From Triton (1976) by Samuel R. Delany:
The Web of possibilities is not simple – for either abstract painting, atonal music, or science fiction. It is the scatter pattern of elements from myriad individual forms, in all three, that gives their respective webs their densities, their slopes, their austerities, their charms, their contiguities, their conventions, their cliches, their tropes of great originality here, their crushing banalities there: the map through them can only be learned, as any other language is learned, by exposure to myriad utterances, simple and complex, from out the language of each. The contours of the web control the reader’s experience of any given s-f text; as the reading of a given s-f text recontours, however slightly, the web itself, that text is absorbed into the genre, judged, remembered, or forgotten.