people would go back thought to reunite with their families in their places of birth, and htis would be after having gotten experience and skill and education. it just would be very counter-intuitive. I am seriously considering a return myself, after gotten an MA and PhD here and 5 years of work experience in the health sector of all things.maybe government just didn't want to bring in that many parents and used this void lottery thing as a good tactics to waste some quota?