The aim of this article is to provide a plausible conceptual model of a specific use of images described as substitution in recent art-historical literature. I bring to light the largely implicit shared commitments of the art historians’ discussion of substitution, each working as they do in a different idiom, and I draw consequences from these commitments for the concept of substitution by image—the major being the distinction between nonportraying substitution and substitution by portrayal. I then develop an argument that (...) substitution by image in the desired, nonportraying sense needs to be thought of in terms of a figurative representation of an image’s subject as a generic object, what I will call its figurative instantiation. (shrink)

Without doubt, there is a widespread usage of visualisations in science. However, what exactly the _epistemic status_ of these visual representations in science may be remains an open question. In the following, I will argue that at least some scientific visualisations are indispensible for our cognitive processes. My thesis will be that, with regard to the activity of _learning_, visual representations are of relevance in the sense of contributing to the aim of _scientific_ _understanding_. Taking into account that understanding can (...) be regarded as an epistemic desideratum in its own right, I will argue that, at least in some instances, no understanding can be achieved without the aid of visualisations. Consequently, they are of crucial importance in this process. Moreover, to support this thesis we will make use of some findings in educational psychology. (shrink)

Goodman and Elgin have recommended a reconception of philosophy. A central part of their recommendation is to replace knowledge by understanding. According to Elgin, some important internalist and externalist theories of knowledge favor a sort of undesirable cognitive minimalism. Against Elgin I try to show how the challenge of cognitive minimalism can be met. Goodman and Elgin claim that defeat and confusion are built into the concept of knowledge. They demand either its revision or its replacement or its supplement. I (...) show that these are three very different options. While agreeing with the view that there may be good reasons for some revisions and supplements, I strongly disagree with Elgin and Goodman's replacement thesis. (shrink)

It is uncontroversial that we sometimes have moral obligations to voice our disagreements, when, for example, the stakes are high and a wrong course of action will be pursued. But might we sometimes also have epistemic obligations to voice disagreements? In this paper, I will argue that we sometimes do. In other words, sometimes, to be behaving as we ought, qua epistemic agents, we must not only disagree with an interlocutor who has voiced some disagreed-with content but must also testify (...) to this disagreement. This is surprising given that norms on testimony are generally taken to be permissive, and epistemic obligations are usually taken to be negative. In this paper I will discuss some occasions in which epistemic obligations to testify may arise, and I will attempt to investigate the nature of these obligations. I'll briefly discuss the relationship between epistemic and moral norms. I'll offer an account of what it takes to discharge epistemic obligations to testify. Finally, I'll look at some accounts of epistemic obligation that might explain these obligations. (shrink)