jects can be divided into two big groups, if certain equal external influence is exerted upon them: those with consistent retaliatory actions and those with variable and unpredictable response action. Thus, if we change external influence we then again will get the same two groups, but their structure will change: other objects will now be characterized by the consistency of response actions under the influence of new factors, while those previously characterized by such constancy under the former influencing factors will have no such characteristics under the influence of new factors any more. Let us call the systems those objects consisting of a set of elements and characterized by the constancy/consistency of actions in response to certain external influences. Those not characterized by the constancy of response actions under the same influences may be called casual sets of elements with respect to these influences. Hence, the concept of "system" is relative depending on how the given group of elements reacts to the given certain external influence. The constancy and similarity of reaction of the interacting group of elements in respect of certain external influence is the criterion of system. The constancy of actions in response to certain external influence is the goal/purpose of the given system. Hence, the goal/purpose stipulates direction of the system's performance. Any systems differ in constancy of performance/actions and differ from each other in purposefulness (predestination for something concrete). There is no system "in general", but there are always concrete systems intended for some specific goals/purposes. Any object of our World differs from another only in purpose, predetermination for something. Different systems have different goals/purposes and they determine distinction between the systems. Hence, the opposite conclusion may be drawn: if there any system exists, it means it has a goal/purpose. We do not always understand the goals/purposes of either systems, but they (goals/purposes) are always present in any systems. We cannot tell, for example, what for is the atom of hydrogen needed, but we can not deny that it is necessary for the creation of polymeric organic chains or, for example, for the formation of a molecule of water. Anyway, if we need to construct a water molecule, we need to take, besides the atom of oxygen, two atoms of hydrogen instead of carbon or any other element. The system may be such group of elements only in which the result of their general interaction differs from the results of separate actions of each of these elements. The result may differ both qualitatively and quantitatively. The mass of the heap of sand is more than the mass of a separate grain of sand (quantitative difference). The room which walls are built of bricks has a property to limit space volume which is not the case with separate bricks (qualitative difference). Any system is always predetermined for some pu...
