My fourth very good thing is imports, one of the most misunderstood.
A common fallacy supposes that nations become rich by exporting more than they import. Many governments make the effort to augment exports and diminish imports. This usually involves subsidizing exports by means of grants and lower taxes, and discouraging imports by means of tariffs. Both of these are more difficult to do under the rules of the World Trade Organization, but countries sometimes find covert ways of achieving these ends.