The English is natural, just as it's natural for knowledge of foreign languages to be down where English is native. Since the dawn of the Industrial Revolution the dominant global culture has been an English speaking one, either British or American, so it's become the lingua franca as French was during the Enlightenment and Renaissance. Even RAFO reflects that; when it left the States it just went to Britain, so the only thing that changed was the hosting (well, you know what I mean. ) Just like a Frank and a Turk could communicate better in Greek or Latin than they could in German or Turkish. That's what makes it so interesting, not that English is so often the first language, but that German is so often the second, far more than Russian or French.