Michael Bradie

Wesley Salmon defends an ontic realism that distinguishes explanatory from descriptive knowledge. Explanatory knowledge makes appeals to (unobservable) theoretical acausal mechanisms. Salmon presents an argument designed both to legitimize attributing truth values to theoretical claims and to justify treating theoretical claims as descriptions. The argument succeeds but only at the price of calling the distinction between explanation and description into question. Even if Salmon's attempts to distinguish causal mechanisms from other mechanisms are successful, the assumed centrality of the appeal to such mechanisms in providing scientific explanations is left open by Salmon's account.

The fundamental dialectic of Science as a Process is the interaction between two narrative levels. At one level, the book is a historical narrative of one aspect of one ongoing problem in systematics. At the second level, Hull presents a theoretical model of the scientific process which draws heavily on invoked similarities between biological and scientific change. I first situate the model as one alternative among several which loosely fit under the umbrella of 'evolutionary epistemologies.' Second, I explore one of the implications of Hull's model, namely, that insofar as scientific theories are [parts of] "conceptual lineages," they are "conceptual individuals.".

Harold Kincaid’s Individualism and the Unity of Science is a subtle and nuanced analysis of the interlocking themes and issues surrounding the struggle between ‘holists’ and ‘individualists’ in the social sciences. Two major claims, one substantial and one methodological, emerge from this analysis. The substantial claim is a defense of a ‘non-reductive unity’ of the sciences. The methodological claim is that the disputes between reductionists and pluralists or between individualists and holists are empirical and not conceptual disputes. In this paper, I focus on what I take to be Kincaid’s central theses.

There are two interrelated but distinct programs which go by the name evolutionary epistemology. One attempts to account for the characteristics of cognitive mechanisms in animals and humans by a straightforward extension of the biological theory of evolution to those aspects or traits of animals which are the biological substrates of cognitive activity, e.g., their brains, sensory systems, motor systems, etc. (EEM program). The other program attempts to account for the evaluation of ideas, scientific theories and culture in general by using models and metaphors drawn from evolutionary biology (EET program). The paper begins by distinguishing the two programs and discussing the relationship between them. The next section addresses the metaphorical and analogical relationship between evolutionary epistemology and evolutionary biology. Section IV treats the question of the locus of the epistemological problem in the light of an evolutionary analysis. The key questions here involve the relationship between evolutionary epistemology and traditional epistemology and the legitimacy of evolutionary epistemology as epistemology. Section V examines the underlying ontological presuppositions and implications of evolutionary epistemology. Finally, section VI, which is merely the sketch of a problem, addresses the parallel between evolutionary epistemology and evolutionary ethics.