William Nordhaus estimates that our Paleolithic ancestors had to work for 58 hours to create 1,000 lumen-hours of light.
— Human Progress (@HumanProgress) November 4, 2024
In 1800, it took 5.4 hours, in 1900, 13 minutes, and by 1992, just half a second of labor. pic.twitter.com/bjT7kUqS7R
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