If several languages coalesce, the grammar of the resulting language is more simple and regular than that of the individual languages.it will seem like simplified English, as a skeptical Cambridge friend of mine told me what Occidental is. The European languages are members of the same family. The new common language will be more simple and regular than the existing European languages.

Their separate existence is a myth. For science, music, sport, etc, Europe uses the same vocabulary. The languages only differ in their grammar, their pronunciation and their most common words.