http://tinyurl.com/6khfq

though I was bothered by the use of "true language", used to describe spoken/written language...

very interesting, none-the-less.

Thanks for posting this, eta. I'd been looking for a link that had more than just standard "science journalism" accounts.

I wonder about the grammars of creoles, which supposedly are pretty similar even if the parent languqages are drastically different. Are the grammars of sign languages equally similar?