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http://fr.ubergizmo.com/2016/01/27/et...utm_source=dlvr.it&utm_medium=twitter
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http://www.internetactu.net/2015/03/2...ie-peut-elle-etre-seulement-numerique
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http://www.newyorker.com/science/mari...affect-math-dunbar-number-friendships
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http://www.wired.com/2014/09/whats-friends-like-music
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