 A further point worth nothing about Peirce’s developing sign theory is that by 1903, he had begun to think of his overall philosophy in architectonic terms, and this included a broadening of his view of semiotics (see Atkin 2015, 15–20). Put simply, Peirce thought that all domains of thought were connected and structured hierarchically, and that logic, “in its general sense, is … only another name for semiotic” (CP2.227 1897). Logic, construed as extensive with semiotic, in Peirce’s hierarchy contained three domains – Speculative Grammar (which is the study of sign classifications); Critical Logic (which is the study of the form and evaluation of arguments); and Methodeutic (which is the student of scientific inquiry). The discussion of Peirce’s sign theory here is placed firmly in the domain of speculative grammar, however, in the later developments of his work, Peirce began to think of these three areas of “logic” as involving semiotics. (See Bellucci 2017 for a discussion of speculative grammar and its development in Peirce’s thought).