Caroline Ford wrote:
But linguistically almost _the_ test of "what is a language" is mutual comprehensibility.
A helpful tool, perhaps, but hardly the defining test. Consider the Scandinavian languages.
I would venture that the linguistic relationship between Bosnian/Croatian/Serbian is somewhat like the relationship between Danish/Norwegian/Swedish was from the Kalmar Union to the 19th-century period of romantic nationalism (after accounting for the increased uniformity promoted in more modern times by the printing press and universal education). The present differences are partly exaggerated for political reasons, but the political side of the equation is also likely to produce increasing distinguishability in a real sense over time. A single Serbo-Croatian wiki might be the right choice if we thought language was something frozen in place. If we conclude that languages continue to evolve, separate wikis might ultimately be more appropriate. In the interim, while this remains unsettled, I don't think it's necessarily awful that we're working along both tracks simultaneously.
--Michael Snow