They are like little children's paper boats. Somebody makes them, folds them out of paper, and lowers them into the water, where they are picked up and carried by the current and wind. These boats swim down the stream, imagining they are in control, but in reality, they are not. They proceed in their downstream journey, thinking they are the captains of the ships, without knowing that the journey end is based only on the quality of the paper they are made of, how strong the stream is, and which way the wind blows...