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)

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)

Ci sono domande che rimangono tali per secoli e anche se non trovano risposta riescono a mantenere vivo il nostro interesse, diventando col tempo dei veri e propri rompicapi. Una di queste è quella formulata da William Molyneux nel 1688, conosciuta come il Quesito di Molyneux. In questo caso l’interesse non riguarda solo la domanda in sé ma anche la sua infinita storia. 1. La storia del Quesito di Molyneux Il Quesito di cui parleremo in queste pagine fa la sua (...) comparsa, per la prima volta, in... (shrink)

Il senso comune tende a credere all’esistenza delle illusioni ottiche e percettive ma difficilmente sostiene la tesi di un ragionamento illusorio. Nel campo della psicologia del ragionamento si parla piuttosto di errori di ragionamento, che l’esperienza può correggere e modificare. Per questo nel tempo si è consolidata la credenza che esista una netta distinzione tra le une e le altre. Le prime sarebbero più forti, le seconde più deboli e con possibilità di correzione. In questo lavoro intendo dimostrare, attraverso la (...) presentazione e analisi di una topologia delle illusioni, che esiste, in realtà, una struttura universale sottostante a ogni tipo di illusione. Questa stessa struttura è quella che ci permette di parlare di un criterio universale per identificare le illusioni, una parte fondamentale del mondo esterno. (shrink)