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.

Real politics is messy and morally ambiguous and doesn't make for a compelling thriller.

Linux is a complex example of the wisdom of crowds. It's a good example in the sense that it shows you can set people to work in a decentralized way - that is, without anyone really directing their efforts in a particular direction - and still trust that they're going to come up with good answers.

You'll sometimes hear from people that they actually do a better job of getting their work done when they have a lot of other obligations - in effect, it removes the possibility of procrastinating.

What corporations fear is the phenomenon now known, rather inelegantly, as 'commoditization.' What the term means is simply the conversion of the market for a given product into a commodity market, which is characterized by declining prices and profit margins, increasing competition, and lowered barriers to entry.

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.

The world's central banks and the International Monetary Fund still have vaults full of bullion, even though currencies are no longer backed by gold. Governments hold on to it as a kind of magic symbol, a way of reassuring people that their money is real.