Esotera said:Also a bit more on-topic there's a school of thought that believes the way you think is influenced by the language you speak, so every time a language dies humanity loses a unique cultural perspective on the world.
It's proven that the names of colours in a language affects how you see them. In some African languages, yellow, brown, red, and orange are all the same and speakers of it can't tell the difference. Japanese has no (or almost no) blue/green distincion.
OT: Well English is already becoming that, sort of. I believe in Denmark it's mandatory to write scientific journals in English, and if you count second language speakers it has the most speakers in the world. However forcing a single language for everyone probably won't happen. If it did happen it might splinter into new dialects, and not to mention that while a German might not have much trouble learning English, a Korean might. Any language we decide to make a universal language will be incredibly hard for some people who's native language is very different.
Probably won't happen, what English is at the moment is probably the closest we'll get. Go to a foreign country and signs will have English, all the tourist attractions are in English, and because it's mandatory in so many countries, well over half the people you talk to probably understand it.