The Physical Set - in totality - effectively transcribes Earth's natural processes that consolidate as a planetary 'Pull Mechanism'.
Figure III-I. The Bi-Pedal Mechanism
The bi-pedal mechanism of the normative physical set therefore, conforms to the primary energy cycles of planet Earth according to the fundamental evolutionary and physical biases.
Maintenance, pre-determined by the geo-centric electro-magnetic radiation; and
Diversity, denoted by the helio-centric radiation.