Icelandic is a unique dialect of Old Norse, as it was settled by Norsemen over 1,000 years ago. However, this language is now being threatened to be added to the "Latin bin" due to the spread of English. High school students don't even start reading Icelandic novel until late in their senior year.
This article discusses how numbers are not innately known and must be taught, thus as such our language and "defining" them cannot be exact. Through research and monitoring children as well as isolated people like the Piraha, one see's it is difficult to differenciate numbers such as 4 and 5 and 7. While telling the difference between big and small or 1 and 2 are easy.
It was especially interesting that this effect held not only for those who had been adopted after the age of 17 months, when they would have been saying some words, but also for those adopted at under 6 months.
Nonverbal Messages: Cracking the Code Excerpt taken from Introduction (pp. ix - xiv) November 2, 2016 "What motivated me to spend fifty years investigating facial expressions, gestures, emotion and lies? Why these topics, which had been abandoned as fruitless by the academic establishment?...