Have you ever walked the streets of London. On a day when it hasn’t quite rained, but it sure looks like it will. Up ahead in the sky there is a wash of light grey cloud. Behind you go the rows of red brick brownstones, corner pubs, cobblers and candy shoppes. And you walk and walk and walk, past a white palatial mall or an embassy, until you reach a green field, and lie down on the grass of the park and stare straight up at the sky until the first few wet splotches hit your face. That’s a free-day. A day that you were free to walk, and wait for rain.