I spent yesterday standing upon the side of a road and marveled at how much like a river it was. There was traffic flowing in both directions and for a brief moment I was able to look at each passer by as they traveled. Some of them wore sunglasses or were talking on a phone and in one case someone was eating a banana. I knew from my education that underneath the asphalt and concrete were various pipes for the transit of water and removal of sewage, as well as lines above that were used to transport energy and communication. I allowed the rush of wind behind each car to wash over me like the wake of a boat.