The Dunbar Effect: Why You Can Only Have 150 Friends

Look at your phone right now. Scroll through your contacts. How many names are in there? Your brain has a hard biological limit on the number of people it can actually know — and that number is 150. Not 500. Not 1000. One hundred and fifty. In this video, you will discover the science behind Dunbar's Number — the evolutionary constraint built into your neocortex that has quietly controlled every friendship, every social circle, and every relationship you have ever had. From prehistoric hunter-gatherer villages to the Roman army to modern Facebook networks, the same number keeps appearing. Once you understand it, you will never look at your relationships the same way again. If this made you think differently about your social world, hit like and subscribe — there is a lot more where this came from. #dunbarnumber #humanevolution #psychology #anthropology #socialscience #robindunbar #humanbehavior #evolutionarypsychology #friendships #socialcircle #neuroscience #humanbrain #neocortex #socialpsychology #historyfacts #mindfacts #didyouknow #brainscience #humanhistory #relationships #socialanimal #evolutionbiology #cognitivescience #psychologyfacts #educationalvideo