Aid works! No it doesn't!

In a debate on the BBC News website, Frederik Erixon explains:

The new 'big push' of development aid has been tried many times before but always with dismal results. The call for redoubling aid to eradicate poverty has been responded to many times over, but it has never delivered what it promised.

Jeff Sachs retorts:

Aid works, when it is practical, targeted, science-based and measurable. Hence, we have seen the successes of immunisation campaigns for children in impoverished countries, against diseases such as polio, diphtheria, and measles.

The discussion gets as deep as it can, given 600 words a side - worth a quick look.