For instance, one of the costs of the war is that soldiers today get very seriously injured but stay alive, and we can keep them alive but at an enormous price.

Unfettered market American-style capitalism doesn't work. Developing countries can't afford that kind of luxury. They just can't afford it. Period. If there's a mistake, they can't afford to put out $2 trillion.

Negative effects on the economy were covered up with a flood of liquidity from the Fed. That,plus lax regulation, led to a housing bubble, a consumption boom - but we were living on borrowed money. It was inevitable that there would be a day of reckoning, and it has now come. We will be paying the costs "with interest".

During my three years as chief economist of the World Bank, labor market issues were looked at through the lens of neoclassical economics. A standard message was to increase labor market flexibility. The not-so-subtle subtext was to lower wages and lay off unneeded workers.

Macroeconomic policy can never be devoid of politics: it involves fundamental trade-offs and affects different groups differently.

This Iraq war has been the most "privatized" war in America's history. It has seen the most extensive use of contractors. The contractors have increased the costs; but they have been necessary - the military simply could not have done it on their own. we would have had to increase the size of the military. But the George W. Bush Administration wanted America to believe that it could have a war, essentially for free, without raising taxes, without increasing the size of the armed forces.

We noted the psychological problems facing many of the returning from Iraq veterans - of the 700,000 returning veterans, more than a 100,000 have been diagnosed with problems, but the numbers are likely to get worse, as those with multiple deployments return. We should have valued the loss of life as a result of these suicides, using the same procedures we used for the loss of those who died in combat.