...because it's so bloody thick.
The new Wheel of time book (The Gathering Storm, if you haven't been paying attention) is big even for a WoT book.
It is 766 pages long. And that doesn't include the glossary.
However, I can totally understand Sohmer's sentiments.
I am feeling in this book the fun and excitement that was in the early books. And I'm not yet out of the Prologue/Introduction yet.
And there's two more books to go.