The U.S., with much greater capacity, shows a similar pattern of improvement in share from inputs to outcomes, he writes.

FORBES: British Researchers Now Outpace U.S. in Their Impact

The most successful social brands have strategies for getting their customers to share passion, ideas, and service, and they drive real business outcomes in the process.

FORBES: Why Facebook Can't Be The Center Of Your Social Strategy

But they are a third less, as a share of GDP, than America's, and the country's excellent health outcomes should be the envy of American reformers.

ECONOMIST: Reforming American health care