User blog comment:LOTRMod/On Canon/@comment-25344655-20150421015755

The book/canon/lore is great, it makes one prosper, but there is a certain spot, a certain time in a persons history in making something off of a book that the lore runs out, the canon draws thin, and the book left empty. Therefore you must make things that stretch the boundaries of canon, now don't go putting Thor in Isengard or anything, but add things that were not stated in canon, but possibly could be canon, like the Moredain and Tauredain.