To improve global health, it's not enough just to have a really good new product and to obtain marketing approval. You still need to market the product and bring it to patients, follow up, create the infrastructure, and so on - the whole pipeline, the network. That's something that companies are extremely good at: organizing a whole pipeline in a cost-effective way.

Dictatorial regimes often manage to keep themselves in power because they are recognized by foreigners as representing the state and its people, and therefore as entitled to sell the country's natural resources and to borrow money in its people's name. These privileges conferred by foreigners keep autocrats in power despite the fact that they were not elected and do not rule in the interest of the population.

It seems far-fetched, even preposterous, to blame the global economic order for the persistence of severe poverty in countries that are ruled by obvious thugs and crooks.

Countries compete in offering easy working conditions to their banks. In many jurisdictions, you can deposit money anonymously with no questions asked, even if the accepting bank knows that it derives from criminal activities.

The World Bank is the monopoly provider of poverty data and, partly due to a leadership change there, the World Bank's reporting has been heavily on the rosy side since about 2000. The Bank's cultivation of an upbeat picture affords a very interesting lesson in statistics and how you can, depending on which numbers you present and how you present them, create a more positive or more negative impression of the evolution of poverty.

Poverty persists, essentially, because the people at the bottom - the bottom quarter and also the bottom half - see the gains from the rising global average income wiped out by severe declines in their relative share.

There is at the global level a very small number of actors who can meaningfully weigh in on global institutional design, who are able - through powerful governments and most effectively through the government of the United States - to exert substantial influence on international negotiations, which are routinely conducted behind closed doors.