JACK TROUT is President of Trout & Partners, one of the most prestigious marketing firms in the United States, with offices in thirteen countries. Recognized as a top marketing guru, Trout popularized the idea of "positioning" products in the minds of customers. He is the author of numerous books on the art of marketing, including Differentiate or Die: Survival in Our Era of Killer Competition and Big Brands, Big Trouble: Lessons Learned the Hard Way, both from Wiley.