Argumentative essay on Issues Concerning Economic Inequalities in America. Needs to be 8 pages. Medina, John, The genetic inferno: inside the seven deadly sins, Cambridge University Press, 2000. Print. His essay apparently provides a lot of parameters that promote greed but does not seem to provide any scientific grounding on why this happens in any society. The element that may support this outlook can be seen from the fact that no real scientific evidence has been established as to why a particular individual, a group, society or even animals succumb to this concept of greed. John Medina, in his book ‘The genetic inferno: inside the seven deadly sins’ specifically focuses on the aspects of greed and the resulting avarice. “The problem is that no one has ever found a gene for avarice in human beings. No one has ever found a region in the human brain exclusively devoted to greed for that matter” (Medina. 110). Medina is a molecular biologist and hence considered for this paper as an eminently qualified person to provide opinions and suggestions on the topic under study. The book is published by the Cambridge University Press and one that has an established reputation. The only negative factor seen in the text is that no peer-reviewed work in the book. But even so, the author with his qualifications and the backing of the Oxford University can be seen as a valuable source of secondary literature regarding this study. The lack of scientific evidence as to what constitutes greed has been established in the book. Edney, in his essay also does not purport any claim in this regard.