Once you have a blueprint down, you start talking to all the other heads of department to see if and how they can help to execute what you've imagined, and so things change and evolve. And then you have to make it work within the budget and time frame, so things change even more.

Each creative choice you make has 'x' many impacts on budgetary choices, which in turn have 'y' many impacts on your subsequent creative choices. They feed each other.

While most episodes have a beginning, middle, and an ending, finales on 'Game of Thrones' are just one ending after another after another, as each of the storylines needs to wrapped up or at least attended to in some way.

Miguel Sapochnik Quotes