 Over the last 30 years, in the last 30 years, over the last 30 years, over the last 30 years, in Sub-Saharan Africa, we've learned a lot about income and wealth inequality because we increasingly have more data available to study the question. And what we're finding is the experience really is quite diverse and varies across the 48 countries in the region. The second thing we've learned is that when we think about inequality in Sub-Saharan Africa, we want to think broader than income and wealth inequality. Particularly, we're increasingly looking at intergenerational persistence in education and job opportunities. And here what I mean is the opportunity of the son of a farmer to take a job in a factory or the daughter of a woman who's never been to school to actually complete secondary schooling. And that type of education and job opportunity channels are very important for thinking about income and wealth inequality. I think some of the big questions in Sub-Saharan Africa on inequality relate to the link between poverty reduction and inequality and the link between economic growth and inequality. And what we find across countries in the region is not always a straightforward story. So we're not consistently finding that economic growth comes with increasing or decreasing inequality. And we don't always find that increasing or decreasing rates of poverty reduction are associated with systematic change in inequality. And so there are big questions remain. If you look across countries, what are the country level experiences and why are they so different? Over the next 30 years. Over the next 30 years. Over the next 30 years, I think we're going to see a blossoming of research on inequality, particularly in dimensions beyond income and wealth inequality. And this is partly because we increasingly recognize that different types of inequality are important for development outcomes and also because we have better data. And so I think the combination of recognizing the importance of a topic and the data to study the topic will mean a growth in research and knowledge in this area. For Sub-Saharan Africa, I think what has been a major factor in determining income inequality in the region has been the sources of economic growth. And in the last decade or so, a lot of it has come from natural resource revenue, including oil commodity prices. Looking forward, the macro situation for Africa will change. And with that will come a change in inequality. If economic growth becomes larger for the type of income activities that the poor do, if we can get agricultural productivity up, these sorts of changes could shrink income inequality in Africa.