Perry MarshallPerry Marshall is one of the most expensive business strategists in the world. He is endorsed in Forbes and Inc. magazines and has written eight books. At London's Royal Society, he announced the world's largest science research challenge, the $10 milion Evolution 2.0 Prize. His reinvention of the Pareto Principle is published in Harvard Business Review, and his Google book laid the foundations for the $100 billion pay per click industry. He has a degree in electrical engineering and lives with his family in Chicago. Read More Read Less