The Gottfredson article is effectively a case study on comparative advantage and hidden costsand how the identification of each can elude management attention for a long time. Refer back to the arguments you created for Assignment 5(a)--Parts 1-3 and apply them to the facts related to 7-Eleven. Specifically, create a narrative about why the changes implemented by Jim Keyes worked to "discover" comparative advantage and hidden costsand thereby dramatically improve the value creation offered by 7-Eleven (and the profits that naturally followed). Ground your narrative in the inter-related concepts of comparative advantage, opportunity cost, and specialization.