This does not mean that markets for distribution services function perfectly or even that they function well. It means that given current environmental conditions, technology, and know-how, it is0 difficult for a given manufacturer to get better operating results than can be delivered by the level of third-party services available to the manufacturer. It is noteworthy that the argument is strictly comparative, not absolute. And it does not mean that there is no room for improvement; however, improvement, under current environmental condition, would require the manufacturer to introduce