When a language is used to separate instead of being used to represent a society, we have a problem…
Speaking about any particular topic is a great source of learning stuff… but solving a problem is what really matters!
It is fairly easy to keep up obligations while you are in the middle of your routine life, but do you keep up your obligations while on vacation?
Can you imagine a country in which 800 different languages are spoken?
What makes a region to have different tongues is isolation of the human groups. When we have different islands and different tribes which barely have contact among themselves, we get something as impressive as Papua New Guinea.