A book on these entities depicts a “zoo” of them to explain concepts such as “shifting dominance.” Jay Forrester developed tools for analyzing the “dynamics” of these entities along with the Club of Rome as part of the World3 project. John Gall added the suffix -antics to the name of these entities in a book about their failures. A Donella Meadows primer titled for “Thinking in [these entities]” explained the analysis behind her report The (*) Limits of Growth and defined these entities as elements, interconnections, and a function. In a theory named for these entities that often includes cybernetics, they reach a “steady state” with no change over time, (10[1])and experience (10[1])“feedback loops.” For 10 points, name these connected sets of inputs and outputs that name an interdisciplinary field. ■END■ (10[1])