For the last century, the advertising industry has been centered around this cardinal principle: Find the consumer’s problem and fix it with your product. When the problem is practical and tactical, the solution is “as seen on TV” and available at Home Depot. But when the problem is emotional, the fix becomes a new staple in your life, and you become a lifelong loyalist. Coca-Cola makes you happy. A Mercedes makes you successful. Taking your family on a Royal Caribbean cruise makes you special. – WBUR