The term “demonstrative” appears in literature with a remarkable range of meanings that depend on context. In narrative works, authors often use it to depict overt emotional expression or behavior. For example, Charlotte Brontë portrays a welcome that is “demonstrative, though brief” ([1]), and Oscar Wilde laments a lack of public affect, wishing someone had been “more demonstrative” ([2]). In contrast, grammar texts employ the term with technical precision, using it to designate a specific class of pronouns and adjectives that indicate particular, pointed references ([3], [4], [5], [6]). Meanwhile, philosophical writings expand its application even further—discussing “demonstrative reason” as a means of understanding relations and drawing inferences ([7], [8], [9]). This diversity of application illustrates how “demonstrative” is not only a marker of overt display in personal interactions but also a term of art in more formal linguistic and philosophical contexts.