Evaluation is well stocked with knowledge about how to evaluate programs in terms of systems. Our stock is much less when it comes to evaluating the logic of the systems themselves. But separating the two and then bringing them back together can advance our understanding of both programs and systems. This assertion is illustrated with four examples: 1) causal chains, 2) stocks and flows, 3) network development and structure, and 4) complex systems with an attractor/equilibrium focus.
Evaluation Uncertainty 