GoT isn't like Foundation at all, though. Game of Thrones had plenty of action and tense character moments that all happen within a relatively short period of t

GoT isn't like Foundation at all, though. Game of Thrones had plenty of action and tense character moments that all happen within a relatively short period of time (within the character's lifetimes/generations). Foundation is about decades of time so adapting it directly like they could with GoT isn't really possible, imo. Also, we don't know yet but, for all we know, Hardin might learn what the meaning of that saying is by making the very mistake it's cautioning against. After all, in the show, the line was given to her father who then follows through on his plotline (trying to be vague, here). So maybe it's not a betrayal of the source material as much as it is going a bit further back to establish why Hardin keeps that saying. Considering Goyer was involved with Man of Steel and felt like it was pivotal to establish Superman's "no-kill" rule as a result of being forced to kill, I wouldn't be surprised if we see a similar beat of character growth here.