This article is the result of a project conducted during my tenure with the Expanded Food and Nutrition Education Program (EFNEP). Before my hire, the director of EFNEP had hired a geographic information system (GIS) technician to create a GIS to spatially depict EFNEP clients' accessibility to food resources. By visually representing the relationship between low-income populations and the localities of food stores in Baltimore city, the GIS powerfully illustrated the relative lack of food resources in low-income areas of the city, suggesting serious obstacles to food access. However, when conceiving this type of GIS, it is essential to recognize that although geographic information systems can suggest potential hypotheses, drawing causal relationships between represented variables is problematic because GISs ignore the many behavioral and perceptual factors that affect human beings' decisions. For this reason, I was hired on a four-month contract to conduct an exploratory ethnographic project to complement the GIS.

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