This is mostly question of very good level of organization, or if in terms of University disciplines - management and decision making. - They have managed to c

This is mostly question of very good level of organization, or if in terms of University disciplines - management and decision making. - They have managed to create many very sophisticated mechanisms, and run, and still running large command, to support all these mechanisms. Sure, there exists part of technology, to design these mechanisms and to build them, but they all are impossible now, without large and very good organized human forces.