In this version of Gizmo, we have collected all three strategies (recording activity, inhibiting components, and stimulating components) together, and allow you to orchestrate the strategies to figure out the mechanism:

The third common strategy in modeling a phenomenon is to stimulate the components directly. In this version of Gizmo, we provide a device (the lightening bolt) to allow for this strategy.

Try this by holding the stimulate icon over the left unit and clicking. Even with all the buttons on the control panel turned off, Gizmo’s legs start moving. What must be going on is that the left post is now active just as it would be if the right inputs had been received from the control panel.