The walled gardens have grown into walled cities with some concentric walls and all kinds of "Checkpoint Charlies" to restrict movement in & out of the free wor

The walled gardens have grown into walled cities with some concentric walls and all kinds of "Checkpoint Charlies" to restrict movement in & out of the free world, or even nearby neighborhoods. Unless of course all your documents are completely in order and you agree to update them everywhere you go with a detailed record of all your travels, as verified by real-time electronic surveillance. Don't even think about "No Man's Land". "And then there's the negative side . . ."