@bill93
One might point out that if everyone knows English, it makes little sense to learn a hundred other languages. One example is Switzerland, where they learn 4 or 5 languages early on because they must. It isn't based on an educational benefit.
Long ago, when I was going to school, they taught Spanish, as it is the defacto second language of the US. Also, it allowed you to navigate all of the hemisphere. Now, in a business setting, it isn't really needed. Everyone speaks English. This is not jingoistic (not asserting cultural superiority here), it is actually freeing, as it also allows for a single common language from all sorts of countries to communicate. English is not the lingua franca due to some superiority of the language, it is simply what has happened.
French makes sense if you travel to Asia or Africa, but learning all the different languages (and it isn't like there is just one language called "Chinese") would be a process that would be futile. Even learning Mandarin would be limited to certain parts of China, although I suppose it is becoming a lingua franca all its own.
Anyway off topic...as usual for me.
Welcome to the surveyor from China!