Great book about how to view the world and why we often miss the bigger picture. The answer is systems.
Balancing feedback loops are goal-seeking or stablity-seeking. Each tries to keep a stock a ta given value or within a range of values. A balancing loop opposes whatever direction of change is imposed on the system. If you push a stock too far up, a balancing loop will try to pull it back down.
A reinforcing feedback loop [...] generates more input to a stock the more that is already there (and less input the less that is already there). A reinforcing feedback loop enhances whatever direction of change is imposed on it.
Reinforcing loops are found wherever a system element has the ability to reproduce itelf or to grow as a constant fraction of itself.