"When several nations or countries speak a common language, linguists do not list all these peoples in the name of the language because that would be too long a name... In our case, linguists introduced a two-part name in the 19th century, and today's linguists have inherited it, just like today's chemists inherited terms in chemistry, or as American linguists inherited the name for their language. The edges of the tongue are named with the two-part name model, and the central zone is not necessarily named when the edges are known. This is the same as with Indo-European names, the edges are named, and the central zones of Armenian and Persian are not. I must point out that all these names only bind linguists and not ordinary people, they can call the language whatever they want, and they don't have to call it at all."