I don't quite get this idea. Is the ability to draw reflection of a sign (as if it was in mirror) or transposing a matrix or 'seeing' the graph of a function in my mind the same thing? I am terrible at remembering faces in details I can defiantly say if I saw a face before in my life or not but if you tell me to describe face of people who I lived with for many years I can't "see" them in my mind.