the technical foundations for this dizzying round of globalization were laid before 1973, but its extent and intensity since then has demanded enormous investment in prime movers (combustion engines and electric motors in transportation) and in essential infrastructures (ports, airports, containerized shipping). As a result, we have not only more of them, but their average capacities (power, volume, throughput) have become larger, while their typical efficiencies and reliabilities have become better.
