QUOTE (Doc Byte @ Aug 6 2009, 05:44 PM)

Compare this with Heinlein's definition of SiFi:
Heinlein!
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1. The conditions must be, in some respect, different from here-and-now, although the difference may lie only in an invention made in the course of the story.
Of course there are those Sci-Fi stories where the events are the same but the explanations are different.
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2. The new conditions must be an essential part of the story.
So any story that uses a future setting as a back drop is not sci-fi. Good-bye any deeply focused human-interest. After all, the Starship Troopers film (based on Heinlein's own novel) uses the sci-fi elements as barely more than an allegory. You could tell the same story and make the same point with out any sci-elements. So, er, Starshipt Troopers not Sci Fi, then?
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3. The problem itself - the ‘plot’ – must be a human problem.
In what sense a human problem? A problem on the scale of humans, loves lost and jealousies, and all that? Well that's Contact out, then. Or a problem affecting humanity. Well that's a wide-range of sci-fi that deals with small groups or individuals then. Or that it merely must contain "humans"? Well then that rules out some of the more esoteric sci-fi that takes place entirely in an alien setting or one that lacks humans at least (e.g. a machine planet).
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4. the human problem must be one which is created by, or indispensably affected by, the new conditions.
See point 2.
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5. And lastly, no established fact shall be violated, and furthermore, when the story requires that a theory contrary to present accepted theory be used, the new theory should be rendered reasonably plausible and it must include and explain established facts as satisfactorily as the one the author saw fit to junk. It may be far-fetched, it may seem fantastic, but it must not be at variance with observed facts, i.e., it you are going to assume that the human race descended from Martians, then you’ve got to explain our apparent close relationship to terrestrial anthropoid apes as well.
So any science fiction lacking sufficient explanation of how certain things are possible is not sci-fi? Well that's half of it then. I may not like Star Trek for its lack of scientific rigour (amongst other reasons), but I wouldn't try and claim it wasn't sci-fi.
To summarise: Pah! ; )
K.