“This should explain something I've been saying (and writing) for over ten years now: Science fiction is not about the future; it uses the future as a narrative convention to present significant distortions of the present. And both the significance of the distortion and the appropriateness of the convention lie precisely in that what we know of present science does not *deny* the possibility of these distortions eventually coming to pass. Science fiction is about the current world - the given world shared by writer and reader. But it is not a metaphor for the given world, nor does the catch-all term metonymy exhaust the relation between the given and science fiction's distortions of the given. Science fiction poises in a tense, dialogic, agonistic relation to the given, but there is very little critical vocaabulary currently to deal with this relationship of contestatory difference the SF figure establishes, maintains, expects, exploits, subverts and even - occasionally, temporarily - grandly destroys.”