There are further, distinctive features of the teleological account in UP. One is that—in a highly intriguing and individualistic discussion which however is not developed in any detail (UP XI.14)—Galen introduces the notion of the aesthetic alongside that of function. Some features of the human body are to be explained not just in terms of its being better for them to be so, but in terms of their making the body more beautiful. (Examples are the male foreskin and the buttocks, both of which hide what would otherwise be unsightly, and the beard in men.)