Highway 103 between Halifax and Bridgewater is surely the dullest drive in Nova Scotia. For the last three or four years, motorists forced to traverse its dreary confines have enjoyed momentary comic relief near the Tantallon exit, in the form of a car-sized, more-or-less cubical rock outcropping, painted as a Rubik's Cube. "A jumbled Rubik's Cube fixed in stone, really heavy stone," said West Dublin resident Peter Barss, who waxed philoshical about its deeper artistic significance: A monumental monument to confusion and frustration? A puzzle that never changes… and can never be solved? An implied order, an order that can never be realized?...