"H.G. Wells said that his method was "to trick his reader into an unwary concession to some plausible assumption and get on with his story while the illusion holds." Such prestidigitation is a characteristic ploy of science fiction: to make a nonexistent entity or impossible premise acceptable (often by scientific-sounding terms such as telepathy, extraterrestrial, cavorite, FTL speed) and then follow through with a genuinely realistic, logically coherent description of the effects and implica."