I did a lot of this through writing flashbacks. Many of the flashbacks took place at Cal's school and I eventually cut them because they didn't seem essential and they slowed the pace of the story in the first third of the book. They were essential to me, though, in that I learned about my characters.

At Ucross I learned that I am capable of focusing deeply for long periods of time. I love to write. I don't think I would have said that before this trip.

With my students, I don't offer any simple tips like that, maybe because my own process is pretty messy, but when we workshop we talk a lot about the deeper subject, which is what the story or novel is about. I think defining a narrative's themes can lay bare a narrative's tensions.

I am not sure I knew what I was doing, writing an "apocalypse" novel, when I started this book. Now that the book is done, I can own that I have in fact written an apocalypse novel, one that speculates on a dark, dark future. Why I did it, I really don't know - every time people read my work they comment on its darkness, its sadness.

I am not sure how a novel changes the world. I think it alters a reader's perspective by asking him or her to see the world through another consciousness. That can perhaps cause people to see their own lives differently. Or just give a single day, a single moment, a slightly different sheen.

Oh my goodness, I hate camping. I am like Frida times 1,000. I have always been attracted to wilderness stories, à la the movie Badlands, when Sissy Spacek and Martin Sheen are in the woods on the lam - maybe because it scares me a little.

I am glad it's [California novel] resonated with people because, for me, most apocalyptic novels aren't scary, because they feel so very far off.