ABSTRACT
Scale has traditionally been thought of in terms of the spatial extent and units of observation in a field. This is an excellent convention in the study of physical processes where scale also differentiates between the dominant forces at play. For example at the scale of planetary distances gravitation is the dominant force of interaction and the only thing that matters is mass, while at the atomic level electromagnetic forces dominate and charge of the bodies is critical. In this paper I would like to offer other criteria for scale selection in studies involving the interaction of social and natural systems.
