According to "theory of meaning", In “General Semantics,” David Lewis wrote I distinguish two topics: first, the description of possible languages or grammars

According to "theory of meaning", In “General Semantics,” David Lewis wrote I distinguish two topics: first, the description of possible languages or grammars as abstract semantic systems whereby symbols are associated with aspects of the world; and, second, the description of the psychological and sociological facts whereby a particular one of these abstract semantic systems is the one used by a person or population. Only confusion comes of mixing these two topics. [1] : https://plato.stanford.edu/entries/meaning/ https://plato.stanford.edu/entries/meaning/