The word "introductory" is deployed in literature with remarkable versatility, serving as a marker for beginnings in both formal and informal contexts. In some works it denotes a preliminary section that sets the tone, as seen in Coleridge’s moralizing prologue [1] or the straightforward chapter labels in texts like Keynes’s and Strunk’s [2, 3]. In academic and instructional writings, "introductory" signifies essential background information, as when it frames early discussions in sociology [4, 5, 6] or even the logical foundation of an argument [7]. Beyond purely expository uses, the term can evoke stylistic or performative nuances, appearing in contexts ranging from an "introductory letter" [8] and a brief exclamation meant to capture attention [9, 10] to an opening flourish in both music [11, 12] and narrative structure [13]. Thus, across genres and eras—from historical documents to literary classics—the term functions not merely as a descriptor of order but as a signal of the work’s intent to introduce, prepare, or emphasize what follows.