It just occurred to me... what reason does Lavellan have in the beginning of the game to see Solas as a great source of knowledge about elves?
Of course, it starts with her asking his "opinion", but every further branch is spoken like one would ask a teacher. Are the other Dalish clans like mine? What are city elves like?
But the weirdest part is asking him about ancient elves. Nobody knows much about them, if anything at all. Why would the apostate have anything to add?
And then Lavellan keeps going. What was their magic like? What was the source of their immortality? And then I'm like, "... Why do you think he knows?".
Forgive me if I seem to be getting carried away, I'm just trying to figure this out.
Well, one of the first things a Dalish Inquisitor learns about Solas is that he's had past (unfriendly) encounters with their people. And if Solas really was just a random apostate who saw the past through the Fade, he would still probably the only one who's likely to know anything about ancient elves, out of everyone in the Inquisition.
Not to mention... I mean, it's not like Inquisition's conversation system is a perfect representation of how people converse in real life. I doubt Lavellan and Solas only had three casual conversations over the entire course of events of the game - but chats about his taste in tea or his possible sweet tooth don't provide much insight into his character. So I guess I considered it as sort of... filtered? Like, they didn't only talk about spirits and elves, but the devs put only those conversations in because they're the most relevant to Solas' character. Similarly, you could infer that the Inquisitor asked everyone about the ancient elves, and Solas was the only companion who didn't shrug and go "iunno," so the devs choose to actually show that conversation.