Pop music thrives on repetition. You know a song's a hit when you've heard it so often that you'll be happy never to hear it again.

Critics of consumer capitalism like to think that consumers are manipulated and controlled by those who seek to sell them things, but for the most part it's the other way around: companies must make what consumers want and deliver it at the lowest possible price.

If companies tell us more, insider trading will be worth less.

The financial crisis of 2008 was not caused by investment banks betting against the housing market in 2007. It was caused by the fact that too few investors - including all of the big investment banks - bet too heavily on the housing market in the years before 2007.

Older people do a better job of managing their impulses, and so they're better able to put off putting off.

Technology is supposed to make our lives easier, allowing us to do things more quickly and efficiently. But too often it seems to make things harder, leaving us with fifty-button remote controls, digital cameras with hundreds of mysterious features and book-length manuals, and cars with dashboard systems worthy of the space shuttle.

Self-dealing, essentially, occurs when managers run companies to line their own pockets instead of those of the companies' owners. It's been a perennial problem in American capitalism and became a real dilemma when America moved toward a model in which corporations would be run by professional managers who had only small ownership stakes.