[ghaff]

To echo others, I would need to be convinced that learning a synthetic language that, for most of us, will never have any direct practical use has some unique pedagogical value. For me, learning an actual language, however imperfectly, that has a history, literature, and in many cases current speakers and culture seems far more interesting. But, then, I never had any interest in learning Klingon or elvish either.

[em-bee]

right, we need more research to verify that theory.