“…2;Lang, O'Neill, and Hallman 2003;Cook, Pieri, and Robbins 2004;Demortain 2013.) However, as many observers of the controversy have noted, opponents are as concerned about social, economic, and political issues as they are about health and environmental issues (Sagar, Daemmrich, and Ashiya 2000;Stone 2002;Sarewitz 2004, 398;Herdt 2006;Thompson and Hannah 2008;Bronson 2010;Piesse and Thirtle 2010). Specifically, some observers argue that GM crops -especially in terms of issues amenable to quantitative assessment, such as health or yields -serve as a "surrogate" or a "proxy" for a much deeper controversy about the global food system (Nestle 2010, 141ff;Johnson 2014;Thompson 2014).…”