“…In other words, they are cultural constructs, whose existence depends on the production and Interpretation of communicative objects, such äs spoken or written texts, pictures, dances, and so on. Unlike the worlds of logic, they are concrete or 'furnished' worlds, in the sense that they deal with specific entities and situations (DoleSel 1976: 12n;Eco 1989Eco , 1990; they are 'parasitical' (Eco 1989: 352), that is they rely on the receivers' knowledge of the actual world for their Interpretation (see also Pavel 1986: 104-5;Teleman 1989;Ryan 1991a: 48 ff. ); they are incomplete, since they do not assign truth-values to all conceivable propositions (Dolefcel 1988(Dolefcel , 1989Eco 1990: 64-82;Maitre 1983: 38); they are not always consistent, i.e.…”