 Dorr and Hawthorne  (2013)  argue that ‘Are some properties more natural than others?’ is too sensitive to unimportant disagreements about how philosophical terms of art get their meanings to be a useful  question.[69]  Inspired by Lewis’s work on theoretical terms (Lewis  1970b),  they suggest that the central debates in this vicinity should focus, instead, on the question which collections of the roles that naturalness has been held to play in the literature are such that there is some ranking of properties that plays all the roles in the collection. “Naturalness enthusiasts” will hold that there is a single ranking of properties playing all or most of the roles; “naturalness sceptics”, meanwhile, will hold that different roles impose incompatible constraints, so that no ranking satisfies more than a few of them. (For example, one might think that there is no family of properties on which all others supervene and which are also such that properties with short, simple definitions terms of this family tend to be easier to refer to than properties with only long, complex definitions.) Dorr and Hawthorne give a long list of collections of roles whose co-satisfiability is non-obvious. They also discuss one separate axis of disagreement: some will think that ‘natural’, or at least ‘perfectly natural’, is precise, or can readily be made so, while others will regard it as vague, perhaps to a high  degree.[70] 