First, Lord Turner, head of the UK's Financial Services Authority, put the cat among the pigeons by questioning the social utility of much financial innovation. Then Paul Volcker declared that the only financial innovation that had impressed him over the past 20 years was the automated teller machine. Yet, despite these reservations the world remains remarkably tolerant of anti-social behaviour in the markets and in the wider business environment.

Exhibit A is high-frequency trading. This type of computerised dealing exploits the millisecond gaps between news events and their impact on the markets. With the regulators sitting on their hands, such trading has expanded rapidly to the point where, on some estimates, it accounts for 60-70 per cent of the trading volume in US equities. Much of this volume is conducted by a very small number of companies.

A big reason for concern is that exchanges appear to have joined in an unholy alliance with this small group, which is allowed to see orders before the public. In effect, these people are privileged insiders who are profiting at the expense of those who are innocently saving for retirement and what have you.