In this lecture, we introduce several more advanced techniques in Vensim and Insight Maker that help to make simulations more realistic. We start with the formal use of units and unit conversions in models. We then introduce sliders, which allow for expedited exploration over parameter spaces in simulation models. We close with a demonstration of lookup tables, both for creating converters (specified with graphs or tables) from one variable to another as well as tools for introducing changes over time. Making use of Time in Vensim also requires introducing Shadow Variables.
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