ting for its lot because it does not see the surrounding situation, does not know the forecast and it does not have corresponding decisions regarding specific situations. That is why the systems emerged with more complex control blocks (Animals and humans) which can anticipate a situation and protect themselves from destruction. Animals know about space and see the situation around, because they have more complex control blocks. They can compete very effectively with mineral and vegetative media. But competition between the animal species has placed them in new circumstances. Now it is not enough to have only complex control block and to see the surrounding situation. In order to survive it is not enough only to be able of scampering or be strong physically, it is necessary to better orient itself in space and better assess the situation and be able to make conclusions of own failures in case of survival. For this purpose it is necessary to develop control blocks. The more complex the control block, the higher is the degree of safety. And now it is not physical strength which is a criterion of advantage, but cognitive ability, i.e. the more complex the control block is (the brain with all its hierarchy of neural structures), the better. Knowledge is virtue. At that, the purposes of metabolism in animals and humans are the same as in flora, ie reproduction of systems and reproduction of elements of systems. Hence, in process of evolution advancement to ensure higher degree of safety of systems, the possibilities of regeneration in the form of metabolism were supplemented by intellectual possibilities of control blocks. Regardless of what kind of nature the system belongs to (Mineral, vegetative, animal or human) one of its main purposes is always to preserve itself and its structure. But in mineral nature there are only passive ways of conservation, whereas in the organic nature active ways of conservation do exist: self-organization at the expense of purposeful metabolism. Therefore, struggle for food has always been the foundation of existence. But metabolism only is not sufficient. Therefore, in animals new active ways of protection are added: assessment of external situation and protection from the destructive external influences (complex reflexes, behavioral reactions). However, complex reflexes are not enough either, as it is necessary also to learn new situations and be able of making new decisions (reflexes to new stimuli/exciters). But these appeared to be insufficient as well because of limitation of personal experience. Therefore, personal experience was supplemented by collective experience for the account of the first signaling system (conditioned reflexes: the first signaling system, complex behavioral reactions). And as far as the lifespan of each system is limited, in order to transfer experience to the subsequent generations second signaling system emerged which allows to save personal experience of each syst...
