It's the original design of Facebook. You had to join based on real-world membership in a pre-existing network, in this case a university. You only got to inter

It's the original design of Facebook. You had to join based on real-world membership in a pre-existing network, in this case a university. You only got to interact with people from your university. There's something to be said for this. Schools have their problems. Plenty of drama, bullying, harassment, marginalization, extremism. But when it's limited to a school network, it doesn't swing national sentiment, aid and abet genocides, provide an outlet for foreign adversaries to subvert race relations in your country. But it does mean ad campaigns can't have global reach.