The Chinese word 演绎 is formed through a conceptual and historical layering of its two constituent characters. It originates from classical texts, where 演 meant "to extend, to develop" (like water flowing or an idea spreading), and 绎 meant "to unravel, to deduce" (like following the thread of a logical argument). Combined, the term visually and intellectually conveys the process of starting from a fundamental principle or premise and methodically unfolding or deducing a detailed explanation, theory, or narrative from it, much like drawing out a continuous thread from a source. This formation captures the essence of deductive reasoning and systematic exposition in a single, metaphorically cohesive unit.