LOL....not the Grimoires again!!! And what do they explain actually? Do they tell what's the purpose of the Fallen, Cabal, The Hive and Vex in our solar System? From where they come from, are they the minions of The Darkness , if so why are they fighting each other. And most important of all. ....how did Earth end up losing everything?Where the invasion originated, the course of battle on every planet, where there survivors? Have they retreated to Earth?what the traveler actually did to save the Last City from impending doom?