Perry Marshall is a renowned marketing strategist, author, and speaker, best known for his expertise in digital advertising and business growth. As the author of the #1 selling book on Google AdWords, Marshall has helped over 100,000 advertisers save billions in "AdWords stupidity tax." His work on the 80/20 Principle is used by NASA's Jet Propulsion Labs at the California Institute of Technology. Marshall founded the $10 million Evolution 2.0 Prize, aiming to solve fundamental questions in artificial intelligence and the origin of life. With a background in electrical engineering, he has consulted in over 300 industries, integrating sales, technology, art, and psychology. Marshall's "Ultimate Guide to Facebook Advertising" is now in its third edition, reflecting his ongoing expertise in social media marketing. He lives with his family in Chicago and continues to be a sought-after consultant and expert witness in search advertising litigation.