Because few of us forecast the current period of investment-driven productivity increases, it is difficult to predict when it will end. We know only that, at some point, productivity will stop accelerating. But the potential for change is not the exclusive domain of the United States.
The quantity of people and the quantity of capital -- in the form of factories, forests, trucks, roads, computers and all the tools of a modern economy. And the quality of those same inputs -- how well they work, and how efficiently they are deployed. As Dr.