I really don't know whether to believe this article. The whole setup sounds a little too ... perfect.

We have:

* a language where "speakers can dispense with their vowels and consonants altogether and sing, hum, or whistle conversations"

* a language that "contains no words at all for discrete numbers"

* a tribe too arrogant to learn any other language

There are stranger things in the world, but I'd take a long, hard look at the guy reporting these facts before I took them at face value