But someone that could provide enormous value in the future, might not qualify today. It is also a harm in the terms of brain drain. There should be very little

But someone that could provide enormous value in the future, might not qualify today. It is also a harm in the terms of brain drain. There should be very little doubt on the fact that any restriction will harm everyone in that 'ladder of skill'. It particularly harms those who would acquire those skills later on and dont have them today.