This question has received the most attention in large part because of Molyneux’s famous letter to Locke (see the entry on  Molyneux’s problem).  Molyneux asked whether whether a subject born blind could, upon complete restoration of sight, tell a cube from a sphere (a difference learned through touch) using sight alone. This raises many questions about the transferability and connection between the spatial representations made available in touch and vision. There are many assumptions underlying Molyneux’s question, which have long been investigated by philosophers and psychologists (Evans 1985; Campbell 1996; Hopkins 2005).