In the third and last part of this work, we will develop two aspects that seem central when explaining how it was possible for us to acquire a natural language (NL) that allows communicating the vicissitudes posed by our universal language (UL). We refer concretely to linguistic universals
and lexical categories, which will be known here as lexical contextures, but not observed from the grammar, but from a way of seeing reality. Applying everything learned so far, through the transcurssive logic (TL), we will try to give a coherent answer to questions that undoubtedly
represent the key to understanding the place that occupies, in our subjective reality, the NL, and its relationship with the acquisition of conventional code, without the need to resort to any of the
ontogenetic theories outlined in the first part of this work. Finally, after pointing out the importance of universals, lexical contextures and social inheritance in the acquisition of language, we will outline the general conclusions.
