The classes have a basic level and are focused on the elementary and fundamental notions for the touristic service, stimulating the learning of a basicvocabulary for a better communication with the foreign visitor.
Instead, the assimilation of elements of French into English produced Middle English and, with it, thebasic profile of the language we still speak: a large vocabulary of Germanic and French-derived words organized with a simplified Germanic grammar.
Unlike archaeological radiocarbon dating based on the fixed rate of decay of the carbon-14 isotope, there is simply no fixed rate of decay of basicvocabulary, which would allow us to date ancestral proto-languages.