"Many black and white books and TV programmes have taught her all there is to know about colour vision. Mary knows facts like the structure of our eyes and the

"Many black and white books and TV programmes have taught her all there is to know about colour vision. Mary knows facts like the structure of our eyes and the exact wavelengths of light that stimulate our retinas when we look at a light blue sky." This is a serious hole in the argument. "All there is to know about color vision" is an abstraction---it's "about" color vision; it's not vision. The experience of color vision is a different set of data than wavelengths and eye structure.