The article mentions several other examples of fictional languages in television and movies, including Game of Thrones, and they spent some time talking about t

The article mentions several other examples of fictional languages in television and movies, including Game of Thrones, and they spent some time talking about those. So, I was surprised they left of lang belta, which is a pretty well developed fictional language, probably better than any of the examples from the article. One thing I absolutely loved about the first Dune movie was the incorporation of secret hand signals (covert sign language) from the book. The use of secret hand signal conveys the gravity and peril of the world they live in.