 To clarify this situation, Charles Parsons suggested a first taxonomy, or at least a distinction between two main kinds of positions (Parsons 1990). Namely, there are “eliminative” forms of structuralism, as illustrated paradigmatically by Hellman; and there are “non-eliminative” forms of structuralism, like Shapiro’s. (The elimination at issue concerns the postulation, or avoidance thereof, of structures as abstract objects.) Or put in Hellman’s slightly later terminology, there is “structuralism without structures”, on the one hand, and “structuralism with structures”, on the other hand. Besides Shapiro and Resnik (with the qualifications above), another proponent of the non-eliminative form is Parsons himself (see Parsons 1990, 2004, and, most systematically, 2008); and another proponent of the eliminative form of structuralism is Charles Chihara (cf. Chihara 2004). 