 The case for incomparability in such examples relies in part on what Ruth Chang calls the “Small Improvement Argument” (Chang 2002b, 667). As noted in the initial discussion of the example, if the legal and musical careers were of equal value, then a slightly improved version of the legal career would be better than the musical career, but this judgment appears incorrect. The Small Improvement Argument takes the following general form: “if (1) A is neither better nor worse than B (with respect to V), (2) A+ is better than A (with respect to V), (3) A+ is not better than B (with respect to V), then (4) A and B are not related by any of the standard trichotomy of relations (relativized to V)” where V represents the relevant set of considerations for purposes of the comparison (Chang 2002b, 667–668).  In addition to Raz, Derek Parfit and Walter Sinnott-Armstrong are among those who have advanced the Small Improvement Argument (Parfit 1984; Sinnott-Armstrong 1985). A similar argument, but for preference relations has, however, a longer history. Leonard J. Savage hints towards this possibility already 1954, in 1958 R. Duncan Luce presents a version of the argument that he attributes to Howard Raiffa, and it is also discussed by Ronald de Sousa in 1974 (Savage 1954; Luce 1958; de Sousa 1974).