I'll never forget something Lloyd Biggle Jr. wrote in the intro to a short story. It went something like this: given a group of people in a sewer, the mainstrea

I'll never forget something Lloyd Biggle Jr. wrote in the intro to a short story. It went something like this: given a group of people in a sewer, the mainstream author will lovingly write about those who stay there. The SF author will write about those trying to get out.