Nature's choreography - time - is a navigational strategy. The passage of time guides change, as is shown here when this liquid water had turned to ice. External conditions have altered the physical state of the water, transforming it to no longer shape to Bruce Lee's teacup. Rather now, it holds it's own shape, momentarily, as I watch the front end of this frozen river drip back to flowing. Loch of Lintrathen, Scotland. 12 December 2007.