"Most of what I do is science fiction. Some of the things I do are fantasy. I don't like the labels, they're marketing tools, and I certainly don't worry about them when I'm writing. They are also inhibiting factors; you wind up not getting read by certain people, or not getting sold to certain people because they think they know what you write. You say science fiction and everybody thinks Star Wars or Star Trek."

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If, however, one factor is too successful, it will continue to be the winning factor regardless of the variation in the other factors over the range of variation in the conditions, and therefore will stifle the development of other advantageous factors until the conditions change sufficiently that it no longer is the winning factor. At this point, the whole population is ill prepared for the change, and may well perish entirely if the winning factor accidentally becomes the matching factor for a disease or a predator.

— Erik Naggum