 There are several concerns worth mentioning with regard to how this procedure implicitly defines biodiversity. First, since we are operationalizing the concept biodiversity, it is simply defined by what a place prioritization procedure optimizes. Thus, it cannot be in error with regard to whether it has captured some pre-theoretic notion. It rules out the possibility of mistake (Hempel 1966: Ch. 7). We do not think that the concept of temperature is just whatever is measured by thermometers (Chang 2004). Second, insofar as there are different place prioritization procedures, they will implicitly define distinct concepts. They will not be measuring the same magnitude. Third, concept explication requires that the explicatum be distinct but sufficiently similar to the explicandum for the analysis to be of theoretical value (Carnap 1950/1962: Ch.1). There are two ways of seeing how the concept(s) articulated by Sarkar differ from our “ordinary” ones. The concept most conservation biologists articulate is categorical and not relational. The concept is similarly imbued with much moralizing as we shall see and one can be competent with the one and not the other. Hence, one might argue that they are different concepts (Odenbaugh 2009). As David Takacs writes,