I do agree those people are good in hard sciences. I did those exams and they're hard. About your comment about putting people in positions because of those di

I do agree those people are good in hard sciences. I did those exams and they're hard. About your comment about putting people in positions because of those diplomas, it's also because of the network you acquire at those kinds of schools, and cronyism. Granted, this kind of cronyism is less worse than in others countries where it can be more pernicious and less official :-)