Molyneux’s question is, very roughly, that of whether a blind person's prior acquaintance with shape properties by touch alone would suffice for visually identifying those properties, if her sight were restored. The question is at least in part an empirical one, and various scientific attempts have been made to answer it not only for sight and haptic touch but also for various other sensory modalities. This paper is not aimed at answering Molyneux’s original or related questions. Rather, our (...) aim here is to bring his question to bear on the nature of multisensory integration. In particular, we argue that variants on Molyneux's question spell trouble for a dominant view of multisensory integration and develop an alternative account that is immune to these problems. Finally, we show that the answer to Molyneux’s original question has interesting consequences for whether our alternative account is true of all cases of multisensory experience. (shrink)

Molyneux's Question, that is, “Suppose a man born blind, and now adult, and taught by his touch to distinguish between a cube and a sphere... and the blind man made to see: Quaere, whether by his sight, before he touched them, he could now distinguish, and tell, which is the globe, which the cube”, was discussed by many theorists in the 17th and 18th centuries, and has recently been addressed by contemporary philosophers interested in the nature, and identity (...) conditions, of perceptual concepts. My main concern in this paper is to argue – against Evans, Campbell, and a number of other contemporary philosophers – that a test of the sort Molyneux envisioned, at least if carefully designed and administered, can indeed be a crucial experiment for the claim that we deploy the same perceptual concepts when identifying shapes by sight and by touch. I will explore some implications of this argument for a theory of recognitional concepts. And I’ll try to trace out some unhappy consequences of various alternative views. (shrink)

What philosophical issue or issues does Molyneux’s question raise? I concentrate on two. First, are there any properties represented in both touch and vision? Second, for any such common perceptible, is it represented in the same way in each, so that the two senses support a single concept of that property? I show that there is space for a second issue here, describe its precise relations to Molyneux’s question, and argue for its philosophical significance. I close by arguing (...) that Gareth Evans conflated the two issues, and thereby provide further grounds for distinguishing them. (shrink)

More than 300 years ago, William Molyneux raised an important and puzzling question which still creates a lot of controversy. What is known as “Molyneux’s question“ was made famous by John Locke’s quote of Molyneux in the second edition of the Essay Concerning Human Understanding: “Suppose a Man born blind, and now adult, and taught by his touch to distinguish between a Cube, and a Sphere of the same metal, and nighly of the same bigness, so as to (...) tell, when he felt one and t’other, which is the Cube, which the Sphere. Suppose then the Cube and Sphere placed on a Table, and the Blind Man to be made to see. Quaere, Whether by his sight, before he touch’d them, he could now distinguish, and tell, which is the Globe, which the Cube.“ I argue for a positive answer to the question. (shrink)

If a man born blind were to gain his sight in later life would he be able to identify the objects he saw around him? Would he recognise a cube and a globe on the basis of his earlier tactile experiences alone? This was William Molyneux's famous question to John Locke and it was much discussed by English and French empiricists in the eighteenth century as part of the controversy over innatism and abstract ideas. Dr Morgan examines the (...) whole history of this debate: Locke's own (negative) answer to the question, the contributions of Berkeley, Condillac, Diderot and Voltaire and the factual accounts of early cataract operations and modern laboratory studies. He shows how this debate is involved in the development and eventual separation of philosophy and experimental psychology after the eighteenth century and considers why the original question is effectively still unanswered. This is one problem-area with its intricate cluster of connected conceptual and technical difficulties which suggests the need for some reunion or at least collaboration between the two subjects. (shrink)

Whatever the answer to Molyneux's question is, it is certainly not obvious that the answer is ‘yes’. In contrast, it seems clear that we should answer affirmatively a temporal variation on Molyneux's question, introduced by Gareth Evans. I offer a phenomenological explanation of this asymmetry in our responses to the two questions. This explanation appeals to the modality-specific spatial structure of perceptual experience and its amodal temporal structure. On this explanation, there are differences in the perception (...) of spatial properties in different modalities, but these differences do not stand in the way of the objectivity of perceptual experience. (shrink)

Molyneux addressed his question to Locke in two forms. The question that is most often discussed in the literature is the 1693 version–about whether a newly sighted man could distinguish a globe and a cube when they are presented to his sight alone. But in 1688, he asked whether this man could know which was the globe. While Locke and Molyneux probably thought this an unnecessary add-on, we argue that it changes the question. Locke had no account (...) of how one could know a contingent singular fact by sight or by vision. We argue that we know in these ways by using a process of active sensory exploration that employs the modality in question. A new form of Molyneux’s question emerges from this understanding of perceptual knowledge. While the variety of sensory exploration methods within and across modalities raises considerable difficulties for a positive answer, the original question, like the later version, can ultimately be answered only by empirical investigation. (shrink)

This chapter explores how our understanding of Molyneux’s question, and of the possibility of an experimental resolution to it, should be affected by recognizing the complexity that is involved in reidentifying shapes and other spatial properties across differing sensory manifestations of them. I will argue that while philosophers today usually treat the question as concerning ‘the relations between perceptions of shape in different sensory modalities’ (Campbell 1995, 301), in fact this is only part of the question’s real (...) interest, and that the answer to the question also turns on how shape is perceived within each of sight and touch individually. (shrink)

Molyneux’s Question, also known as Molyneux’s Problem, soon became a fulcrum for early research in the epistemology of concepts, challenging common intuitions about how our concepts originate, whether sensory features differentiate concepts, and how concepts are utilized in novel contexts. It was reprinted and discussed by a wide range of early modern philosophers, including Gottfried Leibniz, George Berkeley, and Adam Smith, and was perhaps the most important problem in the burgeoning discipline of psychology of the 18th Century. The (...) class='Hi'>question has since undergone various stages of development, both as a mental exercise and as an experimental paradigm, garnering a variety of both affirmative and negative replies in the next three centuries of debate and deliberation. (shrink)

After more than three centuries, Molyneux's question continues to challenge our understanding of cognition and perceptual systems. Locke, the original recipient of the question, approached it as a theoretical exercise relevant to long-standing philosophical issues, such as nativism, the possibility of common sensibles, and the empiricism-rationalism debate. However, philosophers were quick to adopt the experimentalist's stance as soon as they became aware of recoveries from congenital blindness through ophtalmic surgery. Such recoveries were widely reported to support empiricist (...) positions, suggesting that the question had found its empirical answer. Contrary to this common view, we argue that studies of patients recovering from early blindness through surgery cannot provide an answer. In fact, because of the very nature of such ophtalmological interventions it is impossible to test the question in the empirical conditions outlined by Molyneux. Thus we propose that Molyneux's question be treated as an early thought experiment of a specific kind. Although thought experiments of this kind cannot be turned into actual experimental conditions, they provide a conceptual restructuring of theories. Such restructuring in turn leads to new predictions that can then be tested by normal experiments. In accord with this interpretation, we show that Molyneux's question can be analyzed into a hierarchy of specific questions about vision in its phenomenal and sensory-motor components. Some of these questions do lead to actual experimental conditions that could be studied empirically. (shrink)

If the sight of cortically blind people were restored, could they visually recognize a cube or a sphere? This is Molyneux’s question. I argue that the answer to this question depends on the specificities of the mental setup of these cortically blind people. Some cortically blind people have (sometimes quite vivid) visual imagery. Others don’t. The answer to Molyneux’s question depends on whether the blind subjects have had visual imagery before their sight was restored. If they did, (...) the answer to Molyneux’s question is yes, if they didn’t, the answer is no. There is no generic answer to Molyneux’s question. (shrink)

I propose a reading of Berkeley's Essay towards a New Theory of Vision in which Molyneux-type questions are interpreted as thought experiments instead of arguments. First, I present the general argumentative strategy in the NTV, and provide grounds for the traditional reading. Second, I consider some roles of thought experiments, and classify Molyneux-type questions in the NTV as constructive conjectural thought experiments. Third, I argue that (i) there is no distinction between Weak and Strong Heterogeneity theses in the NTV; (ii) (...) that Strong Heterogeneity is the basis of Berkeley's theory; and (iii) that Molyneux-type questions act as illustrations of Strong Heterogeneity. (shrink)

The aim of this chapter is to shed new light on the question of what newly sighted subjects are capable of seeing on the basis of previous experience with mind- independent, external objects and their properties through touch alone. This question is also known as "Molyneux’s question." Much of the empirically driven debate surrounding this question has been centered on the nature of the representational content of the subjects' visual experiences. It has generally been assumed that (...) the meaning of "seeing" deployed in these disputes is more or less clear and unproblematic, and therefore requires no analysis or clarification. In this chapter, we wish to challenge this assumption. We argue that getting clear on the meaning of "seeing" is the only feasible way to determine whether the empirical attempts to answer Molyneux’s question accurately capture what newly sighted subjects are in fact capable of seeing. Specifically, we show that the dominant interpretations of the empirical results from a recent study (Held et al., 2011) fail to take into account that seeing can be not only purely visual but also epistemic in that it requires background knowledge (such as what an object with a particular viewpoint-independent shape looks like from a particular perspective). (shrink)

in Enrique Villanueva (ed.), Perception (Philosophical Issues vol. 7) (Atascadero: Ridgeview 1996), 301-318, with replies by Brian Loar and Kirk Ludwig.

Few topics in the philosophy of perception have received more attention than Molyneux’s question: would a person with congenital blindness, able to identify cubes and spheres by touch, immediately or even eventually identify these shapes by sight alone, if made to see? This special issue focuses on the new developments concerning the answers to this question, as well as on the new questions in the light of the results of the results from the sciences of the mind.

Amongst those who answered Molyneux’s question in the negative or at least not in the positive, George Berkeley is of particular interest because he argued for a very radical position. Most of his contribution to the discussion can be found in his Essay towards a New Theory of Vision. I will give an exposition of his view (2) and then move on to a critical discussion of this kind of view, - what one could call the “Berkeleian view” (3). (...) I think that the problems of what has become a standard negative answer to the question (mainly brought forward by empiricists) become very clear in Berkeley’s case and one can also learn a lot from this. (shrink)

In 1688 the Irish scientist and politician William Molyneux sent a letter to the philosopher John Locke. In it, he asked him a question: could someone who was born blind, and able to distinguish a globe and a cube by touch, be able to immediately distinguish and name these shapes by sight if given the ability to see? -/- The philosophical puzzle offered in Molyneux’s letter fascinated not only Locke, but major thinkers such as Leibniz, Berkeley, Diderot, Reid, and (...) numerous others including psychologists and cognitive scientists today. Does such a question represent a philosophical puzzle or a problem that can be solved by experimental tests? Can vision be fully restored after blindness? What is the relation between vision and touch? Are the senses linked through learning or bound at birth? -/- Molyneux’s Question and the History of Philosophy is a major collection of essays that explore the long-standing issues Molyneux’s problem presents to philosophy of mind, perception and the senses. In addition, the volume considers the question from an interdisciplinary angle, examines the pre-history of the question, and aspects of it that have been ignored, such as perspectives from religion and disability. -/- As such, Molyneux’s Question and the History of Philosophy presents a set of philosophically rich, empirically informed, and scientifically rigorous original investigations into this famous puzzle. It will be of great interest to students and researchers in philosophy, psychology, and the cognitive sciences including neuroscience, neurobiology and ophthalmology, as well as those studying the mind, perception and the senses. (shrink)

A recent study published in Nature Neuroscience purports to have answered a question posed to Locke in 1688 by his friend William Molyneux, namely, whether ‘a man born blind and made to see’ would be able to identify, immediately and by vision alone, objects previously known only by touch. The answer, according to the researchers – and as predicted by Molyneux, as well as Locke, Berkeley, and others – is ‘likely negative. The newly sighted subjects did not exhibit an (...) immediate transfer of their tactile shape knowledge to the visual domain’. Since then, however, many commentators have argued that the answer is still not clear. Moreover, in the contemporary literature on Molyneux’s Question, and more generally on cross-modal perception and the individuation of the senses, it is sometimes hard to determine what question is being investigated. In this paper, I distinguish a number of different questions about the relation between visual and tactual perception that can arise when considering Molyneux’s... (shrink)

There have recently been various empirical attempts to answer Molyneux’s question, for example, the experiments undertaken by the Held group. These studies, though intricate, have encountered some objections, for instance, from Schwenkler, who proposes two ways of improving the experiments. One is “to re-run [the] experiment with the stimulus objects made to move, and/or the subjects moved or permitted to move with respect to them” (p. 94), which would promote three dimensional or otherwise viewpoint-invariant representations. The other is “to (...) use geometrically simpler shapes, such as the cube and sphere in Molyneux’s original proposal, or planar figures instead of three-dimensional solids” (p. 188). Connolly argues against the first modification but agrees with the second. In this article, I argue that the second modification is also problematic (though still surmountable), and that both Schwenkler and Connolly are too optimistic about the prospect of addressing Molyneux’s question empirically. (shrink)

Reid’s discussion of Molyneux’s question has been neglected. The Inquiry discusses the question twice, offering opposing answers. The first discussion treats the underlying issue as concerning common perceptibles of touch and vision, and in particular whether in vision we originally perceive depth. Although it is tempting to treat the second discussion as doing the same, this would render pointless various novel features Reid introduces in reformulating Molyneux’s question. Rather, the issue now is whether the blind can form (...) a reasonable conception of visual appearances, a conception that would allow them to perform Molyneux’s task. In explaining why Reid thought they can, I draw on his account of primary quality concepts as independent of sensation; of concept possession as ability, not acquaintance with sensation; and of visual appearance itself as in key part a matter of the perception of a primary quality, visible figure. Thus the issue does not concern cross-modality, what vision has in common with touch; but how even what is central in vision is amodal, able to be grasped independently of any sensory mode. Reid’s second Molyneux discussion thereby forms a focus for the Inquiry’s central claims, and the rejection of the Ideal Theory they entail. (shrink)

This book is a collection of essays, dealing with one of the most interesting topics in the history of ideas, particularly in the history of theories of visual perception: the question posed by Wil...

William Molyneux was born in Dublin, studied in Trinity College Dublin, and was a founding member of the Dublin Philosophical Society (DPS), Ireland’s counterpart to the Royal Society in London. He was a central figure in the Irish intellectual milieu during the Early Modern period and – along with George Berkeley and Edmund Burke – is one of the best-known thinkers to have come out of that context and out of Irish thought more generally. In 1688, when Molyneux wrote the (...) letter to Locke in which he posed the now famous question about a man born blind made to see, he was an active member of the DPS and was on familiar terms with several other key figures in Irish philosophy at the time. For the most part, Irish thinkers in the seventeenth and eighteenth centuries answered “no” to Molyneux’s question of whether a blind man made to see could distinguish, by sight alone, between a cube and a sphere. (shrink)

Schwenkler (2012) criticizes a 2011 experiment by R. Held and colleagues purporting to answer Molyneux’s question. Schwenkler proposes two ways to re-run the original experiment: either by allowing subjects to move around the stimuli, or by simplifying the stimuli to planar objects rather than three-dimensional ones. In Schwenkler (2013) he expands on and defends the former. I argue that this way of re-running the experiment is flawed, since it relies on a questionable assumption that newly sighted subjects will be (...) able to appreciate depth cues. I then argue that the second way of re-running the experiment is successful both in avoiding the flaw of original Held experiment, and in avoiding the problem with the first way of re-running the experiment. (shrink)

Might the once-blind recognize shapes familiar to the touch by sight alone? “Not”, replied both Locke and the question’s designer, William Molyneux. Leibniz, by contrast, replied, “yes” to Molyneux’s Question. However, Leibniz’s reason for his affirmative answer has yet to be discussed directly with any depth, a lacuna this paper seeks to address. The main contention of this paper is that Leibniz cannot think that sensory representations based on the sight and touch of shape sufficient for this task, (...) as several commentators have suggested. Rather, I argue that Leibniz’s answer is based on the ability of the once-blind to unconsciously employ “common sensibles,” representations of shape that are independent of sight and touch. (shrink)

Molyneux asked whether a newly sighted person could distinguish a sphere from a cube by sight alone, given that she was antecedently able to do so by touch. This, we contend, is a question about general ideas. To answer it, we must ask (a) whether spatial locations identified by touch can be identified also by sight, and (b) whether the integration of spatial locations into an idea of shape persists through changes of modality. Posed this way, Molyneux’s Question (...) goes substantially beyond question (a), about spatial locations, alone; for a positive answer to (a) leaves open whether a perceiver might cross-identify locations, but not be able to identify the shapes that collections of locations comprise. We further emphasize that MQ targets general ideas so as to distinguish it from corresponding questions about experiences of shape and about the property of tangible (vs. visual) shape. After proposing a generalized formulation of MQ, we extend earlier work (“Many Molyneux Questions,” Australasian Journal of Philosophy 2020) by showing that MQ does not admit a single answer across the board. Some integrative data-processes transfer across modalities; others do not. Seeing where and how such transfer succeeds and fails in individual cases has much to offer to our understanding of perception and its modalities. (shrink)

BackgroundThe potential contribution of community engagement to addressing ethical challenges for international biomedical research is well described, but there is relatively little documented experience of community engagement to inform its development in practice. This paper draws on experiences around community engagement and informed consent during a genetic cohort study in Kenya to contribute to understanding the strengths and challenges of community engagement in supporting ethical research practice, focusing on issues of communication, the role of field workers in 'doing ethics' on (...) the ground and the challenges of community consultation.MethodsThe findings are based on action research methods, including analysis of community engagement documentation and the observations of the authors closely involved in their development and implementation. Qualitative and quantitative content analysis has been used for documentation of staff meetings and trainings, a meeting with 24 community leaders, and 40 large public and 70 small community group meetings. Meeting minutes from a purposive sample of six community representative groups have been analysed using a thematic framework approach.ResultsField workers described challenges around misunderstandings about research, perceived pressure for recruitment and challenges in explaining the study. During consultation, leaders expressed support for the study and screening for sickle cell disease. In community meetings, there was a common interpretation of research as medical care. Concerns centred on unfamiliar procedures. After explanations of study procedures to leaders and community members, few questions were asked about export of samples or the archiving of samples for future research.ConclusionsCommunity engagement enabled researchers to take account of staff and community opinions and issues during the study and adapt messages and methods to address emerging ethical challenges. Field workers conducting informed consent faced complex issues and their understanding, attitudes and communication skills were key influences on ethical practice. Community consultation was a challenging concept to put into practice, illustrating the complexity of assessing information needs and levels of deliberation that are appropriate to a given study. (shrink)

Molyneux’s question, whether the newly sighted might immediately recognize tactilely familiar shapes by sight alone, has produced an array of answers over three centuries of debate and discussion. I propose the first pluralist response: many different answers, both yes and no, are individually sufficient as an answer to the question as a whole. I argue that this is possible if we take the question to be cluster concept of sub-problems. This response opposes traditional answers that isolate specific (...) perceptual features as uniquely applicable to Molyneux’s question and grant viability to only one reply. Answering Molyneux’s question as a cluster concept may also serve as a methodology for resolving other philosophical problems. (shrink)

Molyneux’s question asks whether someone born blind, who could distinguish cubes from spheres using his tactile sensation, could recognize those objects if he received his sight. Locke says no: the newly sighted person would fail to point to the cube and call it a cube. Locke never provided a complete explanation for his negative response, and there are concerns of inconsistency with other important aspects of his theory of ideas. These charges of inconsistency rest upon an unrecognized and unfounded (...) assumption that seeing entails recognition. Locke’s negative answer to Molyneux’s question is consistent with his other philosophical commitments. (shrink)

This essay deals with the early discussion of Molyneux’s question - which may hopefully cast some light on the contemporary debate – and is written from an historical point of view. I will claim that, in the eighteenth century history of Molyneux’s question, there is a leading figure: Denis Diderot; the most original and fruitful answer is given in his Lettre sur les aveugles à l’usage de ceux qui voient (1749). From the historical background of Diderot’s analysis, both (...) the merits and limitations of the negative and positive answers, along with the inadequacy of the standard classification between “empiricists” and “rationalists”, will also emerge. Diderot’s “relativistic” solution is a turning point in the whole philosophical discussion of Molyneux’s question, in that it has been confirmed by clinical reports of surgical operations of blind people, starting from Cheselden’s case. (shrink)

Representationalism is the view that perceptual experience essentially involves being in a representational state and that the phenomenal character of perceptual experience is exhausted in its representational content. In this paper, I argue that the representationalist’s Simple Answer to Molyneux’s question does not work because it has phenomenologically implausible consequences. Since intramodal representationalism has serious shortcomings, I suggest that the representationalist should opt for an intermodal approach. Moreover, I argue that intermodal representationalism is best supported by quality space theory (...) so as to make sense of the claim that visual and tactile experiences of an object of a given shape differ in their representational content. On this view, the representationalist’s response to Molyneux’s question ultimately depends on whether the cross-modal calibration of quality spaces is innate or learned. (shrink)

It’s been more than three hundred years since William Molyneux posed his now-famous question to John Locke. While it’s clear that Locke agrees with Molyneux that someone born blind and made to see would be unable to recognize at first sight the objects he knew previously only by touch (cross-modal recognition), why Locke thinks this is difficult to understand given Locke’s apparent reluctance to engage much with Molyneux’s question. I argue here that due to the lack of clear (...) textual support, and because previous attempts to account for Locke’s negative answer fail to recognize just how little justification Locke provides, motivate the need for a new approach to explain Locke’s answer to Molyneux’s question. My new approach is to consider what successful Lockean cross-modal recognition might look like given his “Architecture of Ideas,” the work of his Essay to account for mental content, from simple sensory ideas to knowledge. This allows us to identify which ideas and mental faculties he might likely consider essential for success at Molyneux’s task, and which, if lacking, explain the newly sighted man’s failure. Furthermore, this approach yields some surprising results: there is more than one reason the newly sighted person would fail. And adjusting the question to involve a cross-modal comparison of two-dimensional shapes does not suggest Locke would change his answer to ‘yes’. (shrink)

In the xvii century, William Molyneux asked John Locke whether a newly-sighted person could reliably identify a cube from a sphere without aid from their touch. While this might seem an easily testable question, answering it is not so straightforward. In this paper, I illustrate this question and claim that some distinctions regarding the concept of consciousness are important for an empirical solution. First, I will describe Molyneux’s question as it was proposed by Molyneux himself, and I’ll (...) briefly say something about its early debates. Second, I will go over some empirical attempts to solve this question, including recent experiments coming from neuroscience. Third, I will introduce some distinctions with regards to consciousness, and in the following section I will apply them to the Molyneux case. Finally, I will shortly consider some consequences of this approach. I conclude by suggesting researchers pay attention to different senses in which Molyneux’s question might be posed for empirical purposes. (shrink)

In this paper I argue that the answer(s) to Molyneux's question are not as important as usually assumed. This view stems from two directions: (i) I believe the question is generally under-specified, and can be made precise in several incompatible ways (something noted by many others) and (ii) in order to answer a precise formulation of the question we are forced to make a number of assumptions about the individuation of the senses, the nature of representation, (...) and about psychological explanation. These assumptions play an outsize role in evaluating Molyneux questions compared to most other questions in cognitive science, lessening the interest of any particular study or finding on this matter, even when we are very precise in the formulation of our question. Further, if we take our best contemporary accounts of sensory taxonomy, representation, and psychological explanation to be inherently pluralistic, modestly interest-relative, and multivariate (as many do), then we should not expect any answer to a precise version of the question to definitively settle any issues about content, taxonomy, or psychological explanation. The focus of this paper is a defense of this second line of thought. (shrink)

The historical Molyneux’s question – roughly, whether congenital blind subjects can visually identify shapes in front of them right after being made to see – is having its renaissance in recent years (Ferretti and Glenney, 2021). While there have been many different formulations of it, and many attempted answers as well, no clear consensus has been reached. Moreover, although arguably both memory and imagination are involved in the process, their roles in the Molyneux’s task have not been adequately discussed. (...) In this paper, I focus on a specific version of Molyneux’s question, propose a specific hypothesis in relation to that version, and sketch the roles of structural correspondence, memory, and imagination in the relevant hypothesis. One key moral of this discussion is that while Molyneux’s question has primarily been regarded as a perceptual puzzle, other kinds of mental episodes such as memory and imagination have to be taken into account as well in order to have a more satisfying answer to versions of Molyneux’s question (Macpherson and Dorsch, 2018). (shrink)

Molyneux’s problem asks whether a person blind from birth, upon gaining sight, could immediately recognize and distinguish objects by sight alone that were previously known only by touch. Historical and contemporary empirical studies have explored this question with inconclusive results due to empirical limitations. More recently, Held and colleagues (2011) found that treated congenitally blind individuals cannot immediately recognize objects previously familiar through touch. Piller and colleagues (2023) further reported the absence of visual illusions in blind and recently visually-restored (...) individuals. Nevertheless, cross-modal mappings gradually develop post-sight restoration. These findings suggest a reluctance of the mind to make cross-modal inferences, aligning with the predictive processing (PP) framework. PP posits that the mind generates top-down predictions about sensory stimuli, updating internal models through prediction errors when expectations are not met. With no prior visual experience, generative models in congenital blind individuals fail to produce accurate predictions. PP’s representational claims have been challenged by 4E cognitivists, who emphasize embodied, embedded, extended, and enactive aspects of cognition. This paper proposes a Situated Predictive Processing (SPP) framework that integrates PP with 4E cognition through the concept of situated mental representations, offering a new perspective on the Molyneux’s problem and emphasizing the role of experience and situatedness in the gradual development of visual-tactile mappings post-sight restoration. (shrink)

Ordinary common sense suggests that we have just one set of shape concepts that we apply indifferently on the bases of sight and touch. Yet we understand the shape concepts, we know what shape properties are, only because we have experience of shapes. And phenomenal experience of shape in vision and phenomenal experience of shape in touch seem to be quite different. So how can the shape concepts we grasp and use on the basis of vision be the same as (...) the shape concepts we grasp and use on the basis of touch? I think this is the intuitive puzzle that underlies the question sent by the Dublin lawyer Molyneux to John Locke. This concerns a man born blind, who learns by the use of his touch to discriminate cubes from spheres. Suppose him now to gain the use of his sight. And suppose him to be presented with a cube and a sphere, of nighly the same bigness. Quaere, will he be able to tell, by the use of his vision alone, which is the sphere, and which the cube? (Locke 1975, II/ix/8.). (shrink)