WE rank almost everything. The top 10 restaurants in our vicinity, the best cities to visit, the best movies to watch. To understand whether the rankings were any good you’d want to know who was doing the ranking. And what it was they were looking for. These are exactly the same questions that are worth asking when looking at the international ranking of universities. SHARON FONN, Professor, School of Public Health, University of Gothenburg Sweden, University of the Witwatersrand Ranking universities started a couple of decades ago. Since then they have become omnipresent, presuming importance and validity. Institutions, especially those…