If what we're really trying to do is stop the spread of HIV, we need to think about the customer.

Only 3 percent of people in the DRC use condoms.

What is it that you think about just before you get a condom? Sex!

Easterly, a celebrated economist, presents one side in what has become an ongoing debate with fellow star-economist Jeffrey Sachs about the role of international aid in global poverty. Easterly argues that existing aid strategies have not and will not reduce poverty, because they don't seriously take into account feedback from those who need the aid and because they perpetuate western colonial tendencies.

Moyo, a Zambia-born economist, asserts that aid is not only ineffective-it's harmful. Her argument packs a strong punch because she was born and raised in Africa. Moyo believes aid money promotes the corruption of governments and the dependence of citizens, and advocates that an investment approach will do more to help reduce poverty than aid ever could.

Economist and Africa expert Collier analyzes why a group of 50 nations, home to the poorest one billion people, are failing. Considering issues such as civil war, dependence on extractive industries, and bad governance, he argues that the strongest industrialized countries must enact a plan to help with international policies and standards.

If what we're really trying to do is stop the spread of HIV, we need to think about the customer.