What a language is?

My father worked in a bank, the Central bank of Brazil, and in there english when I was small was the most technical language, so was prefer to even portuguese for who need very much computer, internet is young? In my mind no, see if you are on vacation in Rio de Janeiro from São Paulo, you only need went to an Agengy in Rio de Janeiro and got money that you put in your count in São Paulo, Haaam, you don't put money in Rio de Janeiro, the information was transmitted by internet I don't care the name that had to your money could be drawee in an Agency that isn't the one that you put your money, before was from letter, but is of the past so internet for bank at least probably have 50 years, so English is a technical language, for information the max is English and for all the other sciences the language that defines is Latin a dead language, that is technical because is dead and would not be transformed by the organicity of the use, and what the catch? Is that the correct pronunciation for Eglish isn't the way what is the rule, organic when you are talking 300 words per minute, the pronunciation is a kind of different, when I was small a friend of my father that was an English professor went to the USA and there people don't like his correctness of pronunciation, he came back bitting his tale, he said that he went for a place of USA that the influence of the Spanish was so strong that the pronunciation there was near to the vogel in Latin, so isn't organic you talk very slowly to explicit the rule of the vogel. Rute Bezerra de Menezes Gondim