It was used as a second language across many indigenous peoples. Inuit Sign Language could be a similar case in the Arctic among the Inuit for communication across oral language boundaries, but little research exists. The Nevians being as eager as the Terrestrials to establish communication, Nerado kept the newly devised frequency changer in constant use. There is no need of describing at length the details of that interchange of languages. Suffice it to say that starting at the very bottom they learned as babies learn, but with the great advantage over babies of possessing fully developed and capable brains.