of object motion or state. It is this detection that gives rise to the view of a particular significance of causes and effects for a phenomenon under study, along with the conviction that causal connections are non-symmetric. Causality is treated as such a relation in the material world that plays a key role in explaining the topological, metric and all other world structures.

Today we imagine space-time as a world, manifold or [*set*]{} of elementary (atomic) events. An elementary event is a phenomenon whose extension in both space and time may be neglected. It is assumed that all phenomena [*consist of*]{} elementary events. An event is like a point in Euclidean geometry: it is indivisible, or primary. Such an approach allows us to repeat Euclid’s way and to arrive at a geometric theory of space-time.

The manifold of events should represent the material world around us. The matter exists in no way than in motion that manifests itself in bodies’ influence upon each other. So events also affect each other. Attempting to follow the process of influence, we simplify the interaction picture, concentrate out attention on changing states and thus distinguish causes and effects. So the world appears before our 