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It’s complicated…. It’s complicated…. o r perhaps it’s just complex. The formation of human trails. The formation of human trails. The formation of human trails. The formation of human trails. D. Helbing et al. , Nature 388 , 47 (1997). Understanding cities. Understanding cities.
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It’s complicated…. or perhaps it’s just complex
The formation of human trails D. Helbing et al., Nature388, 47 (1997)
Social contagion 1971 2000 Christakis & Fowler, New Engl. J. Med. 358, 2249 (2008)