Blurb:

6.1 All human natural languages (spoken and signed) are direct manifestations of the human faculty of language; 6.2 All human natural languages (spoken and signed) belong to the same linguistic species; 6.3 All known human languages are in the same stage of linguistic evolution; 6.4 Language change is not language evolution; 6.5 All human natural languages (spoken and signed) present a similar degree of grammatical development; 6.6 All human natural languages (spoken and signed) can be spontaneously acquired by human infants; 6.7 All human natural languages (spoken and signed) are
constrained in their competence and performance by the psycho-physiological limitations of human beings; 6.8 E-Languages are not natural languages; 6.9 Only I-Languages are grammatical competences; 6.10 Cultivated languages are not natural languages;