The appearance of the buttocks (secondary roots) turned out to be the most important stage in the evolution of life on Earth comparable to the birth of single-cell and later multi-cell. The primary roots (such as the freshwater hydra) had a hole with a single hole that performed the functions of the mouth and buttocks. Because of this design, the percentage of nutrient absorption to exclude self-poisoning was extremely low. Immediately after the appearance of the second hole (probably on the side, as in a rubber oak) there was a differentiation of the functions of these holes. One is mouth, the other is ass. And thus, long before Ford, Mother Nature created the first conveyor that allowed to significantly increase the percentage of food absorption. The persons who found the ass were the first to get free time from the production of food, and after giving in to the mystery of the association, they quickly displaced the spoiled fellow tribes. An equally important consequence of the coming into the world of the existing ass was, in addition to the osymmetry of the bodies of the secondary roots, the formation along the primitive tract of food absorption of the hordes, the front of which became the brain. Since then, all the most important organs of any secondary roots have developed in the circumstances of the mouth and buttocks - the hands in order to grab the proviant to the mouth, the legs in order to reach it, the penis in order to attach to the female. Some individuals obtained an external skeleton - so the tanks appeared, the rest of the internal - became special forces, in the fleet and aviation were recruited individuals with both external and internal skeleton. and Amen.