In a 2009 book review for Bukisa.com, a blogger named Khead quoted from Malcolm Gladwell’s book, The Tipping Point (Little, Brown and Co., 2000): “‘In order to create one contagious movement, you often have to create many small movements.’ This is one detail that explains his Rule of 150. The number 150 represents the maximum number of people that we are able to maintain a social relationship with… and that when a group, organization, or society begins to reach the number of 150, it is beneficial and necessary for a group to divide.”

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