When people move, they don't just spontaneously lose the skills or talents they had before. The belief that they do is one of the ideas that contaminates and corrupts our discussions about immigration. If a wave of refugees were to leave Hong Kong overnight (in response, say, to an invasion by the Chinese People's Liberation Army), you could basically drop them in a corner of Montana and they would pretty quickly regain their footing. We shouldn't be afraid of immigration from *anywhere* out of fear that it will cost us. Most everyone becomes *more* productive by moving to a place like the United States, not less. And that benefits us all.