Are Jammie Lannister and Bran Stark the key to Game of Thrones / A Song Of Ice and Fire

Valarian Steel: A Unified Theory for Game of Thrones and A Song of Ice and Fire

It is an interesting theory. Knowing George R.R. Martin's science fiction background, I always thought there was more going on in these books than "magic." 

But what is the Lord of Light R'hllor in GoT? Almost certainly it is a reference to a work by a science fiction writer that Martin greatly admired and cared for. But is it more than that in the book and TV show?  

Roger Zelazny's Lord of Light, involved an interstellar colony from Old Earth, where individuals through science become essentially reincarnated demigods. They impose a Hindu caste system (they originally came from India) and keep the underlings in their society in a medieval level of technology. Sound roughly familiar? That and the main character in that story happens to be named Sam: 

His followers called him Mahasamatman and said he was a god. He preferred to drop the Maha- and the -atman, however, and called himself Sam. He never claimed to be a god, but then he never claimed not to be a god.

Samwell Tarly has been speculated to be the narrator of GoT/ASOIAF. Maybe there is more to him than that.

GoT only has seven episodes to resolve all of this.  Not a lot of time for a tv show, but this is more like an approximate 10 hour long movie remaining.

Why hasn't technology advanced in Game of Thrones / A Song of Ice and Fire

I doubt Varys motives are as pure as he claims:

Smitty/Darleen: Friday Fiction