Mechanincs of energy.
When any energy flow, with a predermined direction and medium, is obstructed by a force which is not indigenous of the system, the flow degenerate its nature into a twisted reality. Untill the flow functions; say: untill there is tension between the extremes which are attracting the communication;the flows continues and, to bypass the obstruction, it has to find alternative ways to resolve itself,
say: to bring the amount of energy the system requires for its existance.