I am currently using the World Economy Comparison presentations as foundation to model various growth scenarios. The analysis variables are by country / region using economic growth and population growth estimates over a 10-year timeframe. The most likely analysis estimation with the greatest variance to experience is the global rate of population growth. The analysis presumption is that greater economic activity will reduce the rate of population growth which also means an estimated increase in global economic participation.
This was not planned to be a forecast of the global economic future. However, it was prepared to give perspective on the impact of economic growth relationships and international economic alliances.