 “Roughly equal,” as used here, is to be distinguished from two other ways in which the term has been used: (1) to refer to a small difference in value between two items and (2) to refer to a choice of little significance (Raz 1986, 333). As used here, two items A and B are said to be roughly equal if neither is worse than the other and C’s being better than B does not imply that C is better than A when the comparisons are all in virtue of the same set of respects.