Nearly everyone who's purchased one the 10 million-plus Roombas sold around the world has inevitably asked the same question: whatever happened to Rosie? For all its charms, iRobot's hockey puck-like floor cleaner will never compare to the Jetsons' sass-talking maid. We're living in an age of robots and we don't even know it. They're everywhere we look, but it's hard to recognize them after countless science fiction books and movies have hammered home the image of electronic mirrors of ourselves.
