* One thing I don't emphasize enough right now at that level is that a reason to emphasize the relationship between the hierarchy (the tree) of text understanding from symbols = graphemes - morphemes- words -sentences... and moving visuals is that the mapping is culturally necessary.
There must be cultural value to such binding before a new "also" a language form evolve (since we know are brain are capable of in the same sense that we develop the capacity to read a few thousands years of go).