Vensim® is the software of choice for thousands of analysts, consultants, and researchers worldwide for building high-quality simulation models in business, scientific, environmental, and social systems. Vensim integrates into one environment a powerful suite of tools for developing, testing, interpreting, and distributing models. These tools include cause-and-effect diagramming, graphical and textual model construction, easy reproduction of model structure using subscripts (arrays), Monte Carlo sensitivity analysis, optimization, data handling, and application interfaces. Further features enable advanced model resolution and fidelity. ...