By and large, the conditional connective in three-valued logic has two different functions. First, by means of a deduction theorem, it can express a specific relation of logical consequence in the logical language itself. Second, it can represent natural language structures such as "if/then'' or "implies''. This chapter surveys both approaches, shows why none of them will typically end up with a three-valued material conditional, and elaborates on connections to probabilistic reasoning.

By and large, the conditional connective in three-valued logic has two different functions. First, by means of a deduction theorem, it can express a specific relation of logical consequence in the logical language itself. Second, it can represent natural language structures such as "if/then'" or "implies''. This chapter surveys both approaches, shows why none of them will typically end up with a three-valued material conditional, and elaborates on connections to probabilistic reasoning.

Welche Rolle kann und muss der Humanismus in der Epoche der Globalisierung spielen? Rekonstruktiv und kritisch diskutiert Hilmar Kallweit die Zukunftsfähigkeit des anthropologisch-ethischen Deutungsentwurfs, der für den Humanismus seit der Antike leitend war. Anhand einschlägiger Quellen der beiden zentralen Phasen des nachantiken Humanismus, des rhetorischen Humanismus der Frühen Neuzeit und des klassischen Humanismus an der Schwelle zur Moderne, entwickelt er Konsequenzen für ein Erkenntnisprogramm, das dem Humanismus erneute Geltung und kulturelle Orientierungskompetenz verschaffen kann....

This article introduces and defends a probabilistic measure of the explanatory power that a particular explanans has over its explanandum. To this end, we propose several intuitive, formal conditions of adequacy for an account of explanatory power. Then, we show that these conditions are uniquely satisfied by one particular probabilistic function. We proceed to strengthen the case for this measure of explanatory power by proving several theorems, all of which show that this measure neatly corresponds to our explanatory intuitions. Finally, (...) we briefly describe some promising future projects inspired by our account. (shrink)

Scientific theories are hard to find, and once scientists have found a theory, H, they often believe that there are not many distinct alternatives to H. But is this belief justified? What should scientists believe about the number of alternatives to H, and how should they change these beliefs in the light of new evidence? These are some of the questions that we will address in this article. We also ask under which conditions failure to find an alternative to H (...) confirms the theory in question. This kind of reasoning is frequently used in science and therefore deserves a careful philosophical analysis. 1 Introduction2 The Conceptual Framework3 The No Alternatives Argument4 Discussion I: A Quantitative Analysis of the No Alternatives Argument5 Discussion II: The Number of Alternatives and the Problem of Underdetermination6 ConclusionsAppendix AAppendix B. (shrink)

Bayesian epistemology addresses epistemological problems with the help of the mathematical theory of probability. It turns out that the probability calculus is especially suited to represent degrees of belief (credences) and to deal with questions of belief change, confirmation, evidence, justification, and coherence. Compared to the informal discussions in traditional epistemology, Bayesian epis- temology allows for a more precise and fine-grained analysis which takes the gradual aspects of these central epistemological notions into account. Bayesian epistemology therefore complements traditional epistemology; it (...) does not re- place it or aim at replacing it. (shrink)

This paper explores trivalent truth conditions for indicative conditionals, examining the “defective” truth table proposed by de Finetti and Reichenbach. On their approach, a conditional takes the value of its consequent whenever its antecedent is true, and the value Indeterminate otherwise. Here we deal with the problem of selecting an adequate notion of validity for this conditional. We show that all standard validity schemes based on de Finetti’s table come with some problems, and highlight two ways out of the predicament: (...) one pairs de Finetti’s conditional with validity as the preservation of non-false values, but at the expense of Modus Ponens; the other modifies de Finetti’s table to restore Modus Ponens. In Part I of this paper, we present both alternatives, with specific attention to a variant of de Finetti’s table proposed by Cooper and Cantwell. In Part II, we give an in-depth treatment of the proof theory of the resulting logics, DF/TT and CC/TT: both are connexive logics, but with significantly different algebraic properties. (shrink)

This paper generalizes the (epistemic) preface paradox beyond the principle of belief aggregation and constructs a similar paradox for deontic reasoning. The analysis of the deontic case yields a solution strategy---restricting belief/obligation aggregation rather than giving it up altogether---that can be transferred to the epistemic case. Our proposal amounts to a reasonable compromise between two goals: (i) sticking to bridge principles between evidence and belief, such as the Lockean Thesis, and (ii) obtaining a sufficiently strong logic of doxastic and deontic (...) reasoning. (shrink)

How should we reason in science? Jan Sprenger and Stephan Hartmann offer a refreshing take on classical topics in philosophy of science, using a single key concept to explain and to elucidate manifold aspects of scientific reasoning. They present good arguments and good inferences as being characterized by their effect on our rational degrees of belief. Refuting the view that there is no place for subjective attitudes in 'objective science', Sprenger and Hartmann explain the value of convincing evidence (...) in terms of a cycle of variations on the theme of representing rational degrees of belief by means of subjective probabilities (and changing them by Bayesian conditionalization). In doing so, they integrate Bayesian inference—the leading theory of rationality in social science—with the practice of 21st century science. Bayesian Philosophy of Science thereby shows how modeling such attitudes improves our understanding of causes, explanations, confirming evidence, and scientific models in general. It combines a scientifically minded and mathematically sophisticated approach with conceptual analysis and attention to methodological problems of modern science, especially in statistical inference, and is therefore a valuable resource for philosophers and scientific practitioners. (shrink)

Der Fokus auf die Sprache bestimmte die Philosophie des 20. Jahrhunderts, die sowohl die Dekonstruktion der Metaphysik als auch den Tod des Subjekts verkündete. Der Psychoanalytiker Jacques Lacan führte das Subjekt des Begehrens wieder in den philosophischen Diskurs ein und entwickelte aus der Struktur der Sprache eine neue, symbolische Logik des Unbewussten. Die Logik des Signifikanten, deren Geschichte diese Arbeit nachzeichnet, um sie zu transzendieren, stellt die Frage nach der Dialektik von Signifikant und Begriff, Sprache und Logik, Bewusstem und Unbewusstem, (...) Ich und Subjekt, Gesetz und Begehren, Denken und Sein. Durch die Funktionen der Metonymie, der Metapher und des Stepppunktes sowie über das Schema der vier Diskurse werden die Tropen der traditionellen philosophischen Logik - Begriff, Urteil und Schluss - neu interpretiert. Das Peirce'sche Konzept der Abduktion ermöglicht es, sowohl den Borromäischen Knoten Lacans - Imaginäres, Symbolisches und Reales - wie auch die transzendentale Dialektik und Ontologie der Moderne, die auf Kants und Hegels Revolutionen der Denkungsart zurückgehen, schlusslogisch zu begründen. (shrink)

Diese komparatistische Monographie stellt zentrale Kategorien und Theorien der Literaturwissenschaft dar. Sie synthetisiert und bewertet den Stand der Forschung und unterwirft viele Dogmen der neueren Forschung einer kritischen Analyse. Resultat ist eine Reformulierung des theoretischen Kernbestandes der Literaturwissenschaft für die zentralen Kategorien Interpretation, Fiktion, Performativität, Intertextualität, Gattung, Epoche. Der Band richtet sich an alle Wissenschaften, die mit Texten als Erkenntnisobjekten umgehen; neben der Literaturwissenschaft sind also auch die Theaterwissenschaft, die Sprachwissenschaft, die Sprachphilosophie, die Kunstwissenschaft, die Geschichtswissenschaft sowie Theologie und Jurisprudenz (...) angesprochen. (shrink)

Attention is automatically allocated to stimuli that are opposite in valence to the current motivational focus (Rothermund, 2003; Rothermund, Voss, & Wentura, 2008). We tested whether this incongruency effect is due to affective–motivational counter-regulation or to an increased salience of stimuli that mismatch with cognitively activated information. Affective processing biases were assessed with a search task in which participants had to detect the spatial position at which a positive or negative stimulus was presented. In the motivational condition, positive or negative (...) affective–motivational states were induced by performance feedback after each trial. In the cognitive activation condition, participants memorised the word “good” or “bad” during the search task. The affective incongruency effect was replicated in the motivational condition, whereas an affective congruency effect obtained in the cognitive activation condition. These findings support an explanation of affective incongruency effects in terms of automatic counter-regulation that is motivational in nature. (shrink)

The Spokesman of Deutsche Bank's Board of Managing Directors delivered The Gilbart Lecture on Banking last year under the auspices of King's College London at an occasion sponsored by the National Westminster Bank plc and organised by the Chartered Institute of Bankers. The text of Herr Kopper's lecture is reproduced here with permission.

The Spokesman of Deutsche Bank's Board of Managing Directors delivered The Gilbart Lecture on Banking last year under the auspices of King's College London at an occasion sponsored by the National Westminster Bank plc and organised by the Chartered Institute of Bankers. The text of Herr Kopper's lecture is reproduced here with permission.

In this book, linguists and philosophers combine to offer a unique insight not only into Grice's contribution to philosophy of language, but on his theories of natural and non-natural meaning, implicatures and the semantic-pragmatic distinction.

This chapter describes the phenomenology of the political world. Phenomenology must get underway with an analysis of the political world. The chapter evaluates more precisely the relation between the concept of world or worldliness and the openness of the political. Using the term ‘political world’ is preferred to utilising the traditional terms because it is less burdened by prejudice. The guiding impulse towards the clarification of the Sache of political philosophy as political world stems from Hannah Arendt, who does not (...) make use of the phenomenological conception of ‘horizon’. Science's confidence that it can attain a knowledge free of all horizonal plurality is among the most fundamental prejudices that phenomenology endeavours to overcome. Phenomenology is the decided present renewal of the most ancient idea of epistêmê. (shrink)

The achievement of unity and perfection in human action begins with a struggle for these ideals in human thought. Dr. Klaus Vondung in his collection of essays that span four decades explores examples of this in different fields of human inquiry: striving for harmonious existential unity of talents and morals, intellect and emotion; seeking to make natural sciences consonant with the humanities and thereby moving toward a more universal, "perfect" science; and establishing unity in political structures and cultivating in (...) this unity a homogenous society. Vondung has given special devotion to National Socialism as a context wherein he revisits its perverted motivation and the consequences of this despite noble ideals. Particular focus in following the thread of unity and perfection in human intellectual and practical ambitions ultimately hones in on the combination of religion and politics. Vondung in these essays unpacks the ways in which this continues to fascinate and disturb us, and in his expertise he uses National Socialism to connect this pursuit of unity and perfection to what he calls one of the signature marks of modernity--namely, secular apocalypticism. This claim stands in opposition to Eric Voegelin's remark that Gnosticism, rather, is "the nature of modernity." Vondung, who studied and wrote his dissertation under Voegelin, grapples with the contrast of these positions. Vondung is willing to challenge Voegelin, but ultimately his treatment of the latter bears the quality of tribute to this great scholar. Vondung also explores the points of contact between apocalypticism and Hermetic speculation. Despite the independence of the religious and philosophical doctrines of Hermeticism, there are parallels to be found. Apocalypticism and Hermeticism originated in antiquity and yet each represents a tradition that still holds footing today. Vondung furthermore leads the reader to see the project of salvation found in both even as each operates with a different scope. This collection of essays centers itself on a perspective of the human pursuit of unity and perfection, directly or indirectly, as objectives of intellectual endeavors, existential ideals, as social or political outcomes, and in the case of National Socialism even as perverse aberrations. Vondung's particular treatment of Voegelin's work likewise establishes what the former identifies as a stand-out question of this study: Does the search of order in history show us the unity of the history of humankind? (shrink)

This paper develops a trivalent semantics for the truth conditions and the probability of the natural language indicative conditional. Our framework rests on trivalent truth conditions first proposed by Cooper (1968) and Belnap (1973) and it yields two logics of conditional reasoning: (i) a logic C of certainty-preserving inference; and (ii) a logic U for uncertain reasoning that preserves the probability of the premises. We show systematic correspondences between trivalent and probabilistic representations of inferences in either framework, and we use (...) the distinction between the two systems to cast light on the validity of inferences such as Modus Ponens, Or-To-If, and Conditional Excluded Middle. Specifically, the conditional behaves monotonically in C, but non-monotonically in U; Modus Ponens is valid in C, but valid in U only for non-nested conditionals. The result is a unified account of the semantics and epistemology of indicative conditionals that can be fruitfully applied to analyzing the validity of conditional inferences. (shrink)

In the age of digitization, the world seems to be reducible to a digital computer. However, mathematically, modern quantum field theories do not only depend on discrete, but also continuous concepts. Ancient debates in natural philosophy on atomism versus the continuum are deeply involved in modern research on digital and computational physics. This example underlines that modern physics, in the tradition of Newton’s Principia Mathematica Philosophiae Naturalis, is a further development of natural philosophy with the rigorous methods of mathematics, measuring, (...) and computing. We consider fundamental concepts of natural philosophy with mathematical and computational methods and ask for their ontological and epistemic status. The following article refers to the author’s book, “The Digital and the Real World. Computational Foundations of Mathematics, Science, Technology, and Philosophy.”. (shrink)

The enduring replication crisis in many scientific disciplines casts doubt on the ability of science to estimate effect sizes accurately, and in a wider sense, to self-correct its findings and to produce reliable knowledge. We investigate the merits of a particular countermeasure—replacing null hypothesis significance testing with Bayesian inference—in the context of the meta-analytic aggregation of effect sizes. In particular, we elaborate on the advantages of this Bayesian reform proposal under conditions of publication bias and other methodological imperfections that are (...) typical of experimental research in the behavioral sciences. Moving to Bayesian statistics would not solve the replication crisis single-handedly. However, the move would eliminate important sources of effect size overestimation for the conditions we study. (shrink)

Historical Justice and Memory highlights the global movement for historical justice—acknowledging and redressing historic wrongs—as one of the most significant moral and social developments of our times. Such historic wrongs include acts of genocide, slavery, systems of apartheid, the systematic persecution of presumed enemies of the state, colonialism, and the oppression of or discrimination against ethnic or religious minorities. The historical justice movement has inspired the spread of truth and reconciliation processes around the world and has pushed governments to make (...) reparations and apologies for past wrongs. It has changed the public understanding of justice and the role of memory. In this book, leading scholars in philosophy, history, political science, and semiotics offer new essays that discuss and assess these momentous global developments. They evaluate the strength and weaknesses of the movement, its accomplishments and failings, its philosophical assumptions and social preconditions, and its prospects for the future. (shrink)

In Part I of this paper, we identified and compared various schemes for trivalent truth conditions for indicative conditionals, most notably the proposals by de Finetti and Reichenbach on the one hand, and by Cooper and Cantwell on the other. Here we provide the proof theory for the resulting logics DF/TT and CC/TT, using tableau calculi and sequent calculi, and proving soundness and completeness results. Then we turn to the algebraic semantics, where both logics have substantive limitations: DF/TT allows for (...) algebraic completeness, but not for the construction of a canonical model, while CC/TT fails the construction of a Lindenbaum-Tarski algebra. With these results in mind, we draw up the balance and sketch future research projects. (shrink)

The enduring replication crisis in many scientific disciplines casts doubt on the ability of science to estimate effect sizes accurately, and in a wider sense, to self-correct its findings and to produce reliable knowledge. We investigate the merits of a particular countermeasure—replacing null hypothesis significance testing with Bayesian inference—in the context of the meta-analytic aggregation of effect sizes. In particular, we elaborate on the advantages of this Bayesian reform proposal under conditions of publication bias and other methodological imperfections that are (...) typical of experimental research in the behavioral sciences. Moving to Bayesian statistics would not solve the replication crisis single-handedly. However, the move would eliminate important sources of effect size overestimation for the conditions we study. (shrink)

This paper explores the scope and limits of rational consensus through mutual respect, with the primary focus on the best known formal model of consensus: the Lehrer–Wagner model. We consider various arguments against the rationality of the Lehrer–Wagner model as a model of consensus about factual matters. We conclude that models such as this face problems in achieving rational consensus on disagreements about unknown factual matters, but that they hold considerable promise as models of how to rationally resolve non-factual disagreements.

Die Wissenschaft hat - von der Wissenschaftstheorie des 20. Jahrhunderts gründlich untersucht - bestimmte Strukturen ihres Wissens, ihrer Methodik der Wissensgewinnung und Wissensabsicherung entwickelt, die sie von anderen Arten des Umgangs mit Wissen - z.B. der Alltagserfahrung - signifikant unterscheidet. Für die Technikwissenschaften haben solche wissenschaftstheoretischen Untersuchungen jedoch bisher kaum stattgefunden. Was etwa die analytische Wissenschaftstheorie für die Naturwissenschaften geleistet hat, steht daher für die Technikwissenschaften noch aus. Denn das technische Wissen unterscheidet sich vom wissenschaftlichen Wissen in seiner inneren Struktur. (...) Diese Struktur aufzuklären ist eine lohnende Aufgabe, weil deren Kenntnis hilft, besser mit Technik umzugehen. Die in diesem Band vorgelegten analytischen Studien zur Wissenschaftstheorie der Technikwissenschaften behandeln - ausgehend vom Problem der Formalisierung und der Wahrheitsfrage in der Philosophie - die Grundeinheit des technischen Wissens, die technologische Regel, und den Aufbau und Zusammenhang technologischer Theorien. Daraus ergeben sich Hinweise auf die innere, d.h. auch logische Struktur des technischen Wissens. (shrink)