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@@ -585,6 +585,8 @@ I spend a lot of time on internet, losing myself in lot of topics. I choose GitH
 > Overcommunicate in all ways, all the time. There is no such thing as too much communication. When you think you’ve communicated something too much, you’re probably just beginning to get through.
 * [Eric Jorgenson](https://medium.com/evergreen-business-weekly/how-not-to-hire-like-a-clownshow-evergreen-business-weekly-2-hiring-f4da0e9d3230) - (2015) How Not to Hire Like a Clownshow—Evergreen Business Weekly 2: Hiring
 * [Kevin J. Delaney](https://qz.com/846530/something-weird-happens-to-companies-when-they-hit-150-people/) - (2016) Something weird happens to companies when they hit 150 people
+* [Robin Dunbar](https://www.theguardian.com/science/2011/apr/25/few-people-dunbars-number) - (2011) Friends to count on | The perfect number for a human social group is 150. The challenge is maintaining a real sense of community
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 # Creativity
 * [TED](https://www.ted.com/) - [Videos] Ideas worth spreading, usually in the form of short, powerful talks (18 minutes or less)