Hm, I always guessed that the brain simply goes by a kind of "maximum information gain" approach, picking out the features that tend stick out most to distingui

Hm, I always guessed that the brain simply goes by a kind of "maximum information gain" approach, picking out the features that tend stick out most to distinguish things. If unused to, skin color sticks out extremely, so the signal it generates would drown out the other signals. But that is just a guess and might also go against the findings of the article, which I haven't fully understood yet. In any case it seems to me that the brain is optimized for processing certain features, as apparently there are people who are unable to recognize faces (face blindness).