Someone is “verballed” in the Anglo-Australian idiom if they have attributed to them statements they did not actually make and indeed have explicitly denied. We will examine the evidence that Kuhn and Feyerabend were verballed in this sense by their critics and that the role of the idea of incommensurability in their argumentation has been systematically misunderstood and -represented. In particular, we will see that neither Kuhn nor Feyerabend, despite what their critics often say about them, held that incommensurability of (...) theories implies the rational incomparability of theories. This is especially clear in the case of Feyerabend, whose argument is NOT that theories in a scientific tradition are on occasion incommensurable, but, rather, that, when the relations of theories in a tradition are represented in a particular way, they may on occasion be incommensurable according to that representation and hence incomparable if that representation is taken as providing the mechanisms of comparison. And the point of this claim is not to establish something about science, but, rather, to establish something about the representations of science which yield this result (i.e. that two theories might be incommensurable). Feyerabend in other words invokes incommensurability (according to the standards of a particular representation) as a reductio of that mode of representation. And this argument in fact depends precisely on the comparability of theories which are, according to the representation, incommensurable. Feyerabend’s argument is about the ways in which we should understand progress in science and he is concerned, in particular, to establish that a historically informed approach is superior to an approach which, if applicable, is applicable only to what he calls “abstract traditions”. Kuhn’s work, especially in the Postscript—1969, provides complementary materials, especially in relation to a collectivised and non-“algorithmic” account of theory choice across formally incommensurable paradigms. (shrink)

Operationalism and theoretical entities. The thesis of the“theory ladenness” of observation leads to an antinomy. In order to solve this antinomy a technical operationalism is sketched, according to which theories should in principle not contain anything that cannot be reduced to technical procedures. This implies the rejection of Quine's underdeterminacy thesis and of many views about the theoretical-observational distinction, e.g. neopositivistic views, van Fraassen's view, Sneed-Stegmüller's view. Then I argue for the following theses: 1. All scientific concepts are theory laden (...) in the sense that they allow us to anticipate possible experiences, but they have to be in principle fully observable, i.e. integrally convertible into operational-technical applications. 2. The observation/theory distinction can be maintained as a historical one: what is observable depends on the instruments that are available at any stage of the development of science. 3.In principle theoretical entities are empirically real in Hacking's sense. However, some aspects of Hacking's realism are to be criticized. Theoretical entities are to be resolved into the totality of the interrelated properties accessible to us by means of theoretical points of view embodied in scientific instruments. (shrink)

Robert Martin, in his review of myLaws and Other Worlds, has grasped the thrust of much of the argument. I would like to respond to three specific points that he makes, and to add a couple of more general comments that will bring out some other aspects of the structure of the argument that he misses, to try to show why I think the sort of enterprise the book attempts is worthwhile, more important than Martin's own pragmatic tendencies will perhaps (...) allow. (shrink)

The paper explores the relativistic implications of the thesis of incommensurability. A semantic form of incommensurability due to semantic variation between theories is distinguished from a methodological form due to variation in methodological standards between theories. Two responses to the thesis of semantic incommensurability are dealt with: the first challenges the idea of untranslatability to which semantic incommensurability gives rise; the second holds that relations of referential continuity eliminate semantic incommensurability. It is then argued that methodological incommensurability poses little risk (...) to the rationality or objectivity of science. For rational theory choice need neither be dictated by an algorithm nor governed by a binding set of rules. The upshot of the discussion is deflationary. There is little prospect for a relativistic conception of science based on inflated claims about the incommensurability of scientific theories. (shrink)

According to the Incommensurability Thesis (IT) superseding scientific theories (paradigms) are incommensurable. Unlike many authors we do not discuss whether there is a relationship of this kind. We take for granted that this may be the case, and see the problem in the endeavour to establish the domain of validity of the IT. The notion incommensurability (Ic) is derivative from the concepts of scientific paradigm (P) and scientific revolution (R). There are several concepts of P, as well as various conceptions (...) of R. The Ic concept also has more than one meaning. The validity of the IT is restricted to a subset of P, R, and Ic. From the viewpoint of P this may be the case with (a) substantially different competing general conceptions not reformulated with a view to make them comparable, as well as with (b) scientific communities dogmatically committed to such conceptions. From the viewpoint of R this takes place when we have to do with big revolutions, i.e. superseding conceptions with prevailing discontinuity. Lastly, from the point of view of Ic proper: when it is meant a weak Ic, i.e. a particular incomparability (incompatibility) between the conceptions in question. (shrink)

This article offers a critical review of various ontological-relativist arguments, mostly deriving from the work of W. V. Quine and Thomas K hn. I maintain that these arguments are (1) internally contradictory, (2) incapable of accounting for our knowledge of the growth of scientific knowledge, and (3) shown up as fallacious from the standpoint of a causal-realist approach to issues of truth, meaning, and interpretation. Moreover, they have often been viewed as lending support to such programmes as the 'strong' sociology (...) of knowledge and the turn towards wholesale cultural-relativist doctrines, whether of the Wittgensteinian ('language-games') or Heideggerian (depth-hermeneutic) varieties. Thus Richard Rorty recommends that we should henceforth drop all that old-fashioned talk of 'truth', 'knowledge', or 'reality', since whatever warrants those descriptions from time to time is just the product of some currently favoured language-game or range of elective metaphors. Such ideas have little in common with Quine's general outlook of robust physicalism, nor again - though the case is less clear - with Kuhn's reconsidered approach to these issues as set forth in his 1969 Postscript to The Structure of Scientific Revolutions . However, both thinkers have left themselves open to misconstrual by adopting a sceptical-relativist fallback position in response to the well-known problems with logical empiricism. This essay therefore reviews those problems with reference to alternative, more adequate accounts of what is involved in the process of scientific discovery and theory-change. (shrink)

Incommensurable theories are said to be both incompatible and incomparable. This is paradoxical, because, being incompatible, these theories must have the same subject-matter, yet incomparability implies that their subject-matter is different. This paper's proposed resolution of the paradox makes use of the distinction between internal subject-matter and external subject-matter for languages (frameworks) as outlined by W. Sellars. Incommensurability arises when two languages share the same external subject-matter but differ in internal subject-matter. When they share the same external subject-matter, they can (...) be inconsistent (hence incompatible), and yet incomparable (because they are about distinct internal subject-matter). A substantial part of the paper is devoted to the technical development of the notion of inconsistency as a relationship between languages in contrast to the traditional notion of inconsistency between statements. (shrink)

This article explores whether theory-ladenness makes empirical testing an inse cure foundation for objectivity. Specifically, this article uses path diagrams as visual heuristics to assist in (1) developing a parsimonious representation of the traditional empiricist view of empirical testing, (2) showing how the "New Image" view ostensibly threatens the objectivity of science, (3) proposing a unified, realist theory of empirical testing, (4) developing a representation of the unified theory, (5) exploring several potential threats to objectivity, (6) discussing the proposed theory's (...) implications for social science, and (7) adumbrating three foundational premises for scientific realism. (shrink)

Incommensurability constitutes the focal point of Kuhn’s departure from the prevailing traditions in Philosophy of Science. The paper traces the mathematical origin of the concept of “incommensurability” and philosophical environment that constrained the introduction of the idea in the literature. It then discusses the stages through which the concept of “incommensurability” evolved in Kuhn’s thought. The final account of “incommensurability,” viz., Kinds Theory of Incommensurability or Taxonomic Incommensurability, is also expounded, and some associated philosophical problems are discussed. We analyze two (...) case studies, provide textual and historical evidence, and cite the work of scholars supporting the conceptual continuity across the revolutionary divide in both the case studies. Kuhn acknowledges the rigidity of his earlier position and softens his stand on incommensurability in his last formulation of the thesis, justifying the title of the paper that Kuhn’s thesis lost its bite. At the end of the paper, we discuss some of the philosophical problems arising out of it and make certain critical remarks on the final account. (shrink)

First published in 2002. Routledge is an imprint of Taylor & Francis, an informa company.