The other lesson that I would like to draw from history concerns what is called the optimal fragmentation principle. Namely, if you've got a human group, whether the human group is the staff of this museum, or your business, or the German beer industry, or Route 128, is that group best organized as a single large unit, or is it best organized as a number of small units, or is it best fragmented into a lot of small units? What's the most effective organization of the groups?
It turns out that the German beer industry suffers from small-scale production. There are 1,000 little local beer companies in Germany, shielded from competition with each other because each German brewery has virtually a local monopoly, and shielded from competition with imports. The United States has 67 major beer breweries, producing 23 billion liters of beer per year. Germany has 1,000 major beer breweries, producing only half as much beer per year as the United States. That's to say that the average brewery in the U.S. produces 31 times more beer than the average brewery in Germany.