Literary notes about Signal (AI summary)
In literature, the word "signal" is used both in a literal sense to denote a visual or auditory cue and in a metaphorical sense to mark significant transitions or convey hidden meaning. For example, authors like Conan Doyle and Verne employ it to denote a specific, observable prompt—a hand gesture or a whistle—that initiates action or indicates an imminent event [1, 2, 3]. At times it embodies a broader symbolic gesture, representing providence or fate as seen in historical narratives and epic poetry, where a single signal can alter the course of events or mark a decisive moment [4, 5, 6]. Whether serving as a cue for battle, a call to assemble, or simply a marker of time and circumstance, "signal" functions as a pivotal literary device that enhances narrative tension and guides the reader through shifting moods and actions [7, 8, 9].