re: #501 Jadespring
I wasn’t thinking of the individual sense but in terms of infrastructure support. Roads, water, energy systems, public transport, garbage removal etc etc. It’s all about efficiency costs related to density.
Decades ago in college, I played around with the concept of ‘single-structure cities”. (About half of NYC is one, if you look at the subways.) Do you know of Paolo Soleri’s Arcologies?