https://www.know-why.net/model/CaLIsTKbVf7Yg5bm8yRXGyg discussed there and with an accompanying paper here: http://www.economics-ejournal.org/economics/discussionpapers/2017-82 (discussion paper) and peer reviewed here: Kai Neumann, Carl Anderson, and Manfred Denich (2018). Participatory, explorative, qualitative modeling: application of the iMODELER software to assess trade-offs among the SDGs. Economics: The Open-Access, Open-Assessment E-Journal, 12 (2018-25): 1–19. http://dx.doi.org/10.5018/economics...