The Daily beast runs an excerpt from The Knockoff Economy — this one’s about the battle between Rebecca Charles, the chef/owner of NYC’s Pearl Oyster Bar, and Ed McFarland of the neighboring Ed’s Lobster Bar.  Charles says that McFarland, who used to work for her, stole the recipe for her signature Caesar salad.  But can a Caesar salad be copyrighted? And is Pearl hurt if Ed’s copies it?