I begin with an explication of "thought experiment". I then clarify the role that intuitions play in thought experiments by addressing two important issues: (1) the informativeness of thought experiments and (2) the legitimacy of the method of thought experiments in philosophy and the natural sciences. I defend a naturalistic account of intuitions that provides a plausible explanation of the informativeness of thought experiments, which, in turn, allows thought experiments to be reconstructed as arguments. I also specify criteria for distinguishing (...) bad "intuition pumps" from legitimate thought experiments. These criteria help us to avoid being seduced by the dangerous suggestive power of misleading intuitions. (shrink)

Conversational contextualism in epistemology is characterized by four main theses: 1. the indexicality of knowledge claims thesis; 2. the attributor contextualism thesis; 3. the conversational contextualism thesis, and 4. the main thesis of contextualism according to which a knowledge claim can be true in one context and false in another context in which more stringent standards for knowledge are operant. It is argued that these theses taken together generate problems for contextualism. In particular, it is shown that there is no (...) context in which the contextualist can truthfully claim to know her theory is true. Since these results were obtained only with principles the contextualist cannot give up—like the principle of epistemic closure and the principle that knowledge implies truth—it seems that contextualism is in need of a thoroughgoing revision if it is to become a successful epistemic theory. (shrink)

According to truthmaker maximalism, each truth has a truthmaker. Peter Milne has attempted to refute truthmaker maximalism on mere logical grounds via the construction of a self-referential truthmaker sentence M “saying” of itself that it doesn’t have a truthmaker. Milne argues that M turns out to be a true sentence without a truthmaker and thus provides a counterexample to truthmaker maximalism. In this paper, I show that Milne’s refutation of truthmaker maximalism does not succeed. In particular, I argue that the (...) notion of truthmaker meets two structural principles which, if added to a formal language of a theory, are already sufficient to produce a provable contradiction—a contradiction that gives rise to a socalled “Truthmaker paradox”. I also address the question of how to possibly resolve the Truthmaker paradox. I thereby show that the Truthmaker paradox, just as the strengthened Liar paradox, yields a “revenge problem” for paracomplete theories and might lead to triviality for Priest’s dialetheist account LP if the notion of truthmaker is defined as a certain semantic predicate within LP. But regardless of how one tries to cope with the Truthmaker paradox, this paradox is surely interesting in its own right. However, its significance is completely orthogonal to the question of whether truthmaker maximalism is a philosophically sound view. (shrink)

I begin with an explication of “thought experiment”. I then clarify the role that intuitions play in thought experiments by addressing two important issues: the informativeness of thought experiments and the legitimacy of the method of thought experiments in philosophy and the natural sciences. I defend a naturalistic account of intuitions that provides a plausible explanation of the informativeness of thought experiments, which, in turn, allows thought experiments to be reconstructed as arguments. I also specify criteria for distinguishing bad “intuition (...) pumps” from legitimate thought experiments. These criteria help us to avoid being seduced by the dangerous suggestive power of misleading intuitions. (shrink)

It is argued that neither contextualism nor relativism can provide a satisfying semantics of knowledge ascriptions. According to contextualism, the truth conditions of knowledge ascriptions of the form “S knows that p” vary with the epistemic standards operative in the contexts of utterance. These epistemic standards are determined, in particular, by the speaker’s stakes with regard to p or the consideration of error-possibilities. It is shown that the absolute concept of utterance truth together with a knowledge rule of assertion lead (...) to certain unassertable truths in contextualism and to counterintuitive results with regard to certain cross-context knowledge ascriptions. Although utterance truth is relativized to contexts of assessment in relativist accounts of knowledge, relativism still makes inadequate semantic predictions. In particular, relativism runs into problems in cases where the context of assessment is lower than the context of utterance. It is finally argued that invariantist accounts, according to which the truth conditions of knowledge ascriptions do neither vary with the context of utterance nor the context of assessment, but are determined by objective features given in the situation in which the knowledge claim is made, are better suited for modelling the semantics of knowledge ascriptions. Besides the fact that stakes or the consideration of error-possibilities can have an influence on the belief in a proposition, they have no further bearing on the truth conditions of knowledge ascriptions. (shrink)

Studies on the nature of quotation have become a topic of growing interest among linguists and philosophers of language. What is the function and logical status of quotations? How can an analysis of quotation help to develop a general theory of the semantics-pragmatics interface? This volume is a collection of original papers by leading researchers in the field on such issues and related linguistic and philosophical aspects of quotations.

Was ist Wissen? Wie gelangen wir zu Wissen? Warum ist Wissen eigentlich erstrebenswert? Ist Wissen überhaupt möglich? Ausgehend von diesen traditionellen philosophischen Fragen nach der Natur, den Quellen, dem Wert sowie den Möglichkeiten und Grenzen des menschlichen Wissens, untersucht die Autorin die zentralen Positionen und aktuellen Debatten gegenwärtiger Wissenstheorien. Dabei werden wichtige epistemische Paradoxien des Wissens, der Wissensskeptizismus und die systematischen Beziehungen zwischen Wissen und Rationalität sowie zwischen Wissen und Zufall analysiert. Behandelt werden zudem Konzeptionen im Rahmen neuerer erkenntnistheoretischer Strömungen (...) (z. B. Reliabilismus, Kontextualismus, Tugenderkenntnistheorie und Soziale Erkenntnistheorie). Die Analyse zeigt, dass in einer philosophisch befriedigenden Wissenstheorie sowohl die sokratische Suche nach einer endgültigen Definition von Wissen als auch das cartesische Ideal von Wissen als Form einer absoluten Gewissheit aufgegeben werden muss. In ihrem eigenen Ansatz argumentiert Brendel für einen kontextabhängigen Wissensbegriff, der eine wahre und epistemisch nicht zufällige Überzeugung zum Ausdruck bringt. (shrink)

A satisfactory theory of knowledge in which the shortcomings of a pure externalist account are avoided and in which the Gettier problem is solved should consist in a combination of externalist and internalist components. The internalist component should guarantee that the epistemic subject has cognitive access to the justifying grounds of her belief. And the externalist component should guarantee that the justification of her belief does not depend on any false statement. Keith Lehrer's coherence theory of knowledge as undefeated justification (...) is an example of such an internalist-externalist analysis of knowledge. But nevertheless, Lehrer's account leads to unintended results. Therefore, it is argued that a satisfactory coherence theory of knowledge must also be based on a gradual notion of systematic coherence. (shrink)

Leben wir in einer simulierten Scheinrealität statt in einer Welt tatsächlich existierender Dinge? Diese These der so genannten Skeptiker lässt sich zwar nicht grundsätzlich widerlegen, erscheint aber ziemlich unwahrscheinlich.Im Kultfilm »Matrix« der Wachowski-Brüder von 1999 arbeitet Thomas A. Anderson tagsüber als Programmierer in einer Softwarefirma. Nachts schlüpft er in die Rolle eines berüchtigten Computerhackers, der unter dem Pseudonym Neo sein Gehalt aufbessert. In Wirklichkeit ist jedoch sein ganzes Leben, wie Neo im Lauf der Geschichte schmerzlich erfahren muss, bloß Teil einer (...) gigantischen computergenerierten Scheinwelt, der »Matrix«. Wohnung, Arbeitsplatz, Freunde, Stadt, Restaurants – sie alle existieren nicht, sondern sind nur Konstrukte einer Softwaresimulation. Man schreibt nicht mehr das Jahr 1999, sondern 2199. Bereits Anfang des 21. Jahrhunderts übernahmen, so der Filmplot, intelligente Maschinen die Macht auf der Erde. Sie halten Menschen in riesigen Anlagen zwecks Energiegewinnung. Deren Körper schwimmen in Kapseln, die mit Nährflüssigkeit gefüllt sind. Über Schläuche und Drähte sind die Menschen an Computer angeschlossen, die ihnen eine perfekte Scheinrealität vorgaukeln. (shrink)

In this paper we survey some main arguments for and against epistemological contextualism. We distinguish and discuss various kinds of contextualism, such as attributer contextualism (the most influential version of which is semantic, conversational, or radical contextualism); indexicalism; proto-contextualism; Wittgensteinian contextualism; subject, inferential, or issue contextualism; epistemic contextualism; and virtue contextualism. Starting with a sketch of Dretske's Relevant Alternatives Theory and Nozick's Tracking Account of Knowledge, we reconstruct the history of various forms of contextualism and the ways contextualists try to (...) handle some notorious epistemological quandaries, especially skepticism and the lottery paradox. Then we outline the most important problems that contextualist theories face, and give overviews of their criticisms and defenses as developed in this issue. (shrink)

The paper focuses on the problem of how to account for the phenomena of disagreement and retraction in disputes over skepticism in a contextualist framework. I will argue that nonindexical versions of contextualism are better suited to account for those phenomena than DeRose’s indexical form of contextualism. Furthermore, I will argue against DeRose’s “single scoreboard” semantics and against his solution of ruling that in a dispute over skepticism, both parties to the conversation are expressing something truth-valueless. At the end, I (...) will briefly address the question of whether DeRose’s contextualism combined with his double-safety account and his rule of sensitivity provide an epistemically satisfying answer to the skeptical challenge. It will be argued that by merely explaining the attractiveness of skeptical arguments, DeRose’s contextualism seems to lack the resources to explain some important epistemic issues, as, for example, the question of what knowledge is and when a true belief turns into knowledge. (shrink)

The paper discusses the strengths and weaknesses of arguments of proper self-reference, arguments of self-application and arguments of iterative application. A formalization of the underlying logical structure of these arguments helps to identify the implicit premises on which these arguments rest. If the premises are plausible, the conclusions reached by these arguments must be taken seriously. In particular, all the types of argument discussed, when sound, show that certain theories that purport to be universally applicable are not tenable. The argumentative (...) power of such arguments then depends on how devastating it is for the theories in question to give up their claim of universal applicability. (shrink)

Goldman's project of a veritistic social epistemology is based on a descriptive-success account of truth and a weak notion of knowledge as mere true belief. It is argued that, contrary to Goldman's opinion, pragmatism and social constructivism are not necessarily ruled out by the descriptive-success account of truth. Furthermore, it is shown that it appears to be questionable whether Goldman has succeeded to show that there is a weak notion of knowledge. But even if such a weak notion of knowledge (...) can be defended, this notion can result in a complete separation of knowledge from epistemic value, which does not seem to be in accordance with Goldman's concept of societal knowledge. (shrink)

As a result of his studies in metalogicEssler became convincedthat an absolute fixed totality of alltruths and a final metalanguage doesnot exist. Taking this result into account,it is shown that the usualabsolute concept of omniscience isuntenable. From this it can be concludedthat definitions of knowledge whichappeal to such a concept of omnisciencelead to serious problems.

C.Z. Elgins Argumente zur Unbrauchbarkeit des Wissensbegriffes für epistemologische Untersuchungen und die damit begründete Ersetzung des Wissensdurch den Verstehensbegriff werden anhand einer Analyse der Funktion von Begriffsexplikationen zur Bildung wahrer gerechtfertigter Überzeugungen zurückgewiesen. Die Verwendung grober Begriffskategorien, die mit einer Reduktion der Irrtumsmöglichkeit und somit einer leichten Bildung vieler gerechtfertigter Überzeugungen einhergeht, erweist sich nur vordergründig als epistemischer Vorteil für die Laien, da die so gewonnenen Uberzeugungen kognitiv weniger gehaltvoll sind, Experten aber neben den feineren gewöhnlich auch über die groben (...) Begriffskategorien verfügen, und selbst bei eingestandener Irrtumsmöglichkeit und dem Verzicht auf definitive Überzeugungen der Art „Dieses x ist F" erheblich mehr und Gehaltvolleres wissen als Laien, da auch,,x ist definitiv kein F" oder,,x ist höchstwahrscheinlich F" Wissen ausdrücken. (shrink)

C.Z. Elgins Argumente zur Unbrauchbarkeit des Wissensbegriffes für epistemologische Untersuchungen und die damit begründete Ersetzung des Wissensdurch den Verstehensbegriff werden anhand einer Analyse der Funktion von Begriffsexplikationen zur Bildung wahrer gerechtfertigter Überzeugungen zurückgewiesen. Die Verwendung grober Begriffskategorien, die mit einer Reduktion der Irrtumsmöglichkeit und somit einer leichten Bildung vieler gerechtfertigter Überzeugungen einhergeht, erweist sich nur vordergründig als epistemischer Vorteil für die Laien, da die so gewonnenen Uberzeugungen kognitiv weniger gehaltvoll sind, Experten aber neben den feineren gewöhnlich auch über die groben (...) Begriffskategorien verfügen, und selbst bei eingestandener Irrtumsmöglichkeit und dem Verzicht auf definitive Überzeugungen der Art „Dieses x ist F" erheblich mehr und Gehaltvolleres wissen als Laien, da auch,,x ist definitiv kein F" oder,,x ist höchstwahrscheinlich F" Wissen ausdrücken. (shrink)

Contextualism has become one of the leading paradigms in contemporary epistemology. According to this view, there is no context-independent standard of knowledge, and as a result, all knowledge ascriptions are context-sensitive. Contextualists contend that their account of this analysis allows us to resolve some major epistemological problems such as skeptical paradoxes and the lottery paradox, and that it helps us explain various other linguistic data about knowledge ascriptions. The apparent ease with which contextualism seems to solve numerous epistemological quandaries has (...) inspired the burgeoning interest in it. This comprehensive anthology collects twenty original essays and critical commentaries on different aspects of contextualism, written by leading philosophers on the topic. The editors’ introduction sketches the historical development of the contextualist movement and provides a survey and analysis of its arguments and major positions. (shrink)

Since universal language systems are confronted with serious paradoxical consequences, a semantic approach is developed in whichpartial worlds form the ontological basis. This approach shares withsituation semantics the basic idea that statements always refer to certain partial worlds, and it agrees with the extensional and model-theoretic character ofpossible worlds semantics. Within the framework of the partial worlds conception a satisfactory solution to theLiar paradox can be formulated. In particular, one advantage of this approach over those theories that are based on (...) the totality of possible worlds semantics can be found in the fact that the so-called Strengthened Liar problem is avoided. (shrink)

C.Z. Elgins Argumente zur Unbrauchbarkeit des Wissensbegriffes für epistemologische Untersuchungen und die damit begründete Ersetzung des Wissensdurch den Verstehensbegriff werden anhand einer Analyse der Funktion von Begriffsexplikationen zur Bildung wahrer gerechtfertigter Überzeugungen zurückgewiesen. Die Verwendung grober Begriffskategorien, die mit einer Reduktion der Irrtumsmöglichkeit und somit einer leichten Bildung vieler gerechtfertigter Überzeugungen einhergeht, erweist sich nur vordergründig als epistemischer Vorteil für die Laien, da die so gewonnenen Uberzeugungen kognitiv weniger gehaltvoll sind, Experten aber neben den feineren gewöhnlich auch über die groben (...) Begriffskategorien verfügen, und selbst bei eingestandener Irrtumsmöglichkeit und dem Verzicht auf definitive Überzeugungen der Art „Dieses x ist F" erheblich mehr und Gehaltvolleres wissen als Laien, da auch,,x ist definitiv kein F" oder,,x ist höchstwahrscheinlich F" Wissen ausdrücken. (shrink)

This chapter gives an overview of important philosophical accounts of knowledge. It starts with Plato’s idea of knowledge as a certain true judgement with an account which stands as the origin of the famous tripartite analysis of knowledge as justified true belief in modern epistemology. Descartes’ concept of knowledge as clear and distinct perception is introduced and shown that it leads to a radical and universal skepticism regarding empirical knowledge of the external world. It is argued that twentieth-century philosophy of (...) cognition and philosophy of science has been more open to accepting concepts of knowledge in which epistemic justification of beliefs is fallible. Furthermore, recent trends in philosophical theories of knowledge, such as naturalistic approaches in epistemology as well as virtue epistemology and social accounts of knowledge, are described and connections to the global turn in cultural sciences are drawn. (shrink)