A survey released this week revealed the American public to be skeptical that teleportation, lunar colonies or automated weather control will be achieved in the next 50 years. Yet another sci-fi scenario seemed more probable: Half of us are prepared for the dawn of artworks by computer Picassos, Brontes and perhaps even Baryshnikovs that can pass for human creations. This level of optimism, at a time when robot artistry is still in its infancy, says more about our increasingly cozy relationship with technology than it does about the state of the gadgetry itself. …