Please allow me to draw you a picture of a very small world. Iwant you to hold up your hand and imagine it a bowl made of clay.Open your fingers a little and see how the years have worn away at therim. Cracks and chips produce a very irregular pattern. Now fill half ofthe bowl with sand and dip the opposite side into some water. As thewater seeps threw the cracks and begins to swirl in the sand, filling thissmall world; look around it anew, and see as I do....