The UK Commission on Employment and Skills has just published an excellent report, Growth Through People.  It sketches out, in considerable detail but in clear language, the puzzle of how the UK has a high level of employment; relatively high levels of high level skills, measured by graduate level qualifications; but low productivity levels.  Productivity, as yesterday's budget yet again showed, is crucial to our general prosperity. The most important implication of the UKCES analysis is to shift the focus from simplistic assumptions that boosting the sheer numbers of highly qualified people is a solution to our economic problems, to a much more nuanced and complex consideration of how skills are…