Twenty per cent of American children grow up in poverty, and that means they get inadequate nutrition, inadequate health care, and because we have a very local education system, they get inadequate access to education. With those as a starting base, you perpetuate inequality. That's why, here in New York, Mayor de Blasio has made a big deal of trying to focus on preschool education, because by five years old, there are already huge differences. We've finally begun to recognize it.

I trace the inequality to a particular set of decisions that we took when we lowered the tax rate from 91% down to very low levels at the top, where we stripped away regulations. So the result of that was not a more dynamic economy, but a more unequal society. We tried the experiment of trickle-down. A third of a century later, we can say fairly definitively that it was a failure.

GDP tells you nothing about sustainability

Amherst is a liberal arts college, committed to providing students with a broad education.

There have always been two theories about inequality. One is that it reflects just deserts. The other is that there are large elements of exploitation and inequality of opportunities. The evidence is overwhelmingly that the increase in inequality is associated with those negative factors. If it were all social contribution, then when the top did better, they would be contributing to everybody's well-being. That trickle-down hasn't happened. We've seen median income, people in the middle, actually worse off than they were 25 years ago.

Finance ministers and central bank governors have the seats at the table, not labor unions or labor ministers. Finance ministers and central bank governors are linked to financial communities in their countries, so they push policies that reflect the viewpoints and interests of the financial community and barely hear the voices of those who are the first victims of dictated policies.

The IMF insisted that both Russia and Brazil maintain their currency at over-valued levels. Who are you protecting when you try to maintain that exchange rate by having high interest rates? You're protecting domestic and foreign firms that have gambled on the exchange rate. And who is paying the price? The small businesses that did not gamble [and no longer can afford loans], the workers who are going to be put out of jobs.