PurposeThe term diverse books is increasingly popular yet persistently nebulous. The purpose of this paper – Part I of II – is to illuminate both that the concept is in need of a unified account and that conceptual analysis, though at first seemingly quite promising, fails as a method for identifying one.Design/methodology/approachThis paper utilizes traditional (or intuitive) conceptual analysis to specify the respective clusters of necessary and sufficient conditions that constitute four broad candidate accounts of diverse books.FindingsThough diverse books is a concept in need of a definition, conceptual analysis is not an appropriate method for adjudicating between the definitions we have on offer. This is because the concept is fundamentally political, serving as a resource for re-shaping collective social arrangements and ways of life. The conceptual problem outlined here requires for its resolution a method that will move us from a descriptive project to an explicitly normative one, wherein we consider what we properly work to achieve with and through the concept in question.Originality/valueThis paper initiates a systematic analytical project aimed at defining diverse books. In illustrating a moment of methodological failure, it paves the way for a critical alternative – namely, Part II's proposal of an analytical intervention in which political concepts are defined partially in terms of their benefits vis-á-vis informational justice.