This seems rather true...

I read this in a book recently, and it sounds about right to me. Just ask Colin & Victoria.

"It is a small world. You'd have to live in a particularly long to learn that for yourself. There is a theory that, in the whole world, there are only 500 real people (the cast, as it were; all the rest of the people in the world, the theory suggests, are extras) and what is more, they all know each other. And it's true, or true as far as it goes. In reality the world is made of thousands upon thousands of groups of about 500 people, all of whom will spend their lives bumping into each other, trying to avoid each other, and discovering each other in the same unlikely tea shop in Vancouver.”

- Neil Gaiman’s “Anansi Boys”