>>212819377 (OP)
A language is only useful if its speakers are monolingual.
>Americans are monolingual -> English is useful
>Latinos are monolingual -> Spanish is useful
>Brazilians are monolingual -> Portuguese is useful
>Russians are monolingual -> Russian is useful
>Chinese people are monolingual -> Chinese is useful
>Japanese people are monolingual -> Japanese is useful
Languages whose speakers are bilingual are useless.
>Germans are bilingua -> German is useless
>Swedes are bilingual -> Swedish is useless
>Finns are bilingual -> Finnish is useless
>French people are bilingual -> French is useless
>Koreans are bilingual -> Korean is useless
>Indians are bilingual -> Hindi is useless
The more monolingual speakers a language has, the more useful it is.
