More economic reasoning from the New York Times: “Done right, foreign aid can create legions of new consumers for American goods and services. When new roads are built in sub-Saharan Africa, for example, demand is stimulated for cars, trucks and everything they carry — all of which could be supplied by American businesses. But no single business has enough incentive to bear the huge cost, all by itself, of building those roads. Instead, it’s a job for government.”