Ants
Mark, Interbank FX, told me a story about how ants get food back to their nest. When an ant first finds food to bring back home, he takes as much as he can home. On the way home he leaves a sent trail so that he and others can find the food. In doing so, he does not leave a strait trail home, it is a crooked one. In the process of time it because strait because other ants get of the trail and make a new one, on accident.

