This study examines the theology of the fourth-century bishop, Hilary of Poitiers, concentrating particularly on two commentaries written at different times in his life. The main focus of the study is on Hilary's anthropological theology.

Now available in English for the first time, The Visibility of the Image explores the development of an influential aesthetic tradition through the work of six figures. Analysing their contribution to the progress of formal aesthetics, from its origins in Germany in the 1880s to semiotic interpretations in America a century later, the six chapters cover: Robert Zimmermann (1824-1898), the first to separate aesthetics and metaphysics and approach aesthetics along the lines of formal logic, providing a purely syntactic way of (...) using signs, regardless of objective content; Alois Riegl (1858-1905), who went on to further develop aesthetics on the model of formal logic, creating a theory of style in response to Zimmermann's call for an aesthetics oriented toward formal logic; Heinrich Wölfflin (1864-1945), who represents a step toward an understanding of consciousness by using pictures as cognitive tools; Konrad Fiedler (1841-1895), the Saxon philosopher who considered the possibility that some kinds of images are made and viewed not for what they show, but for their visibility's sake alone; Maurice Merleau-Ponty (1908-1961), responsible for taking up the connections between the problems of reducing the range of potential meanings and contexts of a given image down to just the picture surface; Charles William Morris (1901-1979), who set out to establish whether a picture with no objective reference, such as an abstract painting, still counts as a sign, and if so, in what sense. Bringing these thinkers together and interlinking their ideas, Lambert Wiesing presents an engaging history of formal aesthetics, while reconstructing the philosophical foundations for the appearance of new image forms in the 20th century, including the video-clip, abstract collage, digital simulation and virtual reality. Using this original approach, The Visibility of the Image introduces the rise of modern image theory and provides a valuable account of our engagement with pictures in the 21st century. (shrink)

This book collects some of the most exciting pioneering work in perceptual and cognitive psychology. The authors' quantitative approach to the study of mental images and their representation is clearly depicted in this invaluable volume of research which presents, interprets, evaluates, and extends their work. The selections are preceded by a thorough review of the history of their experiments, and all of the articles have been updated with reviews of the current literature. The book's first part focuses on mental (...) rotation; the second includes other, more complex transformations and sequences of transformations. A third part describes work on rotational transformations in the context of the perceptual illusion of &"apparent motion.&" Roger N. Shepard is Professor of Psychology, Stanford University. Lynn A. Cooper is Professor of Psychology, University of Arizona. A Bradford Book. (shrink)

Thoughtful Images: Philosophy Illustrated is the first systematic investigation of how artists throughout the ages have illustrated philosophical texts, ideas, concepts, and theories. The book begins by developing a theory of visual illustrations of philosophical texts and undermining what the author calls "the denigration of illustration." The book then takes a more historical approach, beginning in Ancient Greece and Rome and proceeding through Medieval illuminations and printed broadsides to the frontispieces of philosophical texts. Throughout, attention is paid to how (...) technological developments enable different means for illustrating philosophy. (shrink)

Roland Barthes remains one of the most influential cultural theorists of the postwar period and Image-Music-Text is his most widely taught work. Ed White provides students with a clear guide to this essential but difficult text. As students are increasingly expected to write across a range of media, Barthes' work can be understood as an early mapping of what we now call interdisciplinary or multidisciplinary study. The book's detailed section-by-section readings makes Barthes' most important writings accessible to undergraduate readers. This (...) book is a perfect companion for teaching and learning Barthes ideas in cultural studies and literary theory. (shrink)

The nature of representation is a central topic in philosophy. This is the first book to connect problems with understanding representational artifacts, like pictures, diagrams, and inscriptions, to the philosophies of science, mind, and art. Can images be a source of knowledge? Are images merely conventional signs, like words? What is the relationship between the observer and the observed? In this clear and stimulating introduction to the problem John V. Kulvicki explores these questions and more. He discusses: the (...) nature of pictorial experience and "seeing in" recognition, resemblance, pretense, and structural theories of depiction images as aids to scientific discovery and understanding mental imagery and the nature of perceptual content photographs as visual prostheses. In so doing he assesses central problems in the philosophy of images, such as how objects we make come to represent other things, and how we distinguish kinds of representation - pictures, diagrams, graphs - from one another. Essential reading for students and professional philosophers alike, the book also contains chapter summaries, annotated further reading, and a glossary. (shrink)

My aim in this paper is to offer a systematic analysis of a feature of Kant’s theory of perception that tends to be overlooked, viz., his account of how the imagination forms images in perception. Although Kant emphasizes the centrality of this feature of perception, indeed, calling it a ‘necessary ingredient’ of perception, commentators have instead focused primarily on his account of sensibility and intuitions on the one hand, and understanding and concepts on the other. However, I show that (...) careful attention to what he says about the nature of images, their connection to the imagination, and their role in perception in his Metaphysics Lectures, as well as in the Deduction and Schematism chapters of the first Critique reveals that Kant is working with a richer, more nuanced framework for perception than is often attributed to him. I contend that it is only once we have a revised framework for Kant’s theory of perception in place that we will be able to make further headway in debates, e.g., about whether or not he is a conceptualist about perception. (shrink)

Some have suggested that images can be arguments. Images can certainly bolster the acceptability of individual premises. We worry, though, that the static nature of images prevents them from ever playing a genuinely argumentative role. To show this, we call attention to a dilemma. The conclusion of a visual argument will either be explicit or implicit. If a visual argument includes its conclusion, then that conclusion must be demarcated from the premise or otherwise the argument will beg (...) the question. If a visual argument does not include its conclusion, then the premises on display must license that specific conclusion and not its opposite, in accordance with some demonstrable rationale. We show how major examples from the literature fail to escape this dilemma. Drawing inspiration from the graphical logic of C. S. Peirce, we suggest instead that images can be manipulated in a way that overcomes the dilemma. Diagrammatic reasoning can take one stepwise from an initial visual layout to a conclusion—thereby providing a principled rationale that bars opposite conclusions—and the visual inscription of this correct conclusion can come afterward in time—thereby distinguishing the conclusion from the premises. Even though this practical application of Peirce’s logical ideas to informal contexts requires that one make adjustments, we believe it points to a dynamic conception of visual argumentation that will prove more fertile in the long run. (shrink)

Radiography images are widely utilized in the health sector to recognize the patient health condition. The noise and irrelevant region information minimize the entire disease detection accuracy and computation complexity. Therefore, in this study, statistical Kolmogorov–Smirnov test has been integrated with wavelet transform to overcome the de-noising issues. Then the cat swarm-optimized deep belief network is applied to extract the features from the affected region. The optimized deep learning model reduces the feature training cost and time and improves the (...) overall disease detection accuracy. The network learning process is enhanced according to the AdaDelta learning process, which replaces the learning parameter with a delta value. This process minimizes the error rate while recognizing the disease. The efficiency of the system evaluated using image retrieval in medical application dataset. This process helps to determine the various diseases such as breast, lung, and pediatric studies. (shrink)

This is the first English translation of Husserliana XXIII, the volume in the critical edition of Edmund Husserl's works that gathers together a rich array of posthumous texts on representational consciousness. The lectures and sketches comprising this work make available the most profound and comprehensive Husserlian account of image consciousness. They explore phantasy in depth, and furnish nuanced accounts of perception and memory.

The twelve essays by Kendall Walton in this volume address a broad range of issues concerning the arts. Walton introduces an innovative account of aesthetic value, and explores relations between aesthetic value and values of other kinds. His classic 'Categories of Art' is included, as is 'Transparent Pictures', his controversial account of what is special about photographs. A new essay investigates the fact that still pictures are still, although some of them depict motion. New postscripts have been added to several (...) of the reprinted essays. (shrink)

Assembled here for the first time in English translation, Sigrid Weigel and Georgina Paul offer illuminating new insights into Benjamin's theory, combining impulses from post-structuralism, feminism, cultural anthropology and psychoanalysis.

The book also introduces a host of new experimental techniques and major hypotheses to guide future research.

Engages with the impact of modern technology on experimental physicists. This study reveals how the increasing scale and complexity of apparatus has distanced physicists from the very science which drew them into experimenting, and has fragmented microphysics into different technical traditions.

The senses present their content in the form of images, three-dimensional arrays of located sense features. Peacocke’s “scenario content” is one attempt to capture image content; here, a richer notion is presented, sensory images include located objects and features predicated of them. It is argued that our grasp of the meaning of these images implies that they have propositional content. Two problems concerning image content are explored. The first is that even on an enriched conception, image content (...) has certain expressive limitations. In particular, it cannot express absolute location and time (as opposed to spatiotemporal relations) or logical complexity. Yet, perceptual experience does seem to express certain absolute locations—namely, here and now. How can it do so? Secondly, image content cannot exhaust the significance of perceptual states. This is proved by noting that perception, memory, and anticipation can have the same image content. Yet they have different significance. These problems show that some of the significance of sensory states comes from outside the image. (shrink)

This is a book about the nature of film: about the nature of moving images, about the viewer's relation to film, and about the kinds of narrative that film is capable of presenting. It represents a very decisive break with the semiotic and psychoanalytic theories of film which have dominated discussion. The central thesis is that film is essentially a pictorial medium and that the movement of film images is real rather than illusory. A general theory of pictorial (...) representation is presented, which insists on the realism of pictures and the impossibility of assimilating them to language. It criticizes attempts to explain the psychology of film viewing in terms of the viewer's imaginary occupation of a position within the world of film. On the contrary, film viewing is nearly always impersonal. (shrink)

How do pictures represent? In this book Robert Hopkins casts new light on an ancient question by connecting it to issues in the philosophies of mind and perception. He starts by describing several striking features of picturing that demand explanation. These features strongly suggest that our experience of pictures is central to the way they represent, and Hopkins characterizes that experience as one of resemblance in a particular respect. He deals convincingly with the objections traditionally assumed to be fatal to (...) resemblance views, and shows how his own account is uniquely well placed to explain picturing's key features. His discussion engages in detail with issues concerning perception in general, including how to describe phenomena that have long puzzled philosophers and psychologists, and the book concludes with an attempt to see what a proper understanding of picturing can tell us about that deeply mysterious phenomenon, the visual imagination. (shrink)

Visual images are widely used in medical and patient education to enhance spoken or written explanations. This paper considers the role of such illustrations in shaping conceptions of the body; specifically, it addresses depictions of variant sexual anatomy and their part in the discursive production of intersex bodies. Visual language—even didactic, ‘factual’ visual language—carries latent as well as manifest content, and influences self-perceptions and social attitudes. In the case of illustrations about atypical sex development, where the need for non-stigmatising (...) communication is crucial, it is especially important to consider the implicit messages conveyed by imagery and compositional strategies. (shrink)

First published in 2002. Routledge is an imprint of Taylor & Francis, an informa company.

Most research on image schema examined the meaning configuration of words connotation. However, previous studies of adjectives are meaningful in cognitive linguistics because they provide insight into how those adjectives are involved with psychological movement. In this sense, from the perspective of cognitive linguistics, one’s conceptualization and cognition are closely associated with their bodily experience and surroundings; adjectives are no exception. The varieties of transformations of image schemas lay the foundation for the conception and perception. Accordingly, this study is an (...) investigation into the perception of adjectives and psychological activities associated with image schema. Data in this study come from adjectives in the novel The Great Gatsby, which were tagged and calculated with the help of software Python and the NLTK package. The results demonstrate that a significant amount of adjectives were used in the novel. Moreover, Nick’s psychological activities changed significantly from the SOURCE to the DESTINATION schematic stage, which is uncovered by his expression of adjectives. Finally, the results further suggest that transformations of image schema as BALANCE, CONTAINER, and PATH work together to motivate one’s linguistic expression of adjectives. The present findings have several implications for research on lexicons and literacy interpretation from cognitive linguistics. (shrink)

This long-awaited work by prominent Harvard psychologist Stephen Kosslyn integrates a twenty-year research program on the nature of high-level vision and mental ...

Imagism about Phenomenal Thought is (roughly) the view that there is some concept *Q* (for some sensory quality Q) that we can employ only while we experience the quality Q. I believe this view is theoretically significant, is or can be made intuitively appealing, and is explicitly or implicitly accepted by many contemporary philosophers However, there is no good reason to accept it. Or so I argue.

The guiding thread of this book is the distinction Colin McGinn draws between perception and imagination.

In a majority of situations the normal adult maintains posture or moves without consciously monitoring motor activity. Posture and movement are usually close to automatic; they tend to take care of themselves, outside of attentive regard. One's body, in such cases, effaces itself as one is geared into a particular intentional goal. This effacement is possible because of the normal functioning of a body schema. Body schema can be defined as a system of preconscious, subpersonal processes that play a dynamic (...) role in governing posture and movement (Head, 1920). There is an important and often overlooked conceptual difference between the subpersonal body schema and what is usually called body image . The latter is most often defined as a conscious idea or mental representation that one has of one's own body (for example, Adame, Radell, Johnson, and Cole, 1991; Gardner and Moncrieff, 1988; Schilder, 1935). Despite the conceptual difference many researchers use the terms interchangeably, leading to both a terminological and conceptual confusion. (shrink)

This article is concerned with the relationship between body, image and affect within consumer culture. Body image is generally understood as a mental image of the body as it appears to others. It is often assumed in consumer culture that people attend to their body image in an instrumental manner, as status and social acceptability depend on how a person looks. This view is based on popular physiognomic assumptions that the body, especially the face, is a reflection of the self: (...) that a person’s inner character or personality will shine through the outer appearance. The modification and cosmetic enhancement of the body through a range of regimes and technologies can be used to construct a beautiful appearance and thereby a beautiful self. The article begins by examining body images in consumer culture and their relation to photography and moving images. This is followed by an examination of the consumer culture transformative process through a discussion of cosmetic surgery. The article then questions the over-simplistic logic that assumes that transformative techniques will automatically result in a more positive and acceptable body image. The new body and face may encourage people to look at the transformed person in a new way. But the moving body, the body without image, which communicates through proprioceptive senses and intensities of affect, can override the perception of the transformed appearance. A discussion of the affective body follows, via a closer examination of the body without image, the opening of the body to greater affect and indeterminacy. The affective body image and its potential greater visibility through new media technologies are then discussed through some examples taken from digital video art. The article concludes by examining some of the implications of these shifts within consumer culture and new media technologies. (shrink)

Images in Spite of All reveals that these rare photos of Auschwitz, taken clandestinely by one of the Jewish prisoners forced to help carry out the atrocities there, were made as a potent act of resistance.

In lieu of an abstract, here is a brief excerpt of the content:Image and SilenceGiorgio AgambenTranslated by Leland de la Durantaye (bio)[End Page 94]In the Roman pantheon there is a goddess named Angerona, represented with her mouth bound and sealed (ore obligato signatoque).1 Her finger is raised to her lips as if to command silence. Scholars claim that she represents, in the context of pagan mystery cults, the power of silence, although there is no consensus among them as to how (...) to understand this power. Etymologically speaking, myein, the root of the Greek word mysterion, means “to close the mouth, to silence.” At the beginning of the sacred rites in Eleusis a herald “commanded silence” (epittatei tēn siōpen). It is said that that the initiates into these Eleusinian mysteries were required to maintain absolute silence concerning what they had seen and heard during their initiation. Our question is how to understand this silence. Was it a prohibition aimed at keeping a secret doctrine from the uninitiated? Or did it concern, instead, something truly impossible to say?To begin we might ask what sense there might have been in the obligation to remain silent given that it was possible for anyone—including slaves, and thus, potentially, the entire population of Athens—to be initiated into the mysteries. In his early work, “On Philosophy,” Aristotle affirmed that, “the initiates do not need to learn something (mathein ti), but, instead, to be disposed to something, to experience and to undergo something (pathein kai diatethēnai).”2 It would therefore be possible that in the ancient mystery cults the initiate did not learn a doctrine that could be expressed in words (yet had to remain secret), but, instead, experienced something essentially silent, something impossible to say. “A great awe in face of the gods,” we read in the Homeric ode to Demeter, “silences the voice.”3The impossibility of speaking—and the power of silence—has two forms, one joyful and the other disturbing. In myth muteness is often associated with rape. The Romans tell the story of Lara who was punished for her inclination to gossip by being rendered mute and who was then raped in a sacred wood by Mercury (who took advantage of her impossibility of speaking). Before being transformed into a swallow Philomela was raped by Tereus, who cut off her tongue to prevent her from recounting his misdeed. Persephone, raped, kidnapped, and conducted to Hades, remained there silent as the dead. In every one of these cases silence is the painful experience of a privation of speech, of being unable to say what one wishes to say.In Gnostic mythology, the preexisting, eternal, uncreated God contains within himself a female figure which is his silence, Sigē. From his union with Silence Thought is born. “Sigē,” we read in a Valentinian text, “is the mother of all the beings that have emerged from the Abyss. He who has failed to say the unsayable has silenced it; he who was understood the unsayable, has declared it unsayable.”4 Here too silence appears as the experience of an impossibility of saying, as a privation. It is in opposition to this abyssal figure of silence that the church fathers affirmed the primacy of the logos in which God is revealed. Nevertheless, of the power of silence Heidegger would write: “This primordial silence is more powerful than any human potentiality. No one, on his or her own, has ever invented language—that is, has been strong enough to break the power of this silence.”5 [End Page 95]In Kafka’s parable on Ulysses, we are told that the silence of the Sirens is more perilous than their song, and that Ulysses—who realized, as his ship neared them, that the Sirens were silent—put on an act to protect himself from this silence, plugging his ears with wax and having his men tie him to the mast.6 In Kafka’s retelling of the tale, the silence of the Sirens represents a zero degree of song and, following a stubborn tradition that sees in absence the most extreme form of presence, also represents an at once zero and ultimate degree of reality. In this sense Heidegger could write... (shrink)

Cet ouvrage a pour objectif d'interroger en profondeur la manière avec laquelle, historiquement, les philosophes ont « pratiqué l'image dans le concept ». Les auteurs s'interrogent sur le recours à la visualité et à la métaphore dans l'élaboration des schèmes philosophiques à travers l'histoire de la philosophie et les rapports que cette dernière entend tisser avec l'histoire du monde. On tâche de cerner les raisons que les philosophes ont pu avoir de mobiliser ou au contraire de rejeter cet opérateur conceptuel, (...) d'assumer sa performativité ou bien de déplorer son caractère résiduel et résistant à toute systématisation de la rationalité. L'ouvrage cherche ainsi à dégager quelques figures centrales du nouage que les philosophes ne cessent d'opérer au sein du chiasme reliant la construction philosophique de l'image et la constitution de la pensée par l'image. Platon, saint Augustin, Descartes, Spinoza, Kant, Fichte, Schelling, Nietzsche, Bergson, Bachelard, Wittgenstein, Fink, Sartre, Merleau-Ponty, Castoriadis, Simondon et Deleuze sont les auteurs privilégiés dans cet ensemble. (shrink)

The inspectability of after-images has been denied. A typical claim is Ilham Dilman's: ‘I cannot say my apprehension of the after-image I see has changed but not the after-image itself’, for, he says, appearance and reality are one as regards the after-image. His reason is that this is a logical consequence of the fact that other people have no possible basis for correcting what I say about the after-image I see.

The Image of Law is the first book to examine law through the work of Gilles Deleuze, activating his thought within problems of jurisprudence and developing a concept of judgment that acknowledges its inherently creative capacity.

"Churchland and Hooker have collected ten papers by prominent philosophers of science which challenge van Fraassen's thesis from a variety of realist perspectives. Together with van Fraassen's extensive reply... these articles provide a comprehensive picture of the current debate in philosophy of science between realists and anti-realists."—Jeffrey Bub and David MacCallum, Foundations of Physics Letters.

This paper explores whether brain images may be admitted as evidence in criminal trials under Federal Rule of Evidence 403, which weighs probative value against the danger of being prejudicial, confusing, or misleading to fact finders. The paper summarizes and evaluates recent empirical research relevant to these issues. We argue that currently the probative value of neuroimages for criminal responsibility is minimal, and there is some evidence of their potential to be prejudicial or misleading. We also propose experiments that (...) will directly assess how jurors are influenced by brain images. (shrink)

Ontology is one strategy for promoting interoperability of heterogeneous data through consistent tagging. An ontology is a controlled structured vocabulary consisting of general terms (such as “cell” or “image” or “tissue” or “microscope”) that form the basis for such tagging. These terms are designed to represent the types of entities in the domain of reality that the ontology has been devised to capture; the terms are provided with logical defi nitions thereby also supporting reasoning over the tagged data. Aim: This (...) paper provides a survey of the biomedical imaging ontologies that have been developed thus far. It outlines the challenges, particularly faced by ontologies in the fields of histopathological imaging and image analysis, and suggests a strategy for addressing these challenges in the example domain of quantitative histopathology imaging. The ultimate goal is to support the multiscale understanding of disease that comes from using interoperable ontologies to integrate imaging data with clinical and genomics data. (shrink)

Boundary Images investigates the political, material, and visual work that images do to cross and blur the boundaries between the technological and biological and between humans, machines, and nature. Exploring the limits of the visual and beyond what can be seen, Boundary Images posits these boundaries as starting points for the production of new and radically different ways of knowing about the world.

Moral Images of Freedom resurrects the Kantian project of affirmative political philosophy and traces its oft-forgotten influences found in thinkers like Martin Heidegger, Ernst Cassirer, Frantz Fanon, and Walter Benjamin. As a whole the book attempts to respond to nihilistic claims about the empty purpose of critical theory in a world so utterly captured by violence in all of its worst forms: economic, social, political, and cultural. Instead, this book draws together a sweeping thread of hope in the varied (...) symbolic forms of freedom persistent throughout the work of a broader range of critical theorists and addresses the burning challenge for such work to respond seriously to the need for a decolonization of critical theory itself and a sustained commitment to the possible future of socialism. (shrink)

Traditionally the central trope in Christian theological anthropology, “the image of God” tends to function more as a noun than a verb. While that has grounded significant interplay between specific Christian formulations and the concepts of nontheological disciplines and cultural constructs, it facilitates the withdrawal of the image and of theological anthropology more broadly from the context of active relation with God. Rather than a static rendering of the image a more interactionist, dynamic, and relational view of “imaging God” is (...) commended as a key anthropological term. Engaging with Psalm 8 suggests that, biblically, asking the anthropological question “What is humanity?” is tied to the answer to the theological question: who is God? This locates theological anthropology securely within the interactive context of being related to by God and suggests that theological anthropology might be a matter of performance rather than definition: actively imaging God. (shrink)

Les Images parlantes : l'étrangeté habite ce titre! Les détournements de l'image vers quelque langage codé, les contrebandes de l'image au gré de textes particulièrement transgresseurs, les transports sur la langue sont multiples. Une évidence s'impose donc : l'image ne parle pas, mais elle doit être parlée. Dès lors s'ouvre le domaine des fables et des fictions émanant de l'image elle-même, aptes toutefois à la spécifier comme à la sonder. Exhiber une fonction inédite et captatrice de l'image en tant (...) qu'elle est parlée, c'est se prononcer pour son capital créateur, son ingénieuse inventivité. Bref, le registre de l'iconique pourrait, au terme de ce livre, se laisser argumenter en ces mots : " Voir, c'est faire parler "! (shrink)

À quelles conditions peut-on, dans un discours réel, utiliser un énoncé comme argument en faveur d’un autre? La réponse semble aller de soi, au moins si l’on assimile l’argumentation à une espèce de raisonnement - peut-être lâche et flou, mais analogue en son fond à la démonstration étudiée par les logiciens. Dans ce cas, l’enchaînement des énoncés se fonde sur les informations qu’ils véhiculent, sur ce qu’ils disent de la réalité. C’est justement l’inverse que veut montrer la théorie des échelles (...) argumentatives. Selon elle, la structure des énoncés, au sens le plus étroitement grammatical du terme, contient, indépendamment des informations qu’ils donnent, des indications sur le type de conclusions qu’ils peuvent servir. Le sens même de nos paroles doit alors être vu comme étant, de façon intrinsèque, un moyen pour orienter le discours de l’autre, l’intention de dire ne se distinguant pas de l’intention de faire dire. Ce qui fait triompher le structuralisme là où on l’attend le moins, en sémantique - la valeur sémantique d’un énoncé est constituée par allusion à la possibilité d’un autre énoncé - l’énoncé de l’autre. (shrink)

Seeing and hearing God in the Old Testament -- Seeing and hearing God in the New Testament -- Word and image in classical Greek philosophy -- Philosophers and sophists of the early Roman era -- Image, text and incarnation in the second century -- Image, text and incarnation in the third century -- Neoplatonism and the arts -- Image, text and incarnation in the fourth century -- Myth and text in proclus -- Christianity of Christian Platonism.

In his 1903 Syllabus, Charles S. Peirce makes a distinction between icons and iconic signs, or hypoicons, and briefly introduces a division of the latter into images, diagrams, and metaphors. Peirce scholars have tried to make better sense of those concepts by understanding iconic signs in the context of the ten classes of signs described in the same Syllabus. We will argue, however, that the three kinds of hypoicons can better be understood in the context of Peirce's sixty-six classes (...) of signs. We analyze examples of hypoicons taken from the field of information design, describing them in the framework of the sixty-six classes, and discuss the consequences of those descriptions to the debate about the order of determination of the 10 trichotomies that form those classes. (shrink)

In developing a new theory of vision in Ad Vitellionem paralipomena Kepler introduced a new optical concept, pictura, which is an image projected on to a screen by a camera obscura. He distinguished this pictura from an imago, the traditional image of medieval optics that existed only in the imagination. By the 1670s a new theory of optical imagery had been developed, and Kepler's pictura and imago became real and virtual images, two aspects of a unified concept of image. (...) The new concept of image developed out of a synthesis of Kepler's determination of the geometrical location of a pictura as the limit, or focus, of refracted pencils of rays and the triangulation used by a single eye to determine the perceived location of an imago. The distinction between real and imaginary images was largely developed by Gilles Personne de Roberval and the Jesuits Francesco Eschinardi and Claude François Milliet Dechales. (shrink)

It is well known that aggregating the degree-of-belief functions of different subjects by linear pooling or averaging is subject to a commutativity dilemma: other than in trivial cases, conditionalizing the individual degree-of-belief functions on a piece of evidence E followed by linearly aggregating them does not yield the same result as rst aggregating them linearly and then conditionalizing the resulting social degree- of-belief function on E. In the present paper we suggest a novel way out of this dilemma: adapting the (...) method of update or learning such that linear pooling com- mutes with it. As it turns out, the resulting update scheme – imaging on the evidence – is well-known from areas such as the study of conditionals and cau- sal decision theory, and a formal result from which the required commutativity property is derivable was supplied already by Gärdenfors in a different con- text. We end up determining under which conditions imaging would seem to be right method of update, and under which conditions, therefore, group update would not be affected by the commutativity dilemma. (shrink)