The economic illusion is the belief that social justice is bad for economic growth.

It is more than a little ironic that "capital accumulation" once a rather tendentious Marxian view of a supposed capitalist obsession, should have become - of all things - Wall Street's own slogan.

For over a century, popular struggles in the democracies have used the nation-state to temper raw capitalism. The power of voters has offset the power of capital. But as national barriers have come down in the name of freer commerce, so has the capacity of governments to manage capitalism in a broad public interest. So the real issue is not "trade" but democratic governance.

Not surprisingly, extensive effort in Britain and America goes into finding tax shelter. the system is "efficient" for the shelter industry, not for the economy.

But of course you can have your cake and eat it, too - if you decide to to bake a second cake. And you may well find that baking two cakes does not take twice the work of baking one.

What do you call an economist with a prediction? Wrong.

Both rich and poor nations have a common stake in policies that put the globe on a sustainable development path. The conflict is less between poor and rich countries than between the broad interests of people and the narrow interests of extractive industries. We need to find our way towards some kind of global regime that reduces emissions of the greenhouse gases, but well-off nations need to transfer the technology to make this possible, rather than viewing this shift as one more opportunity for private industry to profit.