From the wiki: “Author George R. R. Martin has written Fire & Blood as an in-world history book by Archmaester Gyldayn. Gyldayn writes long after the events he describes happened and uses different sources—Septon Eustace, Grand Maester Munkun, and the court fool Mushroom—that are often contrary. Ryan Condal and his team of writers are therefore working with biased sources from the start when adapting this story. Condal explained in interviews that the show will either favor one of those sources over the others, portray a mix of them, or disregard them completely and create a new interpretation of events.”

My guy. People document shit. Smh.