even after studying in the elite instituions after completing IIM or IIT, many of all category are just catching the next flight beyond Indian borders, after draining all the local resources and enriching for onward journey, as well even the studies can happen abroad so the flight will be nearer to the destination point than crossing the Bay ofBengal or Arabian Sea /Atlantic Ocean !! brain drain before local education is more preferable as more deserving non-draining candidates will stand a fair chance ....
