Robot cage fights are pretty sweet--who doesn't like seeing machines armed with spinning sawblades flamethrowers fight to the death--but medieval robot wars are so much more fun. Think about it: Hand-built robots catapulting rocks at castles, trying to breach their defenses. George R. R. Martin couldn't come up with something that crazy. But some 1,500 high school kids in Southern California did, coming together for an epic battle last month during the Los Angeles regional championship of the "Super Bowl of Smarts." Now, the thought of a robot war set in the Middle Ages probably brings to mind all the worst stereotypes of geeks and nerds and dweebs.