterisierung der analystellen und die eine Bewertung (...) der verschietischen Philosophie im ersten Kapitel bereits denen vorgebrachten Lösungsvorschläge zudeutlich geworden sein sollte, ist ein Charaklassen. Solche Adäquatheitsbedingungen erteristikum der analytischen Philosophie in jegeben sich zum Teil aus der Wissenschaftsdem Fall in der arbeitsteiligen Organisation ihgeschichte einer Disziplin: Vorgebrachte Lö- rer Forschungsanstrengungen zu sehen – ein sungsvorschläge können bestimmte Aspekte Charakteristikum, das Rudolf Carnap bereits eines Problems erhellen, stoßen bei anderen  im Vorwort zu seiner Habilitationsschrift Aspekten aber unter Umständen auf neue Pro-. (shrink)

From a historico-cultural point of view the notion of normativity is closely tied to the apparently descriptive category of normality. This relation seems even tighter on the level of experience. As Husserl shows that normality, in the form of concordance and optimality, is a constitutive feature of experience itself. But in what sense can we speak of normativity in the realm of experience? Husserl himself saw no need to pose this question. But to explain the possibility of normal and coherent (...) perception one needs more than merely formal criteria (like concordance and its adjustment to an optimum): one must also take into account the attentional nature of perception. In this regard, the present paper will consider Husserl’s early treatment of attention and integrate it with its genetic implications on the level of affection. Doing so shows that subjective experience is characterized by a preference- structure, motivated by the embodied subject’s individual and cultural horizons of interest. It is this that allows one to speak of a precursor to normativity in the realm of experience. Moreover it can be argued that interest not only influences perception from the lowest level, but can be seen as a precondition for any current attention. Thus to speak of normativity in experience in this stronger sense, means not only that perception already contains traces of intersubjective norms; it also means that such norms determine what you can see at all. --------------------------------------------------------------------------Aus kulturgeschichtlicher Perspektive steht der Begriff Normativität in einer engen Verbindung mit der vermeintlich deskriptiven Kategorie der Normalität. Erweist sich diese Relation aber bereits auf der Ebene der sinnlichen Erfahrung als grundlegend, hat dies weitreichende Konsequenzen. Wie Husserl zeigt, ist Normalität im Sinne der formalen Kriterien von Einstimmigkeit und Optimalität selbst konstitutiv für jede Erfahrung. Um darüber hinaus die Normativität innerhalb der Erfahrung in den Blick zu bekommen, soll in diesem Beitrag die phänomenologische Beschreibung um einen wichtigen Aspekt ergänzt werden: die Aufmerksamkeit. Zu den formalen Normalitätskriterien muss eine konkrete subjektive Präferenz hinzu treten, die eine Differenzierung der Wahrnehmungsinhalte leistet. Anders lässt sich eine normale und kohärente Erfahrung nicht hinreichend erklären. Husserls frühe Arbeiten zur Aufmerksamkeit und Intentionalität sollen daher mit späteren genetischen Analysen zu einer umfassenderen Konzeption von Aufmerksamkeit verbunden werden. Hierbei wird deutlich, dass jede subjektive Erfahrung durch ihre präferenzielle Struktur charakterisiert ist, die sowohl von individuellen als auch kulturellen Interessenshorizonten des leiblichen Subjekts motiviert ist. Dies erlaubt es, von einer rudimentären Form der Normativität innerhalb der Erfahrung zu sprechen. Diese immer schon intersubjektiven Interessensdimensionen beeinflussen weiterhin jedes Aufmerksamkeitsverhalten von den untersten Stufen der Wahrnehmung bis hin zu höheren Geistesakten. Normativität in einem starken Sinne meint damit nicht nur, dass sich die Spuren intersubjektiver Normen bereits innerhalb der Wahrnehmung finden lassen. Vielmehr bestimmen diese Normen, was wir im Einzelfall überhaupt sehen können. (shrink)

Constructivism rejects the metaphysical position that “truth”, and thus knowledge in science, can represent an “objective” reality, independent of the knower. It modifies the role of knowledge from “true” representation to functional viability. In this interview, Ernst von Glasersfeld, the leading proponent of Radical Constructivism underlines the inaccessibility of reality, and proposes his view that the function of cognition is adaptive, in the biological sense: the adaptation is the result of the elimination of all that is not adapted. There is (...) no rational way of knowing anything outside the domain of our experience and we construct our world of experiences. In addition to these philosophical claims, the interviewee provides some personal insights; he also gives some suggestions about better teaching and problem solving. These are the aspects of constructivism that have had a major impact on instruction and have modified the manner many of us teach. The process of teaching as linguistic communication, he says, needs to change in a way to involve actively the students in the construction of their knowledge. Because knowledge is not a transferable commodity, learning is mainly identified with the activity of the construction of personal meaning. This interview also provides glimpses on von Glasersfeld’s life. (shrink)

Research into learners' ideas about science suggests that students often have alternative conceptions about important science concepts. Because of this dissatisfaction, constructivism has been adopted as a theoretical framework by many teachers and researchers, and it has had a curricular influence in many countries. Constructivism is much more than an educational doctrine and we are aware that a ‘science war’ about the possibility of objectivity is in progress. ‘Constructivism’ cannot necessary be a package deal: it must be possible to accept (...) educational suggestions deemed useful without buying all the epistemology or the metaphysical implications. The claim that cognitive agents understand the world by constructing mental representations of it can be a shared suggestion for changing science instruction. Many teachers are much more concerned in finding productive teaching methods than about philosophical questions as if knowledge must be considered an objective representation of the real world or not. We have to ponder if some ideas from the constructivist theory of instruction can help instructors to become better teachers. The pragmatic suggestions that come from the constructivist theory of instruction developed by von Glasersfeld, the leading proponent of radical constructivism, could be a good start in this␣search. (shrink)

We discuss the content and significance of John von Neumann’s quantum ergodic theorem (QET) of 1929, a strong result arising from the mere mathematical structure of quantum mechanics. The QET is a precise formulation of what we call normal typicality, i.e., the statement that, for typical large systems, every initial wave function ψ0 from an energy shell is “normal”: it evolves in such a way that |ψt ψt| is, for most t, macroscopically equivalent to the micro-canonical density matrix. The QET (...) has been mostly forgotten after it was criticized as a dynamically vacuous statement in several papers in the 1950s. However, we point out that this criticism does not apply to the actual QET, a correct statement of which does not appear in these papers, but to a different (indeed weaker) statement. Furthermore, we formulate a stronger statement of normal typicality, based on the observation that the bound on the deviations from the average specified by von Neumann is unnecessarily coarse and a much tighter (and more relevant) bound actually follows from his proof. (shrink)

We extend the topos-theoretic treatment given in previous papers of assigning values to quantities in quantum theory, and of related issues such as the Kochen-Specker theorem. This extension has two main parts: the use of von Neumann algebras as a base category (Section 2); and the relation of our generalized valuations to (i) the assignment to quantities of intervals of real numbers, and (ii) the idea of a subobject of the coarse-graining presheaf (Section 3).

Describing the methodology of a prominent mathematician can be an over-ambitious task, especially if the mathematician in question has made crucial contributions to almost the whole of mathematical science. John von Neumann’s case study falls within this category. Nonetheless, we can still provide a clear picture of von Neumann’s methodology of science. Recent literature has clarified its key feature—the opportunistic approach to axiomatics—and has laid out its main principles. To be honest, this work can hardly be superseded. What I would (...) like to do is to complete the picture by adding one more step and emphasizing a point so far neglected, namely the role of Hilbert’s ideal in von Neumann’s epistemology. Von .. (shrink)

Abstract Von Neumann (1932, Ch. 5) argued by means of a thought experiment involving measurements of spin observables that the quantum mechanical quantity is conceptually equivalent to thermodynamic entropy. We analyze Von Neumann's thought experiment and show that his argument fails. Over the past few years there has been a dispute in the literature regarding the Von Neumann entropy. It turns out that each contribution to this dispute (Shenker 1999, Henderson 2001, Hemmo 2003) addressed a different special case. In this (...) paper we generalize the discussion and examine the full matrix of possibilities that are relevant for the evaluation and understanding of Von Neumann’s argument. (shrink)

This is an essay about language, thought, and culture in general, and about Ancient Greek and Classical Chinese in particular. It is about the Sapir-Whorf hypothesis, which says that language influences the mind, and applies this hypothesis to Greek and Chinese. It is also an essay in comparative philosophy as well as a contribution to the history of ideas. From the language side, I rely on the nineteenth-century German linguist Wilhelm von Humboldt, and from the culture side on the contemporary (...) French sinologist François Jullien. Combining their ideas, I give substance to the Sapir-Whorf hypothesis and explain some of Jullien's claims about the historical and political developments of Chinese culture. The central .. (shrink)

We undertake the comparison between Ludwig von Bertalanffy's General Systems Theory and Alexandr Bodganov's Tektology as two theories proposing a holistic interpretation of reality and claiming to solve problems which are unsolvable via conventional philosophic and scientific theories and methodologies. Basic misunderstandings by some Soviet authors regarding the nature of these theories — especially in the case of Tektology — are pointed out. The comparison is made in what concerns the general origins and purposes of the theories, their approaches to (...) the problem of organization, their treatment of mathematics and their understanding of the cybernetic concept of regulation.We contend that Tektologycontains — some 15 years earlier — all the basic concepts which will be later developed by the General Theory of Systems. As we shall see, Tektology is the ultimate expansion of any theory of systems. This fact is widely ignored in contemporary specialized literature. (shrink)

In the BODY WORLDS exhibitions currently touring the United States, Gunther von Hagens displays human cadavers preserved through plastination. Whole bodies are playfully posed and exposed to educate the public. However, the educational aims are ambiguous, and some aspects of the exhibit violate human dignity. In particular, the signature cards attached to the whole-body plastinates that bear the title, the signature of Gunther von Hagens, and the date of creation mark the plastinates as artwork and von Hagens as the artist (...) in a gesture that strips the personal dignity from the donors. I conclude that the educational use of cadavers is compatible with respect for dignity if: 1) the utility of such use is great enough; 2) there are no other ways of achieving these ends; and 3) every effort is made to honor the dignity of the donors. (shrink)

In his last papers about deontic logic, von Wright sustained that there is no genuine logic of norms. We argue in this paper that this striking statement by the father of deontic logic should not be understood as a death sentence to the subject. Rather, it indicates a profound change in von Wright's understanding about the epistemic and ontological role of logic in the field of norms. Instead of a logical constructivism of deontic systems revealing a necessary structure of prescriptive (...) discourse, which marked his earlier efforts, he adopted the view that such systems should be seem as mere objects of comparison, i.e. as providing practical standards of rationality for normgiving activity. Within such view he proposed an interpretation of standard deontic logic in such a way to free deontic logicians from the philosophical difficulties related to the so-called Jørgensen's dilemma and deontic paradoxes. This effort, as we claim in the present paper, is an application of Wittgenstein's therapeutic method to dissolve philosophical difficulties caused by the use of logical tools to model relations between norms. (shrink)

In this essay Clarence Joldersma explores radical constructivism through the work of its most well-known advocate, Ernst von Glasersfeld, who combines a sophisticated philosophical discussion of knowledge and truth with educational practices. Joldersma uses Joseph Rouse's work in philosophy of science to criticize the antirealism inherent in radical constructivism, emphasizing that Rouse's Heideggerian critique differs from the standard realist defense of modernist epistemology. Next, Joldersma develops an alternative conception of truth, in terms of disclosure, based on Lambert Zuidervaart's work in (...) aesthetics. Joldersma concludes by arguing that this notion of truth avoids the pitfalls of both realism and antirealism, giving educational theorists a way forward to accept some of the major insights of constructivism with respect to learning and teaching without having to relinquish a robust notion of truth. (shrink)

Around 1989, a striking letter written in March 1956 from Kurt Gödel to John von Neumann came to light. It poses some problems about the complexity of algorithms; in particular, it asks a question that can be seen as the first formulation of the P=?NP question. This paper discusses some of the background to this letter, including von Neumann's own ideas on complexity theory. Von Neumann had already raised explicit questions about the complexity of Tarski's decision procedure for elementary algebra (...) and geometry in a letter of 1949 to J. C. C. McKinsey. The paper concludes with a discussion of why theoretical computer science did not emerge as a separate discipline until the 1960s. (shrink)

This article makes use of the thinking of both Max Scheler and Dietrich von Hildebrand in attempting properly to understand the nature of humility. The article examines how gratitude and truthfulness are both present, in an essentially integrated fashion, when a person exists in a humble state. Also addressed is the converse proposition, namely, that gratitude and truthfulness are absent in theperson who exists in a proud state and are replaced in that person by their respective opposites, ingratitude and mendacity. (...) The article begins with a discussion of Scheler’s view of humility as gratitude, then investigates von Hildebrand’s notion that humility is truth. In presenting their ideas, the article identifies three distinct ways in which von Hildebrand’s analysis of humility in terms of truthfulnesscomplements and expands upon Scheler’s analysis of humility in terms of gratitude. These three distinct yet complementary ways are, respectively, ontological, psychological, and ethical in nature. (shrink)

How does the Umwelt concept of Jakob von UexkuÈll ®t into current discussions within theoretical biology, philosophy of biology, biosemiotics, and Arti®cial Life, particularly the research on `autonomous systems' and robots? To investigate this question, the approach here is not historical UexkuÈll scholarship exposing the original core of philosophical ideas that provided an important background for the original conception of the Umwelt in the writings of Jakob von UexkuÈll (some of which seem incompatible with a modern evolutionist perspective); rather, I (...) will show that some aspects of his thoughts are still interesting and provide inspiration in contemporary biology, cognitive science, and other ®elds. Therefore, I will also draw upon his son Thure von UexkuÈll's re¯ections in his further development of the Umwelt theory, which is not anti-evolutionary (his father's approach was anti-Darwinian, which is not the same as anti-evolutionary though often interpreted as such). Speci®cally, I will investigate the plausibility of three theses: (1) The Umwelt theory of Jakob von UexkuÈll, even though his theoretical biology was often characterized as being thoroughly vitalist, can in the context of contemporary science, more adequately be interpreted as a branch of qualitative organicism in theoretical biology. Qualitative organicism is a position which claims, ®rst, a kind of middle road position, that is, on the one hand, there are no mysterious or non-material vital powers in organisms (non-vitalism), but on the other hand, the characteristic properties of living beings cannot be fully accounted for by physics and chemistry because these properties are nonreducible emergent properties (emergentism); second, that some of these emergent properties have an experiential, phenomenal, or subjective character which plays a major role in the dynamics of the living system. Modern biosemiotics (inspired by C. S. Peirce and Jakob von UexkuÈll, instituted by.. (shrink)

There is no doubt that Carl Menger and Ludwig von Mises can be considered as two of the most representative and influential members of the Austrian school of economics. However, given the fact that this school is well known for being a methodological school, it might be surprizing to note how far these two prominent economists apparently stand on methodological questions. While Menger frequently insisted that "no essential differences between the ethical and the natural sciences exists, but at most only (...) one of degree"1, Mises emphasizes the alleged gulf between social and natural sciences to the point of adopting what he called a "methodological dualism". As a consequence of this dualism, Mises did not hesitate when it comes to the analysis of human action to refer to laws "derived a priori" that "permit of no exception" because they belong to "an aprioristic and universally valid theory" 2. Such an uncompromising apriorism was so contrary to the empiricist mood of.. (shrink)

Unter the general heading of 'as-experiences' (to see X as Y) a distinction is drawn between epistemologically neutral (N-experiences) and epistemologically bound (B-experiences). N- and B-experiences move across the scale of O- and S-experiences; the distinction between 0- and S-experiences is a distinction in degree with regard to the subject's involvement in as-experiences. Constitutive and non-constitutive aspects are distinguished, and a conceptual connection is shown between constitutive aspects of an object and Rylean categories.

Many works intended to introduce interpretive issues in quantum mechanics present John von Neumann as having a view in which measurement produces a physical collapse in the system being measured. In this paper I argue that such a reading of von Neumann is inconsistent with what von Neumann actually says. I show that much of what he says makes no sense on the physical collapse reading, but falls into place if we assume he does not have such a view. I (...) show that the physical collapse view is based on an understanding of ‘state’ which von Neumann does not share. Introduction The standard reading of von Neumann The standard reading of von Neumann and Chapter VI The Chapter VI argument The Chapter V argument The Chapters III and IV argument Conclusion. (shrink)

In the work of Lorenz we find an initial phase of great concordance with Uexkülls theory of animals’ surrounding-world (Umweltlehre), followed by a progressive distance and by the occurrence of more and more critical statements. The moment of greater cohesion between Lorenz and Uexküll is represented by the work Der Kumpan, which is focused on the concept of companion, functional circles, social Umwelt. The great change in Lorenz’ evaluation of Uexküll is marked by the conference of 1948 Referat über Jakob (...) von Uexküll, where Lorenz highlights the vitalist position of Uexküll. In the works of the years after World War II, the influence of the Estonian Biologist greatly diminishes, even though Lorenz continues to express his admiration for particular studies and concepts of Uexküll. References to Uexküll’s work are less and far in between, while the difference is highlighted between the uexküllian theoretical frame (vitalistic) and Lorenz’s one (Darwinian and evolutionist). The two main critical lines of argument developed by Lorenz in this process are the biological and the epistemological one: on the biological side Lorenz heavily criticizes Uexküll’s vitalism and his faith in harmonizing forces and supernatural factors (which leads to concepts such as the perfect fusion of all biological species in their environment and the absence of rudimentary organs). On the epistemological side, Lorenz, arguing from the point of view of the critical realism, accuses Uexküll of postulating the separateness of all living beings, a separateness which is due to the Kantian idea that every subject of knowledge and action is imprisoned in the transcendental circle of its representations and attitudes. (shrink)

Problem: What is it that Ernst von Glasersfeld brought to mathematics education with radical constructivism? Method: Key ideas in the author’s early thinking are related to ideas that are central in constructivism, with the aim of showing their importance in math education. Results: The author’s initial thinking about constructivism began with Toulmin’s view of thinking as evolving. Ernst showed how Piaget’s genetic epistemology implied an epistemology that was not about ontology. Continuing with an analysis of the way radical and trivial (...) constructivism were received by the mathematics education community, implications of Ernst’s ideas are considered. Implications: These include the need to consider major changes in ways content is introduced to children, to consider carefully the language used to describe children’s emerging mathematical ideas, and to consider new conjectures and also how we think about the foundations of mathematics. Ultimately the value of RC is the way it reinspires belief in the possibility and importance of human growth. (shrink)

Much of the recent discussion of problematic aspects of quantum-mechanical measurement centers around that feature of quantum theory which is called "the projection postulate." This is roughly the claim that a change of a certain sort occurs in the state of a physical system when a measurement is made on the system. In this paper an argument for the projection postulate due to von Neumann is considered. Attention is focused on trying to provide an understanding of the notion of "the (...) state of a physical system" which is compatible with the argument von Neumann offers. An attempt is made to formulate the argument in terms of an objectivistic interpretation of probability concepts. It is seen that such an interpretation does not provide a suitable way of understanding the argument. An attempt is made to illustrate the source of this failure in terms of a non-quantum-mechanical example. (shrink)

‘Gnosticism and Modern Nihilism’ (published in Social Research , 1952) is indeed one of Hans Jonas’ most famous essays, to which its author reserved very deep attention during his philosophical career. As a former pupil of Martin Heidegger and Rudolf Bultmann, Jonas started to deal with religious topics, and specifically with Gnosticism, from the very outset of his philosophical career in the 1920s. After gaining recognition thanks to his remarkable philosophical-existential interpretation of Gnosticism, he returned to the modern age and (...) its philosophical characters. Principally, Jonas discovered that modern philosophy up to Heidegger and Sartre suffered from a peculiar spiritual disease – namely, nihilism – that he had already traced in ancient Gnosticism and that he intended to reject. Therefore, Jonas’ acquaintance with ancient religion and thinking gave him a deep insight into the modern age and provided him with a first glimpse of what was later to become his biological philosophy. However, whoever could imagine that the idea of tracing similarities between Gnosticism and modern thinking came to Jonas at the beginning of 1950 from the famous philosopher and biologist Ludwig von Bertalanffy? In this article, I shall endeavour to demonstrate this thesis by quoting from unpublished documents. However, I shall also try to prove that Jonas did not follow von Bertalanffy’s advice completely. The overall aim is, therefore, both to highlight the origins of an essential turning point in the thinking of Hans Jonas, and, on such a basis, to outline the innovation and originality of his philosophical contribution. (shrink)

In philosophischen wie nichtphilosophischen Darstellungen wird heutzutage der Ursprung des Leib-Seele-Problems überwiegend mit dem kartesischen Dualismus in Verbindung gebracht. Es wird die Meinung vertreten, daß erst durch Descartes’ Aufteilung des Menschen (und damit der Welt) in die beiden einander ausschließenden Substanzen der res extensa und der res cogitans das philosophische Grundübel in die Leib-Seele-Philosophie gekommen sei.1 Folgerichtig ist man fest davon überzeugt, daß sich das Problem nur lösen läßt, wenn man es an der Wurzel packt und konsequent Descartes’ ontologischen Dualismus (...) verwirft. Ein Herumdoktern an den Symptomen nach Art des Okkasionalismus oder der Leibnizschen Lehre von der prästabilierten Harmonie wird demgegenüber als metaphysisch suspekt und aussichtslos angesehen. Zwar ist inzwischen die Hoffnung, durch bloßen Anti-Cartesianismus ans Ziel zu kommen, etwas geschwunden, nachdem man feststellen mußte, daß die anfänglich so vielversprechende Kritik des Behaviourismus an Descartes nicht zum Ziel führte. Und auch mit der nächsten, von der Identitätstheorie hervorgerufenen großen Welle der Descartes-Kritik sind die Lösungen bis heute nicht so befriedigend ausgefallen, wie man sie gerne hätte. Die Überzeugung ist aber weiterhin stark, daß eine Lösung für das Leib-Seele-Problem zuallererst die Verwerfung des kartesischen Dualismus erfordert. (shrink)

Shenker has claimed that Von Neumann's argument for identifying the quantum mechanical entropy with the Von Neumann entropy, S() = – ktr( log ), is invalid. Her claim rests on a misunderstanding of the idea of a quantum mechanical pure state. I demonstrate this, and provide a further explanation of Von Neumann's argument.

This paper critically examines Heidegger’s 1959 dialogue, A Conversation from [von] Language – Between a Japanese and an Inquirer, across three distinct levels: as (1) a cross-cultural comparative exchange, (2) a meta-philosophical/ontological analysis of the fundamental relation between language and thought, and (3) a methodological inquiry into the phenomenology and hermeneutics of conversation. Despite the problematic nature of Heidegger’s explicit comparative engagement, I contend that his questioning of the possibility of “a conversation from house to house” provides a substantial clarification (...) of the meta-philosophical difficulties inherent in comparative and cross-cultural philosophy. At the same time, his thinking with respect to hermeneutics provides a methodological clue to the possibility of and the normative conditions for understanding across such cultural differences. (shrink)

In Explanation and Understanding von Wright argues that if, as he suggests, a practical inference schema is adopted as an explanation model for actions, then it follows that historical explanations are non?causal. My criticisms are principally directed against his version of the Logical Connection Argument which attempts to show that the verification of the action description to be explained and the verification of the intention description which explains it are interdependent. Von Wright blurs the important distinctions (1) between acting with (...) an intention and acting intentionally; (2) between intention to perform an action and intention to bring about a consequence of it; and (3) between verification of intention descriptions in general and of a description of a specific intention. The ?conclusion? of his practical inference schema cannot be the appropriate historical explanandum and the explaining procedure that he suggests is shown to be ultimately circular. (shrink)

Problem: While the elaboration and framing of constructivist epistemologies in keeping with the “currents of contemporary scientific epistemology” can be attributed to Jean Piaget, their development under the banner of radical constructivist epistemology is a result of the epistemological work of Ernst von Glasersfeld. The development of this epistemological paradigm, pursued over the last 40 years with the objective of “linking knowledge to action and situating the subject and the object on the same, multiple levels,” warrants further exploration and contextualization (...) within the framework of current scientific activity. Results: In what amounts to a historical coincidence, von Glasersfeld discovered the work of Piaget in 1973, the same year that the author of this article first began to read Piaget’s Epistemological Studies; this coincidence provides a starting point for describing the epistemological itinerary that led the author from a reading of Piaget in 1973 to a somewhat tardy reading of von Glasersfeld in 1988 (the same year of the translation of his “Introduction to Radical Constructivism” into French). He then explicates the subsequent developments of this paradigmatic conjunction over the last 30 years, interpreting them in the contexts of contemporary developments of scientific and operational interdisciplinarity as well as in terms of historical roots extending from Leonardo da Vinci to Paul Valéry. Implications: The paradigm of constructivist epistemologies (working from a phenomenologically-based gnoseological hypothesis) can be presented and supported with arguments that are at least as solid and legitimate as those invoked in favor of alternative paradigms of realist and post-positivist epistemologies (working from an ontologically-based gnoseological hypothesis). (shrink)

Purpose: The article pursues three aims. First, it intends to differentiate between two different approaches for knowledge studies, namely an empirical and a normative mode. In a second move, two different epistemologies in the work of Ernst von Glasersfeld will be introduced under the labels of “Epistemology I” and “Epistemology II.” Epistemology I relates to empirical research, Epistemology II is normative in nature. Third, the article makes the point that while Ernst von Glasersfeld’s Epistemology II has already been presented in (...) a finite and mature form, his empirical analysis of cognitive processes still provides a rich pool of tools and designs that should be further developed and advanced in the years and decades ahead. Method: The article is analytical in nature, identifying the different building blocks and relational networks of von Glasersfeld’s two epistemologies. By this, the article intends to contribute to a further advancement of von Glasersfeld’s Epistemology I. Results: The main finding lies in recognizing the radical and innovative elements of von Glasersfeld’s Epistemology I and on the still-challenging research designs of Epistemology I. (shrink)

Zusammenfassung Gemeinsamkeiten und Unterschiede in den Interpretationen von Ludwig und Popper werden aufgezeigt. Daß überhaupt Unterschiede festzustellen sind, erscheint zunächst verwunderlich, da zum einen von verschiedenen Autoren eine enge Korrelation zwischen Interpretationen der Quantenmechanik und Wahrscheinlichkeitsinterpretationen behauptet wird, zum anderen aber Ludwigs Chancengewichtungen als propensities im Sinne Poppers interpretiert werden können. Es zeigt sich, daß die Unterschiede in den Interpretationen der Quantenmechanik auf Unterschieden in dem jeweils verwendeten wahrscheinlichkeitstheoretischen Formalismus beruhen, die jedoch für die Möglichkeit, Chancengewichtungen als propensities zu interpretieren, (...) ohne Bedeutung sind. (shrink)

We present an axiomatic framework for nonstandard analysis-the Nonstandard Class Theory (NCT) which extends von Neumann-Gödel-Bernays Set Theory (NBG) by adding a unary predicate symbol St to the language of NBG (St(X) means that the class X is standard) and axioms-related to it- analogs of Nelson's idealization, standardization and transfer principles. Those principles are formulated as axioms, rather than axiom schemes, so that NCT is finitely axiomatizable. NCT can be considered as a theory of definable classes of Bounded Set Theory (...) by V. Kanovei and M. Reeken. In many aspects NCT resembles the Alternative Set Theory by P. Vopenka. For example there exist semisets (proper subclasses of sets) in NCT and it can be proved that a set has a standard finite cardinality iff it does not contain any proper subsemiset. Semisets can be considered as external classes in NCT. Thus the saturation principle can be formalized in NCT. (shrink)

En el presente artículo se analizan conceptos clave de la obra de Jakob von Uexküll, a partir de la confrontación con el darwinismo mecanicista de principios del siglo XX, al cual, Uexküll contrapone la idea de un mundo viviente de interrelaciones, conformado de acuerdo con un Plan u Orden subyacentes. Pero la cuestión no del todo resuelta para Uexküll, y que aquí será estudiada, es el papel que ha de atribuirse al azar y a la tendencia natural de traspasar los (...) límites. Cuestión que adquiere su mayor significación en el plano humano, siendo el hombre, como es, antiguo actor de la transgresión. The intention of this paper is to analyze the principal concepts in Jakob von Uexkiiltt's work, considering the confrontation with the darwinian mechanism of the beginnings of the XXth Century. In response to it, Uexkülll supports the idea of a living world of interrelations, which is conformed in accordance to a subjacent Plan or Order. But the question analyzed here, and which is not at all solved by Uexkülll, is the roll that should be attributed to chance, or the natural tendency to surpass the limits. A problem that acquires its deepest meaning in the human context, because man is, as we know, an old actor of transgression. (shrink)

This paper offers a modified version of the certainty equivalence (CE) theory of utility for uncertain prospects and a new set of axioms as its basis. It shows that the CE and the von Neumann-Morgenstern (NM) approaches to uncertainty are opposite in spirit: The CE approach represents a flight from the world of uncertainty to the rules of certainty while the NM approach represents a flight from the world of certainty to one of uncertainty. The two approaches differ even in (...) their treatment of compound prospects and their actuarially identical simple counterparts. (shrink)

Both von Neumann and Wiener were outsiders to biology. Both were inspired by biology and both proposed models and generalizations that proved inspirational for biologists. Around the same time in the 1940s von Neumann developed the notion of self reproducing automata and Wiener suggested an explication of teleology using the notion of negative feedback. These efforts were similar in spirit. Both von Neumann and Wiener used mathematical ideas to attack foundational issues in biology, and the concepts they articulated had lasting (...) effect. But there were significant differences as well. Von Neumann presented a how-possibly model, which sparked interest by mathematicians and computer scientists, while Wiener collaborated more directly with biologists, and his proposal influenced the philosophy of biology. The two cases illustrate different strategies by which mathematicians, the “professional outsiders” of science, can choose to guide their engagement with biological questions and with the biological community, and illustrate different kinds of generalizations that mathematization can contribute to biology. The different strategies employed by von Neumann and Wiener and the types of models they constructed may have affected the fate of von Neumann’s and Wiener’s ideas – as well as the reputation, in biology, of von Neumann and Wiener themselves. (shrink)

This article compares Alexander von Humboldt's and John Ruskin's writings on landscape art and natural landscape. In particular, Humboldt's conception of a habitat's essence as predominantly composed of vegetation as well as judgment of tropical American nature as the realm of nature of the highest aesthetic enjoyment is examined in the context of Ruskin's aesthetic theory. The magnitude of Humboldt's contribution to the natural sciences seems to have clouded our appreciation of his prominent status in the field of art history. (...) In addition to his position as scientist, Humboldt's role as aesthetician is demonstrated in this paper. Unlike Ruskin, who comfortably resides in the canon of art history relative to his minor significance in the field of geology, Humboldt has not been recognized for his impact on the world of art; his tremendous scientific importance seems to have overshadowed an appreciation of it. (shrink)

Zusammenfassung Es wird zu zeigen versucht, daß die Unterscheidung logischer und faktischer Wahrheiten nicht gelingen kann, solange nicht zwei Arten von Existenz unterschieden werden, nämlich logische Existenz als Widerspruchsfreiheit und faktische als an Ort und Zeit gebundene Existenz. Die Vernachlässigung der Bedingungen von Ort und Zeit führt dazu, daß z. B. Leibniz, Frege und Russell die faktische Wahrheit auf die logische zurückführen, was wiederum dadurch begünstigt wird, daß die genannten Autoren Individuum und Einermenge nicht konsequent unterscheiden.

Context: During the 1980s, Ernst von Glasersfeld’s reflections nourished various studies conducted by a community of mathematics education researchers at CIRADE, Quebec, Canada. Problem: What are his influence on and contributions to the center’s rich climate of development? We discuss the fecundity of von Glasersfeld’s ideas for the CIRADE researchers’ community, specifically in didactique des mathématiques. Furthermore, we take a prospective view and address some challenges that new, post-CIRADE mathematics education researchers are confronted with that are related to interpretations of (...) and reactions to constructivism by the surrounding community. Results: Von Glasersfeld’s contribution still continues today, with a new generation of researchers in mathematics education that have inherited views and ideas related to constructivism. For the post-CIRADE research community, the concepts and epistemology that von Glasersfeld put forward still need to be developed further, in particular concepts such as subjectivity, viability, the circular interpretative effect, representations, the nature of knowing, errors, and reality. Implications: Radical constructivism’s offspring resides within the concepts and epistemology put forth, and that continue to be put forth, through a large number of new and different generations of theories, thereby perpetuating von Glasersfeld’s legacy. (shrink)

An information completion of an extensive game is obtained by extending the information partition of every player from the set of her decision nodes to the set of all nodes. The extended partition satisfies Memory of Past Knowledge (MPK) if at any node a player remembers what she knew at earlier nodes. It is shown that MPK can be satisfied in a game if and only if the game is von Neumann (vN) and satisfies memory at decision nodes (the restriction (...) of MPK to a player's own decision nodes). A game is vN if any two decision nodes that belong to the same information set of a player have the same number of predecessors. By providing an axiom for MPK we also obtain a syntactic characterization of the said class of vN games. (shrink)

In this paper, I shall discuss the heuristic role of symmetry in the mathematical formulation of quantum mechanics. I shall first set out the scene in terms of Bas van Fraassen’s elegant presentation of how symmetry principles can be used as problem-solving devices (see van Fraassen [1989] and [1991]). I will then examine in what ways Hermann Weyl and John von Neumann have used symmetry principles in their work as a crucial problem-solving tool. Finally, I shall explore one consequence of (...) this situation to recent debates about structural realism (SR) and empiricism in physics (Worrall [1989], Ladyman [1998], and French [1999]). (shrink)

Alexander von Humboldt: Counternarrative of a dissenter? Content Type Journal Article DOI 10.1007/s11016-010-9514-0 Authors Andreas W. Daum, History Department, 570 Park Hall, State University of New York at Buffalo, Buffalo, NY 14260, USA Journal Metascience Online ISSN 1467-9981 Print ISSN 0815-0796.

Translation of "Von der Armut am Geiste; ein Dialog des jungen Lukács," by Ágnes Heller. This translation originally appeared in The Philosophical Forum, Spring-Summer 1972.

Context: The constructivist approach to the definition (or analysis) of the fundamental meanings of language in Ernst von Glasersfeld’s work. Problem: Has this approach achieved better results than other approaches? Method: Review of a book chapter by von Glasersfeld that is devoted to the analysis of the concepts of “unity,” “plurality” and “number.” Results: The constructivist approach to the semantics of the fundamental elements of language (some of which are fundamental for sciences too) seems to have produced positive results; moreover (...) these are in a field where other approaches have produced results that do not objectively seem satisfactory. (shrink)

This contribution analyzes the general relation between nature and laboratory with respect to the alternative of a ,,presented" and a ,,self-presenting nature". It is argued that as essentially presented by technological means, ,,nature in the laboratory" has to be considered as a dimensionally reduced nature already incorporated to the objective world of man. The basic precondition of the emergence of laboratory science on the threshold of modern times was the introduction of a concept of an ,,active physics" which itself presupposed (...) the abandonment of a given ,,metaphysical" order of phenomena, especially in the sense of the Aristotelian substance-accidence-scheme. The logic of a suchlike forced ,,presentation of nature", and also the logic of the modern technology-dependent ways of progress in knowledge can precisely be analyzed within the theoretical framework of the Paul-Lorenzen-School (,,Methodological constructivism"). The concept of a ,,self-presenting nature", on the other hand, requires a genuine reflection of a philosophy of nature which is able to focus on the aspects of self-reference and differentiality of the genuine instances of nature. Finally three starting-points of a non-laboratorial way of thinking nature are discussed. German Der Beitrag analysiert das Verhältnis von Natur und Labor unter dem Gesichtspunkt der Alternative von ,,sich zeigender und ,,gezeigter Natur, wobei die im Labor auf dem Wege einer wesentlich technisch-praktischen Erwirkung konkret ,,gezeigte Natur eine der Gegenstandswelt des Menschen immer schon integrierte (und insoweit dimensional verkürzte) Natur ist. Die entscheidende Voraussetzung für die Entstehung der Laborwissenschaft an der Schwelle zur Neuzeit war die Einführung eines Konzepts ,,handelnder Physik, das seinerseits die Preisgabe einer vorgängigen ,,metaphysischen Ordnung der Phänomene (insbesondere im Sinne des Substanz-Akzidens-Gefälles) voraussetzt. Die Logik dieses ,,Zeigens der Natur ebenso wie die des modernen, technologieabhängig gewordenen Erkenntnisfortschritts ist wissenschaftstheoretisch mit den Mitteln des Methodischen Konstruktivismus präzise beschreibbar. Für den alternativen Begriff einer ,,sich zeigenden Natur als wesentlich polydimensionaler, einheitsbegrifflich nicht einholbarer Totalität bedarf es jedoch einer genuin naturphilosophischen Reflexion, die insbesondere die mit dem Natürlichen verbundenen Komponenten der Selbstbezüglichkeit und der Differentialität zu thematisieren vermag. Abschließend werden drei Ansatzpunkte eines ,,nichtlaboratorischen Naturdenkens diskutiert. (shrink)

Ähnlich wie Adalbert Stifters Erzähler im Roman ,,Nachsommer” verband A. v. Humboldt auf seiner Amerikareise Erkundung und Erforschung, Reiselust und Erkenntnisstreben. Humboldt hat sein doppeltes Ziel klar benannt: Bekanntmachung der besuchten Länder, Sammeln von Tatsachen zur Erweiterung der physikalischen Geographie. Der Aufsatz ist in fünf Abschnitte gegliedert: Anliegen, Route, Methoden, Ergebnisse, Auswertung.

This paper focuses on Ludwig von Mises methodological apriorism. It uses Wittgenstein's private language argument as the basis for a critique of Mises's claim to have found apodictically certain foundations for economic analysis. It is argued instead that Mises's methodology is more fruitfully viewed as an exercise in social ontology, the objective of which is to outline key features of the socio-economic world that social scientific research ought to take into account if it is to be fruitful. The implications of (...) this perspective for three key methodological issues, namely the relationship between theory and history, the possibility of naturalism, and the place of Austrian economics within the discipline of economics as a whole, are brought out. (shrink)

Upshot: Richard Michod is professor and head of the Department of Ecology and Evolutionary Biology at the University of Arizona. He met Ernst von Glasersfeld at the University of Georgia and was a member of the Thursday evening epistemology seminar group. In his essay he recalls the discussions he had with Ernst on the nature of evolution and adaptation.

With an unpublished letter by W. von Humboldt about the possibility of establishing a uniform phonetic alphabet as a starting point, we investigate the ideological assumptions shared by such a project and by some attempts of Universal languages or Pasigraphies at the end of the eighteenth century. The almost unanimous dismissal of these attempts among philologists and linguists aiming at comparison seems to be responsible for their suspicion about phonetic studies, while the history of problems of transcription in Humboldt's writings (...) ends up with a condemnation of any transfer of foreign sounds on the ground of the uniqueness of the genuine articulated sound in every language. (shrink)

Applied mathematics often operates by way of shakily rationalizedexpedients that can neither be understood in a deductive-nomological nor in an anti-realist setting.Rather do these complexities, so a recent paper of Mark Wilson argues, indicate some element in ourmathematical descriptions that is alien to the physical world. In this vein the mathematical opportunistopenly seeks or engineers appropriate conditions for mathematics to get hold on a given problem.Honest mathematical optimists, instead, try to liberalize mathematical ontology so as to include all physicalsolutions. Following (...) John von Neumann, the present paper argues that the axiomatization of a scientifictheory can be performed in a rather opportunistic fashion, such that optimism and opportunism appear as twomodes of a single strategy whose relative weight is determined by the status of the field to beinvestigated. Wilson's promising approach may thus be reformulated so as to avoid precarious talk about a physicalworld that is void of mathematical structure. This also makes the appraisal of the axiomatic method inapplied matthematics less dependent upon foundationalist issues. (shrink)

The theologies of the saints of Hans Urs Von Balthasar and Karl Rahner are grounded in the theologians' distinct articulations of the relationship between nature and grace, Rahner's shaped by his response to the Nouvelle Théologie and Von Balthasar's influenced by his engagement with Henri De Lubac and Karl Barth. It is a generalization, but one useful for drawing contrasts, that for Rahner the saints are mediators of the Mediator and that for Von Balthasar they are revealers of the Revealer. (...) While the theologies can be reconciled, a richer understanding of the function of saints can emerge by maintaining the contrasts. The symbolic capacity of saints in Rahner's thought and the saints' exemplary abandonment to personal mission in Von Balthasar's thought are each an emphasis valuable in communicating saints' instructional and efficacious presence for others in the ecclesial Body. (shrink)

Problem: Ernst von Glasersfeld’s radical constructivism has been highly influential in the fields of mathematics and science education. However, its relevance is typically limited to analyses of classroom interactions and students’ reasoning. Methods: A project that aims to support improvements in the quality of mathematics instruction across four large urban districts is framed as a case with which to illustrate the far-reaching consequences of von Glasersfeld’s constructivism for mathematics and science educators. Results: Von Glasersfeld’s constructivism orients us to question the (...) standard view of policy implementation as a process of travel down through a system and to conceptualize it instead as the situated reorganization of practice at multiple levels of a system. In addition, von Glasersfeld’s constructivism orients us to understand rather than merely evaluate policies by viewing the actions of the targets of policies as reasonable from their point of view. Implications: The potential contributions of von Glasersfeld’s constructivism to mathematics and science education have been significantly underestimated by restricting the focus to classroom actions and interactions. The illustrative case of research on the application of these ideas also indicates the relevance of constructivism to researchers in educational policy and educational leadership. (shrink)

Zusammenfassung P. Lorenzen hat unlängst eine neue Definition von „Wahrscheinlichkeit vorgeschlagen. Es soll gezeigt werden, daß sich zumindest die in diesem Zusammenhang erhobenen Ansprüche auf „Rechtfertigung der Normierung und der endlichen Additivität von Wahrscheinlichkeitsmaßen sowie auf „Begründung der Anwendbarkeit in den empirischen Wissenschaften nicht aufrecht erhalten lassen.

Zusammenfassung Es wird ausgegangen von den in den empirischen Wissenschaften vorkommenden Satzarten. Die Abhängigkeit der Kennzeichnungen „vollständig bzw. „hinreichend verifiziert (bzw. „falsifiziert ) von den Kriterien der benützten Überprüfungsverfahren wird untersucht. Die irrigen Voraussetzungen extremer Verallgemeinerungen, wie der „Verifikationsthese Wittgensteins und der „asymmetrischen Falsifikationstheorie Poppers, werden aufgezeigt. Die methodologische Symmetrie von Verifikation und Falsifikation wird durch den Hinweis auf die gleicherweise unerläßliche Bedeutung der induktiven Schritte (wie extrapolierende Induktion, semantische Deutung und Umdeutung formaler Ausdrücke) und des kontrollierenden Aufsuchens von Unverträglichkeiten (...) für den wissenschaftlichen Fortschritt begründet. Unter Berücksichtigung dieser Kriterien werden empirische Allsätze („Naturgesetze ) als die Beschreibung der realen Ordnung empirischer Phänomene gedeutet. (shrink)

On February 5, 1850, the Austrian emperor Franz Josef appointed C.G. Jacob Jacobi to the position of full professor at the University of Vienna. Thanks to the efforts of Alexander von Humboldt, however, the world-famous Prussian mathematician remained in Berlin and continued in his position as a salaried member of the Academy of Sciences.This paper describes the history of Jacobi’s appointment in Vienna and his ultimate rejection of it.

Context: On 12 November 2010, Ernst von Glasersfeld passed away. He was one of the most important, if not the most important, proponents of constructivist philosophy. Problem: In his life Ernst influenced many other scientists and philosophers. By whom was he himself influenced; who shaped his intellectual development? By collecting contributions from those who knew him closely or have an excellent understanding of radical constructvism we aim at presenting a cartography of the past and current state of affairs of radical (...) constructivism. These contributions should also shed light on the question of the legacy that Ernst leaves behind. Method: Some 25 authors accepted our invitation to contribute to this commemorative issue. Some texts are reminiscence essays expressing their friendship with Ernst, others are academic papers that investigate Ernst’s influence in various disciplines. Two contributions Ernst von Glasersfeld authored himself. Results: Ernst von Glasersfeld is described as an intellectual mentor for many of his students. His legacy is alive in many disciplines ranging from education science to linguistics. Implications: Ernst’s impact on mathematics education is described in some detail in these articles. However, his impact on science education has also been extensive. Constructivism is a foundation stone in the thinking behind the curriculum in many countries and this collection of papers should be useful to practitioners and researchers in education. We think that the work on conceptual analysis could be used more fully as a tool for modelling emerging concepts and hope that the articles here will facilitate interest in this aspect of Ernst’s work. (shrink)

Upshot: Michael Tomasello is Director of the Department of Developmental and Comparative Psychology and Co-Director of the Max Planck Institute for Evolutionary Anthropology in Leipzig. He completed his PhD with Ernst as his supervisor in 1980. In his reminiscence essay he describes the “total enculturation” he experienced on encountering Ernst von Glasersfeld.

Zusammenfassung In einer Kritik der Hempelschen Erklärungstheorie hat W. Stegmüller gezeigt, daß zur Erklärung nur die „wirklichen Realgründe , also die Ursachen eines Ereignisses herangegezogen werden können, und W. C. Salmon hat darauf aufmerksam gemacht, daß in Erklärungen nur (statistisch) relevante Faktoren angeführt werden dürfen. Für die Theorie der wissenschaftlichen Erklärung ist daher heute die probabilistische Kausalitätstheorie von P. Suppes besonders interessant; denn Suppes versucht, den Begriff der Ursache statistisch zu fassen und auf den Begriff der (positiven) statistischen Relevanz zurückzuführen. (...) In diesem Aufsatz werden deshalb die Grundzüge der Kausalitätstheorie von Suppes dargestellt und diskutiert. Dabei ergibt sich zunächst, daß Suppes' eigene Formulierung dieser Theorie nicht adäquat ist, da in ihr die Carnapsche Forderung des Gesamtdatums nicht hinreichend berücksichtigt wird. Diese Schwierigkeit kann jedoch überwunden werden, wenn man den Begriff der „kausalen Abschirmung bzw. der „nur scheinbaren Ursache — in engerer Anlehnung an die Überlegungen Salmons — etwas anders definiert als Suppes und wenn man darüberhinaus bei der Beurteilung der statistischen Relevanz einzelner Faktoren jeweils die Menge aller für ein gegebenes Ereignis statistisch relevanten Ereignisse berücksichtigt. Zum Abschluß wird kurz die Frage aufgeworfen, inwieweit es überhaupt sinnvoll sein kann, den Begriff der Kausalität statistisch zu definieren. Es wird argumentiert, daß sich diese Frage nicht definitiv beantworten läßt, da in diesem Zusammenhang Konventionen eine entscheidende Rolle spielen, daß es jedoch einige — wenn auch eher intuitive — Argumente gegen statistische Kausalitätstheorien gibt, die es wahrscheinlich machen, daß z.B. die Überlegungen J. L. Mackies zum Begriff der Kausalität unserem alltagssprachlichen Begriff der Verursachung sehr viel mehr gerecht werden als die Überlegungen von Suppes. (shrink)

This collection of essays presents a systematic and up-to-date survey of the main aspects of Georg Henrik von Wright's philosophy, tracing the general ...

Dietmar von der Pfordten, Normative Ethik Content Type Journal Article Pages 1-2 DOI 10.1007/s10677-012-9364-5 Authors Matthias Hoesch, WWU Münster, Philosophisches Seminar, Domplatz 23, 48143 Münster, Germany Journal Ethical Theory and Moral Practice Online ISSN 1572-8447 Print ISSN 1386-2820.

This paper explores the question whether war was regarded as eugenic or dysgenic before, during and after the First World War. The main focus is on the positions of the German military officer and historian Friedrich von Bernhardi, who in Germany and the Next War , first published in 1912, argued for war as eugenic, and Vernon Kellogg’s Headquarters Nights, published in 1917, which marks an important work characterizing war as dysgenic. I argue that an international community of biologists (...) and social scientists who debated the hereditary effect of war existed before World War I and trace how the concepts of altruism and group selection contributed to a eugenic or dysgenic interpretation of war. (shrink)

Zusammenfassung Läßt sich Wissenschaftstheorie mittels Wissenschaftsgeschichte überprüfen? Die Vorschläge und Ansätze Wolfgang Detels hierzu* werden einer kritischen Prüfung unterzogen. Es wird gezeigt, daß seine Darstellungen der normenlogischen Struktur solcher Überprüfungsversuche ihren Gegenstand nicht treffen: sie geben die angesprochenen Ansätze, etwa von Kuhn oder Lakatos, nicht mehr wieder.

Seit kurzem wird des öfteren in Deutschland die Ansicht geäußert, Deutschland solle nun seine fremdenfeindliche Vergangenheit im Zweiten Weltkrieg endlich hinter sich lassen und von nun ab als >>normalisiertes<< Land der Zukunft gegenübertreten. Diese Meinung entsteht aus der Voraussetzung, daß Deutschland durch seine Geschichte von Xenophobie und Genozid im Zweiten Weltkrieg als abnormal, als ungewöhnlich gekennzeichnet ist. Aber das ist nicht wahr. Deutschlands blutige Geschichte ist mit derjenigen der Vereinigten Staaten, Großbritanniens, der Niederlande, Rußlands, Chinas, Japans, der Türkei, Vietnams, Kambodschas, (...) Somalias, Ruandas, des Irak, des Kosovo, Bosniens, und anderer Länder vergleichbar. Zu vergleichen bedeutet weder zu relativieren, noch zu entschuldigen, sondern bloß anzuerkennen, daß die Verbrechen gegen die Menschlichkeit, die in verschiedenen Ländern stattfinden, einige gemeinsame Eigenschaften haben. (shrink)

Seit kurzem wird des öfteren in Deutschland die Ansicht geäußert, Deutschland solle nun seine fremdenfeindliche Vergangenheit im Zweiten Weltkrieg endlich hinter sich lassen und von nun ab als >>normalisiertes<< Land der Zukunft gegenübertreten. Diese Meinung entsteht aus der Voraussetzung, daß Deutschland durch seine Geschichte von Xenophobie und Genozid im Zweiten Weltkrieg als abnormal, als ungewöhnlich gekennzeichnet ist. Aber das ist nicht wahr. Deutschlands blutige Geschichte ist mit derjenigen der Vereinigten Staaten, Großbritanniens, der Niederlande, Rußlands, Chinas, Japans, der Türkei, Vietnams, Kambodschas, (...) Somalias, Ruandas, des Irak, des Kosovo, Bosniens, und anderer Länder vergleichbar. Zu vergleichen bedeutet weder zu relativieren, noch zu entschuldigen, sondern bloß anzuerkennen, daß die Verbrechen gegen die Menschlichkeit, die in verschiedenen Ländern stattfinden, einige gemeinsame Eigenschaften haben. (shrink)

We announce some new results regarding the classification problem for separable von Neumann algebras. Our results are obtained by applying the notion of Borel reducibility and Hjorth's theory of turbulence to the isomorphism relation for separable von Neumann algebras.

Zusammenfassung Es wird begründet, daß die Konstruktion des Kartenparadoxons von Kerridge auf einer fehlerhaften Betrachtungsweise beruht. Eine genauere Analyse zeigt, daß das Kerridge-Argument mit dem Hackingschen Likelihood-Stützungsargument im Einklang steht.

Purpose: My goals in this paper are to comment on some of the roles that Ernst von Glasersfeld played in our work in IRON (Interdisciplinary Research on Number) from circa 1975 up until the time of his death, and to relate certain events that revealed his character in very human terms. Method: Among my recollections of Ernst, I have chosen those that I felt would most adequately portray his impact on the field of mathematics education and his ethics in the (...) field of human affairs. Findings: It has not often been said but, in his work in IRON, it was Ernst’s explicit intention to start a conceptual revolution in mathematics education and beyond. Other than serving as a revolutionary, Ernst also served as a mentor for many investigators in mathematics education, including myself. He excelled as a scientist as well an epistemologist, and his scientific work fueled his epistemological work. Ernst was a very ethical and wonderful human being who was dedicated to the betterment of humankind by means of his revolutionary ideas. (shrink)

Context: In this empirical and conceptual paper on the historical, philosophical, and epistemological backgrounds of second-order cybernetics, the emergence of a significant pedagogical component to Heinz von Foerster’s work during the last years of the Biological Computer Laboratory is placed against the backdrop of social and intellectual movements on the American landscape. Problem: Previous discussion in this regard has focused largely on the student radicalism of the later 1960s. A wider-angled view of the American intellectual counterculture is needed. However, this (...) historical nexus is complicated and more often dismissed than brought into clear focus. Method: This essay assembles a historical sequence of archival materials for critical analysis, linked to a conceptual argument eliciting from those materials the second-order cybernetic concepts of observation, recursion, and paradox. Results: In this period, von Foerster found the “positive of the negative” in the social and intellectual unrest of that moment and cultivated those insights for the broader constitution of a new cognitive orientation. Implications: As a successful student of his own continuing course on heuristics, von Foerster left the academic mainstream to ally his constructivist epistemology with the systems counterculture. (shrink)

Early zoological researches by P.S. Pallas and K.E. von Baer in their letters to the zoologists of Berlin. The centenaries which are celebrated in 1991 and 1992 in memory of P.S. Pallas (1791) and K.E. von Baer (born 1792) caused the following studies of hitherto unpublished sources, preserved in the collections of the Museum für naturkunde in Berlin. The earliest zoological works of Pallas are discussed in relation to his last publication on the Zoographia Rosso-Asiatica which should have been finished (...) in Berlin. Some years after the death of Pallas, Baer also contacted the Berlin zoologists K.A. Rudolphi and M.H. Lichtenstein, asking for help, when he was going to establish zoology and a zoological museum at the University of Königsberg. (shrink)

A dix ans d’intervalle deux déontciens de premier plan, G.H. von Wright et H.N. Castañeda, ont abordé -indépendamment l’un de l’autre- le probleme du fondement des normes et des énoncés normatifs. Leurs solutions respectives méritent d’être attentivement examinées. Ne prêtent-elles pas a discussion? Pour qu’une norme juridique soit fondée, suffit-il qu’elle soit édictée par un législateur compétent conformément a la procédure législative en vigueur? Un énoncé nornlatif est-il fondé du moment que l’ordre en faisant partie est légitimé au sens conféré (...) a ce terme par l’auteur de Thinking and doing? Et tout d’abord peut-on admettre que les ordres fassent partie des énoncés nomlatifs? L’article qui suit essaie de répondre à ces questions et aux questions connexes. (shrink)

Einer der interessantesten der vielfältigen Versuche, die Ethik auf ein festes Fundament zu stellen, ist die Konzeption intrinsischer Werte, die Vorstellung, daß eine objektive Begründung der Ethik vermöge einer intuitiven Erkenntnis des inneren Werts der Dinge möglich sei. Doch diese Vorstellung, die in neuerer Zeit vor allem von Franz Brentano und G.E. Moore vertreten wurde und die heute in Roderick Chisholm ihren prominentesten Anhänger hat, ist nicht zielführend. Dies zu demonstrieren, ist das Ziel des vorliegenden Aufsatzes. Zu diesem Zweck wird (...) zunächst die Konzeption intrinsischer Werte anhand der Lehren Brentanos und Moores in aller Kürze skizziert. Daran anschließend wird erstens versucht, die Sinnhaftigkeit des Konzepts intrinsischer Werte überhaupt in Frage zu stellen. Darüber hinaus aber wird weiters gezeigt, daß selbst dann, wenn man intrinsische Werte entsprechend der von Brentano und Moore vertretenen Auffassung als gegeben annimmt, diese Annahme keine ausreichende Grundlage für eine befriedigende ethische Theorie bereitstellt. (shrink)

Seven unknown letters from 1823 to 1831 are published. The famous discoverer of the mammal's egg and founder of the modern embryology Karl Ernst von Baer (1792–1876), born as a German in Estonia and then anatomist and zoologist at Königsberg University, wrote them to his publisher Ludwig F. Froriep in Weimar and his son and successor. Robert F. Baer offered his co-work with a dictionary of natural history (which he criticized), he proposed a map of all research voyages everywhere in (...) the world, and he sent a few small papers about local birds. To Robert F. Baer gave some recommendations concerning his career; he asked for details of a death elephant, and he told that they were awaiting the cholera. (shrink)

Context: The late Ernst von Glasersfeld humbly claimed that he was not a therapist and therefore had no comment on the relevance of his radical constructivism for psychotherapy. Problem: Because the constructivist view of psychotherapeutic change is often overlooked, this paper in von Glasersfeld’s memory uses his constructivist theory to conceptualize how such change occurs. Method: By briefly outlining the radical constructivist position and examining its theoretical implications for psychotherapy, the significance of von Glasersfeld’s theorizing for understanding therapeutic change is (...) articulated. Results: A constructivist view of psychotherapeutic change emphasizes relational factors rather than the rote steps of an empirically supported treatment approach. While client-therapist interactions never instruct clients how to change, the therapeutic relationship is the mechanism by which client systems are disrupted and compelled to reorganize in new ways. Implications: Von Glasersfeld’s constructivism implies that therapy is a structured way of generating client change. Because all clients are closed systems, therapy is different with every client. Von Glasersfeld’s theory provides a basis for conceptualizing therapy in relational, rather than empirically supported treatment, terms. (shrink)

The evolution of John von Neumann's scientific interests and a study of his writings show that von Neumann increasingly supported an empirical, computational method. This is in stark contrast with the extant view of von Neumann as a pure theorist.

Johann Wolfgang von Goethe's texts on the philosophy of science Der Versuch als Vermittler von Objekt und Subjekt (The Experiment as Mediator Between Object and Subject, 1793) and Meteore des literarischen Himmels (Meteors of the Literary Sky, 1820) both discuss the fundamental epistemological question how knowledge emerges: They ask how scientists can gain universally valid knowledge by observing natural phenomena and to what extent the individual researcher is affected by the scientific community. In this paper, Goethe's writings are presented as (...) alternatives to the contemporary discussions on scientific plagiarism. Goethe shows that the linking of knowledge to an individual subject is less an effect of scientific practice than the result of a specific practice of attribution. Plagiarism thus appears as a logical consequence of the principle of priority in modern scientific culture. German In Johann Wolfgang von Goethes wissenschaftstheoretischen Texten Der Versuch als Vermittler von Objekt und Subjekt (1793) und Meteore des literarischen Himmels (1820) geht es um die grundlegende epistemologische Frage, wie Wissen entsteht: Sie fragen danach, wie Wissenschaftler aus den Beobachtungen der Naturphänomene allgemeingültige Erkenntnisse gewinnen können und inwieweit der einzelne Forscher von der wissenschaftlichen Gemeinschaft beeinflusst wird. Goethes Schriften werden hier als Alternativen zu den aktuellen Diskussionen um wissenschaftliche Plagiate - mit ihrer Neigung zur Personalisierung und zum Skandal - vorgestellt. Goethe zeigt, dass die enge Kopplung von Wissen an ein einziges Subjekt weniger der wissenschaftlichen Praxis entspricht, als vielmehr das Ergebnis einer spezifischen Zuschreibungspraxis ist. Das kritikwürdige Plagiat erscheint somit auch als eine logische Konsequenz des Prioritätsgebots der modernen Wissenschaftskultur. (shrink)

Man ist sie fast schon leid, die Rede vom „Chaos“, mit der wissenschaftspublizistisch versierte Forscher bemüht sind, sich ihren Anteil am hart umkämpften Markt der Forschungsmittel und -reputation zu sichern. Die inflationäre Verkündigung von „wissenschaftlichen Revolutionen“, „Paradigmenwechseln“ und „postmoderner Wissenschaft“ mag manchem Philosophen zwar insgeheim noch schmeicheln wegen der Gebrauchs- und Marktfähigkeit - und Autorität - philosophischer Termini. So recht zu glauben sind solche Botschaften jedoch selten. Aber welcher Philosoph wollte sich da ein sachgerechtes und kritisches Urteil erlauben, ob die (...) Inanspruchnahme philosophischer Begriffe an diversen aktuellen Forschungsfronten überhaupt angemesen ist? Wer könnte es andererseits besser, als jemand, der wie Theodor Leiber sowohl in Physik als auch in Philosophie promoviert ist und dessen überarbeitete Philosophiedisseration hier zur Diskussion steht? (shrink)

Whereas liberals tend to emphasize harm as the decisive criterion for legitimizing criminalisation, moralists take a qualified notion of wrongfulness as sufficient even when no harm is at hand. This comment takes up Andreas von Hirsch’s “dual element approach” requiring both harm and wrongfulness as necessary conditions for criminalisation and argues that Joel Feinberg’s account of harming as violation of moral rights is perfectly compatible with it. Subsequently, two issues from the liberalism-moralism debate on criminalisation are examined: The difficulty of (...) how to determine wrongfulness beyond the scope of harming, and the so far disregarded question of whether the democratic legislator is free within the framework of constitution to criminalise whatever conduct he wants to prevent irrespective of philosophical constraints. (shrink)

Upshot: Paul Silverman is Professor in the Psychology Department of the University of Montana. He completed his doctorate at the University of Georgia in 1977 with Ernst von Glasersfeld as mentor. His essay focuses on his personal encounters with him during that period.

In this paper I take up the question of the possible influence of J. G. Fichte on Wilhelm von Humboldt’s theory of language. I first argue that the historicalrecord is unclear, but show that there is a deep philosophical difference between the two views and, as a result of this difference, we should conclude thatthe influence was small. Drawing on a distinction made by Michael Dummett, I show that Fichte understands language as encoding thought while Humboldtunderstands language as a medium (...) of thought. The consequences of this difference affect a wide range of issues from their views on the nature of personal pronouns, to their theories of communicative understanding, to their theories of the proper nature of inquiry into language. (shrink)

A multitude of techno-natures emerge through discourses and practices of the new technosciences. While some philosophers and science studies scholars argue that model organisms and artefacts are getting more and more disembodied and decontextualised in the laboratory, I want to show how ontic dimensions of model organisms and artefacts are made invisible as well as visible in different practices of technosciences like Artificial Life and robotics.This analysis opens up possibilities for an understanding of how ontic dimensions of non-human actors are (...) made visible and invisible in technoscientific practices. At the same time it allows the development of a concept of nonhuman actors beyond reifying, velontriquist practices of representation as well as a critical intervention in the co-construction of our technoculture. German Mannigfaltige Techno-Naturen an der Schnittstelle von Sozialem, Technischem und Natürlichem entstehen in den und durch die Diskurse und Praktiken der neuen Technowissenschaften. Entgegen der verbreiteten These von der Entkörperung und Dekontextualisierung von Modellorganismen im Labor zeige ich in meinem Beitrag auf, wie auf je unterschiedliche Weise ontische Dimensionen von Modellorganismen und Technofakten in der Artificial Life-Forschung und Robotik sichtbar bzw. unsichtbar gemacht werden.Gerade die Untersuchung der Konstruktion der ontischen Dimension nichtmenschlicher Akteure in unterschiedlichen Forschungspraktiken eröffnet Möglichkeiten, nichtmenschliche Akteure ernst zu nehmen, erlaubt ein genaueres Verständnis des Un/Sichtbarmachens von spezifischen ontischen Dimensionen nichtmenschlicher Akteure und zeigt Wege für kritische Interventionen in unsere Technowissenschaftskultur auf. Sie vermeidet jene bauchrednerischen Erzählpraktiken, die mit der Stimme aus dem Off den nichtmenschlichen Akteuren Eigenschaften verordnen und sie damit einmal mehr zum Verstummen bringen. (shrink)

In den sozialwissenschaftlichen und sozialtheoretischen Diskussionen ruckt nach einer langeren Interimszeit wieder zunehmend die Frage nach den Konstitutionsbedingungen des Sozialen, von Sozialitat bzw. sozialen Gebilden in den Vordergrund.