The scene where the children talk about art is one I nearly cut from the book on a couple of different occasions. I worry that this is one of the scenes that contributes overly-much to the "Kiin's family is out of place" feeling that people occasionally get. In addition, I worry that I made Kaise too intelligent here. Three things make me retain the scene. First, I think it's kind of amusing. The second is a spoiler, so I won't say much on it—just let it suffice that I wanted to give Kaise and Daorn some good characterization.
For you spoiler readers, those two would be the main characters of any sequel I wrote to Elantris. I'd set the book about ten years after the ending of this one.
The third reason for retaining the scene is because I put it in, in the first place, quite intentionally. Kaise, and to a lesser extent Daorn, are a small reaction against Ender's Game. When I read that book, and some of Scott's other works (which, by the way, I think are all brilliant) I got to wondering if children who were as smart as his really would act the way they do in his books. Not to disagree with one of the greatest sf minds of our time, but I wanted to take a different spin on the "clever child" idea. So, I presented these children as being extremely intelligent, but also extremely immature with that intelligence. I'm not convinced that IQ brings maturity with it, and think there's only so much "adult" you can have in a kid. So, I put in Kaise and Daorn to let me play with this idea a little bit in Elantris.