System Dynamics Question Leaders

I am confused about looking at historical events versus designing social systems for future consequences.  I am probably not going to get this exactly correct with the appropriate words but here is a possible response to what Chad Green wrote about. I would rather have system scientists influence public policy over the next 10 years in a way that gets America started on a different path so that future system scientists can use counterfactual questions to show how outcomes might have been worse if America had not taken action prior to 2020.

snip:
"What we need now is system thinkers who are more than willing and able
to ask the tough counterfactual "what if" questions that no one is
asking publicly.

I will call them Question Leaders."

From Wikipedia (edited):
"Counterfactual questions seek to explore history and historical incidents by means of extrapolating a timeline such that certain key historical events did not happen or had an outcome that was different from what did in fact occur. The purpose of this exercise is to ascertain the relative importance of the event, incident or person the counterfactual hypothesis is negating."

Here is what I'm thinking:

For example, a system scientist in the future will be able to explore historical records on global warming to show how America's outcome could have been different or records on fossil fuel resources to show how America fiddled while the resource collapse could have been predicted. Then the system scientist would ascertain the relative importance of key events not happening, such as what is described in the book "Merchants of Doubt" or how a different outcome could have occurred.

The counterfactual hypothesis for global warming might be that America did endorse the Kyoto Treaty and began reducing CO2 emissions, building renewable energy and growing the economy based on non-fossil fuel energy fast enough to avoid catastrophic consequences.

However, Dr. Forrester's message seems to focus on future system scientists designing social systems to mitigate future unintended consequences.  Chad seems to suggest present system scientists might use historical case studies as a learning tool to change the quality of people's mental models now. Maybe combining each into an overall strategy might help system scientists now and in the future.