Limits of the Conversation about Forms. Types of Knowledge and Necessity of Forms in Plato's "Parmenides". - Forms (ideas) are among the things that Plato is serious about. But about these things he says in his "Seventh Letter": "There neither is nor ever will be a treatise of mine on the subject." (341c, transl. J. Harward). Plato's statement suggests the question, why one does not and never can do justice to the Platonic forms by means of a written text about (...) the forms. Another big question of Plato research is whether the conversations documented in the Platonic dialogues are also affected by this verdict. This paper aims to provide, as far as possible, newly substantiated answers to these two questions. To this end, the systematic limits of the discussion about forms, which are particularly evident in Plato's dialogue "Parmenides", are examined in eight steps: First, two types of knowledge are presented that play an important systematic role in Plato's philosophy with regard to the limits of conversation: knowledge-how (practical knowledge) and knowledge-that (propositional knowledge) (I). Then the Socratic model of these two types of knowledge is interpreted, which is drafted in the tenth book of the "Republic". This model uses the example of bridle, bridlemaker and rider to explain the primacy of practical knowledge and the limits of propositional knowledge (II). Subsequently, it will be shown how the dialogues "Republic" and "Parmenides" are connected with each other in content and form (III). The gradation of the two types of knowledge, which is indicated by the motifs of the bridle and the horse on the image level of the "Parmenides", proves to be the structure that systematically underlies the structure of the entire dialogue (IV). It also makes clear why the conversation about the forms in the first part of the "Parmenides" has to fail (V). The assumption that the two parts of the "Parmenides" express two different types of knowledge in dealing with forms is supported by the results of a logical analysis of the last defence of the acceptance of forms (135b-c). This analysis shows why, for reasons of principle, it is impossible to speak adequately about forms (VI). Forms have the function of being presuppositions of 'talking about something'. Thus forms are always presupposed in conversation when one talks about them, and thus elude appropriate discussion in conversation (VII). That this is not only a methodical insight of the Platonic Parmenides, but can also be attributed to Plato himself, is demonstrated by the concluding reinterpretation of the central sentence of the critique of writing in Plato's "Seventh Letter". It will become apparent that, contrary to the now widespread view of the representatives of the Tübingen school, philosophical and also good philological reasons speak for the fact that Plato related his criticism only to the communicability of forms through treatises, i.e. tract-like writings (VIII). (shrink)

Husserl’s theory of fulfilment conceives of empty acts, such as symbolic thought, and fulfilling acts, such as sensory perceptions, in a strict parallel. This parallelism is the basis for Husserl’s semantics, epistemology, and conception of truth. It also entails that any true proposition can be known in principle, which Church and Fitch have shown to explode into the claim that every proposition is _actually_ known. I assess this logical challenge and discuss a recent response by James Kinkaid. While Kinkaid’s proposal (...) saves one direction of the parallel for semantics, it gives up the parallelism for truth. I spell out a different response which meshes naturally with Husserl’s account of meaning. If the parallelism is restricted to a class of basic propositions, the truth of non-basic propositions can be defined inductively, without leading to the paradox. I then discuss objections that have been raised against a similar proposal by Dummett. The result is that exegetically plausible and popular interpretations of Husserl’s correlationism are indeed challenged by Church and Fitch. But when taking into account the ‘logical adumbration’ of propositional blindspots, truth and possible fulfilment can be connected without paradox. (shrink)

In his Paradoxes (1995: Cambridge University Press: 149) Mark Sainsbury presents the following pair of sentences: Line 1: The sentence written on Line 1 is nonsense. Line 2: The sentence written on Line 1 is nonsense. Sainsbury (1995: 149, 154) here makes three assertions: (1) The sentence in Line 1 is so viciously self-referential that it falls into the truth-value gap. The sentence is really nonsense. (2) The sentence in Line 2 is by contrast true. For it states precisely that (...) the sentence in Line 1 is nonsense. (3) The two sentences in Lines 1 and 2 are an example of the principle that two sentence tokens of the same sentence-type can have different truth-values, although they have the same reference and state the same property of the object of reference. In this paper, I argue that Sainsbury’s assumptions are false in all three cases. (shrink)

The dignity of human embryos. On the moral relevance of potentiality and numerical identity. -.

This commentary challenges Railton’s claim that the affective system is the key source of control of action. Whilst the affective system is important for understanding how acting for a reason is possible, we argue that there are many levels of control of action and adaptive behaviour and that the affective system is only one source of control. Such a model seems to be more in line with the emerging picture from affective and movement neuroscience.

In future φ. On a subjectivist thought experiment in the embryo debate. -.

Mit seinem Einfluß auf die Entwicklung der Physiologie, Physik und Geometrie ist Hermann von Helmholtz wie kaum ein anderer Wissenschaftler der zweiten Hälfte des 19. Jahrhunderts repräsentativ für die Naturforschung in Deutschland. Nicht weniger repräsentativ nimmt sich die Entwicklung seiner Wissenschaftsauffassung aus. Während er bis in die späten 60er Jahre einen emphatischen Wahrheitsanspruch der Wissenschaft vertrat, begann er in der nachfolgenden Zeit, die Geltungsbedingungen der wissenschaftlichen Erkenntnis einer Relativierung zu unterwerfen, die zusammenfassend als Hypothetisierung bezeichnet werden kann. Helmholtz entwickelte damit (...) schon im vergangenen Jahrhundert Ansätze einer Wissenschaftsauffassung , die in erstaunlichem Umfang in die Richtung der Moderne weisen. Wie nah er späteren Wissenschaftsauffassungen bereits gekommen ist, kann ein Vergleich mit Karl R. Poppers Forschungslogik illustrieren. In seiner Forschungslogik ist die Hypothetisierung der wissenschaftlichen Erkenntnis entschieden weiter vorangeschritten als in Heimholtz' Wissenschaftstheorie. Was sich bei Helmholtz erst vage abzuzeichnen beginnt, ist bei ihm bereits explizit formuliertes Programm geworden. Obwohl HeImholtz und Popper in keiner direkten wissenschaftstheoretischen Entwicklungslinie stehen und Popper sich in seinen Schriften auch nur sehr selten und beiläufig auf Helmholtz bezieht, finden sich dennoch überraschende und bisher nicht beachtete Berührungspunkte, die insbesondere dann hervortreten, wenn man Heimholtz' Wissenschaftsauffassung vor dem Hintergrund von Poppers Forschungslogik betrachtet. (shrink)

Gregor Schiemann verteidigt die Aktualität des aristotelischen und cartesianischen Naturbegriffes, die Natur in Gegensatz zu Nichtnatürlichem definieren. Als gültig könnnen sich diese traditionellen Naturbegriffe jedoch nur noch innerhalb begrenzter Kontexte erweisen. -/- Im ersten Teil seines Buches zeigt der Autor, dass Aristoteles' Bestimmung der Natur als Gegenbegriff zur Technik in der Lebenswelt sowie Descartes' Dualismus von Natur und Geist für das eigene Bewusstseinserleben orientierungsleitend geblieben sind. Dass die Begriffspaare nicht nur in gesonderten Kontexten vorkommen, sondern sich ihre Anwendungen auch (...) wechselseitig durchdringen, führt er im zweiten Teil am Beispiel von Aristoteles' Seelenlehre und Descartes' Mechanismus aus. Die naturphilosophische und erkenntnistheoretische Untersuchung verbindet Elemente der analytischen Philosophie mit Ansätzen der Phänomenologie. Sie will zu einem pluralen Verständnis der Natur beitragen, das universelle Geltungsansprüche verabschiedet. (shrink)

In his pioneering sociological theory, which makes phenomenological concepts fruitful for the social sciences, Alfred Schütz has laid foundations for a characterization of an manifold of distinct domains of experience. My aim here is to further develop this pluralist theory of experience by buttressing and extending the elements of diversity that it includes, and by eliminating or minimizing lingering imbalances among the domains of experience. After a critical discussion of the criterion-catalogue Schütz develops for the purpose of characterizing different cognitive (...) styles, I move on to examine its application to one special style, the lifeworld. I appeal, on the one hand, to Husserl's characterization of the lifeworld as a world of perception, and on the other hand to the layer-model of the lifeworld developed by Schütz and Thomas Luckmann. A consequence of this approach is that the lifeworld appears as a socially definable context that is detached from other experiences but on an equal footing with them with respect to their claim of validity. The term "lifeworld" does not denote a category that encompasses culture or nature but refers to a delimited action-space. Finally, I draw upon Schütz' s criterion-catalogue to characterize two domains of experience outside of the lifeworld, which play a central role for the process of differentiation of experience in modernity and for the phenomenological analysis of types of experience: experimental science and subjectivity. (shrink)

Gregor Schiemann verteidigt die Aktualität des aristotelischen und cartesianischen Naturbegriffes, die Natur in Gegensatz zu Nichtnatürlichem definieren. Als gültig könnnen sich diese traditionellen Naturbegriffe jedoch nur noch innerhalb begrenzter Kontexte erweisen. Im ersten Teil seines Buches zeigt der Autor, dass Aristoteles' Bestimmung der Natur als Gegenbegriff zur Technik in der Lebenswelt sowie Descartes' Dualismus von Natur und Geist für das eigene Bewusstseinserleben orientierungsleitend geblieben sind. Dass die Begriffspaare nicht nur in gesonderten Kontexten vorkommen, sondern sich ihre Anwendungen auch wechselseitig (...) durchdringen, führt er im zweiten Teil am Beispiel von Aristoteles' Seelenlehre und Descartes' Mechanismus aus. Die naturphilosophische und erkenntnistheoretische Untersuchung verbindet Elemente der analytischen Philosophie mit Ansätzen der Phänomenologie. Sie will zu einem pluralen Verständnis der Natur beitragen, das universelle Geltungsansprüche verabschiedet. (shrink)

The paper deals with the question of the structure of knowledge and the precise relationship between propositional "knowledge that" and dispositional "knowledge how." In the first part of my essay, I provide an analysis of the term 'knowing how' and argue that the usual alternatives in the recent epistemological debate – knowing how is either a form of propositional or dispositional knowledge – are misleading. In fact it depends on the semantic and pragmatic context of the usage of this term (...) whether 'knowing how' refers to a type of dispositional knowledge, to propositional knowledge, or to a hybrid form of both. Only in the first case, can one say that dispositional know how cannot be reduced to any form of propositional knowledge. Yet, this case is the most interesting one to consider in the investigation of the nature of knowledge, if one assumes that knowing that p presupposes "having found out that p." Having found something out, however, presupposes certain acts of epistemic inquiry and corresponding epistemic abilities. Examined more carefully, it is shown that the dispositional knowledge-how is a necessary condition for propositional knowledge-that, hence propositional knowledge-that is a species of the dispositional knowledge-how. Accordingly, dispositional knowledge has to be understood as being at the very core of our notion of knowledge, including propositional knowledge. (shrink)

Two seemingly contradictory tendencies have accompanied the development of the natural sciences in the past 150 years. On the one hand, the natural sciences have been instrumental in effecting a thoroughgoing transformation of social structures and have made a permanent impact on the conceptual world of human beings. This historical period has, on the other hand, also brought to light the merely hypothetical validity of scientific knowledge. As late as the middle of the 19th century the truth-pathos in the natural (...) sciences was still unbroken. Yet in the succeeding years these claims to certain knowledge underwent a fundamental crisis. For scientists today, of course, the fact that their knowledge can possess only relative validity is a matter of self-evidence. The present analysis investigates the early phase of this fundamental change in the concept of science through an examination of Hermann von Helmholtz's conception of science and his mechanistic interpretation of nature. Helmholtz (1821-1894) was one of the most important natural scientists in Germany. The development of this thoughts offers an impressive but, until now, relatively little considered report from the field of the experimental sciences chronicling the erosion of certainty. (shrink)

Indem dieser Band sich auf das Verhältnis von Naturerkennen und Natursein konzentriert, thematisiert er einen wesentlichen Ausschnitt aus dem weiten Spektrum von Böhmes philosophischer Arbeit. Um die Naturthematik möglichst breit zu entfalten und für Querverbindungen offenzuhalten, ist der vorliegende Band in drei Abschnitte gegliedert. Im ersten Abschnitt stehen Charakter und Reichweite der wissenschaftlichen Erkenntnis von Natur im Mittelpunkt. Der zweite Teil des Bandes stellt alternative Perspektiven auf Natur vor. Im dritten Teil schließlich stehen der Mensch und sein Verhältnis zu sich (...) selbst im Mittelpunkt der Untersuchungen. Inhaltsverzeichnis Krohn, Wolfgang: Wissenschaftsentwicklung zwischen Dezentrierung und Dekonstruktion. Stehr, Nico: Von den Grenzen der Macht wissenschaftlicher Erkenntnis. Schäfer, Wolf: Zweifel am Ende des Baconschen Zeitalters. Kamper, Dietmar: Wissen ist Ohnmacht. Macht ist Unwissen. Gamm, der Technik. Janich, Peter: Zeit und Natur. Kimmerle, Heinz: »Es ist Zeit, daß es Zeit wird«. Wie kann Zeit Zeit werden? Schiemann, Gregor: Natur auf dem Rückzug. Zur Relevanz der aristotelischen Unterscheidung von Natur und Technik. Hauskeller, Michael: Ist Schönheit eine Atmosphäre?. Zur Bestimmung des landschaftlich Schönen. Schmitz, Hermann: Situationen und Atmosphären. Zur Ästhetik und Onthologie bei Gernot Böhme. Rehmann-Sutter, Christoph: Über Relationalität. Was ist das »Ökologische« in der Naturästhetik? Meyer-Abich, Klaus Michael: Erinnerung an die natürliche Mitwelt. Andreas-Griesebach, Manon: Idee plus Erfahrung. Goethes Begründung eines neuen Typs von Naturwissenschaft. Engelhardt, Dietrich von: Madame de Stael über Naturphilosophie, Naturwissenschaft und Medizin in De l'Allemagne. Deneke, Michael: Schramm, Engelbert: »Soziale Naturwissenschaft«. Zwischen Sozialwissenschaften und Naturwissenschaften. Böhme, Hartmut: Enthüllen und Verhüllen des Körpers. Biblische, mythische und künstlerische Deutungen des Nackten. Lippe, Rudolf zur: Eine Logik des gestischen Wissens. Müller, Rudolf Wolfgang: Gernot Böhme - Anima naturaliter japonica. Hoffmann, Gisbert: Das menschliche Sein als mediales. Martens, Ekkehard: »Natürlich« denken?. Heideggers Pseudosokratismus als Irrationalismus. Fleischer, Helmut: Naturalität ohne Naturalismus. Zum lebensweltlichen Fundus jeder höheren Erkenntnis-Artistik. Gerhard: Technik als Medium. Grundlinien einer Philosophie. (shrink)

Zuerst werden die Argumente rekonstruiert, die dafür sprechen, Einsteins Wort, dass Gott nicht würfelt, als Ausdruck eines überholten deterministischen Weltbildes anzusehen. Anschließend werden Forschungsergebnisse der letzten Jahrzehnte benannt, die für eine Neubewertung seiner Position zur dominanten Interpretation der Quantenmechanik sprechen. Den Abschluß bildet die Diskussion der Möglichkeiten einer Reinterpretation seines Satzes vom nicht würfelnden Gott.

Ordinary language and scientific discourse are filled with linguistic expressions for dispositional properties such as “soluble,” “elastic,” “reliable,” and “humorous.” We characterize objects in all domains – physical objects as well as human persons – with the help of dispositional expressions. Hence, the concept of a disposition has historically and systematically played a central role in different areas of philosophy ranging from metaphysics to ethics. The contributions of this volume analyze the ancient foundations of the discussion about disposition, examine the (...) problem of disposition within the context of the foundation of modern science, and analyze this dispute up to the 20th century. Furthermore, articles explore the contemporary theories of dispositions. (shrink)

Introduction to Debating Dispositions. Issues in Metaphysics, Epistemology, and Philosophy of Mind, ed. by Gregor Damschen, Robert Schnepf, and Karsten R. Stueber, Berlin/New York: de Gruyter 2009.

The aim of this paper is to develop and defend an Attentional View of bodily awareness, on which attention is necessary for bodily awareness. The original formulation of the Attentional View is due to Marcel Kinsbourne. First, I will show that the Attentional View of bodily awareness as formulated by Kinsbourne is superior to other accounts in the literature for characterizing the relationship between attention and bodily awareness. Kinsbourne’s account is the only account in the literature so far which can (...) accommodate key neurological diseases such as personal neglect. Second, when I consider Kinsbourne’s view in more detail, I will argue that Kinsbourne’s Attentional View faces problems because it is too reductive. Kinsbourne deviates from the standard taxonomy on which there is a body schema and a body image. Instead he reduces the body image to the neural representation of the body in the somatosensory cortex, the body schema and attentional shifts. I will present two challenges to Kinsbourne’s view which demonstrate that Kinsbourne’s reduction of the body image is unsuccessful. Finally, I will present a revised version of the Attentional View that is both empirically adequate and philosophically satisfactory. (shrink)

Suppose a fire broke out in a fertility clinic. One had time to save either a young girl, or a tray of ten human embryos. Would it be wrong to save the girl? According to Michael Sandel, the moral intuition is to save the girl; what is more, one ought to do so, and this demonstrates that human embryos do not possess full personhood, and hence deserve only limited respect and may be killed for medical research. We will argue, however, (...) that no relevant ethical implications can be drawn from the thought experiment. It demonstrates neither that one always ought to let the embryos die, nor does it allow for any general conclusion concerning the moral status of human embryos. (shrink)

When in doubt, for the embryo. New arguments on the moral status of human embryos. - In the first part of our essay we distinguish the philosophical from the legal and political level of the embryo debate and describe our indirect justification strategy. It consists in renouncing a determination of the dignity-giving φ-properties and instead starting from premises that are undoubted by all discussion partners. In the second part we reconstruct and criticize the species, continuum, identity and potentiality arguments. The (...) species argument only has a certain plausibility, if at all, as a critical argument. From the continuum argument and identity argument we take over the idea of numerical identity (NI) and link it with the core idea of the potentiality argument (P). So we come to the NIP argument: -/- (NIP) -/- (1) Every living human body that is the bearer of (or has) potential φ-properties has dignity. (2) Every viable human embryo is a living human body that is the bearer of (or has) potential φ properties. Therefore, (3) Every viable human embryo has dignity. -/- Reversibly comatose people and newborns are protected because they have the potential to have actual personal characteristics in the future; our thesis is that embryos that are capable of development also have the same potential in moral terms. The basic idea of numerical identity, with which we support the second premise, is that every human being, from embryonic existence to adulthood, forms a physical unity. In a detailed part, we deal with the crown princess, gametes, parthenogenesis, somatic cell, pronuclear stage, biological heteronome early embryo, multiple, fusion, Siamese twin, hydatidiform mole and finally trophoblast problems. In a third part, the indirect argument is supplemented by a metatheoretical cautionary argument. It states that in situations where there is doubt as to whether a being falls within the scope of a moral norm, but there are sufficiently strong reasons for this subsumption, it must be assumed that this is the case if the contrary assumption and the positive effects it may have are in no acceptable proportion to the moral harm that would result if that subsumption were not made. The main result of our considerations is therefore: When in doubt, for the embryo. (shrink)

Hermann von Helmholtz hat als Naturforscher sowohl die Physik als auch die Physiologie um eine beeindruckende Anzahl grundlegender Erkenntnisse bereichert, ihr heutiges Selbstverständnis entscheidend mitgeprägt, ihre Verfahren auf neue Gegenstandsbereiche angewendet und war führend an ihrem institutionellen Ausbau zu Laborwissenschaften beteiligt.

Aus dem vielfältigen Werk von Hermann von Helmholtz versammelt diese Ausgabe die im engeren Sinne philosophischen Abhandlungen, vor allem zur Wissenschaftsphilosophie und Erkenntnistheorie, sowie Vorträge und Reden, bei denen der Autor seine Ausnahmestellung im Wissenschaftsbetrieb nutzte, um die Wissenschaften und ihre Institutionen in der bestehenden Form zu repräsentieren und zu begründen. Ein Philosoph wollte Helmholtz nicht sein, aber er legte der philosophischen Reflexion wissenschaftlicher Erkenntnis und wissenschaftlichen Handelns große Bedeutung bei. Vor allem bezog er, in der Regel ausgehend von seinen (...) fachwissenschaftlichen Forschungen, in den verschiedensten Kontexten zu erkenntnistheoretischen und methodologischen Problemen der Wissenschaften Stellung. Bereits »Ueber die Erhaltung der Kraft« (1847) lässt erkennen, wie verwoben naturwissenschaftliche Grundlagenforschung und philosophische Grundlagenreflexion in seinem Werk sind. Die aus den frühen sinnesphysiologischen Forschungen hervorgegangene empiristische Wahrnehmungslehre trug ihm den Ruf ein, ein maßgeblicher Vertreter des Neukantianismus zu sein. Spätere Arbeiten v.a. zur Geometrie und Arithmetik – das zeigt die vorliegende Ausgabe – stellen jedoch eine radikale Absage an den konstitutiven Kern des Kantianismus (nämlich die Existenz synthetischer Urteile a priori) dar. Helmholtz’ philosophische Beiträge sind bisher in ihrer Vollständigkeit nicht annähernd so gut zugänglich wie sein naturwissenschaftliches Werk. Die Ausgabe enthält außerdem bibliographische Vorberichte zur Einordnung, detaillierte Namens- und Sachregister sowie mit 575 Einträgen für den Zeitraum zwischen 1842 und 2012 die erste umfassende Bibliographie von Helmholtz verfasster Werke überhaupt. »Ich glaube, dass der Philosophie nur wieder aufzuhelfen ist, wenn sie sich mit Ernst und Eifer der Untersuchung der Erkenntnissprocesse und der wissenschaftlichen Methode zuwendet. Da hat sie eine wirkliche und berechtigte Aufgabe.« Helmholtz in einem Brief um 1875. (shrink)

Gregor Schiemann führt allgemeinverständlich in das Denken dieses Physikers ein. Thema sind die Erfahrungen und Überlegungen, die Heisenberg zu seinen theoretischen Erkenntnissen geführt haben, die wesentlichen Inhalte dieser Erkenntnisse sowie die Konsequenzen, die er daraus für die Geschichte der Physik und das wissenschaftliche Weltbild gezogen hat. Heisenbergs Vorstellungswelt durchzieht durch ein Spannungsverhältnis, das heute noch das Denken vieler Wissenschaftlerinnen und Wissenschaftler bewegt. Er ist um ein umfassendes Verständnis der Naturprozesse bemüht, zugleich aber von der Berechenbarkeit und Beherrschbarkeit von Phänomenen (...) auch dann schon fasziniert, wenn die zugrunde liegenden Prozesse erst teilweise verstanden sind. Aus der Geschichte der Physik zieht er die wirkungsreiche Lehre, daß sich die naturwissenschaftliche Erkenntnis nicht kontinuierlich, sondern sprunghaft in Form von Revolutionen entwickelt. Die Reichweite des physikalischen Wissens begrenzt er in einer Schichtentheorie der Welt, nach der die komplexen Phänomene des Lebens nicht allein durch die Wechselwirkungen zwischen ihren Bestandteilen erklärt werden können. Der zunehmenden Technisierung der Welt steht Heisenberg kritisch gegenüber. Seiner Zeit weit voraus, glaubt er, daß die Technisierung der Welt eine epochal neue Stufe erreicht habe, in der der Mensch „nur noch sich selbst“ gegenüberstehe. (shrink)

Werner Heisenberg made an important – and as yet insufficiently researched – contribution to the transformation of the modern conception of science. This transformation involved a reassessment of the status of scientific knowledge from certain to merely hypothetical – an assessment that is widely recognized today. I examine Heisenberg’s contribution in particular by taking his conception of “closed theories” as an example according to which the established physical theories have no universal and exclusive, but only a restricted validity. Firstly, I (...) characterize the historical process of hypothetization of claims to validity. Then, secondly, I reconstruct Heisenberg’s conception, as far as it can be derived from his popular writings, relating it to the process of hypothetization. Finally, I touch on the history of its reception and compare it with conceptions of science that emphasize the significance of the hypothetical for the modern theories of natural sciences. Compared to these conceptions, Heisenberg’s contribution turns out to be rather independent. (shrink)

It can be said that Rousseau is one of the most acute thinkers of the corruption of civilisation. In fact, the Second Discourse and the Essay on the Origins of Languages could be read as elaborate analyses of advancing social and cultural decline inasmuch as mankind is continually moving away from the original state of natural innocence. But Rousseau’s idea of corruption is not straightforward. I try to show that in the Essay, Rousseau emphasizes the natural causes for corruption. I (...) argue that an opposition between necessity and contingency, which more accurately represents the two modes operating in Rousseau’s doctrine, should replace the standard nature/culture divide. The contingency of natural catastrophes is found to be ultimately responsible for the corruption in the social realm, which is therefore largely driven by natural causes. (shrink)

The Contingency Postulate of Truth. - Is there a statement that cannot be false under any contingent conditions? Two well-known philosophical schools have given contradictory answers to this question about the existence of a necessarily true statement: Fallibilists (Albert, Keuth) have denied its existence, transcendental pragmatists (Apel, Kuhlmann) and objective idealists (Wandschneider, Hösle) have affirmed it. Dieter Wandschneider has (following Vittorio Hösle) translated the principle of fallibilism, according to which every statement is fallible, into a thesis which he calls the (...) contingency postulate of truth (CPT). It says: <For every true statement there are contingent conditions.> If this postulate were true, it would mark an insurmountable boundary of knowledge: a final epistemic justification would then not be possible. Wandschneider has therefore developed a counterargument to show that the contingency postulate of truth cannot be formulated without contradiction and implies the thesis that there is at least one necessarily true statement. This essay deals with the systematic question whether the contingency postulate of truth really cannot be presented without contradiction. To this end I will first present the contingency postulate and the associated problems (I.). Then I will analyze Wandschneider's argument against the consistency of the contingency postulate (II.) and finally reject it with the help of some considerations from the field of epistemic logic (III.). (shrink)

In his "Ontological proof", Kurt Gödel introduces the notion of a second-order value property, the positive property P. The second axiom of the proof states that for any property φ: If φ is positive, its negation is not positive, and vice versa. I put forward that this concept of positiveness leads into a paradox when we apply it to the following self-reflexive sentences: (A) The truth value of A is not positive; (B) The truth value of B is positive. Given (...) axiom 2, sentences A and B paradoxically cannot be both true or both false, and it is also impossible that one of the sentences is true whereas the other is false. (shrink)

Descartes and Architecture -/- The article analyses the architectural metaphor in Descartes' Discourse on Method and The Seventh replies. The idea of Descartes' project, introduced to the reader as a construction of a building and planning of a city, is much more indebted to its architectural imagery than, or so its critics say, is "sound" for a philosophical theory. Architecture is an analogon of philosophy in Descartes' texts. By producing a figure of philosopher-architect, Descartes tries to legitimate his philosophical theory (...) using architectural discourse. Descartes always uses the examples of architecture and urban planning when he intends to introduce his great project of a new beginning in philosophy. This new beginning is manifest in two levels: first, as a denial of traditional metaphysics of the Schools in the Discourse, and second, as a denial of one’s own beliefs in the Meditations using methodical doubt. In the conclusion, the article emphasises through Derrida's analysis of metaphor that, given the metaphysical nature of any metaphor, Descartes’ metaphor also cannot appear as a mere rhetorical figure. (shrink)

"Dieu fainéant? God and Bodies in Descartes, Malebranche, and Leibniz" Conservation, concurrence with secondary causes, and occasionalism are the three attitudes that God can have towards the created universe in early modern philosophy. The aim of this article is to show how and in what forms these three originally mediaeval theories had survived the seventeenth century in Descartes, Malebranche, and Leibniz. I argue that although it cannot always be unequivocally determined which of the three doctrines each of the thinkers is (...) indebted to, Descartes should nevertheless be interpreted as a concurrentist, Malebranche as an occasionalist, and Leibniz can be read as a mere conservationist. The conservation of substances in existence being nothing but a continual creation, we claim (against the famous thesis of Alexandre Koyré) that Leibniz’s God can be called neither Dieu fainéant nor God of the Sabbath day. (shrink)

"Language and its Public Features: Reorganizing the Trivium in Locke's Essay and Port-Royal Logic" The new theory of language in the 17th century coincides with the end the traditional order of disciplines in the trivium (grammar, logic and rhetoric), which in the mediaeval times provided a comprehensive view of the problems of discourse. The article focuses on some key passages in Port-Royal Logic and Locke's Essay that provide us with a typical early modern scheme of linguistic representation, characterised by heavily (...) emphasized dualism of ideas and words. Since ideas are also the meanings of words and are ontologically essentially private, one can raise the question, where in this analysis of language is it even possible to locate its public features. The article tries to show that private language is not only possible for Locke and the Port-Royalists, but that it is even a necessary and primary character of language. Language becomes a public medium of communication only on the junctures of private meanings constituted by the “common use” of words. The article then focuses on almost complete marginalisation in the two works of the theory of public speech. Rhetoric, in the 17th century often reduced to mere eloquence, has no place in philosophy, and the duties of making speeches persuasive are taken over by reason alone. To show how the domains of jurisdiction of the trivial disciplines had been transformed in the linguistic theories proposed by the Port-Royal Logic and Locke, one can construct a hypothetical early modern trivium in the light of the following order: idea – word – figure, or, logic – grammar – rhetoric. Rhetoric is found to have kept its structural place only to be singled out as dangerous. (shrink)

Can we find propositions that cannot rationally be denied in any possible world without assuming the existence of that same proposition, and so involving ourselves in a contradiction? In other words, can we find transworld propositions needing no further foundation or justification? Basically, three differing positions can be imagined: firstly, a relativist position, according to which ultimately founded propositions are impossible; secondly, a meta-relativist position, according to which ultimately founded propositions are possible but unnecessary; and thirdly, an absolute position, according (...) to which such propositions are necessary. In this short essay I show that under the premise of modal logic S5 with constant domain there are ultimately founded propositions and that their existence is even necessary, and I will give some reasons for the superiority of S5 over other logics. (shrink)

Forms of justification. On the structure and scope of self-refutation arguments in Plato, Cicero and Apel. - In this essay, the structure and scope of transcendental types of argumentation are analyzed, compared and criticized on the basis of the reception of two antiskeptical types of reasoning in ancient philosophy (Plato, Parmenides 135b-c; Cicero, Lucullus § 28) by a contemporary philosophical author (Karl-Otto Apel). Plato puts forward a transcendental argument for the inevitability of a final knowledge. Cicero argues that a principle (...) of fallibilism occurring with universal claim contradicts itself. In Karl-Otto Apel's transcendental pragmatic variant of philosophy, the two types of self-refutation arguments developed in Plato's and Cicero's dialogues are brought together into a single argumentation. (shrink)

The principle of performative contradiction. On the epistemological significance of the dialogue form in Plato's "Euthydemus". - In this study, an analysis of the section 285d-288a of Plato's "Euthydemus" shall show two things: (1) The sophistic model of a world in which there is no contradiction, in which every linguistic utterance is true and every action correct, has no semantic inconsistencies, but can only be rejected with the help of the principle of performative contradictions. (2) It is precisely these performative (...) contradictions that make it necessary for Plato to philosophize not in treatises but in dialogues; in other words, that the philosophical relevance of the Platonic form of dialogue can be seen, among other things, in the fact that - in contrast to philosophical forms of representation such as the treatise, the essay, and a henology as reconstructed and represented by the Tübingen School - it permits the representation of performative reflections and performative contradictions. (shrink)

The conception that the world can be represented as a system of levels of being can be traced back to the beginnings of European philosophy and has lost little of its plausibility in the meantime. One of the important modern conceptions of levels was developed by Nicolai Hartmann. It exhibits remarkable similarities and contrasts with the classification of the real developed by Werner Heisenberg in his paper Ordnung der Wirklichkeit (Order of Reality). In my contribution I will introduce these two (...) conceptions of levels and compare their salient features. I will discuss them as variants of a scientific worldview that attempts to forge a link to the perspective of the lifeworld. Then I will go on to argue that the shortcomings of these conceptions can be remedied by extending them with the level of the very small and that of the very large. The introduction of these ontologically fundamental levels is based on scientific knowledge that for the most part eludes he intuitively representable character of lifeworld experience. Historical changes in science and the lifeworld could lead to the notion that reality can be represented as a system of levels being challenged in future. (shrink)

Soweit Engels' Position zum Geltungsanspruch der Naturwissenschaften seiner Zeit aus diesen Texten hervorgeht, kann man sie kaum als konsistent bezeichnen. Erkenntnisse, an deren Gewissheit in der Naturforschung der zweiten Hälfte des 19. Jahrhunderts nicht ernsthaft gezweifelt wurde, werden von ihm teils umstandslos übernommen, teils aber auch einer geltungskrltischen Analyse unterzogen. In weitgehender Unahängigkeit von seinen weltanschaulichen Ambitionen kommt Engels über die Untersuchung der Struktur naturwissenschaftlicher Erkenntnisprozesse zu einer bisher erst wenig beachteten und seiner Zeit vorauseilenden Einsicht in die relativen Geltungsbedingungen (...) des experimentell erzeugten Wissens. Die widersprüchliche Form,in der er seine heute noch sehr aktuelle Kritik am Wahrheitsanspruch der Naturwissenschaften vorträgt, ist der damaligen Umbruchssituation dieser Disziplinen geschuldet und gibt seinem Werk ein hohes Mass an Authentizität. In Anlehnung an Engels' Klassifizierung der Wissenschaften sollen hier die wichtigsten geltungskritischen Ansätze rekonstruiert werden. In dieser Perspektive, die seine Skepsis gegenüber den naturwissenschaftlichen Erkenntnisleistungen hervortreten lässt, erscheint die von ihm behauptete ausgezeichnete Geltung der Dialektik in einem neuen Licht: Sie ist nicht mehr die immer schon vorausgesetzte Grundannahme seiner wissenschafts- und naturtheoretischen Auffassungen, sondern Reaktion auf einen Relativismus, der aus der Reflexion über die Entwicklung der Naturforschung unabweisbar zu folgen scheint und jedes Streben nach einem wissenschaftlich fundierten, einheitlichen Naturbild zunichte macht. (shrink)

Definition, conditions and bearers of being a person - three philosophical aporias. -/- In this article I examine the philosophical question of how to define the concept of the person in a non-arbitrary way, how to find out the determining conditions of being a person and how to enumerate the bearers of being a person. I come to the conclusion that the question of a non-arbitrary definition, of the essential conditions and of the bearers of being a person has not (...) yet been clarified; it is not sufficiently clear what we actually mean or should mean by "person" - beyond conventions, disciplinary boundaries and doctrines. This results in three philosophical aporias of the concept of the person. (shrink)

Autologos. A dialogue on fundamental logic. - In this dialogue of three dialogue partners, an attempt is made to prove the logical prerequisites of any meaningful dialogue by using transcendental arguments. Among these inescapable logical premises are a semantics as strong as that of modal logic S5, and an epistemic anti-realism.

Is knowledge-that a species of knowledge-how? - How is knowledge-how related to knowledge-that? Three possible answers are: (A1) intellectualism: knowledge-how is a subspecies of knowledge-that. (A2) Rylean account: knowledge-how and knowledge-that are completely distinct. (A3) anti-intellectualism: knowledge-that is a subspecies of knowledge-how. In this essay I present a new anti-intellectualist reductio argument that shows that answer A3 is true: knowledge-that is a subspecies of knowledge-how.

Do the changes that have taken place in the structures and methods of the production of scientific knowledge and in our understanding of science over the past fifty years justify speaking of an epochal break in the development of science? Gregor Schiemann addresses this issues through the notion of a scientific revolution and claims that at present we are not witnessing a new scientific revolution. Instead, Schiemann argues that after the so-called Scientific Revolution in the sixteenth and seventeenth centuries, (...) a caesura occurred in the course of the nineteenth century that constituted a departure from the early modern origins of science. This change was characterized by the loss of certainty on the part of the scientists, by the steadily increasing importance of scientific communities (rather than individuals), and by the systematic intertwinement of scientific and societal development. As to present science, Schiemann admits that important changes have occurred, but he denies the conflation of nature and culture: even the OncoMouse is a natural organism, though a seriously damaged one. (shrink)

Theophrastus' treatise "Metaphysics" contains a compact and critical reconstruction of unsolved systematic problems of classical Greek philosophy. It is primarily about fundamental problems of ontology and natural philosophy, such as the question of the interdependence of principles and perceptible phenomena or the plausibility of teleology as a methodical principle of the explanation of nature. The aim of the critical Greek-German edition (with introduction and commentary) is to make visible the systematic significance of Theophrastus' critique of metaphysics.

Reflective equilibrium ("RE", for short) is a method of justification which works roughly as follows: We start with our pre-theoretical judgements (about, e.g. moral issues) and try to explain them by a systematic theory. This leads to a process in which judgements and principles are mutually adjusted to each other until a state of equilibrium is reached. For more than half a century, RE has been very popular, as well as controversial, among philosophers of many persuasions. Given how frequently the (...) method is mentioned, embraced and attacked, it is surprising that only very few attempts have been made at analysing and developing RE in detail. This topical collection brings together papers that develop RE on a conceptual level, analyse it using formal methods or investigate applications of RE. (shrink)

In searching for the origins of current conceptions of science in the history of physics, one encounters a remarkable phenomenon. A typical view today is that theoretical knowledge-claims have only relativized validity. Historically, however, this thesis was supported by proponents of a conception of nature that today is far from typical, a mechanistic conception within which natural phenomena were to be explained by the action of mechanically moved matter. Two of these proponents, Hermann von Helmholtz and his pupil Heinrich Hertz, (...) contributed significantly to the modernization of the conception of science. Paradigmatic for their common contribution to this development is the way in which they employed the concept of image. By considering the origin and the different meanings of this concept we may trace a line of development which begins with Helmholtz's original claim that a universally and forever valid theory provides a unique representation of nature. It continues with the realization that the status of scientific knowledge is capable of revision; and it arrives at Hertz's admission that a variety of theories over a domain of objects is possible, at least at times. (shrink)

Reflective equilibrium (RE) is often regarded as a powerful method in ethics, logic, and even philosophy in general. Despite this popularity, characterizations of the method have been fairly vague and unspecific so far. It thus may be doubted whether RE is more than a jumble of appealing but ultimately sketchy ideas that cannot be spelled out consistently. In this paper, we dispel such doubts by devising a formal model of RE. The model contains as components the agent’s commitments and a (...) theory that tries to systematize the commitments. It yields a precise picture of how the commitments and the theory are adjusted to each other. The model differentiates between equilibrium as a target state and the dynamic equilibration process. First solutions to the model, obtained by computer simulation, show that the method allows for consistent specification and that the model’s implications are plausible in view of expectations on RE. In particular, the mutual adjustment of commitments and theory can improve one’s commitments, as proponents of RE have suggested. We argue that our model is fruitful not only because it points to issues that need to be dealt with for a better understanding of RE, but also because it provides the means to address these issues. (shrink)