It seems more and more people are severely allergic to items that have been dietary staples for millenia. In the past, if the community member couldn't eat what everyone else ate they would either starve or die from the anaphylaxis. We are a much kinder people than our ancestors and have a wider range of foods. But should the problems of the weaker members of the species dominate the entire population? Do peanut free classrooms strengthen the gene pool?