Why You Only Text the Same 5 People Your Brain's Hidden Limit

You have hundreds of contacts in your phone, yet you keep texting the same five people. It's not laziness, and it's not bad manners. It might be a limit built into your brain, one shaped long before phones, back when every human lived in a small tribe where everyone knew everyone. In this video, you'll learn how anthropologist Robin Dunbar used monkey and ape brains to predict a magic number for humans: about 150. You'll see where it seems to appear in real life, from Hutterite farming colonies to Christmas card lists, and you'll find the hidden rings inside your social world: 5, 15, 50 and 150. Then comes the twist: a 2021 study from Stockholm University challenged Dunbar's number. So is there really a tribe of 150 inside your head? And why do your closest circles stay the same size no matter how many followers you have? If this changed how you think about your friendships, leave a like, tell us in the comments how many people are in your inner circle, and subscribe to keep exploring the ancient roots of who you are. #dunbarsnumber #friendship #psychology #socialbrain #humanevolution #anthropology #evolution #brain #neuroscience #loneliness #socialmedia #relationships #ancienthumans #prehistory #humanhistory #science #explained #educational #documentary #animation #doodle