Olaf Müller’s book develops a new case for underdetermination, and, as he is focusing on theories of a ‘limited domain’, this assumes the containability of the theories. First, the paper argues that Müller’s theory of darkness is fundamentally Newtonian, but for Newton’s optical theory the type of theoretical structure Müller adopts is problematic. Second, the paper discusses seventeenth-century challenges to Newton, changes in the proof-structure of Newton’s optical theory, and how these affect Müller’s reconstruction. Müller’s book provides empirically equivalent theories, (...) yet the historical theories were not empirically equivalent, and the same experiments were used to extract different bodies of evidence to rebut the opponent. Third, Goethe’s multi-layered critique of Newton’s experimental proof is investigated, including his developmental account of prismatic colours, the role of experimental series in rejecting Newton’s observations, and his incorporation of the ‘limited domain’ of prismatic colours in a broader framework. Two key elements of Goethe’s method, polarity and strengthening are discussed in contrast to Müller, who only utilises polarity in his account. Finally Neurath’s attempts to come to grips with the optical controversies and the prism-experiments with ‘blurred edges’ are recalled. Müller also discusses in detail some of these experiments and heavily draws on Quine. Neurath developed Duhem’s and Poincaré’s conventionalist insights and had good reasons to be pessimistic about theory-containment. Their differences provide some additions to the history of the Duhem–Quine thesis. (shrink)

In this paper I reconstruct the central concept of the young Lukács’s and Mannheim’s sociology of knowledge, as they present it in their writings in the early decades of the twentieth century. I argue that this concept, namely Weltanschauung, is used to refer to some conceptually unstructured totality of feelings, which they take to be a condition of possibility of intellectual production, and this understanding is contrasted to an alternative construal of the term that presents it as logically structured, quasi-theoretical (...) background knowledge. This concept has Kantian reminiscences: it is a condition of possibility of intellectual production in general. The young Mannheim and Lukács rely on ‘Weltanschauung’ so understood as a phenomenon mediating between the facts of society and individual intellectual production and reception: it is seen as being conditioned by sociological facts and therefore as a historical and sociological category through which, and therefore indirectly, society enters into intellectual production. (shrink)