The point of system dynamics is not predicting the numbers--it's understanding the system. If you look at historical data over time and see values increasing, decreasing, and remaining steady, it would be nicer to have an endogenous understanding of what causes those changes instead of extrapolating based on the historical data. When you understand _how_ the system works, then you can reason about where the leverage points are.
I always loved that the biggest leverage point in any system is to change the system itself!
I always loved that the biggest leverage point in any system is to change the system itself!