I recently saw [this](https://youtu.be/u8xL5NqfOHo?t=48s) clip where Karl Pilkington visits a Vanuatu tribe, in which it is said that every word of the (Ninde)[https://en.wikipedia.org/wiki/Ninde_language] language begins with the letter 'n'. I soon called BS, and as the wiki-page I linked to confirms, it was. My reason for doing so is that I'd think that if there was a language where every word began with an 'n', the speakers wouldn't be able to infer any information from it, and it would surely be dropped. 

>My question is whether or not this gut feeling is actually true: Has there ever been observed a (natural) language where some rule that in principle carried no information was still used?