Nails going back to 1600's ? Nice, but it's not the gold standard of comparisons that is the cost of lighting which has been tracked back over 3700 years from

Nails going back to 1600's ? Nice, but it's not the gold standard of comparisons that is the cost of lighting which has been tracked back over 3700 years from LEDs to Babylonians and sesame oil lamps. https://www.statista.com/chart/10567/the-cost-of-light-through-the-ages/ https://www.statista.com/chart/10567/the-cost-of-light-throu...