As I have been following the conversation I think we have done a great job of academic side of the egg and defining how nutritious it is and important to get into the diet, I hope we can start focusing on the development side and how to afford the egg so it can get into the diet. Thus I would like to return to the exercise is introduced into my initial comment about "hart choices: compromises in quality Nutrition". Has anyone downloaded and attempted to the exercise and for the poor of the world relying on heavy manual labor as their only economic opportunity tried to see what the compromises are in including or excluding the egg for the diet or the children’s diet. The exercise link is:  http://smallholderagriculture.agsci.colostate.edu/1028-2/