Esref Armagan's case is really interesting, try to explain how he could understand perception, even tho he was blind? What would be a possible answer to Molyneux's problem? Or to this other problem: how does a blind person learn to understand perspective? While it has not been possible to test the question scientifically because very few people are born blind, and for those that are, it is not possible to just "flip a switch" and "turn on" their eyes and ask them this question. But consider a different question. Could a person born blind understand perspective? Remember, touch is not subject to perspective projections; vision is the only sense that must deal with 3D to 2D projections. So the empiricists would say "no, a person born blind could not learn about perspective." A rationalist might say "yes, because innate knowledge about depth would allow a blind person to understand perspective