How I Learned What a Domain Was

This paper re-traverses the author’s investigations across several years as he sought to pin-down the meaning of the in vivo category ‘domain’. The paper is a methodological reflection on the grounded theory approach to concept development, with a focus on the technical terms: in vivo category, iteration on the code, and sensitizing category. It is also a substantive theoretical contribution, elaborating the concept of a domain in computing, data and information science, and how it has long served as an organizing principle for developing computational systems. Four tricks of the trade for studying the ‘logic of domains’ are offered as sensitizing concepts to aid future investigations.