Dear Ed, thanks for your feedback.
Indeed, high population growth is nor a curse, especially if it is happening because people live longer not because they have more children. We have written about the Africa’s and the global demographic dividend before to precisely highlight this point:
This blog just makes a simple point which most people interested in develop already knew: GDP growth has a different effect on people’s welfare even if you assume no changes in equality due to differences in population growth. The contribution of the blog is that it gives you the numbers for the world’s main regions since 2000.