The Bank of England estimated that global GDP per person grew on average by 0.01 percent a year between 1,000 BCE and 1750 CE. Between 1750 (the start of the Industrial Revolution) and 2000, it averaged 1.5 percent. To put that number in context, prior to 1750, it took 6,000 years for global per capita GDP to double in size. Since 1750, it has