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Introduction to the Broadly Classical Options

Hartry Field

in Saving Truth From Paradox

Published in print:
2008
Published Online:
May 2008
ISBN:
9780199230747
eISBN:
9780191710933
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199230747.003.0007
Subject:
Philosophy, Logic/Philosophy of Mathematics

This chapter is a short introduction to the ways of dealing with the Liar paradox within classical logic. It distinguishes classical gap theories, classical glut theories, and weakly classical ... More


Vagueness and Second‐Level Indeterminacy

Matti Eklund

in Cuts and Clouds: Vagueness, its Nature, & its Logic

Published in print:
2010
Published Online:
May 2010
ISBN:
9780199570386
eISBN:
9780191722134
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199570386.003.0004
Subject:
Philosophy, Logic/Philosophy of Mathematics, Metaphysics/Epistemology

Many theorists of vagueness take vagueness to be bound up with indeterminacy in a way that conflicts with classical logic and bivalence. Others, epistemicists like Timothy Williamson, hold that the ... More


Vagueness as Semantic

Max Kölbel

in Cuts and Clouds: Vagueness, its Nature, & its Logic

Published in print:
2010
Published Online:
May 2010
ISBN:
9780199570386
eISBN:
9780191722134
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199570386.003.0018
Subject:
Philosophy, Logic/Philosophy of Mathematics, Metaphysics/Epistemology

This chapter argues that vagueness, understood as a semantic phenomenon, can be accommodated within standard semantics by assimilating it to contingency in standard modal semantics and suitably ... More


Supervaluationism, Indirect Speech Reports, and Demonstratives

Rosanna Keefe

in Cuts and Clouds: Vagueness, its Nature, & its Logic

Published in print:
2010
Published Online:
May 2010
ISBN:
9780199570386
eISBN:
9780191722134
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199570386.003.0021
Subject:
Philosophy, Logic/Philosophy of Mathematics, Metaphysics/Epistemology

Can supervaluationism successfully handle indirect speech reports? This chapter considers and rejects Schiffer's claim that they cannot. One alleged problem with indirect speech reports is that the ... More


Scope Confusions and Unsatisfiable Disjuncts: Two Problems for Supervaluationism

Delia Graff Fara

in Cuts and Clouds: Vagueness, its Nature, & its Logic

Published in print:
2010
Published Online:
May 2010
ISBN:
9780199570386
eISBN:
9780191722134
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199570386.003.0022
Subject:
Philosophy, Logic/Philosophy of Mathematics, Metaphysics/Epistemology

This chapter considers two problems for supervaluationist accounts of vagueness. First is that the best (canonical-supervaluationist) explanation of our inclination to accept Sorites premises ... More


The Prospects of a Paraconsistent Response to Vagueness

Dominic Hyde

in Cuts and Clouds: Vagueness, its Nature, & its Logic

Published in print:
2010
Published Online:
May 2010
ISBN:
9780199570386
eISBN:
9780191722134
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199570386.003.0023
Subject:
Philosophy, Logic/Philosophy of Mathematics, Metaphysics/Epistemology

Paraconsistent responses to vagueness are often thought to represent a revision of logical theory that is too radical to be defensible. The paracomplete logic of supervaluationism, SpV, is not only ... More


A Second Interlude on Vagueness

Hartry Field

in Saving Truth From Paradox

Published in print:
2008
Published Online:
May 2008
ISBN:
9780199230747
eISBN:
9780191710933
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199230747.003.0010
Subject:
Philosophy, Logic/Philosophy of Mathematics

This chapter discusses the attempt to make sense of the notion of a question having no determinate answer within a classical-logic framework. It focuses in part on supervaluationism, especially the ... More


The Space of Possible Theories of Vagueness

Nicholas J. J. Smith

in Vagueness and Degrees of Truth

Published in print:
2008
Published Online:
January 2009
ISBN:
9780199233007
eISBN:
9780191716430
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199233007.003.0003
Subject:
Philosophy, Metaphysics/Epistemology, Logic/Philosophy of Mathematics

This chapter presents the main existing theories of vagueness, as well as some possible theories which have not yet found advocates. Each theory is presented not necessarily as it was first presented ... More


Accommodating Vagueness

Nicholas J. J. Smith

in Vagueness and Degrees of Truth

Published in print:
2008
Published Online:
January 2009
ISBN:
9780199233007
eISBN:
9780191716430
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199233007.003.0005
Subject:
Philosophy, Metaphysics/Epistemology, Logic/Philosophy of Mathematics

This chapter shows that only those theories of vagueness that countenance degrees of truth can allow for the existence of predicates that satisfy the Closeness definition. More precisely, it argues ... More


If it’s clear, then it’s clear that it’s clear, or is it? Higher-order vagueness and the S4 axiom ⋆

Susanne Bobzien

in Episteme, etc.: Essays in Honour of Jonathan Barnes

Published in print:
2011
Published Online:
May 2012
ISBN:
9780199696482
eISBN:
9780191738036
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199696482.003.0010
Subject:
Philosophy, Ancient Philosophy, Logic/Philosophy of Mathematics

This paper challenges some widespread assumptions about the role of the modal axiom S4 in theories of vagueness. In the context of vagueness, S4 usually appears as the principle ‘If it’s clear ... More


Vagueness and the Mind of God 1

John Hawthorne

in Metaphysical Essays

Published in print:
2006
Published Online:
September 2010
ISBN:
9780199291236
eISBN:
9780191710612
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199291236.003.0008
Subject:
Philosophy, Metaphysics/Epistemology

How ought we to conceive of an omniscient mind in light of the phenomenon of vagueness? Working within the framework of one of the more promising approaches to vagueness — supervaluationism — this ... More


The Real Truth about the Unreal Future *

Rachael Briggs and Graeme A. Forbes

in Oxford Studies in Metaphysics volume 7

Published in print:
2012
Published Online:
January 2013
ISBN:
9780199659081
eISBN:
9780191745201
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199659081.003.0009
Subject:
Philosophy, Metaphysics/Epistemology

Growing-Block theorists hold that past and present things are real, while future things do not yet exist. This generates a puzzle: how can Growing-Block theorists explain the fact that some sentences ... More


Being Metaphysically Unsettled: Barnes and Williams on Metaphysical Indeterminacy and Vagueness

Matti Eklund

in Oxford Studies in Metaphysics: volume 6

Published in print:
2011
Published Online:
May 2011
ISBN:
9780199603039
eISBN:
9780191725418
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199603039.003.0004
Subject:
Philosophy, Metaphysics/Epistemology, General

This chapter discusses the defence of metaphysical indeterminacy by Elizabeth Barnes and Robert Williams and discusses a classical and bivalent theory of such indeterminacy. Even if metaphysical ... More


The MBT View

Ofra Magidor

in Category Mistakes

Published in print:
2013
Published Online:
September 2013
ISBN:
9780199572977
eISBN:
9780191758942
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199572977.003.0004
Subject:
Philosophy, Philosophy of Language, Metaphysics/Epistemology

The chapter focuses on a second semantic approach to category mistakes: the MBT view, according to which category mistakes are meaningful but truth-valueless. First, a general argument is presented ... More


Quandary and Intuitionism: Crispin Wright on Vagueness

Stephen Schiffer

in Logic, Language, and Mathematics: Themes from the Philosophy of Crispin Wright

Published in print:
2020
Published Online:
August 2020
ISBN:
9780199278343
eISBN:
9780191881442
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780199278343.003.0007
Subject:
Philosophy, Logic/Philosophy of Mathematics

This chapter offers a sustained commentary on Crispin Wright’s paper “On Being in a Quandary: Relativism, Vagueness, Logic Revisionism.” It begins by giving a brief introduction to the issues ... More


Indeterminacy

Alastair Wilson

in The Nature of Contingency: Quantum Physics as Modal Realism

Published in print:
2020
Published Online:
March 2020
ISBN:
9780198846215
eISBN:
9780191881374
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198846215.003.0006
Subject:
Philosophy, Philosophy of Science

In Everettian quantum mechanics, the universal quantum state is fundamental, non-contingent, and wholly determinate. By contrast, the parallel worlds of diverging EQM, and the contingency constituted ... More


Why Frege’s Apparently Absurd View Is not Absurd at All

Joan Weiner

in Taking Frege at his Word

Published in print:
2020
Published Online:
December 2020
ISBN:
9780198865476
eISBN:
9780191897832
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198865476.003.0007
Subject:
Philosophy, Philosophy of Language

This chapter is largely an examination of the significance one of Frege’s views has for contemporary thought. The view, which was labeled the “apparently absurd view” in Chapter 6, is that (1) it is ... More


Prefaces, Sorites and Guides to Reasoning

Rosanna Keefe

in Conditionals, Paradox, and Probability: Themes from the Philosophy of Dorothy Edgington

Published in print:
2021
Published Online:
January 2021
ISBN:
9780198712732
eISBN:
9780191781070
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198712732.003.0013
Subject:
Philosophy, Logic/Philosophy of Mathematics, Philosophy of Language

Is there an interesting relation between the Preface paradox and the Sorites paradox that might be used to illuminate either or both of those paradoxes and the phenomena of rationality and vagueness ... More


Indeterminacy

Thomas Sattig

in The Double Lives of Objects: An Essay in the Metaphysics of the Ordinary World

Published in print:
2015
Published Online:
March 2015
ISBN:
9780199683017
eISBN:
9780191798221
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199683017.003.0007
Subject:
Philosophy, Metaphysics/Epistemology

The main question of the chapter is whether de re indeterminacy claims about the mereological, spatial, and temporal boundaries of ordinary objects might be true—whether ordinary objects might be ... More


The Many

Daniel Z. Korman

in Objects: Nothing out of the Ordinary

Published in print:
2015
Published Online:
January 2016
ISBN:
9780198732532
eISBN:
9780191796760
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198732532.003.0012
Subject:
Philosophy, Metaphysics/Epistemology

The problem of the many purports to show that, whenever there is an ordinary object of some kind, there must be countless objects of that kind right where it is. This chapter examines a variety of ... More


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