This volume of specially written essays by leading philosophers offers to set the agenda for the philosophy of depiction.

ABSTRACT: Quassim Cassam (1997) accepts the standard account of solidity, according to which, if S feels x as solid, then S feels x as an imediment to his movement. Recently, Martin Fricke and Paul Snowdon (2003) have presented a battery of counter-examples designed to show that S may feel x as solid and as exerting a pressure that supports or facilitates his movement. In this note, I defend the standard account against Fricke and Snowdon’s attack. Integral to this defense is (...) a distinction between two (sometimes overlapping) ways in which S may feel x as an impediment to his movement: as an influence on a movement state of S, or as an obstacle to the achievement of a goal that requires movement. After demonstrating the primacy of the former sense, I argue that Fricke and Snowdon’s counter-examples only undermine a version of the standard account that glosses ‘impediment’ as an obstacle to the achievement of a goal that requires movement. (shrink)

The article is an overview of some central philosophical problems associated with perception. It discusses what distinguishes perception from other sensory capacities and from conception. It discusses anti-individualism, a view according to which the nature of a perceptual state is dependent not just causally but for its identity or 'essence' on relations to a normal environment in which systems containing that state were formed. It discusses different views about epistemic warrant. By emphasising the deep ways in which human and animal (...) perceptual systems, especially visual systems, are similar, it criticises a dominant view of the last century, in both philosophy and large parts of psychology, according to which a range of sophisticated supplementary abilities have to be learned before a child can perceive objective features of the physical world. (shrink)

Some issues heavily debated in perception sciences are presented: the explanatory gap and the experience measurement problem. The experimental phenomenology is said to provide substantive contribution to settle controversy over the phenome- nological adequacy of perception theory and models. An interpretation of experi- mental phenomenology as explanation of the perceptual manifold, and definition of relation varieties to eventually map onto other perception sciences’ domains is sketched.

I distinguish between two kinds of sensorimotor expectations: agent- and object-active ones. Alva Noë's answer to the problem of how perception acquires volumetric content illicitly privileges agent-active expectations over object-active expectations, though the two are explanatorily on a par. Considerations which Noë draws upon concerning how organisms may ‘off-load’ internal processes onto the environment do not support his view that volumetric content depends on our embodiment; rather, they support a view of experience which is restrictive of the body's role in (...) perception. My objections undercut central arguments which Noë gives for his brand of enactivism. (shrink)

the philosophical regions. I will identify three: three obvious zones of The first and third of these kinds of problem are studied almost tectonic conflict within contemporary cognitive approaches to exclusively within departments of philosophy. Applied to perception.

Imagine, if you will, that the entire community of investigators interested in the problems of perception all lived together in the same town. Some continual shuffling of neighbors would be inevitable, and there might be occasional episodes of mass relocation and energetic bulldozing, but after a while the residents would probably settle down and find themselves living in districts defined roughly by disciplinary boundaries. The experimental psychologists would occupy the newer part of town, laced with superhighways, workshops and factories, machines (...) and measuring instruments, computers and overhead display units. But the town also has an Old City, marked by the complete absence of highways and factories, where the streets are lined with ancient hovels. There are, to be sure, some colossal palaces and museums in this part of town, breathtaking monuments to the grandeur of past centuries, but the current residents lack the inclination to construct such buildings, and many of the old palaces have been boarded up and condemned as unfit for human habitation. The somewhat scraggly and irascible inhabitants of this district have few viable economic enterprises, and no free markets, but rather organize themselves in units resembling nothing so much as medieval guilds. Congratulations. You have stumbled into the neighborhood where the philosophers live. (shrink)

Marr's computational theory of stereopsis is shown to imply that human vision employs a system of representation which has all the properties of a number system. Claims for an internal number system and for neural computation should be taken literally. I show how these ideas withstand various skeptical attacks, and analyze the requirements for describing neural operations as computations. Neural encoding of numerals is shown to be distinct from our ability to measure visual physiology. The constructs in Marr's theory are (...) neither propositional nor pictorial, and provide a counter example to many commonly held dichotomies concerning mental representation. (shrink)

A series of unnoticeably small changes in an observable property may add up to a noticeable change. Crispin Wright has used this fact to prove that perceptual indiscriminability is a non-transitive relation. Delia Graff has recently argued that there is a 'tension' between Wright's assumptions. But Graff has misunderstood one of these, that 'phenomenal continua' are possible; and the other, that our powers of discrimination are finite, is sound. If the first assumption is properly understood, it is not in tension (...) with but is actually implied by the second, given a plausible physical assumption. (shrink)

Hallucinations occur in a wide range of organic and psychological disorders, as well as in a small percentage of the normal population According to usual definitions in psychology and psychiatry, hallucinations are sensory experiences which present things that are not there, but are nonetheless accompanied by a powerful sense of reality. As Richard Bentall puts it, “the illusion of reality ... is the sine qua non of all hallucinatory experiences” (Bentall 1990: 82). The aim of this paper is to find (...) out what lends an experience ‘a sense of reality’: what features are required for an experience to feel ‘real’, in the relevant sense? I will investigate the claim that phenomenological features are largely responsible for a sense of reality, and will find this claim wanting. My suggestion is that a sense of reality is created and sustained by the larger nexus of the subject's beliefs. (shrink)

In the first monograph in this exciting area since then, William Fish develops a comprehensive disjunctive theory, incorporating detailed accounts of the three ...

The concept of second nature plays a central role in McDowell's project of reconciling thought's external constraint with its spontaneity or autonomy: our conceptual capacities are natural in the sense that they are fully integrated into the natural world, but they are a second nature to us since they are not reducible to elements that are intelligible apart from those conceptual capacities. Rather than offering a theory of second nature and an account of how we acquire one, McDowell suggests that (...) Aristotle's account of ethical character formation as the acquisition of a second nature serves as a model that can reassure us that thought's autonomy does not threaten its naturalness. However, far from providing such reassurance, the Aristotelian model of second nature actually generates an anxiety about how the acquisition of such autonomous conceptual abilities could be possible. (shrink)

John Foster addresses the question: what is it to perceive a physical object? He rejects the view that we perceive such objects directly, and argues for a new version of the traditional empiricist account, which locates the immediate objects of perception in the mind. But this account seems to imply that we do not perceive physical objects at all. Foster offers a surprising solution, which involves embracing an idealist view of the physical world.

The sensorimotor theory (Noe¨, 2004, in press) discusses a special instance of lack of perceptual experience despite no sensory impairment. The phenomenon dubbed “experiential blindness” is cited as evidence for a constitutive relation between sensorimotor skills and perceptual experience. Recently it has been objected (Adams & Aizawa, 2008; Aizawa, 2007) that the cases described by Noe¨ as experiential blindness are cases of pure sensory deficit. This paper argues that while the objections bring out limitations of Noe¨’s sensorimotor theory they do (...) not do enough to challenge a robust perception–action interdependence claim. There are genuine cases of experiential blindness and these are better explained by the hypothesis of the interdependence of perception and action rather than by a passive vision approach. The cases provide support for a strong thesis of embodied cognition where ongoing sensorimotor dynamics non-trivially constrain perceptual content. (shrink)

Much contemporary discussion of perceptual experience can be traced to two observations. The first is that perception seems to put us in direct contact with the world around us: when perception is successful, we come to recognize— immediately—that certain objects have certain properties. The second is that perceptual experience may fail to provide such knowledge: when we fall prey to illusion or hallucination, the way things appear may differ radically from the way things actually are. For much of the twentieth (...) century, many of the most important discussions of perceptual experience could be fruitfully understood as responses to this pair of observations. (shrink)

It is clear that visual imagery is somehow significantly visual. Some theorists, like Kosslyn, claim that the visual nature of visualisations derives from features of the neural processes which underlie those episodes. Pylyshyn claims, however, that it may merely reflect special features of the contents which we grasp when we visualise things. This paper discusses and rejects Pylyshyn's own attempts to identify the respects in which the contents of visualisations are notably visual. It then offers a novel and very different (...) account of what is distinctively sensory about the contents of sensory images. The paper's alternative account is used in explaining various pieces of phenomenological and behavioural data concerning visualisation. Finally, it is tentatively suggested that the proposed account of the contents of sensory images may also shed light upon some of the neurological data involving visualisation and sensory imagery more generally. (shrink)

Perky's famous experiments have been taken to show that at the limit perceiving and imagining (more precisely, seeing and visualising into seen space) do not differ phenomenologically. One way to block this result is to argue that the task Perky set her subjects raised the threshold for perception, so that they were not perceiving the stimuli she showed them. I argue that even if this strategy fails, Perky's cases cannot prove the conclusion folk have wanted to draw. She showed her (...) subjects, not the objects they went on to visualise, but crude pictures of such things. What they confused with visualising into seen space was thus, not perceptual consciousness of stimuli, but pictorial consciousness. Once we're clear about the nature of the latter, we can see that Perky's results reveal nothing very surprising at all. -/- This is a longer version of a paper to appear in 'Analysis' (July 2012). (shrink)

Perky's famous experiments have been taken to show that at the limit perceiving and imagining (more precisely, seeing and visualising into seen space) do not differ phenomenologically. One way to block this result is to argue that the task Perky set her subjects raised the threshold for perception, so that they were not perceiving the stimuli she showed them. I argue that even if this strategy fails, Perky's cases cannot prove the conclusion folk have wanted to draw. She showed her (...) subjects, not the objects they went on to visualise, but crude pictures of such things. What they confused with visualising into seen space was thus, not perceptual consciousness of stimuli, but pictorial consciousness. Once we're clear about the nature of the latter, we can see that Perky's results reveal nothing very surprising at all. -/- This is a longer version of a paper to appear in 'Analysis' (July 2012). (shrink)

This paper defends two theses about sensory objects. The more general thesis is that directly sensed objects are those delivered by sub-personal processes. It is shown how this thesis runs counter to perceptual atomism, the view that wholes are always sensed indirectly, through their parts. The more specific thesis is that while the direct objects of audition are all composed of sounds, these direct objects are not all sounds—here, a composite auditory object is a temporal sequence of sounds (whereas a (...) composite visual object is a spatial composite). Many composite objects are directly heard in the sense just mentioned. There is a great variety of such composite auditory objects—melodies, harmonies, sequences of phonemes, individual voices, meaning-carrying sounds, and so on. This diversity of auditory objects has an important application to aesthetics. Perceivers do not naturally or easily attend simultaneously to auditory objects that overlap in time. Yet, aesthetic appreciation depends on such an allocation of attention to overlapping objects. (shrink)

An outline of Seeing, Doing, and Knowing (Oxford, 2005).

Argues that biological organs, including mental capacities, should be identified by homology (not function).

Seeing, Doing, and Knowing is an original and comprehensive philosophical treatment of sense perception as it is currently investigated by cognitive neuroscientists. Its central theme is the task-oriented specialization of sensory systems across the biological domain; these systems coevolve with an organism's learning and action systems, providing the latter with classifications of external objects in terms of sensory categories purpose--built for their need. On the basis of this central idea, Matthen presents novel theories of perceptual similarity, content, and realism. His (...) work will be a stimulating resource for a wide range of scholars and students across philosophy and psychology. (shrink)

Shepard's approach is regarded as an attempt to rescue, within an evolutionary perspective, an empiricist theory of mind. Contrary to this, I argue that the structure of perceptual representations is essentially co-determined by internal aspects and cannot be understood if we confine our attention to the physical side of perception, however appropriately we have chosen our vocabulary for describing the external world. Furthermore, I argue that Kubovy and Epstein's “more modest interpretation” of Shepard's ideas on motion perception is based on (...) unjustified assumptions. [Kubovy & Epstein; Shepard]. (shrink)

In previous work I urged that the perceptual experience we rational animals enjoy is informed by capacities that belong to our rationality, and - in passing - that something similar holds for our intentional action. In his Presidential Address, Hubert Dreyfus argued that I thereby embraced a myth, "the Myth of the Mental". According to Dreyfus, I cannot accommodate the phenomenology of unreflective bodily coping, and its importance as a background for the conceptual capacities exercised in reflective intellectual activity. My (...) paper responds to this accusation. Dreyfus misreads my invocation of Aristotle, and is thereby led to suppose, wrongly, that I conceive rationality as detached, brought to bear on practical predicaments from a standpoint other than one of immersion in them. I urge that even unreflective bodily coping, on the part of rational animals, is informed by their rationality. Dreyfus mentions Heidegger's distinction, which is picked up by Gadamer, between being oriented towards the world and merely inhabiting an environment. But he sets it aside, whereas it is crucial for the issue between us. Engaged bodily coping involves responsiveness to affordances, and responsiveness to affordances on the part of rational animals belongs to their relation to the world. I explain how the idea that conceptual capacities are actualized in our perceptual experience is connected with the thought that our perceptual experience opens us to the world. Finally, I suggest that the real myth in this area is the conception of rationality underlying Dreyfus's resistance to my picture. (shrink)

Much as we would like to conceive empirical thought as rationally grounded in experience, pitfalls await anyone who tries to articulate this position, and ...

This book focuses on Russell's work from 1905 to 1919, during which period Russell attempted a reductionist analysis of empirical knowledge.

The consensus in contemporary philosophy of mind is that how a perceptual experience represents the world to be is built into its sensory phenomenology. I defend an opposing view which I call ‘moderate separatism’, that an experience's sensory phenomenology does not determine how it represents the world to be. I argue for moderate separatism by pointing to two ordinary experiences which instantiate the same sensory phenomenology but differ with regard to their intentional content. Two experiences of an object reflected in (...) a mirror can possess the same spatial phenomenology while representing that object to occupy different spatial locations. So, contrary to the current consensus, the representation of spatial location is not fixed by an experience's sensory phenomenology. (shrink)

It is often assumed that there is a perceptual conflict in looking at a picture since one sees both a two-dimensional surface and a three-dimensional scene simultaneously. In this paper, I argue that it is a mistake to think that looking at pictures requires the visual system to perform the special task of reconciling inconsistent impressions of space, or competing information from different depth cues. To the contrary, I suggest that there are good reasons to think that the perception of (...) depth in pictures is achieved in much the same way as is the perception of depth in any ordinary case. (shrink)

The views are original, and there is substantive engagement among contributors. This collection will stimulate future research in this area.

To appear in the Cambridge Handbook to Cognitive Science, eds. Ramsey and Frankish.

Despite its admirable bottom-up methodology, Roy Sorensen's Seeing Dark Things (OUP, 2008) raises difficult theoretical questions concerning the metaphysics and perception of absences. Metaphysical difficulties include how to individuate, count, locate, and classify absences, and what determines their features. Perceptual difficulties include how to distinguish experiences of absences and presences, especially when nonveridical, and what subjects contribute to perceptual experience according to Sorensen's causal theory. In addition to articulating these difficulties, this paper also presents and explores, on Sorensen's terms, an (...) alternative account of silence. (shrink)

Recent work on non-visual modalities aims to translate, extend, revise, or unify claims about perception beyond vision. This paper presents central lessons drawn from attention to hearing, sounds, and multimodality. It focuses on auditory awareness and its objects, and it advances more general lessons for perceptual theorizing that emerge from thinking about sounds and audition. The paper argues that sounds and audition no better support the privacy of perception’s objects than does vision; that perceptual objects are more diverse than an (...) exclusively visual perspective suggests; and that multimodality is rampant. In doing so, it presents an account according to which audition affords awareness as of not just sounds, but also environmental happenings beyond sounds. (shrink)

Provides the theoretical and psychological framework to the philosophy of sounds and audition. I address auditory scene analysis, spatial hearing, the audible qualities, and cross-modal interactions.

... ISBN0199215928 ... -/- Abstract: Vision dominates philosophical thinking about perception, and theorizing about experience in cognitive science traditionally has focused on a visual model. This book presents a systematic treatment of sounds and auditory experience. It demonstrates how thinking about audition and appreciating the relationships among multiple sense modalities enriches our understanding of perception. It articulates the central questions that comprise the philosophy of sound, and proposes a novel theory of sounds and their perception. Against the widely accepted philosophical (...) view that sounds are among the secondary or sensible qualities, and against the scientific view that sounds are waves that propagate through a medium such as air or water, the book argues that sounds are events in which objects or interacting bodies disturb a surrounding medium. This does not imply that sounds propagate through a medium, such as air or water. Rather, sounds are events that take place in one's environment at or near their sources. This account captures the way in which sounds essentially are creatures of time and situates sounds in the world. Sounds are not ethereal, mysterious entities. It also provides a powerful account of echoes, interference, reverberation, Doppler effects, and perceptual constancies that surpasses the explanatory richness of alternative theories. Investigating sounds and audition demonstrates that considering other sense modalities teaches what we could not otherwise learn from thinking exclusively about the visual. This book concludes by arguing that a surprising class of cross-modal perceptual illusions demonstrates that the perceptual modalities cannot be completely understood in isolation, and that a visuocentric model for theorizing about perception — according to which perceptual modalities are discrete modes of experience and autonomous domains of philosophical and scientific inquiry — ought to be abandoned. -/- . (shrink)

PREFACE In Berkeley's language, the question from which this book arises is this one: Is what we immediately perceive by the senses something that depends ...

This ambitious work aims to shed new light on the relations between Husserlian phenomenology and the present-day efforts toward a scientific theory of ...

In Mind and World and subsequent writings up to an essay first published in 2008 entitled “Avoiding the Myth of the Given”,1 John McDowell had insisted not only on the conceptuality of what is often discussed as “perceptual content” but also on the propositionality of that content. Many might find this puzzling. At the most intuitive level, one might think of the “content” of perception, what one perceives, as things— things with particular properties, and things arranged in particular relations. I (...) look around my room and see my desk, see its colour, the variety of things on it, and so on. But, following the tractarian Wittgenstein, in Mind and World McDowell portrays the world to which one is open in perceptual experience not as a world of “things” but as a world of “facts”, and that facts rather than things is what one sees can strike one as counterintuitive. True, I can think of myself as seeing that my desk has a particular color, that it stands between the bookshelf and the window, but that I can see that such facts “obtain” (in the rather odd locution of philosophy) can seem to be, in some sense, secondary to or explainable by the fact that I see the desk. And I can see the desk only because I am in my study facing it with an unimpeded view.2 Proximity to and having an unimpeded view of as conditions for seeing seem to be an important part of what we mean by “seeing”, and “facts” can seem neither to be the sorts of things one can be close to or far from, nor things one can have unimpeded or impeded views of. (shrink)

In this paper I argue that olfactory experience, like visual experience, is exteroceptive: it seems to one that odours, when one smells them, are external to the body, as it seems to one that objects are external to the body when one sees them. Where the sense of smell has been discussed by philosophers, it has often been supposed to be non-exteroceptive. The strangeness of this philosophical orthodoxy makes it natural to ask what would lead to its widespread acceptance. I (...) argue that philosophers have been misled by a visuocentric model of what exteroceptivity involves. Since olfaction lacks the spatial features that make vision exteroceptive the conclusion that olfaction is nonexteroceptive can appear quite compelling, particularly in the absence of an alternative model of exteroceptivity appropriate to olfaction. I offer a model according to which odours seem to be external to the body because they seem to be brought into the nose from without by sniffing and breathing through the nostrils. I argue that some natural-seeming objections to this model rely on substantive assumptions about how the senses are distinguished from one another, and how perceptual experience is put together out of its modality-specific parts, that require defence. (shrink)

Abstract: In this paper I offer an account of a particular variety of perception of absence, namely, visual perception of empty space. In so doing, I aim to make explicit the role that seeing empty space has, implicitly, in Mike Martin's account of the visual field. I suggest we should make sense of the claim that vision has a field—in Martin's sense—in terms of our being aware of its limitations or boundaries. I argue that the limits of the visual field (...) are our own sensory limitations, and that we are aware of them as such. Seeing empty space, I argue, involves a structural feature of experience that constitutes our awareness of our visual sensory limitations, and thus, in virtue of which vision has a field. (shrink)

McDowell argues that the shortcomings of recent theories of experience are the product of the modern scientistic conception of nature. Reconceive nature, he suggests, and we can explain how perceptual experience can be an external constraint on thought that, moreover, has conceptual import. In this article I argue that McDowell’s project is unsuccessful. Those wishing to construct normative theories, including theories of perceptual experience, face the normative trilemma—they must choose one of three styles of theory, each of which exhibits a (...) distinctive weakness. If we view McDowell’s approach in light of this choice, we see that he cannot adequately explain the link between experience and the world itself. I conclude that the real problem with theories of experience flows not from scientistic naturalism, but rather from the inconsistent demands we place on normative theories in general.McDowell soutient que les défauts des théories récentes sur l’expérience sont engendrés par la position scientifique moderne sur la nature. En reconcevant la nature, suggère-t-il, on est en mesure d’expliquer comment l’expérience sensorielle peut être une contrainte extérieure sur la pensée, contrainte qui joue, de plus, un rôle conceptuel. Je soutiens dans cet article que le projet de McDowell se solde par un échec. Ceux qui souhaitent élaborer des théories normatives, y compris des théories sur l’expérience sensorielle, font face au trilemme normatif — ils doivent choisir un type de théorie parmi trois types qui trahissent tous une faiblesse particulière. Si l’on envisage la démarche de McDowell dans la perspective de ce choix, on s’aperçoit qu’il ne peut expliquer de manière satisfaisante le lien entre l’expérience et le monde lui-même. J’en conclus que le véritable problème des théories sur l’expérience ne découle pas du naturalisme scientifique, mais plutôt des exigences incohérentes auxquelleson soumet les théories normatives en général. (shrink)

After outlining an enactive account of fact perception, I consider J. L. Austin's discussion of the argument from illusion. From it I draw the conclusion that when fact perception is primary the objects perceived are those involved in the fact. A consideration of Adelson's checkershadow illusion shows that properties as basic as luminance are perceived in the contexts of facts as well. I thus conclude that when facts are perceived they structure our perception of objects and properties. I then argue (...) that which facts are perceived is determined by contexts which are themselves determined by our interests. Here I appeal to Heidegger's views on everyday coping as a foundational form of intentional directedness. A discussion of Simons and Chabris’ gorilla experiment provides contemporary empirical support of the Heideggerian analysis. Finally, I argue that there cannot be context-free perception on the enactive account inasmuch as perception, qua action, is always permeated with the interests of the subject. (shrink)

After outlining an enactive account of fact perception, I consider J. L. Austin's discussion of the argument from illusion. From it I draw the conclusion that when fact perception is primary the objects perceived are those involved in the fact. A consideration of Adelson's checkershadow illusion shows that properties as basic as luminance are perceived in the contexts of facts as well. I thus conclude that when facts are perceived they structure our perception of objects and properties. I then argue (...) that which facts are perceived is determined by contexts which are themselves determined by our interests. Here I appeal to Heidegger's views on everyday coping as a foundational form of intentional directedness. A discussion of Simons and Chabris’ gorilla experiment provides contemporary empirical support of the Heideggerian analysis. Finally, I argue that there cannot be context-free perception on the enactive account inasmuch as perception, qua action, is always permeated with the interests of the subject. (shrink)

In this paper, I explore and defend the idea that we have epistemic responsibilities with respect to our visual searches, responsibilities that are far more fine-grained and interesting than the trivial responsibilities to keep our eyes open and “look hard”. In order to have such responsibilities, we must be able to exert fine-grained and interesting forms of control over our visual searches. I present both an intuitive case and an empirical case for thinking that we do, in fact, have such (...) forms of control over our visual searches. I then show how these forms of control can be used to aim the visual beliefs that result from our searches towards various epistemic goals. (shrink)

This text presents essays on the conceptual and theoretical problems in the study of vision.

In this paper I discuss several proposals for how to find out which contents visual experiences have, and I defend the method I.

The Problem of Perception offers two arguments against direct realism--one concerning illusion, and one concerning hallucination--that no current theory of ...

In this paper I show and discuss the relevance of Wittgenstein´s arguments as to the spatial nature of sight for recent issues in the philosophy of mind. The first, bearing upon the dimensionality of the manifolds at play in depiction, plays a critical role in Clark´s attempt to provide an independent account of qualia and of their differentiative properties. The second, pertaining to the properly spatial structure formed by the data of sight, is explicitly appealed to in the debate on (...) the realistic character of any genuinely spatial conceptual scheme. I argue that if Wittgenstein rightly assumes that the simultaneous presence of sensible places in vision is a key condition on objectivity, he fails however to warrant the allegedly realistic character of the conceptual scheme employed in his own search for a phenomenological description of the visual field. (shrink)

Modular architectures of the mind can vary both with respect to the strength of the notion of modularity and the scope of the modularity of mind. We propose a dilemma for modular architectures, no matter how they vary along these two dimensions. First, if a modular theory commits to the informational encapsulation of modules, then modules are on this account impenetrable. However, there are plausible cases of the cognitive penetrability of perception. And so any strongly modular theory of perception is (...) threatened. Second, many recent massive modularity theories weaken the strength of the notion of module, while broadening the scope of modularity. These theories do not require any robust informational encapsulation, and thus avoid the incompatibility with cognitive penetrability. However, the weakened commitment to informational encapsulation significantly weakens the explanatory force of the theory and, ultimately, is conceptually incompatible with the core of modularity. We conclude by proposing a non-modular, but explanatorily sufficient, notion of functionally independent system. (shrink)