The Common Foundation Underlying Physical and Social Systems - Jay W. Forrester 

Perhaps people are not using it these days for much beyond computer apps or engineering. There aren't many current books applying it to other things like social problems or organizations etc. There are other modelling techniques, so maybe SD died out in interest beyond engineering or technology with Meadows and Forrester passing, I don't know of course this is just a speculation.

The conant-ashby theorem states that a regulator is only as good as the model of regulation it contains, pretty evident. Now ask yourself, do the models we hold in our social and economic institutions adequate enough to regulate society and the economy? Of course not The biggest flaws we have at a global level are time delayed information, void based scientific analysis (which means it does not include the environment), an economic system that sections off based on companies and states for the benefit of those companies and states, and lastly a growth goal based economy. The solutions would be, respectively... -A real-time communication information system with integrated computer analysis, managing Earth's resources (look into the VenusProject) -Systems thinking integrated into science (which includes economics) -Allowing people to enable work among themselves for themselves (democratic workplaces), teaching systems science to management, and having a proper meta-language that intergrates all human firms (look into the Viable System Model) -Having a goal of homeostasis with our Earth The most important indicator for course correction is the goal we seek. If our goal is to rape and kill the environment then we are damn well succeeding. If instead it were to be in equilibrium we shall see we have strayed much too far.

Well, i would say that precise and powerful models are computing demanding. In these days, they were discoverying digital computation, and took many years of development in computation architecture and hardware, but i would say that artificial intelligence systems like alphafold 2 are a demonstration of what we will see in terms of models of the reality, what will exponentially increase as it develops.

1988

Forrester, J. (1988). Lecture: The Common Foundation Underlying Physical and Social Systems; Applications of System Dynamics. MIT James R. Killian, Jr. Lecture Series.