If conditions are static or stable and the system works, why innovate? The stock “innovation” is most useful if there is another stock. The second stock might be “contextual change”. It may be that the useful measure is, does the innovation address the change? If not, the innovation evaporates, or goes away. If it does match, it disappears through a process of acceptance and habituation. The second level questions become what are the triggers to innovate, what sorts of contextual elements should be monitored, what is the process by which the innovation comes to fruition, etc. And the final questions might be, what happens if there are no innovations that match or ameliorate the change?