At least in this study there is an empirical result to shoot for (see page 28 of the talk below)
https://www.ipam.ucla.edu/publications/chs2007/chs2007_6818.pdf > > In particular, > by equivalencing the recruitment of gang members in the sociological > problem > with the planting of trees in the environmental problem, the observed > statistics of gang populations and their prevalence can be derived. > > ============================================================ FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College lectures, archives, unsubscribe, maps at http://www.friam.org
