Alison Herman TV Critic Of all the shows that have sought or earned comparisons to “Game of Thrones,” most have emulated its genre conventions. From “The Lord of the Rings: The Rings of Power” to “Foundation,” fantasy and science fiction series have thrived in recent years, riding on the momentum of a blockbuster hit that proved lore and maps weren’t just for fan conventions. But in writing “A Song of Ice and Fire,” the source material for the HBO drama, author George R.R.
