It is unlikely that any educational topic has never been written about. However, there may be emerging areas of research or niche topics that have limited published literature.
There has never been anything like that.
There has never been a study on such a topic.
Something (a program) that's only been thought about; never written, never implemented.
It has never been disclosed whether or not Noah Cyrus has ever been spanked. Neither he or his parents have discussed this topic openly.
No well at least i don't think I've actually never been to Carlsbad so i wouldn't know.
There have been a number of books written on the topic of Hades, but usually it is a compilation book with a number of other Gods and Goddesses.
His never been there. (written in 2012)
The term Fan Fic means that the story on the page is a fictional story that has been written by a fan of the series or topic. These are usually written and read by young girls.
Books have been written on this topic. Find a copy of Cartridges of the World for the most common handgun, shotgun and rifle.
It is impossible to determine an exact number of books that have never been written as it is a hypothetical concept. However, it is safe to assume that the number is infinite, as there are countless ideas and stories that may never come to fruition.
This topic seems never to have been discussed regarding any of the fictional characters of Adult Swim's animated series Metalocalypse.
Puerto Rico has only one constitution. It has never been re-written ever since.