The Accidental Adversaries structure represents a situation where two interacting entities which should produce growth unwittingly limit the growth of each other because of their actions to promote their own growth. See also Archetypes.
A Growth and Underinvestment structure is simply an elaborated Limits to Growth structure where the growth inhibitor is part of another Balancing Loop with an external standard and some delay. The real nasty thing about this structure is that the two Balancing Loops form a single Reinforcing Loop which inhibits growth.
Faced with a performance gap the two most obvious responses are to work harder or work smarter. There are trade offs associated with each, some obvious, some not so obvious.
There are limits to what one can infer from a qualitative model. It is typically beyond the capacity of humans to infer the behavior of complex situations with 2 or more feedback loops.
Part 1 demonstrates Picture primitives and Links to create representations of interactions. These are made visually attractive because the Picture primitives are overlay'd with images.
The limits to results structure endeavors to bring a balance between a current state and a desired state though more often than not the action is limited by some constraint. See also Archetypes.
Our actions are based on our beliefs and the results of those actions are the basis for our beliefs. The difficulty we create for ourselves is that we make assumptions as to how to interpret the results we select based on our beliefs. As a result we are often operating on a flawed perspective of reality.