The Feedback Pattern signifies dynamic adjustments. It is one aspect of the more foundational Pattern, Dynamics. Feedback illustrates any process that acts on itself to either increase or decrease an activity level through a causal loop. The rate and strength of feedback looping needs to be balanced with the level of adjustment required. The role of Feedback is to make dynamic adjustments.
The principle of causal loops: the enduring health and evolution of any system depends on the appropriate balance and integration of the amount of feedback with the size of adjustments, for a given context.