The "average" person in the world today is male, Chinese, around 40, living near the Myanmar border, working in the service sector on $30,000 a year, with two children, living in a large city like Kunming. However, by the mid-21st century, this person would have had to emigrate to India, maybe take a small pay cut and change sex to remain "average". The hard bit would be ageing just five years by 2050.
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