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Dunbar is an anthropologist at the University College of London, who wrote a paper on Co-Evolution Of Neocortex Size, Group Size And Language In Humans where he hypothesizes: " ... there is a cognitive limit to the number of individuals with whom any one person can maintain stable relationships, that this limit is a direct function of relative neoc... See more

Christopher Allen • The Dunbar Number as a Limit to Group Sizes

My anecdotal evidence generally seems to support the idea that group sizes will usually plateau at a number lower than 150 participants. This comes from 20 years of doing facilitation both on and offline, running several software companies, and running various forums at America Online. In particular, many online communities provide good evidence fo... See more

Christopher Allen • The Dunbar Number as a Limit to Group Sizes

En utilisant la taille moyenne du cerveau humain et en extrapolant à partir des résultats des primates, il a suggéré que les humains pouvaient maintenir confortablement 150 relations stables. Dunbar

M. A • MGTOW: Ces hommes qui prennent leur propre chemin (French Edition)

The Dunbar Number as a Limit to Group Sizes

Christopher Allen lifewithalacrity.com

But the people we interact with on Twitter are likely to be strangers – yet the patterns we found in Twitter networks were indistinguishable from those of real-world face-toface networks, except that they only had the first three layers

Robin Dunbar • Friends: Understanding the Power of our Most Important Relationships

Life does not consist of a set of unrelated dyadic relationships (you and your mum, you and your daughter, you and your best friend). Rather, these dyadic relationships are all embedded within a complex network of relationships where what happens in one dyad spills over and affects what happens in another.

Robin Dunbar • Friends: Understanding the Power of our Most Important Relationships

scaling ratio of 3.3.

Robin Dunbar • Friends: Understanding the Power of our Most Important Relationships

If a fifth person joins, it will split into two separate conversations within as little as half a minute.

Robin Dunbar • Friends: Understanding the Power of our Most Important Relationships

Essentially, as we increase group sizes beyond 80, to 150, 200, or even 350-500, we typically do so by breaking larger groups down into smaller ones, and continually reducing community sizes down to the point where they can be understood and managed by people -- and so efficiency reasserts itself.