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Zipf's law on city size - and 3/4 rule on sustainability

 
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http://io9.com/the-mysterious-law-that-governs-the-size-of-your-city-1479244159/

Patterns are pretty cool things.

100% size increase and only ~75% energy increase.
 
Yeast devil! Back to the oven that baked you! And take this tiny ad too:
Rocket Mass Heater Resources Wiki
https://permies.com/w/rmh-resources
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