Fifty years ago, today, the Berlin Wall was built, separating the city into two parts.  I've been to the beautiful city of Berlin several times.  I was in Munich when the wall was torn down, visited Berlin when the new German government center was just a hole in the ground (with pumps draining the water our of the "big dig" site), and again last year for the Delphi Tage (Delphi Day).  In 1989, I remember watching TV and seeing people using sledgehammers, chisels, metal poles, cars, trucks, and t...