Lack of an international language Lack of universal artificial language Linguistic parochialism of artificial languages
Nature:
No language, including artificial or auxiliary languages, has achieved universal acceptance, thus exacerbating the problems and costs of communication, especially in international exchanges.
Incidence:
Several hundred attempts at designing artificial languages have been recorded. Most recent attempts include: Volapuk, Esperanto, Idio Neutral, Latino Sine Flexione, Ido, Occidental, Novial, Intefglossa, Interlingua, and Glosa, of which the most widely known is Esperanto.