So why doesn’t Hephaestus know that the book is Tizzy’s Book it is certain that with the amount of time they had to be together to make Doom he would have seen Tizzy’s Book constantly and know what it is and does and also know that the power of the book comes from Tizzy’s Macanations and being reminded of what to do with the Book so the Book without Tizzy doing his work is worthless it seems to me.