19 lines
1.2 KiB
Markdown
19 lines
1.2 KiB
Markdown
Dunbar’s number — Robin Dunbar (British anthropologist), based on neocortex-to-group-size correlation across primates. The famous figure is ~150 (stable social relationships), but Dunbar also proposed nested layers, each roughly ~3× the previous:
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• 5 — intimates / support clique (closest loved ones)
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• 15 — sympathy group (close friends, people whose death would devastate you)
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• 50 — friends (regular social contact)
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• 150 — meaningful relationships / “casual friends” (the canonical Dunbar’s number)
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• 500 — acquaintances
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• 1500 — faces/names you can recognize
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The 150 figure comes from extrapolating the primate neocortex-ratio vs. group-size regression to humans. It’s widely cited but also contested — there have been replication critiques (Lindenfors et al. 2021 argued the confidence interval is enormous, anywhere from ~2 to ~520), so treat it as a useful heuristic rather than a hard constant.
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# Friends
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Circle 3 - calls around half year.
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## Robert
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Last called 18.04.2026. Still Amazon, no changes. Talked about AI bubble. Invited to Russia. Wants to meet in Latvia when possible. Told him I’m married, he is not. Next call — around September. |