Chris Anderson is a guru of the information age. Under his editorship, Wired, the voice of the digital world, has won zillions of prizes. His speeches on the economics of the internet command vast sums. He's a brilliant journalist; I know that, having worked with him before he was a big shot. But it is as an author that Anderson has gained most fame. He writes, broadly, about how digital technology has made the world a better place. His first book, The Long Tail, was hugely influential. In the bricks-and-mortar world, it said, in which the costs of marketing and distribution are high, companies make money by selling vast quantities of a few blockbuster items. In the digital world, in which the costs of marketing and distribution are low, companies can make money by selling small numbers of lots of different items.