Implicit and explicit filling-in phenomena should be distinguished. Blind spot phenomena and mechanisms of boundary completion can be accounted for by implicit filling-in. Surface regions are “painted” with perceptual quantities, such as brightness, by explicit filling-in. “Filling-in” and “finding-out” relate to different computational tasks. Mechanisms of purposive computation (e.g., for navigation) evaluate local measurements, thus “finding out”; whereas mechanisms for grasping might require passive reconstruction, thus “filling in.”.

Against the Newtonian view of color, according to which the world is colorless and colors are subjective sensations, phenomenologists keep insisting that colors are in the world. In order to defend this view of the “being in the world” of colors, this paper tries to elucidate the essential spatiality of colors on the basis of James’s thesis of the intrinsic spatiality of sensation, Katz’s phenomenological description of various spatial characters of color, and Gibson’s ecological optics. The noticeable correspondence (...) between Katz’s phenomenology and Gibson’s ecological optics indicates to us a possible way to an ecological phenomenology of colors. (shrink)

Scholarship on Aristotle’s theory of visual perception has traditionally held that Aristotle had a single, static, conception of light and that he believed that illumination occurred prior to and independent of the actions of colours. I contend that this view precludes the medium from becoming actually transparent, thus making vision impossible. I here offer an alternative to the traditional interpretation, using contemporary conceptual tools to make good philosophical sense of Aristotle’s position. I call my view the ‘ecological’ interpretation. It (...) postulates two conceptions of light: non-visible mobile propagated light and visible static illumination produced by the interaction of propagated light with the environment’s coloured textured surfaces. I argue that these contemporary conceptual tools can find a foothold in and consistently enrich Aristotle’s extant position and that, with their aid, we can restore coherence to his theories of light and vision. (shrink)

The question of whether there are laws in ecology is important for a number of reasons. If, as some have suggested, there are no ecological laws, this would seem to distinguish ecology from other branches of science, such as physics. It could also make a difference to the methodology of ecology. If there are no laws to be discovered, ecologists would seem to be in the business of merely supplying a suite of useful models. These models would need to (...) be assessed for their empirical adequacy but not for their ability to capture fundamental truths, or the like. If, on the other hand, ecology does have laws, this prompts further questions about what these laws are and why even the best candidates for ecological laws fall short of what might be expected of laws. (shrink)

Different explanations of color vision favor different philosophical positions: Computational vision is more compatible with objectivism (the color is in the object), psychophysics and neurophysiology with subjectivism (the color is in the head). Comparative research suggests that an explanation of color must be both experientialist (unlike objectivism) and ecological (unlike subjectivism). Computational vision's emphasis on optimally prespecified features of the environment (i.e., distal properties, independent of the sensory-motor capacities of the animal) is unsatisfactory. Conceiving of visual perception instead as (...) the visual guidance of activity in an environment that is determined largely by that very activity suggests new directions for research. (shrink)

Central to contemporary cognitive science is the notion that mental processes involve computations defined over internal representations. This view stands in sharp contrast to the to visual perception and cognition, whose most prominent proponent has been J.J. Gibson. In the direct theory, perception does not involve computations of any sort; it is the result of the direct pickup of available information. The publication of Gibson's recent book (Gibson 1979) offers an opportunity to examine his approach, and, more generally, to contrast (...) the theory of direct perception with the computational/representational view. In the first part of the present article (Sections 2direct perceptioncase study”: the problem of perceiving the three-dimensional shape of moving objects is examined. This problem, which has been extensively studied within the immediate perception framework, serves to illustrate some of the inherent shortcomings of that approach. Finally, in Section 5, an attempt is made to place the theory of direct perception in perspective by embedding it in a more comprehensive framework. (shrink)

This chapter, which describes the spatiality of conscious phenomena, such as colours and sounds, addresses James Gibson’s ecological approach to confirm and develop further the Husserlian phenomenological view of colours and sounds. The ecological approach to perception could be regarded as an attempt to undertake empirical research corresponding to the phenomenological insight of perception. In this context, in addition to the Husserlian concept of “adumbration” and the Gibsonian concept of “ecological optics,” the differentiation of various modes (...) of colour appearances, which David Katz explicated, is focused on, developed and applied further to the phenomena of sounds. On the basis of these discussions, the multi-dimensional character of colours and sounds are explicated, and traditional views on colours and sounds, which neglect this character, are criticized. The concept of multi-dimensionality discovers the remarkable diversity of the world of colours and sounds, which demonstrate the diversity and multiple dimensionality of the field of consciousness. (shrink)

An empirically based view of size and distance perceptual content and phenomenology is introduced, in which perceivers measure worldly size and distance against their bodies. Central principles of the formal, representational theory of the measurement of extensive magnitudes are then applied in framing the account in a precise way. The question of whether spatial-perceptual experience is “unit-free” is clarified. The framework is used to assess Dennis Proffitt's proposal that spatial setting is perceived in various “units,” “scales,” or “rulers”, some of (...) them non-spatial—distance in terms of calories burned to traverse and the like. The debate between Proffitt and Firestone about the commensurability of differing measurement scales held by Proffitt to be relied on by perceivers is then clarified and resolved. Finally, the measurement theory framed account of size and distance perception is used to illuminate Gibson’s famous but elusive contrasts between “geometrical optics” and “ecological optics” and between the “physical world” and the “animal environment”. (shrink)

The chapter deals with misconceptions in perception theory that are based on the idea of slicing the nature of perception along the joints of physics and on corresponding ill-conceived ʹpurposesʹ and ʹgoalsʹ of the perceptual system. It argues that the conceptual structure underlying the percept cannot be inferentially attained from the sensory input. The output of the perceptual system, namely meaningful categories, is evidently vastly underdetermined by the sensory input, namely physico-geometric energy patterns. Thus, the core task of perception theory (...) is to understand the internal conceptual structure with which our perceptual system is endowed. The conceptual structure underlying the semantic distinctions that characterise the output of the perceptual system can, by conceptual necessity, only be expressed by a logical language that is strictly more powerful than the logical language by which sensory notions can be expressed. Consequently, the internal structure underlying perceptual meaning – including core notions such as ‘Gestalt’ or ‘perceptual object’ – cannot be derived, by whatever kind of general inductive machinery, from the sensory input, or, more generally, from experience. (shrink)

Gibson's ecological approach to depiction is compared with Nelson Goodman's relativist theory of representation. Goodman's commitment to radical relativism and Gibson's to direct realism would make these thinkers unlikely candidates for comparison if Goodman himself had not indicated a substantial body of agreement with Gibson in the area of picture perception. The present study analyzes this agreement through systematic discussion of the following theses: realism in representation is not a function of geometrical optics, physical similarity to what is (...) depicted, or deception; pictures differ in density and articulation from words, so that picturing has no explicit vocabulary; and artists can teach us new ways to see the world. The agreement between Goodman and Gibson has wide-ranging implications for the further development of what might be called a Gibsonian relativism. (shrink)

In this target article we question the assumption that perception is divided into separate domains of vision, hearing, touch, taste, and smell. We review implications of this assumption for theories of perception and for our understanding of ambient energy arrays (e.g., the optic and acoustic arrays) that are available to perceptual systems. We analyze three hypotheses about relations between ambient arrays and physical reality: (1) that there is an ambiguous relation between ambient energy arrays and physical reality, (2) that there (...) is a unique relation between individual energy arrays and physical reality, and (3) that there is a redundant but unambiguous relation, within or across arrays, between energy arrays and physical reality. This is followed by a review of the physics of motion, focusing on the existence and status of referents for physical motion. Our review indicates that it is not possible, in principle, for there to be a unique relation between physical motion and the structure of individual energy arrays. We argue that physical motion relative to different referents is specified only in the global array, which consists of higher-order relations across different forms of energy. The existence of specificity in the global array is consistent with the idea of direct perception, and so poses a challenge to traditional, inference-based theories of perception and cognition. However, it also presents a challenge to much of the ecological approach to perception and action, which has accepted the assumption of separate senses. (shrink)

In this essay I propose a new theory of taste, starting from the assumption of the multisensorial and ecological approach to the senses, as proposed by Gibson in his psychology of perception and by Dewey in his philosophy and aesthetics. In contrast with an optical approach to tastes and tasting, here I propose the concept of haptic taste to describe a perceptual engagement deeply involved in the processes of experiencing food and beverages, although my examples are mostly related to (...) wine. Finally I spell out the implications of a theory of haptic taste for the way we approach cultivation of taste and expertise. I suggest we should turn from the idea of ‘good taste’ as the result of trained and acquired skills to taste as a task, to mean the practical and continuous attuning with the environment we actively contribute to shape. I believe it is appropriate today to move from a culture of taste, based on an elevation strategy, to a culture with taste, which emphasizes educated nurture. (shrink)

The Cell Ontology (CL) is designed to provide a standardized representation of cell types for data annotation. Currently, the CL employs multiple is_a relations, defining cell types in terms of histological, functional, and lineage properties, and the majority of definitions are written with sufficient generality to hold across multiple species. This approach limits the CL’s utility for cross-species data integration. To address this problem, we developed a method for the ontological representation of cells and applied this method to develop a (...) dendritic cell ontology (DC-CL). DC-CL subtypes are delineated on the basis of surface protein expression, systematically including both species-general and species-specific types and optimizing DC-CL for the analysis of flow cytometry data. This approach brings benefits in the form of increased accuracy, support for reasoning, and interoperability with other ontology resources. 104. Barry Smith, “Toward a Realistic Science of Environments”, Ecological Psychology, 2009, 21 (2), April-June, 121-130. Abstract: The perceptual psychologist J. J. Gibson embraces a radically externalistic view of mind and action. We have, for Gibson, not a Cartesian mind or soul, with its interior theater of contents and the consequent problem of explaining how this mind or soul and its psychological environment can succeed in grasping physical objects external to itself. Rather, we have a perceiving, acting organism, whose perceptions and actions are always already tuned to the parts and moments, the things and surfaces, of its external environment. We describe how on this basis Gibson sought to develop a realist science of environments which will be ‘consistent with physics, mechanics, optics, acoustics, and chemistry’. (shrink)

This article attempts to develop a theoretical approach to exploration of the environment, of intra-environmental information processes and mutually determinative relationships, and mode of being. Relying on the theoretical postulates of Gregory Bateson, the information theory of Claude Shannon, the concept of predictive processing, and Nikolai Ladovsky’s principle of economy of perception in architecture, the author seeks to show that the environment can act as an alternative mode to the subject for organizing experience. This interpretation of the concept of environment (...) can serve as a foundation for constructing an optics of inquiry that is not human-centric but at the same time could remain an optics of human inquiry. (shrink)

The perceptual psychologist J. J. Gibson embraces a radically externalistic view of mind and action. We have, for Gibson, not a Cartesian mind or soul, with its interior theater of contents and the consequent problem of explaining how this mind or soul and its psychological environment can succeed in grasping physical objects external to itself. Rather, we have a perceiving, acting organism, whose perceptions and actions are always already tuned to the parts and moments, the things and surfaces, of its (...) external environment. We describe how on this basis Gibson sought to develop a realist science of environments which will be ‘consistent with physics, mechanics, optics, acoustics, and chemistry’. (shrink)

This article is based on Gibson’s “experimental phenomenology” and ecological perspective. It aims to develop Merleau-Ponty’s concept of “incarnate” by relating it to the more general concept of “illusion” in order to apply it to digital environments and immersive virtual realities. First of all, we should clarify, from a phenomenological point of view, the notion of “world.” Although the concept of “world” is closely linked to that of “reality,” it cannot be superimposed on it. We will analyze this distinction (...) by focusing on specific cases of optical-geometric illusions and their ontological and epistemological implications. We will then extend them from the natural to the digital world. (shrink)

An original quantum foundations concept of a deep learning computational Universe is introduced. The fundamental information of the Universe (or Triuniverse)is postulated to evolve about itself in a Red, Green and Blue (RGB) tricoloured stable self-mutuality in three information processing loops. The colour is a non-optical information label. The information processing loops form a feedback-reinforced deep learning macrocycle with trefoil knot topology. Fundamental information processing is driven by ψ-Epistemic Drive, the Natural appetite for information selected for advantageous knowledge. From its (...) substrate of Mathematics, the knotted information processing loops determine emergent Physics and thence the evolution of super-emergent Life (biological and artificial intelligence). RGB-tricoloured information is processed in sequence in an Elemental feedback loop (R), then an Operational feedback loop (G), then a Structural feedback loop (B) and back to an Elemental feedback loop (R), and so on around the trefoil in deep learning macrocycles. It is postulated that hierarchical information correspondence from Mathematics through Physics to Life is mapped and conserved within each colour. The substrate of Mathematics has RGB-tricoloured feedback loops which are respectively Algebra (R), Algorithms (G) and Geometry (B). In Mathematics, the trefoil macrocycle is Algebraic Algorithmic Geometry and its correlation system is a Tensor Neural Knot Network enabling Qutrit Entanglement. Emergent Physics has corresponding RGB-tricoloured feedback loops of Quantum Mechanics (R), Quantum Deep Learning (G) and Quantum Geometrodynamics(B). In Physics, the trefoil macrocycle is Quantum Intelligent Geometrodynamics and its correlation system is Quantum Darwinism. Super-emergent Life has corresponding RGB-tricoloured loops of Variation (R), Selection (G) and Heredity (B). In the evolution of Life, the trefoil macrocycle is Variational Selective Heredity and its correlation ecosystem is Darwin’s ecologically “Entangled Bank”. (shrink)

Over the last decade, the efforts towards unraveling the complex interplay between the brain, body, and environment have set a promising line of research that utilizes neuroscience to study human performance in natural work contexts such as aviation. Thus, a new discipline called neuroergonomics is holding the promise of studying the neural mechanisms underlying human performance in pursuit of both theoretical and practical insights. In this work, we utilized a neuroergonomic approach by combining insights from ecological psychology and embodied (...) cognition to study flight expertise. Specifically, we focused on the Mirror Neuron system as a key correlate for understanding the interaction between an individual and the environment, suggesting that it can be used to index changes in the coupling of perception-action associated with skill development.In this study, we measured the EEG mu suppression as a proxy of the Mirror Neuron system in experts (pilots) and novices while performing a distance estimation task in a landing scenario. To survey the specificity of this measure, we considered central, parietal and occipital electrode pools and analyzed alpha (8-13 Hz) and beta (18-25 Hz) rhythm bands. We hypothesized that in experts vs. novices, specific neural sensorimotor brain activity would underpin the connection between perception and action in an in-flight context. Preliminary results indicate that alpha and beta suppression was area-specific irrespective of groups, present in the central electrodes placed over the motor areas. Group analysis revealed that specifically alpha mu rhythm, but not beta, was significantly more suppressed in pilots vs. novices. Complementing these findings we found a trend in which the strength of mu suppression increased with the sense of presence experienced by the pilots. Such sensorimotor activation is in line with the idea that for a pilot, a distance judgment is intimately associated with the function of landing. This reflects the ability to use optical invariants to see the world in terms of the capabilities of the aircraft (e.g., reachability and glide angle).These preliminary findings support the role of embodied simulation mechanisms in visual perception and add important insights into a practical understanding of flight expertise, suggesting sensorimotor mechanisms as potential neuro-markers. (shrink)

Abstract:This essay excavates the “spherical” and “global” ontological optics that have emerged from Martin Heidegger's thought considered in the context of the whole earth image and global climate change, focusing on the work of Timothy Ingold and Timothy Morton. Probing the boundaries of Morton's perspective in particular, I show how his global vision of Being ultimately reinscribes a fundamentally anthropocentric position in which the human “interior” is privileged and universalized while the inhuman “exterior” is either violently incorporated or altogether (...) rejected. I then propose an alternative vision of Being, one which avows a planetary optics while simultaneously emphasizing the unseen and unknown roiling beyond the boundaries of both spherical and global perspectives. I conclude by suggesting that this alternative vision can begin to be cultivated through attending to the works of Georges Bataille, whom a growing host of contemporary theorists have begun to identify as a resource for an ecological perspective that negotiates both the articulation and the transgression of the ontological and perspectival limits that separate the anthropocentric interior and the inhuman exterior. Bataille's exorbitant vision of Being sublates the dialectic of spherical and global perspectives, joining a consciousness of the limits of earth-bound human seeing-being to the ecstatic experience of a dynamic planet in the midst of an unfathomable cosmos. (shrink)

A timely, well-grounded analysis that reveals an inconvenient truth: we can't save capitalism and save the planet.

This is a book about how we see: the environment around us (its surfaces, their layout, and their colors and textures); where we are in the environment; whether or not we are moving and, if we are, where we are going; what things are good for; how to do things (to thread a needle or drive an automobile); or why things look as they do.The basic assumption is that vision depends on the eye which is connected to the brain. The (...) author suggests that natural vision depends on the eyes in the head on a body supported by the ground, the brain being only the central organ of a complete visual system. When no constraints are put on the visual system, people look around, walk up to something interesting and move around it so as to see it from all sides, and go from one vista to another. That is natural vision—and what this book is about. (shrink)

I argue that 'deep' ecology (as exemplified by the work of Arnie Naess) involves three inter-related commitments: (1) to an ethics of nature or axiological anti-humanism in which natural entities, processes or systems can possess intrinsic value independently of human beings; (2) a metaphysical naturalism or anti-humanism in which human beings are themselves conceptualized as natural products; (3) a transformative aspect. Although (3) is sometimes cast in personal or psychological terms, I think the idea can be given a properly philosophical (...) reconstruction along the lines of a kind of Ideologiekritik. I give the examples of Heidegger and Adorno to show how deeply our understanding of nature has been corrupted, and hence the depth of conceptual transformation required correctly to conceive nature. But both these thinkers simultaneously demonstrate a hostility to metaphysical naturalism and therefore have ultimately limited value for deep ecology. I then outline three possible relations of axiological to metaphysical commitments: (a) the abandonment of naturalism about values; (b) a projective or transcendentally idealist account of values; (c) an account of values as themselves lodged within the operation of natural systems. My reconstruction of the Ideologiekritiker shows them belonging to (b). So that if deep ecology is to avoid (a), it must embrace (c). Deleuze is much touted by environmental philosophers as contributing to (c). I argue that this is correct, but that the axiological commitments Deleuze manifests in his account of nature are ultimately quite different from those to which deep ecologists appear sympathetic. (shrink)

This essay develops a concept of curiotization, through which people are reduced to a curio for the fascination of others. I argue that trans people as they have appeared in media, philosophy, and narratives of history are curiotized as forever fascinating, new, titillating, and controversial. In contrast to the narrative of momentous trans progress in the mid-2010s, I point out that frameworks such as the "Transgender Tipping Point" worked to position its "trans moment" as unprecedented and always on the threshold (...) of arrival. To work through a specific example, I point to decades of renewed fascination over trans women being capable of breastfeeding and the long history of trans fascination in popular music. I conclude by emphasizing the obscured world-historical presence of transsexuality as it coincides with the history of pharmaceuticals, hormone technologies, and birth control. In contrast to a "goldfish memory optics" through which trans people become eternally new, fascinating, and debatable, I stress the importance of restoring the complexity of "trans" and its histories back into an understanding of the present. (shrink)

Minkowski geometry is axiomatized in terms of the asymmetric binary relation of optical connectibility, using ten first-order axioms and the second-order continuity axiom. An axiom system in terms of the symmetric binary optical connection relation is also presented. The present development is much simpler than the corresponding work of Robb, upon which it is modeled.

Cognitive ecology is the study of cognitive phenomena in context. In particular, it points to the web of mutual dependence among the elements of a cognitive ecosystem. At least three fields were taking a deeply ecological approach to cognition 30 years ago: Gibson’s ecological psychology, Bateson’s ecology of mind, and Soviet cultural-historical activity theory. The ideas developed in those projects have now found a place in modern views of embodied, situated, distributed cognition. As cognitive theory continues to shift (...) from units of analysis defined by inherent properties of the elements to units defined in terms of dynamic patterns of correlation across elements, the study of cognitive ecosystems will become an increasingly important part of cognitive science. (shrink)

In this article, I examine the relation between Bateson and Guattari’s ecological thoughts: two thinkers whose ecological ideas at first sight have a lot in common. In order to show the difference between the thoughts of both thinkers, I will take my clue from Guattari’s remark that he parts ways with Bateson on the role of context. Explaining the role of context in both authors will allow me to show how Guattari’s thought implies both an endorsement and a (...) critique of cybernetics, and, specifically, promoting a machinic rather than cybernetic ecology. I will conclude by indicating what is at stake in this distinction. (shrink)

Ecological psychology is one of the most influential theories of perception in the embodied, anti-representational, and situated cognitive sciences. However, radical enactivists claim that Gibsonians tend to describe ecological information and its ‘pick up’ in ways that make ecological psychology close to representational theories of perception and cognition. Motivated by worries about the tenability of classical views of informational content and its processing, these authors claim that ecological psychology needs to be “RECtified” so as to explicitly (...) resist representational readings. In this paper, we argue against this call for RECtification. To do so, we offer a detailed analysis of the notion of perceptual information and other related notions such as specificity and meaning, as they are presented in the specialized ecological literature. We defend that these notions, if properly understood, remain free of any representational commitment. Ecological psychology, we conclude, does not need to be RECtified. (shrink)

_ Source: _Volume 29, Issue 1, pp 86 - 102 The aim of this paper is to give an overview of the place that Hobbes assigns to optics in the context of his classification of sciences and disciplinary boundaries. To do this, I will begin with an account of Hobbes’s conception of philosophy or science, and particularly his distinction between true and hypothetical knowledge. I will also show that in his demarcation between mathematics or geometry and natural philosophy Hobbes (...) was influenced by Galileo’s _Dialogue_. I then analyse the consequences of this distinction for optics, and conclude by clarifying its status among the scientific disciplines. (shrink)

Significantly, Berkeley, in his Essay Towards a New Theory of Vision, leveled a sustained attack on just this geometrical theory of distance perception. At first glance it may seem, as it did to Berkeley, that Descartes’ geometrical theory is produced by a simple error: namely, by the idea that a physiological optics provides an adequate description of the psychological processes of judging distances. In truth, this is the weakest of Berkeley’s objections to Descartes’ theory. Obviously we do not see (...) the angles and lines of convergence when we focus on a distant object, nor are we aware of having used any geometrical rules in judging distance. And Descartes never claimed this. (shrink)

The author argues that all forms of life are interconnected and that no being, construct, or object can exist independently from the ecological entanglement, nor does "nature" exist as an entity separate from the uglier or more synthetic elements of life. Realizing this interconnectedness is what the author calls the ecological thought. He investigates the philosophical, political, and aesthetic implications of this interconnectedness.

Arguing that ecological thinking can animate an epistemology capable of addressing feminist, multicultural, and other post-colonial concerns, this book critiques the instrumental rationality, hyperbolized autonomy, abstract individualism, and exploitation of people and places that western epistemologies of mastery have legitimated. It proposes a politics of epistemic location, sensitive to the interplay of particularity and diversity, and focused on responsible epistemic practices. Starting from an epistemological approach implicit in Rachel Carson’s scientific projects, the book draws, constructively and critically, on (...) class='Hi'>ecological theory and practice, on (post-Quinean) naturalized epistemology, and on feminist and post-colonial theory. Analyzing extended examples from developmental psychology, from medicine and law, and from circumstances where vulnerability, credibility, and public trust are at issue, the argument addresses the constitutive part played by an instituted social imaginary in shaping and regulating human lives. The practices and examples discussed invoke the responsibility requirements central to this text’s larger purpose of imagining, crafting, articulating a creative, innovative, instituting social imaginary, committed to interrogating entrenched hierarchical social structures, en route to enacting principles of ideal cohabitation. (shrink)

Ecological Psychology and Enactivism both challenge representationist cognitive science, but the two approaches have only begun to engage in dialogue. Further conceptual clarification is required in which differences are as important as common ground. This paper enters the dialogue by focusing on important differences. After a brief account of the parallel histories of Ecological Psychology and Enactivism, we cover incompatibility between them regarding their theories of sensation and perception. First, we show how and why in ecological theory (...) perception is, crucially, not based on sensation. We elucidate this idea by examining the biological roots of work in the two fields, concentrating on Gibson and Varela and Maturana. We expound an ecological critique of any sensation-based approach to perception by detailing two topics: classic retinal image theories and perception in single-celled organisms. The second main point emphasizes the importance of the idea of organism-environment mutuality and its difference from structural coupling of sensations and motor behavior. We point out how ecological - phenomenological methods of inquiry grow out of mutualism and compare Gibson’s idea of visual kinesthesis to Merleau-Ponty’s idea of the lived body. Third, we conclude that Ecological Psychology and varieties of Enactivism are laying down different paths to pursue related goals. Thus, convergence of Ecological Psychology and Enactivism is not possible given their conflicting assumptions, but cross-fertilization is possible and desirable. (shrink)

Seventeenth-century optics naturalizes the eye while estranging the mind from objects. A mere screen, on which rests a blurry array of light stains, the eye no longer furnishes the observer with genuine re-presentations of visible objects. The intellect is thus compelled to decipher flat images of no inherent epistemic value, accidental effects of a purely causal process, as vague, reversed reflections of wholly independent objects. Reflecting on and trespassing the boundaries between natural and artificial, orderly and disorderly, this optical (...) paradox is a Baroque phenomenon; and it is the origin of Descartes’ celebrated doubt---whether we know anything at all. (shrink)

Value claims about ecological entities, their functionality, and properties take center stage in so-called “ecological” ethical and aesthetic theories. For example, the claim that the biodiversity in an old-growth forest imbues it with “value in and for itself” is an explicit value claim about an ecological property. And the claim that one can study “the aesthetics of nature, including natural objects...such as ecosystems” presupposes that natural instances of a type of ecological entity exist and can be (...) regarded as more or less aesthetically valuable. My discussion below will bear wide implications for how claims like... (shrink)

Der Wandel der kulturellen Verhältnisse führt zu einer Zuspitzung des Verhältnisses von Gesellschaft und Rechtssystem. In diesem Prozess gestaltet New Political Ecology (NPE) Umwelt und Rechtssystem und ist zugleich evolutiv ausgerichtet. NPE erfährt Evolution in der Zeit als Überfluss und in eigenartiger Vernetzung als knappes Gut. Diese Verbindung basiert auf Zusammenhängen, die bisher noch nicht systematisch bearbeitet worden sind. Dabei geht es ganz wesentlich auch um das Verhältnis von Staat und moderner Risikogesellschaft. Wissenschaftlicher Fortschritt erweist sich vor diesem Hintergrund selbst (...) als ein evolutiver Prozess. (shrink)

How does the complex nature of ecological systems affect ecologists' ability to study them? This Element argues that ecological systems are complex in a rather special way: they are causally heterogeneous. The author presents an updated philosophical account with an optimistic outlook of the methods and status of ecological research.

Leonardo's drawings of optical machinery have been used as evidence for the claim that Leonardo built machines to make concave mirrors with which he could project images. This paper argues that Leonardo's drawings cannot be used as evidence for this claim. It will be shown that Leonardo used the drawings to communicate with his patrons and craftsmen, to experiment on paper, to record trials with models, and to think about 'theoretical' problems in optics. At both the theoretical and the (...) practical level, Leonardo was only concerned with the burning properties of concave mirrors, not with their imaging properties. The paper will conclude that the drawings of optical machinery allowed Leonardo to differentiate himself from the ordinary mirror-makers in his workshop. The same drawings, however, also forced him to remain within the conceptual framework of perspectivist optics. (shrink)