For soccer fans, it&`&s easy. For the rest of us? Not so much, especially since the U.S. team didn&`&t qualify. So here&`&s what to watch for even if you have no team to root for. Because the World Cup isn&`&t just a gargantuan sporting event; it&`&s a microcosm of human foibles and (yep) economic theory brought to life.