“…On this understanding, through using the mereological device of the mapping sentence, facet theory is a philosophical orientation towards research, as well as a research process, which attempts to culminate in the statement of a valid compositional mereology (mapping sentence) of its research domain. Moreover, this defi nition implies that the mereological composition of a domain of interest is the relation between a whole and its specifi c parts, in which parts form the whole and where the whole is nothing more than its parts: the whole is its parts (see Cotnoir and Baxter 2014 ).…”