A new reading of Plato's account of conventionalism about names in the Cratylus. It argues that Hermogenes' position, according to which a name is whatever anybody 'sets down' as one, does not have the counterintuitive consequences usually claimed. At the same time, Plato's treatment of conventionalism needs to be related to his treatment of formally similar positions in ethics and politics. Plato is committed to standards of objective natural correctness in all such areas, despite the problematic consequences which, as he (...) himself shows, arise in the case of language. (shrink)

A new reading of Plato's account of conventionalism about names in the Cratylus. It argues that Hermogenes' position, according to which a name is whatever anybody 'sets down' as one, does not have the counterintuitive consequences usually claimed. At the same time, Plato's treatment of conventionalism needs to be related to his treatment of formally similar positions in ethics and politics. Plato is committed to standards of objective natural correctness in all such areas, despite the problematic consequences which, as he (...) himself shows, arise in the case of language. (shrink)

The daring idea that convention - human decision - lies at the root both of necessary truths and much of empirical science reverberates through twentieth-century philosophy, constituting a revolution comparable to Kant's Copernican revolution. This is the first comprehensive study of Conventionalism. Drawing a distinction between two conventionalist theses, the under-determination of science by empirical fact, and the linguistic account of necessity, Yemima Ben-Menahem traces the evolution of both ideas to their origins in Poincare;'s geometric conventionalism. She argues that the (...) radical extrapolations of Poincare;'s ideas by later thinkers, including Wittgenstein, Quine, and Carnap, eventually led to the decline of conventionalism. This book provides a new perspective on twentieth-century philosophy. Many of the major themes of contemporary philosophy emerge in this book as arising from engagement with the challenge of conventionalism. (shrink)

Roughly speaking all economists can be divided into two groups--those who agree with Milton Friedman and those who do not. Both groups, however, espouse the view that science is a series of approximations to a demonstrated accord with reality. Methodological controversy in economics is now merely a Conventionalist argument over which comes first--simplicity or generality. Furthermore, this controversy in its current form is not compatible with one important new and up and coming economic (welfare) theory called "the theory of the (...) Second Best." In this paper I offer a Second Best meta-theory that says that (1) any compromise between simplicity and generality must yield a theory which is "third best" by these Conventionalist criteria; and (2) there exists a better way than a compromise. (shrink)

Historically, opponents of realism have argued that the world’s objects are constructed by our cognitive activities—or, less colorfully, that they exist and are as they are only relative to our ways of thinking and speaking. To this realists have stoutly replied that even if we had thought or spoken in ways different from our actual ones, the world would still have been populated by the same objects as it actually is, or at least by most of them. (Our thinking differently (...) could cause some differences in which objects exist, or in what some existing objects are like, but that is another matter.) Yet this reply has repeatedly failed to amount to a decisive objection. For opponents of realism have repeatedly argued, in one way or another, that we construct the world’s objects in just such a way as to render such a counterfactual true. We construct them so as to appear not to be our constructs. Just such a debate is currently underway concerning the properties that are essential to the world’s objects. It is widely agreed, with varying caveats1, that there are such properties—that by virtue of belonging to one or another natural kind, the world’s objects possess certain properties essentially, and have individual careers that last exactly as long as those essential properties are jointly present. But what underlies the status as essential of the properties that are thus essential to objects in the world? The realist answer treats essential status as mind-independent, and assigns it to the way the world works (Elder.. (shrink)

The paper is a review of Talal Debs and Michael Redhead's 2007 book, Objectivity, Invariance, and Convention, Harvard, Harvard University Press.

We are confident of many of the judgements we make as to what sorts of alterations the members of nature's kinds can survive, and what sorts of events mark the ends of their existences. But is our confidence based on empirical observation of nature's kinds and their members? Conventionalists deny that we can learn empirically which properties are essential to the members of nature's kinds. Judgements of sameness in kind between members, and of numerical sameness of a member across time, (...) merely project our conventions of individuation. Our confidence is warranted because apart from those conventions there are no phenomena of kind-sameness or of numerical sameness across time. There is just 'stuff' displaying properties. This paper argues that conventionalists can assign no properties to the 'stuff' beyond immediate phenomenal properties. Consequently they cannot explain how each of us comes to be able to wield 'our conventions'. (shrink)

Historically, opponents of realism have managed to slip beneath a key objection which realists raise against them. The opponents say that some element of the world is constructed by our cognitive practices; realists retort that the element would have existed unaltered, had our practices differed; the opponents sometimes agree, contending that we construct in just such a way as to render the counterfactual true. The contemporary instalment of this debate starts with conventionalism about modality, which holds that the borders of (...) the world's kinds and the careers of individuals in those kinds obtain only relative to our conventions of individuation. Realists object that the kinds and careers in nature would still have obtained, had our conventions been different, but conventionalists claim to be able to agree. I argue that this claim is false, and that conventionalism contradicts itself. (shrink)

The logical positivists adopted Poincare's doctrine of the conventionality of geometry and made it a key part of their philosophical interpretation of relativity theory. I argue, however, that the positivists deeply misunderstood Poincare's doctrine. For Poincare's own conception was based on the group-theoretical picture of geometry expressed in the Helmholtz-Lie solution of the space problem, and also on a hierarchical picture of the sciences according to which geometry must be presupposed be any properly physical theory. But both of this pictures (...) are entirely incompatible with the radically new conception of space and geometry articulated in the general theory of relativity. The logical positivists's attempt to combine Poincare's conventionalism with Einstein's new theory was therefore, in the end, simply incoherent. Underlying this problem, moreover, was a fundamental philosophical difference between Poincare's and the positivists concerning the status of synthetic a priori truths. (shrink)

W. V. Quine famously argues that though all knowledge is empirical, mathematics is entrenched relative to physics and the special sciences. Further, entrenchment accounts for the necessity of mathematics relative to these other disciplines. Michael Friedman challenges Quine’s view by appealing to historicism, the thesis that the nature of science is illuminated by taking into account its historical development. Friedman argues on historicist grounds that mathematical claims serve as principles constitutive of languages within which empirical claims in physics and the (...) special sciences can be formulated and tested, where these mathematical claims are themselves not empirical but conventional. For Friedman, their conventional, constitutive status accounts for the necessity of mathematics relative to these other disciplines. Here I evaluate Friedman’s challenge to Quine and Quine’s likely response. I then show that though we have reason to find Friedman’s challenge successful, his positive project requires further development before we can endorse it. (shrink)

This paper examines popular 'conventionalist' explanations of why philosophers need not back up their claims about how 'we' use our words with empirical studies of actual usage. It argues that such explanations are incompatible with a number of currently popular and plausible assumptions about language's 'social' character. Alternate explanations of the philosopher's purported entitlement to make a priori claims about 'our' usage are then suggested. While these alternate explanations would, unlike the conventionalist ones, be compatible with the more social picture (...) of language, they are each shown to face serious problems of their own. (shrink)

John Haugeland has recently attempted to provide a naturalistic account of intentionality that explains how we can (collectively) misidentify objects in the world in terms of the interplay of two types of 'recognitional' skill. Nevertheless, it is argued here that his inegalitarian conception of the two sorts of skill leaves him with a quasi-conventionalist account of our relation to the world which lacks the more robust sort of objectivity that a more holistic theory could provide.

Hans Reichenbach's so-called geometrical conventionalism is often taken as an example of a positivistic philosophy of science, based on a verificationist theory of meaning. By contrast, we shall argue that this view rests on a misinterpretation of Reichenbach's major work in this area, the Philosophy of Space and Time (1928). The conception of equivalent descriptions, which lies at the heart of Reichenbach's conventionalism, should be seen as an attempt to refute Poincaré's geometrical relativism. Based upon an examination of the reasons (...) Reichenbach gives for the cognitive equivalence of geometrical descriptions, the paper argues that his conventionalism is a specific form of scientific realism. At the same time we shall argue against those interpretations which lead to a trivialization of Reichenbach's conventionalism or deny it entirely. (shrink)

(No abstract is available for this citation).

I provide a compact reformulation of Carnap’s conditions of adequacy for the analytic and the synthetic component of a theory and show that, contrary to arguments by Winnie and Demopoulos, Carnap’s conditions of adequacy need not be supplemented by another condition. This has immediate implications for the analytic component of reduction sentences.

I reject the widely held view that Duhem's 1906 book La Théorie physique is a statement of instrumentalistic conventionalism, motivated by the scientific crisis at the end of the nineteenth century. By considering Duhem's historical context I show that his epistemological views were already formed before the crisis occured; that he consistently supported general thermodynamics against the new atomism; and that he rejected the epistemological views of the latter's philosophical supporters. In particular I show that Duhem rejected Poincaré's account of (...) scientific language, Le Roy's view that laws are definitions, and the conventionalist's use of simplicity as the criterion of theory choice. Duhem regarded most theory choices as decidable on empirical grounds, but made historical context the main determining factor in scientific change. (shrink)

Rudolf Carnap's 'Principle of Tolerance' was undoubtedly one of the most infl uential precepts in 20th Century philosophy. Introduced in The Logical Syntax of Language, Carnap's Principle suffered from ambiguities which aroused important philosophical questions from Moritz Schlick (in 1935) and Alberto Coffa (1991). Specifi cally, their questions arise from the application of the Principle to the matter of including extra-logical transformation rules (so-called 'physical rules' or 'P-rules') in the defi nition of a language, which Carnap regarded as an (...) important difference between his own conventionalist philosophy of logic and the 'absolutist' conception of Wittgenstein's Tractatus. Yet both Schlick and Coffa suggested that applying the Tolerance precept to this matter exceeds the limits of its legitimate deployment. Upon considering their objections, as well as the criticism of Wittgenstein which evoked them, it is argued that the philosophical signifi cance of the Principle of Tolerance requires its strict limitation to matters pertaining to the determination of meaning. (shrink)

Abstract In this paper the basic aim of the so?called ?strong programme? in the sociology of knowledge is examined. The ?strong programme? is considered (and rightly so) as an extreme version of the anti?realist view of science. While the problem of scientific realism has normally been dealt with from the point of view of the ?context of justification? of theories, the paper focuses on the issues raised by law?discovery. In this context Herbert Simon's views about the existence of a ?logic (...) of scientific discovery? are discussed and criticized. The main thesis of the paper is that if the structure of both discovery and prediction is properly understood, then the basic anti?realist claims become untenable. A fortiori, the ?strong programme? appears to be unable to explain some basic features of the structure of science. (shrink)

" Vivid . . . immense clarity . . . the product of a brilliant and extremely forceful intellect." — Journal of the Royal Naval Scientific Service "Still a sheer joy to read." — Mathematical Gazette "Should be read by any student, teacher or researcher in mathematics." — Mathematics Teacher The originator of algebraic topology and of the theory of analytic functions of several complex variables, Henri Poincare (1854–1912) excelled at explaining the complexities of scientific and mathematical ideas to lay (...) readers. Science and Method, written in 1908, has been appreciated by a wide audience of nonprofessionals and translated into many languages. It defines the basic methodology and psychology of scientific discovery, particularly in regard to mathematics and mathematical physics. Drawing on examples from many fields, it explains how scientists analyze and choose their working facts, and it explores the nature of experimentation, theory, and the mind. 1914 edition. Translated by Francis Maitland. (shrink)

Reichenbach's Philosophy of Space and Time (1928) avoids most of the logical positivist pitfalls it is generally held to exemplify, notably both conventionalism and verificationism. To see why, we must appreciate that Reichenbach's interest lies in how mathematical structures can be used to describe reality, not in how words like 'distance' acquire meaning. Examination of his proposed "coordinative definition" of congruence shows that Reichenbach advocates a reductionist analysis of the relations figuring in physical geometry (contrary to common readings that attribute (...) to him a holistic conventionalism), while embracing a thoroughly holistic understanding of empirical confirmation (contrary to rival operationalist readings). (shrink)

Salmon, following Reichenbach and others, maintained that distant simultaneity was conventional in a special relativistic world in a way in which this was not so in prerelativistic spacetime. This paper surveys and criticizes a number of proposals to unpack this claim. It goes on to argue that if the claim has validity, it rests upon differing facts about epistemic accessibility of temporal relations in the different spacetimes, and not directly upon any facts about differing causal structures in these worlds.

A suggestion is made as to the core of the allegation of Salmon and others that simultaneity is non-conventional in Newtonian spacetime but conventional in Minkowski spacetime.

The subject of this investigation is the role of conventions in the formulation of Thomas Reid's theory of the geometry of vision, which he calls the 'geometry of visibles'. In particular, we will examine the work of N. Daniels and R. Angell who have alleged that, respectively, Reid's 'geometry of visibles' and the geometry of the visual field are non-Euclidean. As will be demonstrated, however, the construction of any geometry of vision is subject to a choice of conventions regarding the (...) construction and assignment of its various properties, especially metric properties, and this fact undermines the claim for a unique non-Euclidean status for the geometry of vision. Finally, a suggestion is offered for trying to reconcile Reid's direct realist theory of perception with his geometry of visibles.While Thomas Reid is well-known as the leading exponent of the Scottish 'common-sense' school of philosophy, his role in the history of geometry has only recently been drawing the attention of the scholarly community. In particular, several influential works, by N. Daniels and R. B. Angell, have claimed Reid as the discoverer of non-Euclidean geometry; an achievement, moreover, that pre-dates the geometries of Lobachevsky, Bolyai, and Gauss by over a half century. Reid's alleged discovery appears within the context of his analysis of the geometry of the visual field, which he dubs the 'geometry of visibles'. In summarizing the importance of Reid's philosophy in this area, Daniels is led to conclude that 'there can remain little doubt that Reid intends the geometry of visibles to be an alternative to Euclidean geometry'; while Angell, similarly inspired by Reid, draws a much stronger inference: 'The geometry which precisely and naturally fits the actual configurations of the visual field is a non-Euclidean, two-dimensional, elliptical geometry. In substance, this thesis was advanced by Thomas Reid in 1764 ...' The significance of these findings has not gone unnoticed in mathematical and scientific circles, moreover, for Reid's name is beginning to appear more frequently in historical surveys of the development of geometry and the theories of space.Implicit in the recent work on Reid's 'geometry of visibles', or GOV, one can discern two closely related but distinct arguments: first, that Reid did in fact formulate a non-Euclidean geometry, and second, that the GOV is non-Euclidean. This essay will investigate mainly the latter claim, although a lengthy discussion will be accorded to the first. Overall, in contrast to the optimistic reports of a non-Euclidean GOV, it will be argued that there is a great deal of conceptual freedom in the construction of any geometry pertaining to the visual field. Rather than single out a non-Euclidean structure as the only geometry consistent with visual phenomena, an examination of Reid, Daniels, and Angell will reveal the crucial role of geometric 'conventions', especially of the metric sort, in the formulation of the GOV (where a 'metric' can be simply defined as a system for determining distances, the measures of angles, etc.). Consequently, while a non-Euclidean geometry is consistent with Reid's GOV, it is only one of many different geometrical structures that a GOV can possess. Angell's theory that the GOV can only be construed as non-Euclidean, is thus incorrect. After an exploration of Reid's theory and the alleged non-Euclidean nature of the GOV, in respectively, the focus will turn to the tacit role of conventionalism in Daniels' reconstruction of Reid's GOV argument, and in the contemporary treatment of a non-Euclidean visual geometry offered by Angell (). Finally, in the conclusion, a suggestion will be offered for a possible reconstruction of Reid's GOV that does not violate his avowed 'direct realist' theory of perception, since this epistemological thesis largely prompted his formulation of the GOV. (shrink)

I discuss two subjects in Samir Okasha’s excellent book, Evolution and the Levels of Selection. In consonance with Okasha’s critique of the conventionalist view of the units of selection problem, I argue that conventionalists have not attended to what realists mean by group, individual, and genic selection. In connection with Okasha’s discussion of the Price equation and contextual analysis, I discuss whether the existence of these two quantitative frameworks is a challenge to realism.

MANY WRITERS HAVE WISHED TO DISTINGUISH, WITH RESPECT TO CLAIMS ABOUT SPACE AND TIME, BETWEEN MATTERS OF FACT AND MATTERS OF CONVENTION--TO SAY, FOR EXAMPLE, THAT IT IS A MATTER OF FACT WHETHER TWO RODS AT THE SAME PLACE ARE CONGRUENT, BUT A MATTER OF CONVENTION WHETHER TWO RODS AT DIFFERENT PLACES ARE CONGRUENT. ANY ATTEMPT TO DETERMINE WHICH STATEMENTS ARE MATTERS OF CONVENTION WILL RELY ON SOME VERIFICATIONIST DOCTRINE. YET DIFFERENT VERIFICATIONIST DOCTRINES DIFFER IN PLAUSIBILITY AND YIELD DIFFERENT RESULTS. (...) THE ONLY SATISFACTORY WAY TO DETERMINE WHETHER A STATEMENT CONCERNS MATTER OF FACT, IS BY SPELLING OUT ITS CONSEQUENCES, NOT BY INVESTIGATING HOW IT CAN BE VERIFIED. (shrink)

As is well known, Carnap's conventionalism was a rejection to Kant's view ofmathematics and was fully developed in his Logische Syntax der Sprache.The purpose of this article is to step back to Der Logische Aufbau der Weltto show that the Logical Syntax of Language is an attempt to solve difficultiesfound in the earlier construction. I first clarify the notion of conventionalism, whichplays a central role in the application of mathematics to the reconstruction of empiricalknowledge. By not strictly distinguishing between the (...) intuitive notion and thetopological concept of dimension, Carnap is led to a construction which is highlyquestionable. To illustrate the constructive method developed in the Aufbauand some of its inherent difficulties, I consider the computational aspects of theconstruction of phenomenological space via the mathematical concept of dimension.Contrary to Carnap's conventionalism, a dual nature of mathematical statements isbrought into existence by his logical reconstruction. So, if Carnap wants to retainhis mathematics as devoid of content, he must make a clear-cut distinction betweenanalytic and synthetic statements. Thus the natural follow-up to the Aufbau isthe Logical Syntax of Language. (shrink)