I find the study at the following URL interesting:
http://www.scn.org/~lilandbr/eomath.htmlNow, while I'm not a die-hard Esperanto fan (at this time, anyway), this article brings some major issues to mind. One issue is how English is taking over the world . . .
I say we all keep our languages. Language is part of who we are - and, if we all speak the same language . . . we'll lose a lot of who and what this world is, or has been (much has already been lost). It pains me to see people from traditionally the most ethnic-seeming of countries coming to the United States and adopting the US forms of thought (there are a lot of subtle forms of thought out there; mostly attitudes, actually, and they're very contagious when the influential people are like that).
I do give Esperanto props for being easy to learn, if this is true. I suppose it would be easier for someone who spoke German or Spanish than an English speaker, though.