Edmund Gettier is Professor Emeritus at the University of Massachusetts, Amherst. This short piece, published in 1963, seemed to many decisively to refute an otherwise attractive analysis of knowledge. It stimulated a renewed effort, still ongoing, to clarify exactly what knowledge comprises.

Mental imagery has often been taken to be equivalent to “sensory imagination”, the perception‐like type of imagination at play when, for example, one visually imagines a flower when none is there, or auditorily imagines a music passage while wearing earplugs. I contend that the equation of mental imagery with sensory imagination stems from a confusion between two senses of mental imagery. In the first sense, mental imagery is used to refer to a psychological attitude, which is perception‐like in nature. In (...) the second sense, mental imagery refers to a mental content, which can be grasped via different attitudes. I will show that failure to acknowledge the distinction between these senses of mental imagery has muddled philosophical discussion. This distinction brings much needed clarity to debates where sensory imagination and mental imagery are invoked, shedding light on issues such as the nature of imagistic mental states, and the representational powers and limits of mental imagery. I will conclude by sketching a general attitudinal account of imagination that does justice to both senses of mental imagery, outlining a promising framework for understanding imagination. (shrink)

How are we to understand the phenomenology of imagining? Attempts to answer this question often invoke descriptors concerning the “vivacity” or “vividness” of our imaginative states. Not only are particular imaginings often phenomenologically compared and contrasted with other imaginings on grounds of how vivid they are, but such imaginings are also often compared and contrasted with perceptions and memories on similar grounds. Yet however natural it may be to use “vividness” and cognate terms in discussions of imagination, it does not (...) take much reflection to see that these terms are ill understood. In this paper, I review both some relevant empirical literature as well as the philosophical literature attempt to get a handle on what it could mean, in an imaginative context, to talk of vividness. As I suggest, this notion ultimately proves to be so problematic as to be philosophically untenable. (shrink)

Look at a red apple. Now close your eyes and visualize this apple. Your perceptual state and your imagery of the apple are very similar in some respects. They are also different in some respects. The aim of this paper is to address three questions about the relation between perception and imagination: -/- (a) How similar are perception and imagination and what explains this similarity? (b) How different are perception and imagination and what explains this difference? (c) How do perception (...) and imagination interact? (shrink)

Though philosophers such as Wittgenstein and Sartre have dismissed imagination as epistemically irrelevant, this chapter argues that there are numerous cases in which imagining can help to justify our contingent beliefs about the world. The argument proceeds by the consideration of case studies involving two particularly gifted imaginers, Nikola Tesla and Temple Grandin. Importantly, the lessons that we learn from these case studies are applicable to cases involving less gifted imaginers as well. Though not all imaginings will have justificatory power, (...) the chapter shows how the sorts of cases in which imagining plays an epistemic role can be easily distinguished from the sorts of cases in which it does not. (shrink)

The terms "imagination'' and "imaginative'' can be readily applied to a profusion of attitudes, experiences, activities, and further phenomena. The heterogeneity of the things to which they're applied prompts the thoughts that the terms are polysemous, and that there is no single, coherent, fruitful conception of imagination to be had. Nonetheless, much recent work on imagination ascribes implicitly to a univocal way of thinking about imaginative phenomena: the imitation theory, according to which imaginative experiences imitate other experiences. This approach is (...) infelicitous. It issues in unhelpful descriptions of imaginative activities, experiences, and attitudes, and frustrates theorizing about imagination's applications and intensional characteristics. A better way of thinking about imagination is the lens theory, according to which the imagination is a set of ways to focus, refine, clarify or concentrate the matter of other experiences. This approach offers better characterizations of imaginative phenomena, and promises brighter theoretical illumination of them. (shrink)

Some of us have suggested that what fiction makers do is offer us things to imagine, that this is what is distinctive of fiction and what distinguishes it from narrative-based but assertive activities such as journalism or history. Some of us hold, further, that it is the maker's intention which confers fictional status. Many, I think, feel the intuitive appeal of this idea at the same time as they sense looming problems for any proposal about fiction's nature based straightforwardly on (...) the identification of fiction with the to-be-imagined. I formulate a very weak version of the proposal which is not vulnerable to some objections recently presented. My formulation is in terms of supervenience. But while this version is weak, it is also quite precise, and its precision brings into view certain other problems which have not so far been attended to. To the extent that these problems are serious, the prospects for an intentional theory of fiction look, I am sorry to say, poor; the version susceptible to the objections is weak, and anything weaker still but not so susceptible could hardly be thought of as a theory of fiction, though it might supplement such a theory. (shrink)

Remembering a cat sleeping (specifically, recollecting the way the cat looked), perceiving (specifically, seeing) a cat sleeping, and imagining (specifically, visualizing) a cat sleeping are of course importantly different. Nonetheless, from the first-person perspective they are palpably alike. The paper addresses two questions: Q1. What are these similarities (and differences)? Q2. How does one tell that one is recalling (and so not perceiving or imagining)?

Typically, the imagination in thought experiments has been taken to consist in mental images; we visualize the state of affairs described. A recent alternative from Fiora Salis and Roman Frigg main...