Imagine for a moment a river, ever winding its course. It does not matter what sails upon it, nor what swims beneath it, for it will always flow. Upon the bank at one point in the river sits an old man, who is tasked with watching over it. There are some who sail near him and converse with him, and he finds merriment in this. But as the river flows on, they are carried beyond sight and sound of the old man, and he remains in his spot. The cycle repeats countless times. People and objects sail near to him, but only for a few moments, before they are carried away by the ever-flowing river once more. Yet there the old man remains, an eternal warden.