The buzz about Google these days is that it's like America itself: still the biggest game in town, but inevitably and irrevocably on the decline. Both are superpowers with unmatched resources, but both are faced with fast-growing rivals, and both will eventually be eclipsed. For America, that rival is China. For Google, it's Facebook. (This is all from tech-gossip blogs, so take it with a grain of salt. They also say a startup called MonkeyMoney is going to be huge next year.) But here's the difference: staring down the inevitable, America pays defense contractors to build aircraft carriers. Google pays brilliant programmers to do whatever they want.