Consider the level of car-purchasing knowledge Dr. South has recently acquired that will never pay capital gains or real dividends or enhance the productivity of his business. He now has knowledge about every Porsche dealer within a four hundred-mile radius of his home. Dr. South also can tell you immediately the dealer's cost on nearly every Porsche model, the cost of options and accessories, and the performance characteristics of most models. It takes much time and effort to acquire such information. Dr.