In anticipation of the UN MDG summit (20-22 September 2010), I have put together a "Sustainable Development Simulation" (SDSIM), using the "system dynamics" method, to analyze trade-offs between social/human development priorities and economic development priorities. The simulation nodes are human population, human consumption, energy consumption, cumulative pollution, biosphere integrity, climate integrity, ecological capital, financial capital, social capital, and human capital. I have just posted the simulation model and user interface, as follows: Sustainable Development Simulation (SDSIM) Version 1 General Description http://www.pelicanweb.org/solisustv06n08page1supp3.html User Interface http://www.pelicanweb.org/solisustv06n08page1supp4.html or http://forio.com/simulate/manager/luisgutierrez/sdsim-v1-1950-2200/run.html Any comments would be appreciated, especially regarding the still tentative definitions of social and human capital. I would be grateful if you forward this notice to anyone who might be interested. If anyone has the STELLA software, I would be happy to send you the .STM file, which includes the user interface, the complete flow diagram, and the annotated list of equations. I need some critical reviews to determine if my work is on the right path toward something that could be useful to analyze trade-offs between social/human development priorities and economic development priorities. Cordially, Luis Luis T. Gutierrez, Ph.D. The Pelican Web (http://pelicanweb.org) Editor, PelicanWeb's Journal of Sustainable Development A monthly, CC license, free subscription, open access e-journal