NFX readers will notice a new name appearing in their RSS feeds. I’m delighted to welcome my coauthor  Andrea Castillo to the blog. When she isn’t coauthoring with me, she’s coauthoring with more eminent scholars such as Florida State’s Randall Holcombe  (don’t miss their excellent forthcoming paper on the ways cronyism manifests itself in various economic and political structures). And when she isn’t coauthoring with anyone, she is keeping the Mercatus trains running on time as a program associate . You will soon discover, as did I, that she is a superb writer and a gifted researcher. As exhibit A, see her first post  on the mortgage interest deduction.