But let’s drill down into the differences between the two, because there is a huge disparity in outcomes. Going down the “green” pathway, the average person in the world will be six times as rich in 2100 compared to 2020 (see figure 9.2). Average income in 2100 will be an astounding $106,000 in today’s currency. That is a great achievement. Remember, being better off correlates to better health outcomes and greater life satisfaction. More prosperity means more overall welfare: a general improvement in well-being and satisfaction. So we can reasonably say that overall global welfare is six
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