We’re all embedded in vast social networks of friends, family, co-workers and more. Nocholas Christakis tracks how a wide variety of traits — from happiness to obesity — can spread from person to person, showing how your location in the network might impact your life in ways you don’t even know.
https://www.ted.com/talks/nocholas_christakis_the_hidden_influence_of_social_networks?utm_campaign=tedspread&utm_medium=referral&utm_source=tedcomshare
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