Conversation

Another dimension of megacities is probably built-upness. Many megacities achieve population scale/density with slums. Need a measure like per capita infrastructure (weight of steel and concrete divided by population perhaps? Or lightbulbs? Or electricity wattage? Water?)
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Actually this is the most interesting. Order by population in 3-sigma contour limit, then weight by a compound infrastructure per capita. Cities are extremely high tech spaces and or ways of understanding them don’t really factor that’s.