“…Others will provide suggestive abstract models of value relations that make room for parity (Chang, 2002a(Chang, , 2005Rabinowicz, 2008Rabinowicz, , 2011Rabinowicz, , 2012Gert, 2004), while yet others will attempt to give formal (Carlson, 2010) or informal (Andreou, 2015) accounts of parity in other terms. 10 Still others, and probably in the end most persuasive, will provide arguments showing that there is important philosophical work that only parity can do or can do better than other standard notions (attempts made in Chang, 2009Chang, , 2012Chang, , 2013aChang, , 2013b. The case for parity has to be made piecemeal, but, like the trichotomist addressing the dichotomist, the tetrachotomist begins with the fact that there is nothing in our concepts of comparability and incomparability that rules out the possibility of a fourth basic relation.…”