I was toying with the idea of having to give up writing SF in the relatively near future, not because I wanted to but because I felt I’d have to. I t… - Iain Banks

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I was toying with the idea of having to give up writing SF in the relatively near future, not because I wanted to but because I felt I’d have to. I think you get fewer ideas as you get older, and even though you get better at using and developing the few you do have, that’s not enough. Written SF relies heavily on ideas—you can write a perfectly good mainstream novel with no original ideas at all; you just have to tell an interesting story with interesting characters who have something to say. I don’t mean that as a criticism either: that encompasses perfectly valid, rich, and rewarding literary forms, but you can’t get away with that in science fiction. You have to have completely new ideas in there somewhere or it doesn’t really cut it as proper SF, and I was concerned about that.