Stock and Flow Simulator

Here we assemble Stock and Flow segments to build a computational model that we evaluate below. github

We can turn on and off parts of a large simulation by merging their parts into the composite graph we feed into the simulator.

We run 90 steps, thinking of them as days in a quarter. Then reset to initial conditions and run again.

We'll speed this up and plot each run fast enough that you can get a good sense of how the controls interact.

See World Modeled upon which we might test our own notions of modularity.

Tom Fiddaman's model library. site

Comparison of system dynamics software. wikipedia

The Euler method is a first-order numerical procedure for solving ordinary differential equations with a given initial value. wikipedia