We of the genus Homo ride the logs that float down the Round river, and by a little judicious "burling" we have learned to guide their direction and speed. This feat entitles us to the specific appellation sapiens. The technique of burling is called economics, the remembering of old routes is called in history, the selection of new ones is called statesmanship, the conversation about oncoming rifles and rapids is called politics. Some of the crew aspire to burl not only their own blogs, but the whole flotilla as well. This collective bargaining with nature is called national planning.