That there exists in nature varying layers of processing or interactive phenomena which might be on the one hand considered as relatively dependent subsystems, yet on the other hand, these layers are invariably interfaced to one another. Yes that is a good assessment to start with. Nature is the one absolute containing physical entity that is made up of an endless amount of similar, related, layers. Nature is THE inertial frame. It is the unmoved mover.
Layers interact with each other in an effort to achieve mass equilibrium.
Opposing objects are as also opposing layers but they are all releated extensions of the whole, and an individual object is at the same time, a similar layer. An individual object is also comprised of similar opposing layers, ie. A cloud is a cell, is made up of similar cells. This fact is extremely valuable since it allows you to reduce complicity to this simplified level. You can understand what any theory is really pointing to if you can apply this.