It is generally agreed that, to achieve native - like fluency in a second language, the latest a child should begin acquiring primary
elements of the second language is age six, and the latest for the final elements is age twelve.
Another vital intersection was explored in Ascott's use
of the thesaurus in 1963 [1], which drew an explicit parallel between the taxonomic qualities
of verbal and visual
languages - a concept would be taken up in Joseph Kosuth's
Second Investigation, Proposition 1 (1968) and Mel Ramsden's
Elements of an Incomplete Map (1968).