 Of these two categories, a desire for matching is generally thought to be less morally problematic than a desire for design, since desires for familial resemblance, secrecy (within limits), and to avoid offence are often considered relatively benign. This is not, however, to say that no critical work has been done on this topic as shall be seen in  subsection 3.3  which looks to the question of whether race-based matching and selection practices are morally permissible.