As for Malaysia the issue is not the brain drain. To me doesn't matter where the brain located. The important thing, be it in US, UK, Australia or Singapore, the 'gone' brain must be able to contribute to their 'country' through their diasporas. Secondly, how to measure that the 'gone' brains were really a lost of opportunity to Malaysia. In other word, can we measure that the development of Singapore is partly contributed by large number of Malaysian brains in the Republic? If yes, how much? If we didn't know the number, the whole story about Malaysian brain drain is merely a theoretical.