I keep making this joke about how I should write an essay entitled something like "How I Read 400 Bad Fantasy [or SF] Novels In One Year." (I think one of the contributors to the Again, Dangerous Visions compilation did in fact do something like that, which is where I suspect I got the name from. Anyone who can find additional details, please send them in. My copy of A,DV went missing ages ago and I'm too cheap to replace it because I keep thinking it'll turn up on me when I clean house.)
The joke, as with many jokes, has a grain of truth to it. A big part of why I wrote Summerworld was because I'd grown so disgusted with all the reigning clichés of fantasy, decided to systematically invert them, and use the alleged limitations provided by the systematic inversion as new forms of inspiration. If that sounds like a mouthful, try this: I stood the whole thing on its head and looked for what fell out of its pockets.