Fig. 2.. The different types of approaches to combine empirical information and agent-based modeling (sources: top-left figure is an adapted version of a remote-sensing image of Monroe County, Indiana, USA created by Cynthia Croissant, Laura Carlson, Glen Green, Tom Evans, Shanon Donnelly, and Charles Winkle; top-right figure is based on Fig. 1 of Cederman (2002); bottom-left photo is provided by Francois Bousquet; and bottom-right photo is provided by James Russell of the Interdisciplinary Experimental Laboratory at Indiana University.)