Blockchains for all What are these enthusiasts on about? The 'blockchain' technology behind bitcoin could prove to be an ingredient of an entire new world of technology, as big as the internet itself, a wave of innovation that drives the middleman out of much commerce and leaves us much more free to exchange goods and services with people all over the world without going through corporate intermediaries. It could radically decentralise society itself, getting rid of the need for banks, governments, even companies and politicians. Take