A human life, just like other matter, is essentially a chain of cause and effect. An effect in the space of variants is always situated close to its cause. In the same way, one follows the other, the near lying sectors in the space of variants assemble into a life track. Scenarios and decorations of the sectors found on the same life line are more or less uniform in their quality. The human life moves evenly along its track until there is an event that introduces a substantial change in the scenario and decorations.