Generational change within a genre is hard to parse while it's happening. Only in retrospect can the passing of the baton from ancestors to progeny be clearly discerned.

Every new generation of SF writers remakes cyberpunk - a genre often laced with dystopian subtexts - in its own image.

Thomas Pynchon surely inaugurated or crystallized a new genre in 1963 when he published 'V.' The seriocomic mystery or thriller with one foot set in the present and one in various historical eras received its postmodern baptism from Pynchon.

The entire Internet, as well as the types of devices represented by the desktop computer, the laptop computer, the iPhone, the iPod, and the iPad, are a continuing inescapable embarrassment to science fiction, and an object lesson in the fallibility of genre writers and their vaunted predictive abilities.

The SF genre, of course, is really an organically evolved, marketplace-determined, idiosyncratic grab bag of themes and signifiers and characters and icons and gadgets, some of which hew to the realistic parameters and paradigms embraced by science, others of which partake more of fantasy and magic.

War has always been a part of science fiction. Even before the birth of SF as a standalone genre in 1926, speculative novels such as 'The Battle of Dorking' from 1871 showed how SF's trademark 'what if' scenarios could easily encompass warfare.