God this is good. I mean REALLY good.
I mean really really REALLY GOOD.

It's so much better than canon it's downright embarrassing.

“The shore to the north is dotted with tribes of ice-fishermen, who speak a language completely foreign to any in Alagaësia. In the winter, they crack holes in the sea-ice to cast their lines, and in the summer, when the sea-ice melts, they go out on boats with jagged spears and hunt whales.”

Niddings??

That question itself is further than many ever go. I don’t think Eragon has ever had the insight to make the leap from ‘why am I right?’ to ‘could I be wrong?’”

BAM. And that's the core of Eragon's problem right there, really. He doesn't think about things and he has zero insight - into himself, or anyone else. Let alone lacking the slightest bit of empathy for other people, he apparently managed to find his True Name without learning a damn thing about the sort of person he is.
That or he did see the truth about himself but was too much of a coward to accept it and therefore chose denial.