Academically, the Chen Ravallion analysis appears to give a fair picture, because it takes into account population growth (assumably population decline too). Not only that, the PSiM uses lower poverty line. However, we at ACRO have a different line of thinking which is based on common sense and natural justice, or perhaps better said, based on present realities as far as Africa, SSA, ic concerned. It is basically wrong for Africa (SSA, to use your designation) to be poor in the first place, because nature had endowed it with abundance both in terms of natural-material and human resources. But those with might and power had pillaged it openly at first and continue to do so systematically at present.(Africa's human resources was pillaged by slavery and its natural resources by colonialism, neocolonialism and unfair trade etc. Africa, SSA, exchanges usual natural resources and food items for weapons and ammunitions and in most intances its ruling elite transfer the country's resources to be kept in Western and Eastern banks). It is ACRO's view that justice, democracy and the rule of law are very cardinal to fight poverty and improve equality among the peoples of any African nation, any nation of the world for that matter. Once these conditions prevail in Africa,ie. SSA, with the complete exclusion of any heavy-handed external actor of any form or nature that plays a negative role in the process, there could be tremendous transformation in Africa towards betterment. A greater role could also be created for the WB and the UN to contribute positively in this respect. Finally, there is what we call in ACRO, the tolerable income gap, that should be maintained in SSA in particular and the developing countries in particular. For instance, using your study as $1 - $1.50 a day for the most minimum, the income gap between the poor and the wealthy SSA businessman/woman, politician, minister etc. could be calculated by deducting the former figure from that of the latter. How much is the gap? 10, 20 or 1000 times? And how much should be tolerated? Here, the idea is not to discourage business but institute fair means of taxation, and a matter of finding a means of retrieving stolen resources from the corrupt politicians, and the like as well as practising equity and justice in the remuneration system both at the private and public sector. In this line of thinking and reasoning, many an anomality could be tackled in each and every African country, SSA.