Harvard Economist Dani Rodrik described how "Unconditional convergence is alive and well, but that we need to look for it within manufacturing industries rather than the economy as a whole. Industries that start at lower levels of labor productivity grow faster, regardless of the quality of policies or institutions in their home economies." For more, see Professor Rodrik's blog: http://rodrik.typepad.com/dani_rodriks_weblog/2011/09/unconditional-conv....