Question: Given that north of the Wall is snow and ice with mostly pine trees as vegetation, how do the thousands of Wildlings feed themselves? There are no crops and no game. The same for the Dothraki. How do they feed their thousands of horses in desert country?
Answer: The Free Folk hunt and fish, which is why they own a lot of fur and pelts. The Dothraki do not live in a desert, they live in a grass sea of lush flat plains. Their city of Vaes Dothrak also allows foreign traders to sell them food and fodder. He Dothraki also engage in slavery, another economic avenue.
Question: Is there any place in the books, movies, or directly from George R.R. Martin to say why the Game of Thrones world has such unpredictable seasons? Magical, Scientific, Alchemical (ie in-between).
Chosen answer: Well Magic does come to mind. The White Walkers bring with them the winter. Because of this, the seasons are very unpredictable. "Winter Is Coming" refers to this.
Question: Why were so many actors in this show recast? If the showrunners knew they would be using certain characters for multiple seasons, then why not lock them in long term?
Chosen answer: Considering the show was in production for nearly a decade, it is hardly surprising that many characters were recast. Actors constantly move on to other jobs, creating scheduling conflicts. Some may not want to be tied to one project for so long a period, particularly for relatively minor roles that paid little money. As some characters became more prominent, the producers did recast a few roles with better-known actors. For example, Max Von Sydow replaced the actor who originally played the Three-eyed Raven. Some actors voluntarily left for personal reasons. Jennifer Ehle was originally cast to play Catelyn Stark but dropped out because she'd recently given birth. Other actors claimed they were replaced for "political" reasons. Here is a website with a rundown of which actors were replaced and why: https://screenrant.com/game-thrones-characters-recast-new-actors-every-why/.
Question: Is Cersei Lannister based on Lady MacBeth and Agrippina the Younger? Both were ruthless and ambitious with Agrippina being the mother of Nero. Cersei, mother of Tommen Baratheon. She, on the show, pushed for her son to become king as did Agrippina, so was inspiration drawn from her and Lady MacBeth?
Answer: There is game north of the wall. Mostly rabbits and dear. Where do you think they get all that fur? Also fish near the coast. As for the Dothraki, we see tall grass and other trees, that could provide food for both the Dothraki and their horses.
MasterOfAll