Touching God in his Image

The essay defends praying with images (icons) against those who claim this type of prayer is objectionable. The hermeneutical defence consists of three arguments. (a) First I observe that people relate to ordinary photos in ways that cannot be explained in terms of the image's sign‐value (or similitude) alone. (b) Second, I develop an account of praying with images as a form of symbolic practice. (c) Finally, in order to bolster my account, I compare icons with a particular class of symbolic objects, viz. relics. The general idea I put forward is that icons have to be understood as expressions of the reality they represent, and not simply as accurate or inaccurate visual representations of that reality. Icons are not created by human hands; instead, the hand of the painter is the instrumental cause of God's self‐expression, via the painter, on the canvas.     

Roles for Values in Scientific Activities

My aim in this paper is to rebut objections that have been made of the account of the various roles for values in scientific activities that I have developed, initially in my book Is Science Value Free?, in response to criticizing the proposal that science is value free. Specifically I respond to objections that my account does not recognize the significance of basic science, and that my defense of the ideal of impartiality cannot be sustained.     

Dreams: Fifty Years and Counting

I have been following my dreams since I was a child. Jung says that a single dream may give the dreamer a lot of information; however, a series of dreams over time will show where the dreamer needs to do additional work, where and how the dreamer's life may be headed, and how the dreamer is dealing with this knowledge that comes from a realm of wisdom that is both numinous and mysterious. In my life, spirit has become a profound partner by pointing me in directions that were not conscious to me. I have had a wonderful opportunity to work with a fellow dream worker for the past ten years. We use active imagination and amplification until the meaning of the dream becomes clearer. Often our dreams produce parallel images, feelings, and actions, which to my eye confirms the deeper psychic connection we all have with one another. I have used images to capture the impact of the dreams on my psyche, and poetry to confirm and augment the deeper level of wisdom that unfolds in our dreams. Dream interpretation can only encourage dreamers to allow themselves to become comfortable with working with their dream material, but does not necessarily show them the final answers.     

Visual Power in Action: Digital Images and the Shaping of Medical Practices

The increasing presence of images in medicine is mostly understood as a visualization of medicine. In this view, physicians and researchers are strongly guided by the visual power of images. Ethnographic fieldwork and interviews with physicians and scientists working in radiology departments and magnetic resonance imaging units however, show that visual power is not always effective. Depending on a situation, physicians and scientists are guided more strongly either by the persuasiveness of an image's visual qualities or its scientific and sociomaterial qualities. Actors trust in images and perceive them as attractive and objective in certain situations, whereas in others they classify images as manipulated representations that are untrustworthy. It is either the visual power or the status of images as scientific and sociomaterial facts that shapes physicians' and researchers' actions. Depending on whether an image is used, for example, to make a diagnosis, to validate a research finding, to communicate with a patient, to prevent litigation, or to improve one's position in the professional field, it is either the visual power or the scientific and sociomaterial characteristics of an image that are more effective in shaping medical practices. Fieldwork and interviews with physicians and scientists show in which situations visual power is relevant (or not) for medical practices.     

Explaining dubious assertions

David Sosa argues that the knowledge account of assertion is unsatisfactory, because it cannot explain the oddness of what he calls dubious assertions. One such dubious assertion is of the form ‘P but I do not know whether I know that p.’ Matthew Benton has attempted to show how proponents of the knowledge account can explain what’s wrong this assertion. I show that Benton’s explanation is inadequate, and propose my own explanation of the oddness of this dubious assertion. I also explain what’s wrong with other dubious assertions mentioned by Sosa.     

Do you see what I know? On reasons,perceptual evidence,and epistemic status

Our epistemology can shape the way we think about perception and experience. Speaking as an epistemologist, I should say that I don't necessarily think that this is a good thing. If we think that we need perceptual evidence to have perceptual knowledge or perceptual justification, we will naturally feel some pressure to think of experience as a source of reasons or evidence. In trying to explain how experience can provide us with evidence, we run the risk of either adopting a conception of evidence according to which our evidence isn't very much like the objects of our beliefs that figure in reasoning (e.g., by identifying our evidence with experiences or sensations) or the risk of accepting a picture of experience according to which our perceptions and perceptual experiences are quite similar to beliefs in terms of their objects and their representational powers. But I think we have good independent reasons to resist identifying our evidence with things that don't figure in our reasoning as premises and I think we have good independent reason to doubt that experience is sufficiently belief‐like to provide us with something premise‐like that can figure in reasoning. We should press pause. We shouldn't let questionable epistemological assumptions tell us how to do philosophy of mind. I don't think that we have good reason to think that we need the evidence of the senses to explain how perceptual justification or knowledge is possible. Part of my scepticism derives from the fact that I think we can have kinds of knowledge where the relevant knowledge is not evidentially grounded. Part of my scepticism derives from the fact that there don't seem to be many direct arguments for thinking that justification and knowledge always requires evidential support. In this paper, I shall consider the three arguments I've found for thinking that justification and knowledge do always require evidential support and explain why I don't find them convincing. I think that we can explain perceptual justification, rationality, and defeat without assuming that our experiences provide us with evidence. In the end, I think we can partially vindicate Davidson's (notorious) suggestion that our beliefs, not experiences, provide us with reasons for forming further beliefs. This idea turns out to be compatible with foundationalism once we understand that foundational status can come from something other than evidential support.     

Ecological perception affords an explanation of object permanence

In this paper I aim to present an explanation of object permanence that is derived from an ecological account of perceptually based action. In understanding why children below a certain age do not search for occluded objects, one must first understand the process by which these children perform certain intentional actions on non-occluded items; and to do this one must understand the role affordances play in eliciting retrieval behaviour. My affordance-based explanation is contrasted with Shinskey and Munakata's graded representation account; and although I do not reject totally the role representations play in initiating intentional action I nevertheless maintain that only by incorporating direct perception into an account of object permanence can a fuller understanding of this phenomenon be achieved.     

On the Historicity of Scientific Objects

The historical variation of scientific knowledge has lent itself to the development of historical epistemology, which attempts to historicize the origin and establishment of knowledge claims. The questions I address in this paper revolve around the historicity of the objects of those claims: How and why do new scientific objects appear? What exactly comes into being in such cases? Do scientific objects evolve over time and in what ways? I put forward and defend two theses: First, the ontology of science is so rich and variegated that there are no universally valid answers to these questions. Second, we need a pluralist account of scientific objects, a pluralist metaphysics that can do justice to their rich diversity and their various modes of being and becoming. I then focus on hidden objects, which are supposed to be part of the permanent furniture of the universe, and I discuss their birth and historicity: They emerge when various phenomena coalesce as manifestations of a single hidden cause and their representations change over time. Finally, I examine the conditions under which an evolving representation may still refer to the same object and I illustrate my argument drawing upon the early history of electrons.     

The Basis of Self-Knowledge

I discuss the claim what makes self-knowledge epistemologically distinctive is the fact that it is baseless or groundless. I draw a distinction between evidential and explanatory baselessness and argue that self-knowledge is only baseless in the first of these senses. Since evidential baselessness is a relatively widespread phenomenon the evidential baselessness of self-knowledge does not make it epistemologically distinctive and does not call for any special explanation. I do not deny that self-knowledge is epistemologically distinctive. My claim is only that talk of its evidential baselessness is insufficient to account for its epistemological distinctiveness.

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Building Cognition: The Construction of Computational Representations for Scientific Discovery

Novel computational representations, such as simulation models of complex systems and video games for scientific discovery (Foldit, EteRNA etc.), are dramatically changing the way discoveries emerge in science and engineering. The cognitive roles played by such computational representations in discovery are not well understood. We present a theoretical analysis of the cognitive roles such representations play, based on an ethnographic study of the building of computational models in a systems biology laboratory. Specifically, we focus on a case of model‐building by an engineer that led to a remarkable discovery in basic bioscience. Accounting for such discoveries requires a distributed cognition (DC) analysis, as DC focuses on the roles played by external representations in cognitive processes. However, DC analyses by and large have not examined scientific discovery, and they mostly focus on memory offloading, particularly how the use of existing external representations changes the nature of cognitive tasks. In contrast, we study discovery processes and argue that discoveries emerge from the processes of building the computational representation. The building process integrates manipulations in imagination and in the representation, creating a coupled cognitive system of model and modeler, where the model is incorporated into the modeler's imagination. This account extends DC significantly, and we present some of the theoretical and application implications of this extended account.     

Why Feynman Diagrams Represent

There are two distinct interpretations of the role that Feynman diagrams play in physics: (i) they are calculational devices, a type of notation designed to keep track of complicated mathematical expressions; and (ii) they are representational devices, a type of picture. I argue that Feynman diagrams not only have a calculational function but also represent: they are in some sense pictures. I defend my view through addressing two objections and in so doing I offer an account of representation that explains why Feynman diagrams represent. The account that I advocate is a version of that defended by Kendall Walton, which provides us with a basic characterization of the way that representations in general work and is particularly useful for understanding distinctively pictorial representations – in Walton’s terms, depictions. The question of the epistemic function of Feynman diagrams as pictorial representations is left for another time.     

Predictive processing and the representation wars: a victory for the eliminativist (via fictionalism)

In this paper I argue that, by combining eliminativist and fictionalist approaches toward the sub-personal representational posits of predictive processing, we arrive at an empirically robust and yet metaphysically innocuous cognitive scientific framework. I begin the paper by providing a non-representational account of the five key posits of predictive processing (“prediction-signal”, “error-signal”, “prior”, “likelihood”, and “posterior probability”). Then, I motivate a fictionalist approach toward the remaining indispensable representational posits of predictive processing, and explain how representation can play an epistemologically indispensable role within predictive processing explanations without thereby requiring that representation metaphysically exists. Finally, I outline four consequences of accepting this approach and explain why they are beneficial: (1) we arrive at a victory for metaphysical eliminativism in the ‘representation wars’; (2) my account fits with extant empirical practice; (3) my account provides guidance for future research; and, (4) my account provides the beginnings of a response to Mark Sprevak’s IBE problem for fictionalist approaches toward sub-personal representation.     

PERSONS AND THE EXTENDED-MIND THESIS

The extended-mind thesis (EM) is the claim that mentality need not be situated just in the brain, or even within the boundaries of the skin. Some versions take "extended selves" be to relatively transitory couplings of biological organisms and external resources. First, I show how EM can be seen as an extension of traditional views of mind. Then, after voicing a couple of qualms about EM, I reject EM in favor of a more modest hypothesis that recognizes enduring subjects of experience and agents with integrated bodies. Nonetheless, my modest hypothesis allows subpersonal states to have nonbiological parts that play essential roles in cognitive processing. I present empirical warrant for this modest hypothesis and show how it leaves room for science and religion to coexist.     

Functionalism and propositions

Conclusion Some have argued, following Stalnaker, that a plausible functionalist account of belief requires coarse-grained propositions. I have explored a class of functionalist accounts, and my argument has been that, in this class, there is no account which meetsall of the following conditions: it is plausible, noncircular, and allows for the validity of the argument to coarse-grained propositions. In producing this argument, I believe that I have shown that it might be open to a functionalist to adopt fine-grained propositions; thus, one might be a functionalist without holding that all mathematical beliefs are about strings of symbols (and that the belief that all bachelors are unmarried men is a belief about words).My project in this paper has been minimal in the following sense. I havenot argued thatno functionalist account of belief which meets the three conditions can be produced; rather, I have simply explored the inadequacies of certain sorts of accounts. I think that this is useful insofar as it makes clear the challenges to be met by an account of belief which can play the required role in the argument to coarse-grained propositions. It is compatible with my position that such an account is forthcoming, insofar as I have not produced a functionalist theory of belief which is clearly non-circular, plausible, and which yields fine-grained propositions. Of course, it is also compatible with my position that no plausible, non-circular functionalist account of belief of any sort can be produced. My argument has been that,if one construes such mental states as belief as functional states, no convincing argument has yet been produced that they require coarse-grained objects.     

Classification objects, ideal observers & generative models

A successful vision system must solve the problem of deriving geometrical information about three-dimensional objects from two-dimensional photometric input. The human visual system solves this problem with remarkable efficiency, and one challenge in vision research is to understand how neural representations of objects are formed and what visual information is used to form these representations. Ideal observer analysis has demonstrated the advantages of studying vision from the perspective of explicit generative models and a specified visual task, which divides the causes of image variations into the separate categories of signal and noise. Classification image techniques estimate the visual information used in a task from the properties of “noise” images that interact most strongly with the task. Both ideal observer analysis and classification image techniques rely on the assumption of a generative model. We show here how the ability of the classification image approach to understand how an observer uses visual information can be improved by matching the type and dimensionality of the model to that of the neural representation or internal template being studied. Because image variation in real world object tasks can arise from both geometrical shape and photometric (illumination or material) changes, a realistic image generation process should model geometry as well as intensity. A simple example is used to demonstrate what we refer to as a “classification object” approach to studying three-dimensional object representations.     

The Compatibility of Freedom and Necessity in Marx's Idea of Communist Society

Taking a well‐known passage from the third volume of Capital as my starting point, I explain on what grounds Marx thinks that freedom and necessity will be compatible in a communist society. The necessity in question concerns having to produce to satisfy material needs. Unlike some accounts of this issue, I argue that the compatibility of freedom and necessity in communist society has more to do with how production is organized than with the direct relation of the worker to the object produced or to his or her own productive activity. Moreover, I show how self‐realization and a form of activity that possesses an intrinsic value are made possible by the organization of the production process and how this is integral to Marx's account of the compatibility of freedom and necessity in communist society.     

Good News for Moral Error Theorists: A Master Argument Against Companions in Guilt Strategies

Moral error theories are often rejected by appeal to ‘companions in guilt’ arguments. The most popular form of companions in guilt argument takes epistemic reasons for belief as a ‘companion’ and proceeds by analogy. I show that this strategy fails. I claim that the companions in guilt theorist must understand epistemic reasons as evidential support relations if her argument is to be dialectically effective. I then present a dilemma. Either epistemic reasons are evidential support relations or they are not. If they are not, then the companions in guilt argument fails. If they are, then a reduction of epistemic reasons to evidential support relations becomes available and, consequently, epistemic reasons cease to be a viable ‘companion’ for moral reasons. I recommend this structure of argument over existing strategies within the literature and defend my claims against recent objections from companions in guilt theorists.