This is an incredibly interesting read for me, although I'm only a third of the way through or so. I tend not to extrapolate the vast histories of super-rich worlds like Martin's while actually reading the books, so I just love a book like this that forces the world itself and it's history into the fore. On the other hand, I have been obsessing over the seasons and their lengths since I first started reading Game of Thrones, and I flat out refuse to accept the explanation put forth in this book. Not from George R. R. Martin. I'd accept that sort of chicanery from a lesser writer but he just sit himself down and come up something better, cuz I'm not buying it.