I love this fact: average walking speed increases predictably as city size increases, roughly as N^{0.1}, where N is city population. http://www.pnas.org/content/pnas/104/17/7301.full.pdf …pic.twitter.com/LyXYH169UX
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It's fascinating to see what increases superlinearly (patents, GDP, electricity, crime, AIDS cases) and sublinearly (gas stations, road surface). And, of course, a priori it's not obvious that any of these should be functions so purely of population.pic.twitter.com/73e6PFmT1d
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Are you thinking what I'm thinking? We can solve the Bay Area housing crisis *and* obesity public health crisis *and* reduce global warming emissions...
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The new SF rush hour: https://media.giphy.com/media/l0HlHXfD5i0KcCQ5G/giphy.gif …
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Interesting. Reminds me of Freeman Dyson’s book review for the book Scale, which is masterful http://www.nybooks.com/articles/2018/05/10/the-key-to-everything/ …
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Yes, West is one of the authors.
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What would be the speed in Mexico City? ~22 million
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These relations are correct only at a coarse grained level. The fact is that even the authors admit that these are not the rules, by which you plan a specific city. Otherwise, cities end up with super dangerous shortcuts for complex situations
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Newtonian thinking for quantum cities
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When people dawdle at a green light in Pittsburgh I’m always amazed that nobody honks.
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Ive heard this is because people in bigger cities are younger on average.
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