“According to Harvard University’s Atlas of Economic Complexity, the key to driving economic growth is not so much individual experts as the combination of expertise required to make complex products: for example, the mix of experience in batteries, liquid crystals, semiconductors, software, metallurgy, and lean manufacturing required to make a smartphone. The fastest way to secure this array of talent is to import it. The same idea applies to more and more fields in an age when even cooking has become culinary science.”