That is exactly what Germany did with its scientists in the 1930s/1940s. I am not attempting to draw any parallels between governments or ideologies here. My g

That is exactly what Germany did with its scientists in the 1930s/1940s. I am not attempting to draw any parallels between governments or ideologies here. My goal is to state the obvious: such a self-inflicted brain drain has happened before and it will happen again unless we learn from history, which we (humans) rarely do.