Dunbar's Number
150 · The Cognitive Limit
“Humans max out at 150 real relationships. Bitcoin doesn't. That's the whole point.”
British anthropologist Robin Dunbar proposed that humans can maintain about 150 stable social relationships — the cognitive limit of our primate brains. Hunter-gatherer bands, Roman army units, Amish communities, effective company sizes: they all converge around 150. It's the number where everyone still knows everyone. Above it, you need hierarchy, bureaucracy, rules. Bitcoin's network has no Dunbar's number — it scales trust without requiring personal relationships. That's the revolution: a system that works whether you have 150 connections or 150 million. The next major BTC price target sits at $150K — the point where Bitcoin's market cap enters a cognitive scale that forces mainstream institutions to stop ignoring it.
