New Essays on Tarski and Philosophy contains newly commissioned essays on the philosophical aspects of the work of Polish logician, mathematician and philosopher Alfred Tarski. Topics covered include Tarski's relations to other Polish figures, e.g. Lesniewski and Kotarbinski, the Vienna Circle, and other figures such as Hilbert and others who studied the foundations of mathematics and logic at the time. The volume also includes essays interpreting and criticizing Tarski's views.

It is argued that a certain form of the view that the semantic paradoxes show that natural languages are "inconsistent" provides the best response to the semantic paradoxes. After extended discussions of the views of Kirk Ludwig and Matti Eklund, it is argued that in its strongest formulation the view maintains that understanding a natural language is sharing cognition of an inconsistent semantic theory for that language with other speakers. A number of aspects of this approach are discussed and a (...) few objections are entertained. (shrink)

The essays can be seen as addressing Tarski's seminal treatment of four basic questions about logical consequence. (1) How are we to understand truth, one of ...

This study looks to the work of Tarski's mentors Stanislaw Lesniewski and Tadeusz Kotarbinski, and reconsiders all of the major issues in Tarski scholarship in light of the conception of Intuitionistic Formalism developed: semantics, truth, paradox, logical consequence.

This is a discussion of different ways of working out the idea that the semantic paradoxes show that natural languages are somehow “inconsistent”. I take the workable form of the idea to be that there are expressions such that a necessary condition of understanding them is that one be inclined to accept inconsistent claims (an conception also suggested by Matti Eklund). I then distinguish “simple” from “complex” forms of such views. On a simple theory, such expressions are meaningless, while on (...) a complex theory they are not. I argue that complex theories are incompatible with truth conditional semantics and that simple theories are only coherent when the inconsistent claims are metalingusitic attributions of meaning. I close with a discussion of the version of the simple metalinguistic theory I have defended in “Understanding the Liar” and other papers. (shrink)

(Beall ed. The Revenge of the Liar, forthcoming from Oxford University Press) > The main presentation of my approach to the semantic paradoxes. I take them to show that understanding a natural language is sharing a cognitive relation to a logically false semantic theory with other speakers.

In recent articles Fodor and Lepore have argued that not only do considerations of learnability dictate that meaning must be compositional in the wellknown sense that the meanings of all sentences are determined by the meanings of a finite number of primitive expressions and a finite number of operations on them, but also that meaning must be 'reverse compositional' as well, in the sense that the meanings of the primitive expressions of which a complex expression is composed must be determined (...) by the meaning of that complex expression plus the manner of its composition. I argue against the requirement of reverse compositionality and against the claim that learnability requires it. I consider some objections and close the paper by arguing against the related claim that concepts are reverse compositional. (shrink)

Controversy has arisen of late over the claim that deflationism about truth requires that we explain meaning in terms of something other than truth-conditions. This controversy, it is argued, is due to unclarity as to whether the basic deflationary claim that a sentence and a sentence that attributes truth to it are equivalent in meaning is intended to involve the truth- predicate of the object language for which we develop an account of meaning, or is intended to involve the truth- (...) predicate of the metalanguage in which we develop an account of meaning. The former view is compatible with the truth-conditional theory of meaning for the object language, the latter is incompatible with it. However, the former view is also trivially true; hence we should endorse the claim that any form of deflationism worth being interested in is incompatible with understanding meaning truth-conditionally. (shrink)

Partly due to the influence of Tarski's work, it is commonly assumed that any good theory of truth implies biconditionals of the sort mentioned in Convention T: instances of the T-Schema "s is true in L if and only if p" where the sentence substituted for "p" is equivalent in meaning to s. I argue that we must take care to distinguish the claim that implying such instances is sufficient for adequacy in an account of truth from the claim that (...) doing so is necessary. The claim that doing so is sufficient is a common component of deflationary theories of truth, while the claim that it is necessary, though often assumed, must be denied by proponents of rival inflationary theories of truth. I discuss the clarification of the debate between these views of truth that results from distinguishing the necessity and the sufficiency claims, and examine the prospects for its resolution. (shrink)

(Pacific Philosophical Quarterly 2007) > Another look at Bar-On, Horisk and Lycan’s criticism of deflationism. I claim that their argument turns on a simple confusion about definitions and thereby fails to establish that deflationism somehow requires meaning to be explained in terms of truth conditions.

Tarski’s Convention T is often taken to claim that it is both sufficient and necessary for adequacy in a definition of truth that it imply instances of the T-schema where the embedded sentence translates the mentioned sentence. However, arguments against the necessity claim have recently appeared, and, furthermore, the necessity claim is actually not required for the indefinability results for which Tarski is justly famous; indeed, Tarski’s own presentation of the results in the later Undecidable Theories makes no mention of (...) an assumption to the effect that the definition of truth implies the biconditionals. This raises a question: was Tarski in fact committed to the necessity claim in the important papers of the 1930s and 40s? I argue that he was not. The discussion of this apparently esoteric interpretive issue in fact gets to the heart of many important questions about truth, and in the final sections of the paper I discuss the importance of the T-biconditionals in the theory of meaning and the relation of deflationary and inflationary theories of truth to the semantic paradoxes. (shrink)

This is a discussion of different ways of working out the idea that the semantic paradoxes show that natural languages are somehow “inconsistent”. I take the workable form of the idea to be that there are expressions such that a necessary condition of understanding them is that one be inclined to accept inconsistent claims (an conception also suggested by Matti Eklund). I then distinguish “simple” from “complex” forms of such views. On a simple theory, such expressions are meaningless, while on (...) a complex theory they are not. I argue that complex theories are incompatible with truth conditional semantics and that simple theories are only coherent when the inconsistent claims are metalingusitic attributions of meaning. I close with a discussion of the version of the simple metalinguistic theory I have defended in “Understanding the Liar” and other papers. (shrink)

A central component of ordinary thought about language is that things like English, Japanese and so on exist and that expressions of these languages mean things in them. A familiar philosophical take on this is that communication between speakers is something that happens in such languages and that happens because expressions have meanings in them: one communicates by means of English sentences because these sentences mean something in English. Opposed to this sort of philosophical common sense are two closely related (...) lines of thought. The first, commonly associated with Chomsky (e.g. 1986) and with Weinrich’s famous quote that “a language is a dialect with an army and a navy” is that natural languages are too poorly individuated to do the explanatory work the “commonsense” view requires of them, and are certainly too poorly individuated for serious study of language, or of its role in communication and behavior. For serious purposes, something better defined is required. This first thought leads directly into the second, on which any notion of a language suited for serious study should also bear a closer relationship to the attitudes and abilities of the individual speaker then a nebulous construct such as English could. If whatever meaning an uttered sentence has is determined by relatively “local” facts about the speaker, her intentions and beliefs, and the context of the utterance, language promises to be more closely tied to the speaker, and, one might think, better individuated for it. A move to treating the speaker’s idiolect (or even the idiolect at a time relative to conversational partner) as basic for the study of language is thus motivated both by both individuative and explanatory demands on the notion of a language. On this view, commonly associated in one way with Grice (e.g. 1989) and in another with Davidson (e.g. 2005), but shared by many others, shared languages are simply irrelevant to the determination of meaning, ordinary and philosophical prejudice to the contrary notwithstanding. I find the argument that shared language is irrelevant to the determination of meaning most persuasive in the following form.. (shrink)

It can seem a truism that to understand a language is to know what its expressions mean.

This dissertation defends the truth-conditional theory of meaning and the inflationary theory of truth it requires by explaining how truth-conditions could play an explanatory role in the account of the proper use of a language while being nevertheless metaphysically "lightweight" properties of sentences instituted by the way these sentences are used by the speakers of a language. Following the common division of approaches to truth into deflationary and inflationary, the dissertation begins in Chapter One with a discussion of currently advocated (...) deflationary theories. A general characterization of deflationism is developed that focuses on the deflationist's explanation of why certain attributions of truth-condition to the sentences of a language are assertible. This basic, meaning-theoretic deflationary commitment is distinguished from the metaphysically deflationary idea that truth is somehow not "robust" in the way that traditional inflationary theories take it to be. Chapter Two then argues that meaning-theoretic deflationism is best characterized by a less-noticed commitment to the claim that it is sufficient for adequacy in a theory of truth that it imply the attributions of truth-conditions discussed in Chapter One. In Chapter Three the relation of these basic deflationary commitments to the also common deflationary claim that meanings attributed with locutions like the English "means that", meanings that, in Hartry Field's phrase, "encapsulate truth-conditions" is considered, and it is argued that this latter view is actually not compatible with deflationism. ;Chapter Four examines the most prominent sorts of inflationary theory and finds them wanting. Chapter Five then discusses in a general way how a better inflationary theory could be developed; the central ideas are that truth-conditions play an explanatory role in the account of certain embedded uses of sentences, and that truth-conditions should be understood as instituted for sentences by the way that speakers use them. In Chapter Six the relevant sort of use is explained. The result is a view that is meaning-theoretically inflationary, in that truth-conditions play an explanatory role in the account of meaning, but metaphysically deflationary. (shrink)

I defend the “settist” view that set theory can be done consistently without any form of distinction between sets and “classes” (by whatever name), if we think clearly about belief and the expression of belief—and this, furthermore, entirely within classical logic. Standard arguments against settism in classical logic are seen to fail because they assume, falsely, that expressing commitment to a set theory is something that must be done in a meaningful language, the semantics of which requires, on pain of (...) Russellian paradox, a more powerful set theory. I explore the consequences of this response to the standard argument against “classical logic settism” for our notion of belief, and argue that what is revealed is that representationalist theories of belief cannot be right as long as it is possible to believe that every set is self-identical. (shrink)

Attempts to argue that the disquotational theory of truth is somehow self‐refuting have appeared largely unchallenged in the literature for some time now. Focusing on presentations by Anil Gupta and Crispin Wright, I contend that such arguments only undermine a view that nobody endorses. This done, I explain why it is fruitless to focus, as these arguments do, on deflationary accounts of the expressive function of the truth‐predicate. I then suggest a strategy for arguing against disquotationalism and other forms of (...) deflationism that focuses rather on the explanatory role of truth in accounts of meaning, in particular on the way that the theories of meaning compatible with deflationism handle embedded uses of sentences. (shrink)

This chapter contains sections titled: References.

A short discussion of whether or not an error theorist of understanding should construe understanding in terms of belief. This is a comment on a discussion between Dean Pettit and Steven Gross.

Review of Douglas Patterson. Alfred Tarski: Philosophy of Language and Logic.

Douglas Patterson argues that the best way to respond to the semantic paradoxes that arise in natural language is to take natural language semantics to be (explosively) inconsistent. According to Patterson, to understand a natural language is to share with others cognition of a false semantic theory. Patterson’s main argument runs as follows. English is expressively rich. So, the first sentence occurring in this review could be.

Media argumentation is a powerful force in our lives. From political speeches to television commercials to war propaganda, it can effectively mobilize political action, influence the public, and market products. This book presents a new and systematic way of thinking about the influence of mass media in our lives, showing the intersection of media sources with argumentation theory, informal logic, computational theory, and theories of persuasion. Using a variety of case studies that represent arguments that typically occur in the mass (...) media, Douglas Walton demonstrates how tools recently developed in argumentation theory can be usefully applied to the identification, analysis, and evaluation of media arguments. (shrink)

Fundamentals of Critical Argumentation presents the basic tools for the identification, analysis, and evaluation of common arguments for beginners. The book teaches by using examples of arguments in dialogues, both in the text itself and in the exercises. Examples of controversial legal, political, and ethical arguments are analyzed. Illustrating the most common kinds of arguments, the book also explains how to evaluate each kind by critical questioning. Douglas Walton shows how arguments can be reasonable under the right dialogue conditions (...) by using critical questions to evaluate them. The book teaches by example, both in the text itself and in exercises, but it is based on methods that have been developed through the author's thirty years of research in argumentation studies. (shrink)

A "slippery slope argument" is a type of argument in which a first step is taken and a series of inextricable consequences follow, ultimately leading to a disastrous outcome. Many textbooks on informal logic and critical thinking treat the slippery slope argument as a fallacy. Walton argues that used correctly in some cases, they can be a reasonable type of argument to shift a burden of proof in a critical discussion, while in other cases they are used incorrectly. Walton identifies (...) and analyzes four types of slippery slope argument. Walton presents guidelines that show how each type of slippery slope argument can be used correctly or incorrectly, using over fifty case studies of argumentation on controversial issues. These include abortion, medical research on human embryos, euthanasia, the decriminalization of marijuana, pornography, and censorship, and banning of American flag burning. (shrink)

Second edition of the introductory guidebook to the basic principles of constructing sound arguments and criticising bad ones. Non-technical in approach, it is based on 186 examples, which Douglas Walton, a leading authority in the field of informal logic, discusses and evaluates in clear, illustrative detail. Walton explains how errors, fallacies, and other key failures of argument occur. He shows how correct uses of argument are based on sound strategies for reasoned persuasion and critical responses. This edition takes into (...) account many developments in the field of argumentation study that have occurred since 1989, many created by the author. Drawing on these developments, Walton includes and analyzes 36 new topical examples and also brings in work on argumentation schemes. Ideally suited for use in courses in informal logic and introduction to philosophy, this book will also be valuable to students of pragmatics, rhetoric, and speech communication. (shrink)

Vol. presents a method for critically evaluating relevance in arguments based on case studies & a new relevance theory incorporating techniques of argumentation theory, logic & artificiaI intelligence. For scholars/students in argumentation & rhetoric.

Argumentation, which can be abstractly defined as the interaction of different arguments for and against some conclusion, is an important skill to learn for everyday life, law, science, politics and business. The best way to learn it is to try it out on real instances of arguments found in everyday conversational exchanges and legal argumentation. The introductory chapter of this book gives a clear general idea of what the methods of argumentation are and how they work as tools that can (...) be used to analyze arguments. Each subsequent chapter then applies these methods to a leading problem of argumentation. Today the field of computing has embraced argumentation as a paradigm for research in artificial intelligence and multi-agent systems. Another purpose of this book is to present and refine tools and techniques from computing as components of the methods that can be handily used by scholars in other fields. (shrink)

Recent work in artificial intelligence has increasingly turned to argumentation as a rich, interdisciplinary area of research that can provide new methods related to evidence and reasoning in the area of law. Douglas Walton provides an introduction to basic concepts, tools and methods in argumentation theory and artificial intelligence as applied to the analysis and evaluation of witness testimony. He shows how witness testimony is by its nature inherently fallible and sometimes subject to disastrous failures. At the same time (...) such testimony can provide evidence that is not only necessary but inherently reasonable for logically guiding legal experts to accept or reject a claim. Walton shows how to overcome the traditional disdain for witness testimony as a type of evidence shown by logical positivists, and the views of trial sceptics who doubt that trial rules deal with witness testimony in a way that yields a rational decision-making process. (shrink)

In this volume, Douglas Yoder uses the tools of modern and postmodern philosophy and biblical criticism to elucidate the epistemology of the Tanakh, the collection of writings that comprise the Hebrew Bible. Despite the conceptual sophistication of the Tanakh, its epistemology has been overlooked in both religious and secular hermeneutics. The concept of revelation, the genre of apocalypse, and critiques of ideology and theory are all found within or derive from epistemic texts of the Tanakh. Yoder examines how philosophers (...) such as Spinoza, Hume, and Kant interacted with such matters. He also explores how the motifs of writing, reading, interpretation, image, and animals, topics that figure prominently in the work of Derrida, Foucault, and Nietzsche, appear also in the Tanakh. An understanding of Tanakh epistemology, he concludes, can lead to new appraisals of religious and secular life throughout the modern world. (shrink)