This paper has a twofold purpose. First, it aims at highlighting one difference in how counterfactuals work in general history, on the one hand, and in history of the natural sciences, on the other hand. As we show, both in general history and in history of science good counterfactual narratives need to be plausible, where plausibility is construed as appropriate continuity of both the antecedent and the consequent of the counterfactual with what we know about the world. However, in general (...) history it is often possible to imagine a consequent dramatically different from the actual historical development, and yet plausible; in history of science, due to plausibility concerns, imagining a consequent far removed from the results of actual science seems more complicated. The second aim of the paper is to assess whether and to what degree counterfactual histories of science can advance the cause of the so-called “contingency thesis,” namely, the claim that history of science might have followed a path leading to alternative, non-equivalent theories, as successful as the ones that we currently embrace. We distinguish various versions of the contingency thesis and argue that counterfactual histories of science support weak versions of the thesis. (shrink)

Over the last three decades, non-adaptationism has developed as an alternative model to more traditional, adaptationist approaches within Evolutionary Epistemology. Despite its great explanatory strength, non-adaptationist EE finds a potential Achilles heel in its adherence to conceptual relativism, namely the idea that empirical content can be relative to many different and radically incommensurable conceptual schemes. In his seminal essay “On the Very Idea of a Conceptual Scheme”, Donald Davidson did in fact prove the unintelligibility of an analogous form of conceptual (...) relativism. Although Davidson’s original intent was to debunk a conceptual relativist position which he discerned in the works of authors such as Kuhn, Quine, and Whorf, given the apparent similarity between the conceptual relativism supported by non-adaptationist EE and the one criticised by Davidson, one might well wonder if Davidson’s objections would have the same debunking effect if applied to non-adaptationist EE. In this paper I propose to answer this question by directing Davidson’s critiques of conceptual relativism to non-adaptationist EE and by testing to what extent the latter is de facto undermined by Davidson’s attacks. I demonstrate that Davidson’s arguments do not detract from the reliability of non-adaptationist perspectives and, to some extent, they appear to substantiate the non-adaptationist evolutionary epistemological cause anew. (shrink)