Dunbar's Number: Why You Can Only Really Know 150 People

You can live in a city of 8 million people and still feel completely alone. That's not a paradox — it's your brain working exactly as designed. Anthropologist Robin Dunbar discovered that the human neocortex can handle roughly 150 stable relationships. Not 5,000. Not 1,000 followers. 150. For 300,000 years, being separated from your band of 150 meant near-certain death on the savanna. Today, algorithms feed our ancient brains dopamine and anonymous crowds, leaving our biology starved of real connection. We look at Polly Wiessner's field research, the fireside origins of storytelling, and how agriculture broke our social scale. Your social fatigue isn't a defect — it's a natural reaction to an unnatural world. Timestamps: 0:00 The Subway Platform Trap 1:01 The Fraudulent Promise of Megacities 2:03 Robin Dunbar & The Neocortex Ratio 2:50 The 150-Person Pleistocene Band 3:48 Why Savanna Isolation Was a Death Sentence 4:52 Campfire Bonding & Polly Wiessner's Discovery 5:56 Algorithms vs Authentic Oxytocin 6:46 How Agriculture Destroyed Social Scale 7:48 Cogs in the Economic Machine 8:19 Reclaiming Your 150-Person Tribe #StickmanSapiens #DunbarsNumber #Loneliness #Anthropology #HumanEvolution #SocialAnxiety