I love it when people show up on Tumblr and present themselves as experts on things that others have studied for decades and still are not certain about. Even Christopher Tolkien presents a set of contradictory facts and cautiously ventures to opine that one might be more plausible than others! I remember having a little modesty when I was an undergraduate, or even a post-graduate, or even today in my dotage!!!! Not on Tumblr! They KNOW everything.