Writing and Evolution

Beginning with the premise that the contents of Duration are "immediately given", Bergson conceives Spirit and Matter as related as Reality to Appearance, and, eventually, Elan Vital as the Reality of Evolution.  However, since the concept of Evolution entails biological distinctions between greater and lesser complexity, but Elan Vital remains constant, his version of it, perhaps unwittingly, is a theory of Appearances alone.  In contrast, beginning, as has been previously discussed, with the recognition that what he actually presents is a description of Duration, the immediately given is his act of writing, which he could conclude would be impossible without the versatile thumbs that distinguish humans from all other organisms.  Thus, a theory of Evolution developed on that basis might not only describe, but exemplify, Writing as an evolutionarily advanced mode of communication within a species.