• This means that the energy supply has reliably grown per capita, which has enabled Earth's ever-growing human population. Each generation of humans produces more energy than its ancestors.
  • But in the past 50 years, as the population has exploded exponentially, the ratio between energy increases and population growth has trended towards 1:1, which might mean that Earth's exponential population growth may be coming to an end. Future growth might be more linear than exponential.
  • There's been discussion in technologist circles that energy use might be a better proxy than GDP for prosperity. Turns out, it also might an important variable to look at when projecting at the future of humanity.

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