I was fluent in Latin at one point in my life. I am proficient in Japanese as well, although I need to review a bit to kick some dust off.
I attempted to learn Mandarin. The course I took was not very good and did not have enough practice speaking in class. I was meeting with a friend (native speaker) to practice once a week, but I felt like I was monopolizing her time a bit too much. And I still sucked. :/ I can read a decent amount, to the point where I can understand simple sentences and communicate simple ideas with my parents-in-law, but that's about it. I want to try again. I can detect the tones when my wife tells me a word at much higher accuracy than I used to be able to, so it seems at some unconscious level, something is sinking in.
I think I'm pretty adept with languages, especially for a scientist. Some of what you see written by scientists is fairly horrifying. And I'm not talking about stuff non-native speakers write--in some ways, they write better than people who speak only English!
Originally posted by SpecialK What happened to Esperanto?
It was superseded by English. One of Esperanto's primary failures was that it was only easy for native speakers of European languages to learn. For speakers of Asian languages, it was no easier than learning English or French. That kinda made it fail as a global language, since it's better to learn a natural language than a constructed one if both are the same difficulty for you.
Plus, almost all technical science terms are created in English. That was another big strike. Esperanto lacks a large body of technical words, and as it turns out, most people really aren't interested in learning a new language to talk about family, friends, and the weather. They do it for business and because they need to.
The premise of the language was interesting but it can't really work. Once people start using a language, it will become corrupted as a natural process. Esperanto can only maintain its "purity" and lack of exceptions, inconsistencies, etc. when few people are using it. Because language is ultimately expressive and different people express themselves through words in different ways, every language user will customize use of language for his own purposes. And then it's just a matter of time before it gains all of the complexities of natural language.