On another thread earlier I asked whether the History of Middle Earth books were canon. It was suggested it was not. It got me wondering is the Silmarillion canon? At the end of the day it was comprised and put together by Christopher Tolkien and not JRR Tolkien himself. I also read somewhere that JRR Tolkien was still revising and had unfinished material for Silmarillion. When Christopher Tolkien came to compiling the Silmarillion he actually selected more revelant manuscripts rather than the more recent ones. What's everyone's thought on this?