First I though that people should give X more of a chance in hiring, because they shouldn't assume anything about X's background just because they are X. Now,

First I though that people should give X more of a chance in hiring, because they shouldn't assume anything about X's background just because they are X. Now, at the same time, people say that we should hire X because they have a different background. That sounds like a fun backroom conversation in cases where the diversity-part doesn't work out - "We hired that black guy because we wanted more diversity on the team. It turns out, though, that he has a very, um, non-black background, by which I mean that he isn't really like a stereotypical black person at all. In fact, he grew up mostly with group Y, which we already have a majority of, anyway. So I had to let him go and find some other black people, in the name of diversity."