Do you speak "Human"?

Somewhere out in space, in the Beta quadrant of the Star Trek Universe, there's a planet called Romulus. It's a planet a bit bigger than Earth, and has about 18 billion people on it. But Earth, with a third as many people, has about 7,105 languages, while Romulus has just "three major dialects."

io9: One Planet, One Language: How Realistic Is Science Fiction Linguistics?