Medical tourism can be considered a kind of import: instead of the product coming to the consumer, as it does with cars or sneakers, the consumer is going to the product.

Behavioral economists have shown that a sizable percentage of people are willing to pay real money to punish people who are taking from a common pot but not contributing to it. Just to insure that shirkers get what they deserve, we are prepared to make ourselves poorer.

In terms of productivity - that is, how much a worker produces in an hour - there's little difference between the U.S., France, and Germany. But since more people work in America, and since they work so many more hours, Americans create more wealth.

There are certainly valid reasons for taking a company private, and it's also possible that C.E.O.s perform better when monitored by a small number of owners in a private company rather than by the dispersed and often uninterested shareholders of a public corporation.

The U.S. is excellent at importing cheap products from the rest of the world. Let's try importing some human capital instead.

The fact that cognitive diversity matters does not mean that if you assemble a group of diverse but thoroughly uninformed people, their collective wisdom will be smarter than an expert's. But if you can assemble a diverse group of people who possess varying degrees of knowledge and insight, you're better off entrusting it with major decisions rather than leaving them in the hands of one or two people, no matter how smart those people are.

Standards wars involve lots of variables, and understanding them often seems more an art than a science. They generally involve just two big players, and end in a winner-take-all situation.