There are lots of people who believe there may be at least some genetic component to procrastination, and even if there isn't, it seems to be the case that procrastination habits are often set relatively early in life (that's certainly the case with me). But I also think that there's lots of evidence that external tools can help quite a bit in getting people to stop procrastinating.

Making loans and fighting poverty are normally two of the least glamorous pursuits around, but put the two together and you have an economic innovation that has become not just popular but downright chic. The innovation - microfinance - involves making small loans to poor entrepreneurs, usually in developing countries.

The Xbox 360 is the best game console ever designed. It's fast and powerful - games look as good on the 360 as on high-end PCs that cost six times as much. It's easy to navigate and has lots of useful secondary features - the ability to play digital video, stream MP3s, and so on.

The challenge for capitalism is that the things that breed trust also breed the environment for fraud.

In industries where a lot of competitors are selling the same product - mangoes, gasoline, DVD players - price is the easiest way to distinguish yourself. The hope is that if you cut prices enough you can increase your market share, and even your profits. But this works only if your competitors won't, or can't, follow suit.

The history of the Internet is, in part, a series of opportunities missed: the major record labels let Apple take over the digital-music business; Blockbuster refused to buy Netflix for a mere fifty million dollars; Excite turned down the chance to acquire Google for less than a million dollars.

The fact that industries wax and wane is a reality of any economic system that wants to remain dynamic and responsive to people's changing tastes.