Normative philosophy believes that argumentation concerning values is rational because there is a deeper value to which all are committed. Citing Ronald Dworkin’s 1977’s Taking Rights Seriously, Will Kymlicka suggests that this “ultimate value” is equality. Having a standard enables rationality because it enables competing theories to show “that one of the theories does a better job living up to the standard that they all recognize”. The measure for whether an argument weighs as much as it claims is how well (...) it accounts for treating people equally and fairly. Fair and equal treatment is measurable enough, and for the same reason values generally are: it helps form the reality of... (shrink)