Letters to the Editor
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I don't know what's dumber
The book or the review of the book.
Where do you get off with platitudes like "NoCal" is the heart of the tech industry in America. Really? All the people in Boston, Austin, RTP, Albany, Minneapolis, Phoenix, Birmingham would like a word with you sir. I live in the #1 area for per capita post graduate degrees in the US and I can assure you it's nowhere near NoCal. It's also nowhere as near expensive to live in either.
People don't simultaneously flock to cities and also not move because they're not tied to place. I can move to any place on earth I can afford to live in, tomorrow and it wouldn't matter in the least for my livelihood. I am not bound by location or timezone. But that doesn't mean that Capetown is the same thing as San Diego. That doesn't mean I don't care if I live in Detroit vs Boca Raton. And it doesn't mean that my family won't care or won't worry about those difference either.
On the other hand living requirements don't align with 'spikiness' or nubbiness as I call it. Nubbiness is the fact that in a flat world there are really only a small number of urban centers that drive the whole thing. Perhaps as few as a few hundred urban centers world wide. China for instance has more than a hundred cities of more than 1 million people each. But only one Hong Kong.