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A programming language defines the structure and procedures of computation, much like DNA encodes the blueprint of life. On its own, it does not perform actions—those emerge through libraries, which function like RNA, translating the abstract into the executable.

Standard libraries resemble housekeeping genes, providing core utilities present in every environment. Control structures and keywords mirror promoters in DNA, determining how and when parts of the code are expressed. External libraries resemble operon structures, bundling related functionalities for targeted execution.

Sometimes libraries evolve first, and the language later incorporates their patterns—just as RNA activity can feed back into DNA evolution. In this way, programming languages and libraries co-evolve as complements: static and dynamic, potential and implementation.