Full Idea
Molyneux's Problem is whether someone who was born blind and acquired sight would be able to recognise, on sight, which shapes were which; that is, would they see which shape was the one that felt so-and-so?
Gist of Idea
Would someone who recovered their sight recognise felt shapes just by looking?
Source
Howard Robinson (Perception [1994], VIII.7)
Book Reference
Robinson,Howard: 'Perception' [Routledge 2001], p.207
A Reaction
(Molyneux wrote a letter to John Locke about this). It is a good question, and much discussed in modern times. My estimation is that the person would recognise the shapes. We are partly synaesthetic, and see sharpness as well as feeling it.