Conventionalism and Necessity Bin Liu
Total Page:16
File Type:pdf, Size:1020Kb
Conventionalism and Necessity Bin Liu A thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophy Faculty of Arts and Social Sciences University of Sydney 2017 This is to certify that to the best of my knowledge, the content of this thesis is my own work. This thesis has not been submitted for any degree or other purposes. I certify that the intellectual content of this thesis is the product of my own work and that all the assistance received in preparing this thesis and sources have been acknowledged. Signature Abstract I argue that conventionalism is a promising doctrine by defending it against the following four major objections. (1) Quine’s objection to truth by convention. (2) Quine’s objection regarding the definition of analytic, and regarding the distinction between the analytic and synthetic. (3) The objection from the necessary a posteriori. (4) The contingency problem. Some of the objections apply to analytic propositions, whereas some of them apply to necessary a posteriori propositions. I take Ayer’s doctrine as a typical version of Traditional Conventionalism. I develop my Revised Conventionalism about analytic propositions based on Ayer’s doctrine. The main revisions I argue for include that analytic propositions are a model constructed from our use of language, and that the necessity of analytic propositions can be given up. I take Sidelle’s doctrine as a typical version of Neo-Conventionalism. I develop my Revised Conventionalism about necessary a posteriori propositions based on Sidelle’s view. The main revision I argue for is that purportedly unrestricted necessary a posteriori propositions are only restrictedly necessary. I argue that my Revised Conventionalism can withstand the above four major objections. Conventionalism opens up a new line of thought for resolving philosophical problems. That is, conventionalism proposes explanations by virtue of our use of language, rather than by virtue of objective reality or by the nature of our thought. Given my defence of conventionalism, it follows that we can use the conventionalist line of thought to resolve a wide range of philosophical problems. Acknowledgements I would like to thank Professor Kristie Miller for her great support and helpful comments throughout the writing of this dissertation. I would like to thank Professor Nicholas Smith for his support on related themes and for his helpful instruction in choosing the topic. I would also like to thank Professor David Braddon-Mitchell, Professor David Macarthur, Professor Mark Colyvan and Dr. Michael Duncan for their interest in my work and constructive suggestions. I would also like to thank my colleagues James Norton, Br. Reginald Chua, Naoyuki Kajimoto, Andrew Latham, Shang Lu, Jane Loo, who also provided me with many useful ideas that have made the thesis better. Jared Warren helped to clarify the content of his views via emails Special thanks for Dr. Eran Asoulin, philosopher and linguist, for his help with proofreading the thesis. Table of Contents Introduction ........................................................................................................................................... 1 Chapter 1: Traditional Conventionalism and Objections to It ....................................... 18 1.1. Introduction ........................................................................................................................................18 1.1.1. Empiricism .......................................................................................................................................18 1.1.2. Explanation by virtue of language ..........................................................................................19 1.1.3. An advantage of the explanation by virtue of language .................................................21 1.1.4. Stipulation ........................................................................................................................................22 1.2. Ayer’s Traditional Conventionalism ..........................................................................................26 1.2.1. Ayer’s doctrine ................................................................................................................................26 1.2.2. Objection: Analytic propositions are empirical synthetic propositions .................30 1.2.3. Objection: The contingency problem ....................................................................................32 1.2.4. Response: Analytic propositions are rules ..........................................................................32 1.2.5. Problems with Ayer’s solution .................................................................................................34 1.3. My Revised Conventionalism .......................................................................................................36 1.3.1. Analytic propositions as a model ............................................................................................36 1.3.2. Analytic propositions and synthetic propositions ...........................................................38 1.3.3. The independence of experience ............................................................................................40 1.3.4. Analytic propositions and our use of words .......................................................................41 1.3.5. Analytic propositions and conventions ................................................................................42 1.3.6. The necessity of analytic propositions .................................................................................43 1.3.7. The apriority of analytic propositions ..................................................................................49 1.3.8. Analytic propositions as rules ..................................................................................................50 Chapter 2: Quine’s Objections to Traditional Conventionalism ................................... 53 2.1. Introduction ........................................................................................................................................53 2.2. The objection to truth by convention .......................................................................................53 2.2.1. Quine’s objection ...........................................................................................................................54 2.2.2. Explicit conventionalism ............................................................................................................57 2.2.3. Implicit conventionalism ............................................................................................................58 2.2.4. Explanatory idleness ....................................................................................................................61 2.2.5. Response to the problem of explanatory idleness ...........................................................62 2.3. The distinction between the analytic and the synthetic ...................................................64 2.3.1. Quine’s objection to the definition of “analytic” ...............................................................65 2.3.2. Grice & Strawson’s on Quine .....................................................................................................66 2.3.3. Quine’s on the analytic and synthetic ...................................................................................68 2.3.4. Sidelle’s on Quine ..........................................................................................................................70 2.3.5. Quine’s objection and Sidelle’s response .............................................................................72 2.3.6. The linguistic and the empirical ..............................................................................................74 2.3.6.1. What is the difference between the linguistic and the empirical? .........................74 2.3.6.2. Quine on the linguistic and the empirical ........................................................................76 2.3.6.3. A difference in degree, not kind ...........................................................................................78 2.3.6.4. The difference between connection and description ..................................................85 2.3.6.5. From analytic vs synthetic to linguistic vs empirical ..................................................89 Chapter 3: The Necessary A Posteriori .................................................................................... 92 3.1. Introduction ........................................................................................................................................92 3.2. Putnam’s logical necessity .............................................................................................................92 3.2.1. The Twin Earth thought experiment .....................................................................................92 3.2.2. Sociality and indexicality ............................................................................................................95 3.2.3. Putnam’s understanding of meaning ....................................................................................96 3.3. Kripke’s metaphysical possibility ...............................................................................................97 3.3.1. Possible worlds are stipulated .................................................................................................98