I think it is meant in the sense of ‘brain-drain’, here is the example:
The term brain-drain was introduced by observing the emigration of the various technologists, doctors and scientists, from various developing countries (including Europe) to more developed nations like USA. Now this phenomenon of brain drain has a conversed effect for a country in which people are getting migrated and brain-drain of a nation becomes brain-gain for that particular country. Usually all developing countries including India are suffering from brain drain and developed countries like USA are having brain gain from this phenomenon
http://www.thegeminigeek.com/what-is-brain-drain/
The translation workplace 
peer agreement (net): +1
