How likely they are to travel ten miles compared to traveling across the country. Human travel within the United States can be described by very simple mathematical laws and these laws do not depend on if you live in a small or large city. So they're universal within the United States.  -   Lars Hufnagel     Quotes
How likely they are to travel ten miles compared to traveling across the country. Human travel within the United States can be described by very simple mathematical laws and these laws do not depend on if you live in a small or large city. So they're universal within the United States. Lars Hufnagel
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