On the simplest level, telecommuting makes it harder for people to have the kinds of informal interactions that are crucial to the way knowledge moves through an organization. The role that hallway chat plays in driving new ideas has become a cliche of business writing, but that doesn't make it less true.

When Americans think of college these days, the first word that often comes to mind is 'debt.' And from 'debt' it's just a short hop to other unpleasant words, like 'payola,' 'kickback,' and 'bribery.'

Sometimes even a smart crowd will make a mistake.

The profit motive, indecorous though it may seem, may represent the best chance the poor have to reap some of globalization's benefits.

From a social point of view, it's beneficial that homeownership encourages commitment to a given town or city. But, from an economic point of view, it's good for people to be able to leave places where there's less work and move to places where there's more.

Being unemployed is even more disastrous for individuals than you'd expect. Aside from the obvious harm - poverty, difficulty paying off debts - it seems to directly affect people's health, particularly that of older workers.

The paradox of Steve Jobs's career is that he had no interest in listening to consumers - he was famously dismissive of market research - yet nonetheless had an amazing sense of what consumers actually wanted.