At the heart of globalisation is a basic, and politically explosive, mystery; globalisation proceeds through the breaking down of boundaries, the unfolding of diversity and freedom of choice – so why is it experienced by so many people as a constriction, an oppression and a loss of freedom? In a brilliant and subtle book*, a Harvard graduate student has solved this mystery – even if he has not solved the problem. David Singh Grewal believes the answer lies in something called “network power”. Networks are the means by which globalisation proceeds. All networks have standards embedded in them. In theory we can choose among the standards and become more free. In practice, Mr Grewal shows, our choices tend to narrow over time, so that standards are imposed on us.

Here is how it works. Networks tend to grow. As time passes, one of the most attractive things about a network will be simply that a large number of people have already chosen it. This is network power. Once a network reaches “critical mass”, Mr Grewal says, the incentives to join it can become irresistible. Certainly some standards are intrinsically better than others. “But as the network power of a standard grows,” Mr Grewal writes, “the intrinsic reasons why it should be adopted become less important relative to the extrinsic benefits of co-ordination that the standard can provide.” People defect from alternative networks. Eventually those alternatives disappear altogether. The choice of networks becomes a Hobson’s choice. You remain free to choose your network, but the distinction between choosing to join a network and being forced to join one is less evident.