The present note raises the issue of how best to interpret the World Bank's (WB) much used "constant USD per capita income" concept and similar series. We find that the guide to its construction appearing on the WB data portal to be sketchy. The procedures essentially convert all host-country...

The argument by Piketty and others that there is growing inequality and this is causing damage is not new. But regardless of who is running this argument, it is significantly flawed. The poor have definitely improved their situation, especially if taxes and income support are included, in many...