At the Readercon talk on dealing with diversity (panel notes), the speaker brought up the idea of cultures having either high or low contexts, judged by the amount that people within the culture can take for granted in talking to each other. She went on to say that you can have SF about high-context cultures, but you can't have high-context SF, because you need a way in to the society.
Being a contrary sort, I immediately tried to think of examples of high-context SF. The first that came to mind was Doctorow and Rosenbaum's Hugo-nominated novella "True Names", which struck me as self-consciously SF 301 or even higher, that is, assuming a whole lot of prior knowledge of the field and making no concessions to catch you up.
What do you all think? Am I not understanding the terms properly? What about high-context fantasy, is there anything different there?