Basileus777
Member
The world building in ASOIAF isn't really realistic, GRRM basically dialed everything up to make everything bigger and more fantastical in scale. A lot of thing are done for writer's convenience (ie lack of cities). And one of the more important elements of the series, the weather cycle, is mostly hand-waived away when it comes to how the world is constructed, even though in reality those seasons would have created lifeforms and civilizations completely alien to our medieval world.