Start with something that is interesting.
Here we see that workforce is oscillating and moving toward equilibrium and we want to understand why. For each of the windows that follows the highlight indicates the variable that is about to be selected into the Workbench.
àà 
àà
àà 
àà
àà 
àà
We have gone full circle and found a feedback loop. In this model the workforce is hired in response to inventory shortfall, and after they are hired, they build inventory. The problem is that workers are being hired as long as there is any inventory shortfall, which means that when inventory comes into balance, the workforce (and therefore production) are at their peak and exceed sales. There is more discussion of this in the chapter on Oscillations in the Modeling Guide.
