Wheeler and Yardley suggest that "popular" and "genre" fiction is where today's action really is. No surprise from Wheeler, who has long been known as one of the most literarily accomplished writers of novels set in the Old West (in other words, books commonly derided as "Westerns"). But Yardley is part of the Eastern establishment that has often scorned writing from elsewhere as mere "regionalism."
I don't know if they're correct, if the future of literature is 'genre.' (Maybe it's 'film', or 'narrative nonfiction', or even 'greeting cards'.) But I'm delighted that Wheeler has chimed in on the argument. His later posts have built on it, giving his blog a wonderful thematic integrity.
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