Here I must admit that I'm the one who started down the whole tangent when I said (probably in less coherent words) that I felt like An Na was one of the only people who could have told the story she did in A Step From Heaven because she had lived the experience of a young Korean immigrant to the United States. Last semester we read Sherman Alexie's The Absolutely True Diary of a Part-Time Indian, and the same points were raised about Alexie's background enabling him to portray something that no one else could portray.
While I'm sure that some people might make that claim, I'm not attempting to say that John Green should not have written a book about teenagers with cancer. But I do believe that authors who have lived the experiences they attempt to portray automatically write from a position of authority. We trust that their stories are legitimate because their experiences are legitimate. Essentially, these authors have a leg up on other writers of realistic fiction. Authors who do not come from such backgrounds must work harder to convince the audience that the story they tell is (in a literary sense) true to the world they portray.
Speaking more generally about voice, this goes to the idea that you (the writer) are the only person in the world that can tell the stories that you tell, in the way you tell them. Steven Schwartz, in "Finding a Voice in America," argues that "writers don't get very far in finding their voices until they are willing to face the intersection of their unique experiences with that of the larger culture." You are the writer you are because of the person you are.
I stand by my original statement. I don't believe that anyone but An Na could have written the book she did. It's a remarkable story, and one that she makes me believe. That doesn't mean that anyone who isn't a Korean immigrant to the United States shouldn't write a story about Koreans immigrating to the United States. I just think that there is a material difference between people who are and people who are not--and that anyone who doesn't have that cultural experience must work even harder to find a voice that rings true to their audience.
What do you think? Should writers back off of subjects they have no cultural attachment to, and if so, why?